Merge branch 'development' of https://github.com/unknowableshade/Quetza into development

Documentation of Music & Core (almost done)
Update README.md
2024-03-02 02:05:59 +03:00 · 2024-03-02 02:04:00 +03:00 · 2024-01-30 14:36:57 +03:00 · 2024-01-30 14:36:12 +03:00 · 2024-01-30 14:35:43 +03:00 · 2024-01-30 14:31:15 +03:00
75 changed files with 3206 additions and 2016 deletions
@@ -5,12 +5,15 @@
 !Dockerfile

 # Source
+!config.ts
 !src/
-!prisma/
+!modules/

 # Dependencies
 !package.json
 !pnpm-lock.yaml

-# Typescript compiller config
+# Build
+!build.sh
+!config.tsconfig.json
 !tsconfig.json
@@ -1,9 +1,11 @@
-name: actions
+name: Continuous Integration

 on:
  push:
    tags:
      - "*"
+    branches:
+      - master

 jobs:
  mocha:
@@ -11,7 +13,7 @@ jobs:

    strategy:
      matrix:
-        node-version: [18.x]
+        node-version: [20.x]
        pnpm-version: [8]

    steps:
@@ -33,6 +35,11 @@ jobs:
      - name: ESLint & Prettier
        run: pnpm run lint

+      - name: Prisma Migration
+        env:
+          DATABASE_URL: ${{ secrets.DATABASE_URL }}
+        run: pnpm exec prisma migrate deploy
+
      - name: Build
        run: pnpm run build

@@ -53,14 +60,25 @@ jobs:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}

-      - name: Extract metadata (tags, labels) for Docker
+      - name: Docker Generate Meta
        id: meta
-        uses: docker/metadata-action@9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7
+        uses: docker/metadata-action@v5
        with:
-          images: unknowableshade/quetza-bot
+          images: |
+            unknowableshade/quetza
+          # generate Docker tags based on the following events/attributes
+          # on tag event: tag using git tag, and as latest if the tag doesn't contain hyphens (pre-releases)
+          # on push event: tag using git sha, branch name and as latest-dev
+          tags: |
+            type=raw,value=latest,enable=${{ github.ref_type == 'tag' && !contains(github.ref_name, '-') }}
+            type=raw,value=latest-dev,enable=${{ github.ref_type == 'branch' && github.ref_name == 'master' }}
+            type=raw,value=${{ github.ref_name }}
+            type=raw,value=${{ github.sha }},enable=${{ github.ref_type == 'branch' }}
+          flavor: |
+            latest=false

-      - name: Build and push Docker image
-        uses: docker/build-push-action@f2a1d5e99d037542a71f64918e516c093c6f3fc4
+      - name: Build and Push Docker Image
+        uses: docker/build-push-action@v5
        with:
          context: .
          push: true
@@ -1,6 +1,7 @@
-FROM node:18-alpine as builder
+FROM node:20-alpine as builder

 RUN apk add --no-cache python3
+RUN apk add --no-cache curl
 RUN apk add --no-cache make
 RUN apk add --no-cache gcc
 RUN apk add --no-cache build-base
@@ -17,35 +18,27 @@ COPY . .

 RUN pnpm run build

-FROM node:18-alpine
-
-RUN apk update
-RUN apk add --no-cache bash
-RUN apk add --no-cache curl
-RUN apk add --no-cache ffmpeg
-RUN apk add --no-cache python3
-RUN apk add --no-cache make
-RUN apk add --no-cache gcc
-RUN apk add --no-cache build-base
-
-RUN npm install -g pnpm
-
-ENV NODE_ENV production
-USER node
-
-WORKDIR /usr/src/app
-
-RUN mkdir bin
-RUN curl -L https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp -o /usr/src/app/bin/yt-dlp
-RUN chmod a+rx /usr/src/app/bin/yt-dlp
-
-COPY prisma/ .
-COPY package.json pnpm-lock.yaml ./
+RUN mkdir ./dist/bin/
+RUN curl -L https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp -o /usr/src/app/dist/bin/yt-dlp
+RUN chmod a+rx /usr/src/app/dist/bin/yt-dlp

 RUN pnpm install --prod

-RUN pnpx prisma generate

-COPY --from=builder /usr/src/app/dist ./dist
+FROM node:20-alpine

-CMD [ "pnpm", "start" ]
+RUN apk update
+RUN apk add --no-cache ffmpeg
+RUN apk add --no-cache python3
+
+USER node
+ENV NODE_ENV production
+
+WORKDIR /usr/src/app
+
+COPY package.json ./
+
+COPY --from=builder /usr/src/app/node_modules ./node_modules
+COPY --from=builder /usr/src/app/dist ./
+
+CMD [ "node", "./src/index.js" ]
@@ -1,16 +1,148 @@
-# Quetza 4
+![quetza-logo](./assets/quetza-logo-readme.png)

-_Neat typescript discord bot._
+# Quetza │ [![Build Status](https://github.com/unknowableshade/quetza/actions/workflows/ci.yml/badge.svg?branch=master&event=push)](https://github.com/unknowableshade/quetza/actions/workflows/ci.yml)

-## About
+Awesome Discord bot that performs various duties on my server.

- Base player features.
- Play music from YouTube and many other sites.
- Lots of different filters _(nightcore, earrape etc.)_.
- Slash commands.
+## Architecture

-## Links
+At its core **Quetza** is simply a **[user-client](./src/lib/client.ts)** with a **[logger](./src/lib/logger.ts)**.

- **[Dependencies](https://github.com/unknowableshade/quetza-bot/blob/master/package.json)**
- **[Docker](https://hub.docker.com/repository/docker/unknowableshade/quetza-bot)**
- **[Licence](https://github.com/unknowableshade/5a0b-bot/blob/master/LICENSE)**
+### Modules
+
+**Modules** define the features of **Quetza**.
+
+> 🗂 **The structure** of a **module**
+
+```sh
+modules/example/
+├ module.ts
+├ commands/
+│ ├ [command-name].ts
+├ events/
+│ ├ [event-name].ts
+├ lib/
+│ ├ [...libraries] // Including controller if exists.
+```
+
+#### **module.ts**
+
+**The module** must have a definition file that **adheres** to the following **interface** as _export_.
+
+> 📐 **Module** export **interface** [defined in _[src/lib/types.ts](./src/lib/types.ts)_]
+
+```ts
+interface Module {
+  name: string; // Name of the module.
+  description?: string; // Description of the module.
+  controller?: unknown;
+  // The service orchestrating the module. (passed as third argument to command or event executor)
+}
+```
+
+#### commands/[command-name].ts
+
+Each **command** has to be defined in its own file, preferably named after **the command** itself.
+**The client** indexes **the commands** of each **module** and sends them to **the Discord API**.
+
+> 📐 **Command** **interface** to export [defined in _[src/lib/types.ts](./src/lib/types.ts)_]
+
+```ts
+interface Command {
+  data: ApplicationCommandData; // Definition of command specifically for the Discord API.
+  execute: (client: Client, interaction: CommandInteraction, controller?: unknown) => Promise<void>;
+  // Function that will be called upon interaction invocation.
+}
+```
+
+> ⚠️ Each **command** must comply with the _command interaction_ requirements of **the Discord API**.
+
+#### events/[event-name].ts
+
+**Events** are pre-defined by **the Discord API** and can only have new functions
+bound to **them** by **modules**, despite being declared similarly to **commands**.
+
+> 📐 **Event** **interface** to export [defined in _[src/lib/types.ts](./src/lib/types.ts)_]
+
+```ts
+export interface Event {
+  name: string;
+  execute: (client: Client, eventee: unknown[], controller?: unknown) => Promise<void>;
+}
+```
+
+> ✅ **These** can be re-defined so that they can operate independently in their own **module**.
+
+#### lib/[...libraries] & controller
+
+If you expand the provided **module** **structure**, it will still be a valid **module**.
+**_lib/_** is simply a suggestion to add consistency to the codebase.
+
+**The controller** is responsible for orchestrating the behaviour of your **module**.
+_Imagine it like a web application service._
+
+> 📘 **For example**, creating players for listening to music on voice channels
+
+## Build System
+
+**Quetza** relies on various dependencies to function correctly. The **[package.json](./package.json)** file lists the _engines_, _toolchain_, _dependencies_, and other _metadata_.
+
+> ⚠️ **pnpm** is being used as package manager.
+
+### External Dependencies
+
+**Modules** (or maybe **Quetza** itself) can leverage external _binaries_
+that shall be located at _bin/_ directory or be accessible from _the environment_.
+
+> 🔗 **Listing** of extenal _dependencies_
+
+| **Base/Module** | **Dependency**                             |
+| --------------- | ------------------------------------------ |
+| Music           | [yt-dlp](https://github.com/yt-dlp/yt-dlp) |
+
+### Shipping
+
+#### Docker
+
+[![Build Status](https://github.com/unknowableshade/quetza/actions/workflows/ci.yml/badge.svg?branch=master&event=push)](https://github.com/unknowableshade/quetza/actions/workflows/ci.yml)
+
+The primary method of deploying **Quetza** is through
+a **[Docker Image](https://hub.docker.com/repository/docker/unknowableshade/quetza)**
+provided by the respective
+**[action](./.github/workflows/ci.yml)**.
+
+```bash
+docker run \
+-e DISCORD_TOKEN=*aquired via Discord Developer Portal* \
+--name quetza -d \
+unknowableshade/quetza-bot:latest
+```
+
+#### From Source
+
+Although it is possible to run it directly from the source, some additional steps are required.
+
+- Compile _TypeScript_
+
+```bash
+pnpm run build
+```
+
+- Run **Quetza**
+
+```bash
+pnpm start
+```
+
+#### Environment
+
+In any case, you have to provide **environmental variables** for **bot** to run.
+
+- **DISCORD_TOKEN**: generated token issued by **Discord** itself at
+  **[Developer Portal](https://discord.com/developers/applications)**.
+
+## Licence
+
+**Quetza's** source code is licensed under **[the MIT Licence](,/LICENSE)**.
+
+**Notice!** This does not cover '**_Quetza_**' branding such as **[logo](./assets/quetza-logo.png)** or other **[assets listed](./assets/)**, as these are protected by **[the separate licence](./assets/LICENSE)**.
@@ -0,0 +1,407 @@
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+  c. No term or condition of this Public License will be waived and no
+     failure to comply consented to unless expressly agreed to by the
+     Licensor.
+
+  d. Nothing in this Public License constitutes or may be interpreted
+     as a limitation upon, or waiver of, any privileges and immunities
+     that apply to the Licensor or You, including from the legal
+     processes of any jurisdiction or authority.
+
+=======================================================================
+
+Creative Commons is not a party to its public
+licenses. Notwithstanding, Creative Commons may elect to apply one of
+its public licenses to material it publishes and in those instances
+will be considered the “Licensor.” The text of the Creative Commons
+public licenses is dedicated to the public domain under the CC0 Public
+Domain Dedication. Except for the limited purpose of indicating that
+material is shared under a Creative Commons public license or as
+otherwise permitted by the Creative Commons policies published at
+creativecommons.org/policies, Creative Commons does not authorize the
+use of the trademark "Creative Commons" or any other trademark or logo
+of Creative Commons without its prior written consent including,
+without limitation, in connection with any unauthorized modifications
+to any of its public licenses or any other arrangements,
+understandings, or agreements concerning use of licensed material. For
+the avoidance of doubt, this paragraph does not form part of the
+public licenses.
+
+Creative Commons may be contacted at creativecommons.org.
@@ -0,0 +1,9 @@
+#!/bin/sh
+
+# Build typescript
+pnpm exec tsc --build
+
+# Map path aliases from tsconfigs
+for TS_CONFIG in ./config.tsconfig.json ./src/tsconfig.json ./modules/*/tsconfig.json; do
+	pnpm exec tsc-alias -p "$TS_CONFIG"
+done
@@ -0,0 +1,58 @@
+import { ActivityOptions, ActivityType, ColorResolvable } from "discord.js";
+import { dirname, join } from "path";
+import { fileURLToPath } from "url";
+
+/** Quetza project root directory. */
+const rootDir = dirname(fileURLToPath(import.meta.url));
+/** Quetza's modules directory. */
+const modulesDir = join(rootDir, "/modules/");
+/** External binaries directory. */
+const binariesDir = join(rootDir, "/bin/");
+/** Logger files directory. */
+const loggerDir = join(rootDir, "/log/");
+
+/** Locations that might be useful in application. */
+const path = {
+    root: rootDir,
+    modules: modulesDir,
+    binaries: binariesDir,
+    log: loggerDir
+};
+
+/** Discord bot token. */
+const appToken = process.env.DISCORD_TOKEN;
+/** Discord bot user activity status */
+const appActivity = { type: ActivityType.Watching, name: "over you" };
+
+/** Bot application configuration variables. */
+const application = {
+    token: appToken,
+    activity: appActivity as ActivityOptions
+};
+
+/** Colors Quetza uses in responses. */
+const colors = {
+    default: "#ff6e9b" as ColorResolvable,
+    error: "#b94e59" as ColorResolvable,
+    warning: "#e5925f" as ColorResolvable,
+    info: "#367df6" as ColorResolvable,
+    success: "#83d18e" as ColorResolvable
+};
+
+/** Guild where testing occures. */
+const testGuild = "912401672939139142";
+
+/** Developing options. */
+const dev = {
+    guild: testGuild
+};
+
+/** Exported bundled configuration object. */
+const config = {
+    application,
+    colors,
+    path,
+    dev
+};
+
+export default config;
@@ -0,0 +1,10 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "rootDir": ".",
+    "outDir": "./dist",
+
+    "composite": true
+  },
+  "include": ["config.ts"]
+}
@@ -1,7 +1,18 @@
+/**
+ * /modules
+ *
+ * Replies module listing as well as description of each.
+ *
+ * Just for the information I guess...
+ *
+ * @packageDocumentation
+ */
+
 import { ChatInputCommandInteraction, SlashCommandBuilder } from "discord.js";

-import Client from "../../../lib/client.js";
-import logger from "../../../lib/logger.js";
+import Client from "$lib/client.js";
+import logger from "$lib/logger.js";
+
 import replies from "../lib/replies.js";

 async function execute(client: Client, interaction: ChatInputCommandInteraction): Promise<void> {
@@ -1,13 +1,21 @@
+/**
+ * /ping
+ *
+ * Replies websocket ping (ping between bot and discord) and real ping (ping to fetch + process).
+ *
+ * @remarks Probably should double their value as two ways, but nvm.
+ *
+ * @packageDocumentation
+ */
+
 import { ChatInputCommandInteraction, SlashCommandBuilder } from "discord.js";

-import Client from "../../../lib/client.js";
-import logger from "../../../lib/logger.js";
+import Client from "$lib/client.js";
+
 import replies from "../lib/replies.js";

 async function execute(client: Client, interaction: ChatInputCommandInteraction): Promise<void> {
    if (!interaction.isChatInputCommand()) {
-        logger.warn("Interaction rejected.", { interaction });
-
        return;
    }

@@ -0,0 +1,42 @@
+/**
+ * InteractionCreate
+ *
+ * Resolves creation of an interaction by users.
+ *
+ * @remark Only {@link ChatInputCommand} currently being resolved.
+ *
+ * @packageDocumentation
+ */
+import { Events, Interaction } from "discord.js";
+
+import Client from "$lib/client.js";
+import logger from "$lib/logger.js";
+
+async function execute(client: Client, eventee: [Interaction]): Promise<void> {
+    const [interaction] = eventee;
+
+    if (!interaction.isChatInputCommand()) {
+        logger.notice("Interaction is not a ChatInputCommand.");
+        return;
+    }
+
+    const command = client.commands.get(interaction.commandName);
+
+    if (!command) {
+        logger.notice("Interaction does not exist.", interaction);
+
+        return;
+    }
+
+    try {
+        logger.info("Interaction was created.", interaction);
+
+        await command.execute(client, interaction, command.module.controller);
+    } catch (error) {
+        logger.error("Interaction has and error occured.", error, interaction);
+    }
+}
+
+const name = Events.InteractionCreate;
+
+export { execute, name };
@@ -0,0 +1,50 @@
+/**
+ * Ready
+ *
+ * Will execute upon emitting Client's Ready event.
+ *
+ * @remarks Will push slash commands, set activity status,
+ * and log bot's initials.
+ *
+ * @packageDocumentation
+ */
+
+import { generateDependencyReport } from "@discordjs/voice";
+import { Events } from "discord.js";
+
+import config from "$config.js";
+import Client from "$lib/client.js";
+import logger from "$lib/logger.js";
+
+async function execute(client: Client<true>): Promise<void> {
+    const commandData = client.commands.map((value) => value.data);
+
+    // To not reload bot's global slash commands at every dev build.
+    if (process.env.NODE_ENV === "development") {
+        logger.info(
+            "Development mode: Commands will be pushed to the _test guild_!",
+            client.generateApplicationStatus()
+        );
+        logger.info("Dependency report by '@discordjs/voice'.", {
+            report: generateDependencyReport()
+        });
+
+        const guild = await client.guilds.fetch(config.dev.guild);
+        guild.commands.set(commandData);
+    }
+
+    if (process.env.NODE_ENV === "production") {
+        logger.info(
+            "Production mode: Commands will be pushed to the _application_!",
+            client.generateApplicationStatus()
+        );
+
+        await client.application.commands.set(commandData);
+    }
+
+    client.user.setActivity(config.application.activity);
+}
+
+const name = Events.ClientReady;
+
+export { execute, name };
@@ -1,20 +1,18 @@
 import { BaseMessageOptions, Collection, EmbedBuilder, italic } from "discord.js";

-import config from "../../../config.js";
-import { ModuleMetadata } from "../../../lib/types.js";
+import config from "$config.js";
+import { Module } from "$lib/types.js";

 const replies = {
-    modules: (modules: Collection<string, ModuleMetadata>): BaseMessageOptions => {
+    modules: (modules: Collection<string, Module>): BaseMessageOptions => {
        const embed = new EmbedBuilder()
            .setColor(config.colors.default)
-            .setTitle("Applied modules")
+            .setTitle("Avaliable modules")
            .addFields(
-                modules.map((value) => {
-                    return {
-                        name: value.name + "@" + value.tag,
-                        value: italic(value.description ?? "")
-                    };
-                })
+                modules.map((value) => ({
+                    name: value.name,
+                    value: italic(value.description ?? "")
+                }))
            );

        return { embeds: [embed] };
@@ -0,0 +1,20 @@
+/**
+ * Core Quetza Module definition.
+ *
+ * This module provides default capabilities.
+ * - Comands are being resolved here at InteractionCreated event.
+ * - Aplication status being generated as well as commands pushed to Discord at Ready event.
+ *
+ *  Also this module provides basic commands:
+ *  - ping
+ *  - modules
+ *
+ *  There a lot of speaking because it's as important as $lib.
+ *
+ * @packageDocumentation
+ */
+
+const name = "core";
+const description = "Quetza's core functionality";
+
+export { description, name };
@@ -0,0 +1,16 @@
+{
+  "extends": "../../tsconfig.json",
+  "compilerOptions": {
+    "paths": {
+      "$config.js": ["../../config.js"],
+      "$lib/*": ["../../src/lib/*"],
+      "$mlib/*": ["./lib/*"]
+    },
+
+    "rootDir": ".",
+    "outDir": "../../dist/modules/core",
+
+    "composite": true
+  },
+  "references": [{ "path": "../../src/" }]
+}
@@ -1,7 +1,8 @@
 import { ChatInputCommandInteraction, SlashCommandBuilder } from "discord.js";

-import Client from "../../../lib/client.js";
-import logger from "../../../lib/logger.js";
+import Client from "$lib/client.js";
+import logger from "$lib/logger.js";
+
 import replies from "../lib/replies.js";
 import { controller } from "../module.js";

@@ -1,7 +1,8 @@
 import { ChatInputCommandInteraction, SlashCommandBuilder } from "discord.js";

-import Client from "../../../lib/client.js";
-import logger from "../../../lib/logger.js";
+import Client from "$lib/client.js";
+import logger from "$lib/logger.js";
+
 import replies from "../lib/replies.js";
 import { controller } from "../module.js";

@@ -1,7 +1,8 @@
 import { ChatInputCommandInteraction, SlashCommandBuilder } from "discord.js";

-import Client from "../../../lib/client.js";
-import logger from "../../../lib/logger.js";
+import Client from "$lib/client.js";
+import logger from "$lib/logger.js";
+
 import Filter from "../lib/filter.js";
 import replies from "../lib/replies.js";
 import { controller } from "../module.js";
@@ -35,11 +36,7 @@ const data = new SlashCommandBuilder()
        option
            .setName("filter")
            .setDescription("Filter to apply.")
-            .setChoices(
-                ...Object.keys(Filter.filters).map((key) => {
-                    return { name: key, value: key };
-                })
-            )
+            .setChoices(...Object.values(Filter.FILTERS))
    )
    .setDMPermission(false);

@@ -1,7 +1,8 @@
 import { ChatInputCommandInteraction, SlashCommandBuilder } from "discord.js";

-import Client from "../../../lib/client.js";
-import logger from "../../../lib/logger.js";
+import Client from "$lib/client.js";
+import logger from "$lib/logger.js";
+
 import replies from "../lib/replies.js";
 import { controller } from "../module.js";

@@ -1,7 +1,8 @@
 import { ChatInputCommandInteraction, SlashCommandBuilder } from "discord.js";

-import Client from "../../../lib/client.js";
-import logger from "../../../lib/logger.js";
+import Client from "$lib/client.js";
+import logger from "$lib/logger.js";
+
 import replies from "../lib/replies.js";
 import { controller } from "../module.js";

@@ -1,7 +1,8 @@
 import { ChatInputCommandInteraction, SlashCommandBuilder } from "discord.js";

-import Client from "../../../lib/client.js";
-import logger from "../../../lib/logger.js";
+import Client from "$lib/client.js";
+import logger from "$lib/logger.js";
+
 import replies from "../lib/replies.js";
 import { controller } from "../module.js";

@@ -1,7 +1,8 @@
 import { ChatInputCommandInteraction, SlashCommandBuilder } from "discord.js";

-import Client from "../../../lib/client.js";
-import logger from "../../../lib/logger.js";
+import Client from "$lib/client.js";
+import logger from "$lib/logger.js";
+
 import replies from "../lib/replies.js";
 import { LoopOption } from "../lib/types.js";
 import { controller } from "../module.js";
@@ -1,7 +1,8 @@
 import { ChatInputCommandInteraction, SlashCommandBuilder } from "discord.js";

-import Client from "../../../lib/client.js";
-import logger from "../../../lib/logger.js";
+import Client from "$lib/client.js";
+import logger from "$lib/logger.js";
+
 import replies from "../lib/replies.js";
 import { controller } from "../module.js";

@@ -1,7 +1,8 @@
 import { ChatInputCommandInteraction, SlashCommandBuilder } from "discord.js";

-import Client from "../../../lib/client.js";
-import logger from "../../../lib/logger.js";
+import Client from "$lib/client.js";
+import logger from "$lib/logger.js";
+
 import replies from "../lib/replies.js";
 import { controller } from "../module.js";

@@ -1,7 +1,8 @@
 import { ChatInputCommandInteraction, SlashCommandBuilder } from "discord.js";

-import Client from "../../../lib/client.js";
-import logger from "../../../lib/logger.js";
+import Client from "$lib/client.js";
+import logger from "$lib/logger.js";
+
 import replies from "../lib/replies.js";
 import { controller } from "../module.js";

@@ -8,8 +8,9 @@ import {
    SlashCommandBuilder
 } from "discord.js";

-import Client from "../../../lib/client.js";
-import logger from "../../../lib/logger.js";
+import Client from "$lib/client.js";
+import logger from "$lib/logger.js";
+
 import replies from "../lib/replies.js";
 import { controller } from "../module.js";

@@ -1,7 +1,8 @@
 import { ChatInputCommandInteraction, SlashCommandBuilder } from "discord.js";

-import Client from "../../../lib/client.js";
-import logger from "../../../lib/logger.js";
+import Client from "$lib/client.js";
+import logger from "$lib/logger.js";
+
 import replies from "../lib/replies.js";
 import { controller } from "../module.js";

@@ -1,7 +1,8 @@
 import { ChatInputCommandInteraction, SlashCommandBuilder } from "discord.js";

-import Client from "../../../lib/client.js";
-import logger from "../../../lib/logger.js";
+import Client from "$lib/client.js";
+import logger from "$lib/logger.js";
+
 import replies from "../lib/replies.js";
 import { controller } from "../module.js";

@@ -1,7 +1,8 @@
 import { ChatInputCommandInteraction, SlashCommandBuilder } from "discord.js";

-import Client from "../../../lib/client.js";
-import logger from "../../../lib/logger.js";
+import Client from "$lib/client.js";
+import logger from "$lib/logger.js";
+
 import replies from "../lib/replies.js";
 import { controller } from "../module.js";

@@ -1,7 +1,8 @@
 import { ChatInputCommandInteraction, SlashCommandBuilder } from "discord.js";

-import Client from "../../../lib/client.js";
-import logger from "../../../lib/logger.js";
+import Client from "$lib/client.js";
+import logger from "$lib/logger.js";
+
 import replies from "../lib/replies.js";
 import { controller } from "../module.js";

@@ -1,7 +1,8 @@
 import { ChatInputCommandInteraction, SlashCommandBuilder } from "discord.js";

-import Client from "../../../lib/client.js";
-import logger from "../../../lib/logger.js";
+import Client from "$lib/client.js";
+import logger from "$lib/logger.js";
+
 import replies from "../lib/replies.js";
 import { controller } from "../module.js";

@@ -0,0 +1,66 @@
+/**
+ * voiceStateUpdate
+ *
+ * Monitors voice states of attended guilds.
+ * If Quetza happens to be alone in the Voice Channel - destroys guilds player and disconnects.
+ *
+ * @packageDocumentation
+ */
+
+import { BaseGuildVoiceChannel, User, VoiceState } from "discord.js";
+
+import Client from "$lib/client.js";
+import Music from "$mlib/music.js";
+
+import { asleep } from "../lib/misc.js";
+import replies from "../lib/replies.js";
+
+/** Amount of time Quetza can be alone in voice channel. */
+const TIME_TILL_DISCONNECT = 30_000;
+
+/**
+ * Deduct {@link BaseGuildVoiceChannel} user is a member of.
+ *
+ * @returns BaseGuildVoiceChannel user is a member of, null if not a member of any.
+ *
+ * @param user - User that might be in one of a channels.
+ * @param channels - List of channels that might have user as it member.
+ *
+ * @internal
+ */
+function resolveVoiceChannel(
+    user: User,
+    ...channels: (BaseGuildVoiceChannel | null)[]
+): BaseGuildVoiceChannel | null {
+    return (
+        channels.find((channel) => channel?.members.some((member) => member.user === user)) ?? null
+    );
+}
+
+async function execute(
+    client: Client<true>,
+    eventee: [VoiceState, VoiceState],
+    controller: Music
+): Promise<void> {
+    const [oldState, newState] = eventee;
+
+    const player = controller.get(oldState.guild);
+
+    const channel = resolveVoiceChannel(client.user, oldState.channel, newState.channel);
+
+    if (!player || !channel) {
+        return;
+    }
+
+    if (channel.members.size === 1) {
+        await asleep(TIME_TILL_DISCONNECT);
+        if (channel.members.size === 1 && channel.members.first()?.user === client.user) {
+            await player.channel.send(replies.alone());
+            player.destroy();
+        }
+    }
+}
+
+const name = "voiceStateUpdate";
+
+export { execute, name };
@@ -0,0 +1,15 @@
+/**
+ * @see ../../../src/lib/error.ts
+ *
+ * @packageDocumentation
+ */
+
+import QuetzaError from "$lib/error.js";
+
+export default class MusicError extends QuetzaError {
+    public static readonly PREFIX = "MZ";
+
+    constructor(msg: string, code: number) {
+        super(msg, code, MusicError.PREFIX);
+    }
+}
@@ -0,0 +1,75 @@
+import { DlpDump, dlpExtractorKey, DlpInfo } from "$mlib/types.js";
+
+/**
+ * Avaliable extractors.
+ *
+ * @internal
+ */
+export const dlpExtractorsValues = ["Youtube", "Soundcloud"] as const;
+
+/**
+ * Defines structure for an extractor that will be called by dlpInfo.
+ *
+ * For example:
+ *
+ * @see the {@link youtubeExtractor | youtubeExtractor(...) } function
+ *
+ * @internal
+ */
+type dlpExtractor = (arg0: DlpDump, arg1: (arg0: string) => Promise<DlpInfo>) => Promise<DlpInfo>;
+
+/**
+ * Resolves data that was extracted by dlp (depending on extractor_key).
+ *
+ * @returns DlpInfo generated from dump provided
+ *
+ * @param dump - Parsed dlp output
+ * @param dlpInfo - Function to call if any other information needed
+ * (will recurcively call next extractor after its run)
+ *
+ * @public
+ */
+const youtubeExtractor: dlpExtractor = async (dump, dlpInfo) => {
+    if (dump.id && dump.title && dump.duration) {
+        const result = {
+            url: `https://www.youtube.com/watch?v=${dump.id}`,
+            title: dump.title,
+            thumbnail: `https://img.youtube.com/vi/${dump.id}/default.jpg`,
+            duration: dump.duration
+        };
+
+        return [result];
+    }
+
+    return await dlpInfo(dump.original_url);
+};
+
+/**
+ * {@inheritdoc youtubeExtractor}
+ */
+const soundcloudExtractor: dlpExtractor = async (dump, dlpInfo) => {
+    if (dump.title && dump.duration && dump.thumbnail) {
+        const result = {
+            url: dump.webpage_url ?? dump.original_url,
+            title: dump.title,
+            thumbnail: dump.thumbnail,
+            duration: dump.duration
+        };
+
+        return [result];
+    }
+
+    return await dlpInfo(dump.original_url);
+};
+
+/**
+ * DlpDump extractor_key values mapped to corresponding extractor.
+ *
+ * @public
+ */
+const extractors: Record<dlpExtractorKey, dlpExtractor> = {
+    Youtube: youtubeExtractor,
+    Soundcloud: soundcloudExtractor
+};
+
+export default extractors;
@@ -0,0 +1,199 @@
+import { execFile } from "child_process";
+import path from "path";
+import prismMedia from "prism-media";
+import { Readable } from "stream";
+import { promisify } from "util";
+
+import config from "$config.js";
+import logger from "$lib/logger.js";
+import MusicError from "$mlib/MusicError.js";
+
+import { DlpDump, DlpInfo, dlpStreamOptions } from "../types.js";
+import extractors from "./extractors.js";
+
+const { FFmpeg } = prismMedia;
+const execFileAsync = promisify(execFile);
+
+/**
+ * Maximum length of dlp search stack.
+ *
+ * @internal
+ */
+const DLPINFO_DEPTH = 3;
+
+/**
+ * Path to the Dlp binary.
+ *
+ * @internal
+ */
+const DLP_BINARY = path.join(config.path.binaries, "/yt-dlp");
+
+/**
+ * Base arguments for Ffmpeg transcoder.
+ *
+ * @internal
+ */
+const FFMPEG_BASE_ARGS = [
+    "-analyzeduration",
+    "0",
+    "-loglevel",
+    "0",
+    "-acodec",
+    "libopus",
+    "-f",
+    "opus",
+    "-ar",
+    "48000",
+    "-ac",
+    "2"
+];
+
+/**
+ * Predicate to check whether is string a valid URL.
+ *
+ * @returns true if given string is a valid URL, false otherwise
+ *
+ * @param str - Any string
+ *
+ * @internal
+ */
+function isURL(str: string): boolean {
+    return /^https?:\/\/(www\.)?[-a-zA-Z0-9@:%._+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_+.~#?&//=]*)$/.test(
+        str
+    );
+}
+
+/**
+ * Sub-function of dlpInfo.
+ *
+ * @tutorial Shall be used only inside original function
+ *
+ * @returns Info of the media that related to query, and ones that cannot be found
+ *
+ * @param query - Dlp search request or compatible URL
+ * @param depth - Recursion depth (force stops at 0)
+ *
+ * @internal
+ */
+async function dlpInfoRecursive(query: string, depth = DLPINFO_DEPTH): Promise<DlpInfo> {
+    const error = (message: string, reason: number, ...meta: unknown[]): DlpInfo => {
+        logger.warn(message, { reason, query, ...meta });
+        throw new MusicError(message, reason);
+    };
+
+    if (!depth) {
+        return error("Dlp: recursion depth reached", 1010);
+    }
+
+    const subprocess = await execFileAsync(DLP_BINARY, [
+        query,
+        "-O",
+        "%(.{id,original_url,title,uploader,duration,extractor_key,thumbnail})j",
+        "-s",
+        "--flat-playlist"
+    ]);
+
+    if (!subprocess.stdout) {
+        return error("Dlp: no stdout", 1011);
+    }
+
+    if (subprocess.stderr) {
+        return error("Dlp: stderr", 1012, {
+            stderr: subprocess.stderr
+        });
+    }
+
+    const dumps: DlpDump[] = subprocess.stdout
+        .trim()
+        .split("\n")
+        .map((out) => JSON.parse(out));
+
+    const resolveDump = async (dump: DlpDump): Promise<DlpInfo> => {
+        if (!Object.hasOwn(extractors, dump.extractor_key)) {
+            error("Dlp: illegal extractor", 1013);
+        }
+
+        return extractors[dump.extractor_key](dump, (subquery: string) =>
+            dlpInfoRecursive(subquery, depth - 1)
+        );
+    };
+
+    const result = await Promise.all(dumps.map(resolveDump));
+
+    return result.flat();
+}
+
+/**
+ * Leverages dlp to fetch metadata of media accessible by the extractors.
+ *
+ * @returns Metadata to a youtube video that related to query by title or URL of findings
+ *
+ * @param query - Dlp search request or compatible URL
+ *
+ * @public
+ */
+export async function dlpInfo(query: string): Promise<DlpInfo> {
+    return await dlpInfoRecursive(isURL(query) ? query : "ytsearch1:" + query);
+}
+
+/**
+ * Creates Opus stream by downloading media via dlp.
+ *
+ * @returns Readable stream of requested media
+ *
+ * @param url - Dlp compatible URL to the requested resource
+ * @param options - Transcoders and dlp options
+ *
+ * @public
+ */
+export function dlpStream(url: string, options?: dlpStreamOptions): Promise<Readable> {
+    let ffmpegArgs = FFMPEG_BASE_ARGS;
+
+    if (options?.seek) {
+        ffmpegArgs.unshift("-ss", options.seek.toString());
+    }
+
+    if (options?.ffmpeg) {
+        ffmpegArgs = ffmpegArgs.concat(options.ffmpeg);
+    }
+
+    return new Promise<Readable>((resolve, reject) => {
+        const subprocess = execFile(
+            DLP_BINARY,
+            [
+                url,
+                "-o",
+                "-",
+                "--verbose",
+                "-f",
+                "bestaudio[ext=webm][acodec=opus][asr=48000]/bestaudio",
+                "--rm-cache-dir",
+                "-r",
+                "1M"
+            ],
+            { encoding: null, maxBuffer: 25000000 }
+        );
+
+        if (!subprocess.stdout || !subprocess.stderr) {
+            throw new Error("No stdout");
+        }
+
+        const ffmpegTranscoder = new FFmpeg({ args: ffmpegArgs });
+
+        const stream = subprocess.stdout.pipe(ffmpegTranscoder);
+
+        const onError = (err: Error) => {
+            if (!subprocess.killed) {
+                subprocess.kill();
+            }
+            reject(err);
+            stream.resume();
+        };
+
+        subprocess
+            .once("spawn", () => {
+                resolve(stream);
+            })
+            .on("error", onError);
+    });
+}
@@ -0,0 +1,113 @@
+/**
+ * Filter entry.
+ *
+ * @internal
+ */
+type filterValue = {
+    /** Public well formatted name of the filter. */
+    name: string;
+
+    /** FFmpeg argument of this filter. */
+    value: string;
+};
+
+/**
+ * Record mapping id of filter with its {@link filterValue}.
+ *
+ * @internal
+ */
+const FILTERS: Record<string, filterValue> = {
+    bassboost1x: { name: "Bassboost 1x", value: "bass=g=15:f=110:w=0.3" },
+    bassboost2x: { name: "Bassboost 2x", value: "bass=g=30:f=110:w=0.3" },
+    daycore: { name: "Daycore", value: "aresample=48000,asetrate=48000*0.75" },
+    nightcore: { name: "Nightcore", value: "aresample=48000,asetrate=48000*1.25" },
+    treble: {
+        name: "Treble Boost",
+        value: "firequalizer=gain_entry='entry(2500,3);entry(6300,6);entry(16000,10)'"
+    }
+} as const;
+
+/**
+ * Type build of {@link FILTERS} keys.
+ *
+ * @internal
+ */
+type filterPreset = keyof typeof FILTERS;
+
+/**
+ * {@link ./player#Player | Player's } filters options.
+ *
+ * Resolves FFMpeg transcoder arguments that tweak playback stream.
+ *
+ * @public
+ */
+export default class Filter {
+    /**
+     * Filter list
+     */
+    public static readonly FILTERS = FILTERS;
+
+    /**
+     * Active filters. Mock of {@link FILTERS} object.
+     */
+    private switches_ = new Map<filterPreset, filterValue>();
+
+    /**
+     * Converts active {@link filterValue | filterValues} to array.
+     *
+     * @returns Array of active filter values.
+     */
+    public toggled(): filterValue[] {
+        return [...this.switches_.values()];
+    }
+
+    /**
+     * Toggles filter specified. Clears them all if no arguments provided.
+     *
+     * @returns True if filter was toggled, False otherwise.
+     *
+     * @param query - filter id to toggle. Undefined to clear all.
+     */
+    public toggle(query?: filterPreset): boolean {
+        if (!query) {
+            this.switches_.clear();
+            return false;
+        }
+
+        if (!this.switches_.delete(query)) {
+            this.switches_.set(query, FILTERS[query]);
+            return true;
+        }
+
+        return false;
+    }
+
+    /**
+     * Calculates of active filter map.
+     *
+     * @returns Size of active filter map.
+     */
+    public size(): number {
+        return this.switches_.size;
+    }
+
+    /**
+     * Checks if there are any active filter.
+     *
+     * @returns size === 0 ? True : False.
+     */
+    public empty(): boolean {
+        return this.size() === 0;
+    }
+
+    /**
+     * Converts active filters to FFmpeg compatable argument.
+     *
+     * @returns FFmpeg compatable argument representing active filters.
+     */
+    public toString(): string {
+        return this.toggled()
+            .map((value) => value.value)
+            .join(",");
+    }
+}
@@ -2,8 +2,26 @@ import { AudioResource } from "@discordjs/voice";

 import { LoopOption, Track } from "./types.js";

+/**
+ * Length of playback status bar in emoji symbols.
+ *
+ * @intenal
+ */
 const STATUSBAR_LENGTH = 15;

+/**
+ * Generates pretty playback status bar out of {@link AudioResource}.
+ *
+ * @remarks Takes duration and current playback duration to 'draw' bar.
+ *
+ * @returns String representing generated status bar.
+ *
+ * @param resource - AudioResource with {@link Track} metadata, so duration and playback duration is available.
+ *
+ * @privateRemarks I don't know why resource can be undefined - I forgor.
+ *
+ * @public
+ */
 export function statusBarGenerator(resource?: AudioResource<Track>): string {
    const duration = resource?.metadata.duration || 1;
    const playback = Math.min((resource?.playbackDuration || 0) / 1000, duration);
@@ -15,6 +33,20 @@ export function statusBarGenerator(resource?: AudioResource<Track>): string {
    return `[${filled.join("")}${empty.join("")}] ${toISOTime(playback)}/${toISOTime(duration)}`;
 }

+/**
+ * Converts seconds to ISO time string.
+ *
+ * @returns String representing given seconds in ISO format.
+ *
+ * @param amount - Seconds to convert.
+ *
+ * @example
+ * ```
+ * toISOTime(1337228); // "371:27:08"
+ * ```
+ *
+ * @public
+ */
 export function toISOTime(amount: number): string {
    const h = Math.floor(amount / 3600);
    const m = Math.floor((amount % 3600) / 60);
@@ -27,19 +59,60 @@ export function toISOTime(amount: number): string {
    return hDisplay + mDisplay + sDisplay;
 }

+/**
+ * Asynchronous timeout.
+ *
+ * @returns Promise that will be settled after timeout pass.
+ *
+ * @param amount - Milliseconds to wait before settle.
+ *
+ * @public
+ */
 export async function asleep(amount: number): Promise<unknown> {
    return new Promise((r) => setTimeout(r, amount));
 }

+/**
+ * Converts volume value to emoji representation.
+ *
+ * @remarks In span of 0 ... 100 - emoji from muted to loud.
+ *
+ * @returns String with single emoji representing specified volume.
+ *
+ * @param amount - volume to convert.
+ *
+ * @public
+ */
 export function volumeMoji(amount: number): string {
    return amount > 100 ? "🔊" : amount > 50 ? "🔉" : amount > 0 ? "🔈" : "🔇";
 }

+/**
+ * Converts {@link LoopOption} to emoji representation..
+ *
+ * @returns String with single emoji representing specified loop option.
+ *
+ * @param loop - Loop option that will be converted.
+ *
+ * @public
+ */
 export function loopMoji(loop: LoopOption): string {
    return loop === "AUTO" ? "🔀" : loop === "LOOP" ? "🔁" : loop === "NONE" ? "⤵️" : "🔂";
 }

-export function largestCommonSequence(s1: string, s2: string) {
+/**
+ * Finds larges common sequence (LCS) of characters withing provided strings.
+ *
+ * @remarks Used to fuzzy search query title of Track.
+ *
+ * @returns Length of the LCS found.
+ *
+ * @param s1 - First string.
+ * @param s2 - Second string.
+ *
+ * @public
+ */
+export function largestCommonSequence(s1: string, s2: string): number {
    s1 = s1.toLowerCase().slice(0, 100);
    s2 = s2.toLowerCase().slice(0, 100);

@@ -0,0 +1,67 @@
+import { Collection, Guild, GuildTextBasedChannel } from "discord.js";
+
+import logger from "$lib/logger.js";
+
+import Player from "./player.js";
+
+/**
+ * Module's controller.
+ *
+ * Binds guilds to player.
+ * Creates and destroys them.
+ */
+export default class Music {
+    /**
+     * GuildId to {@link Player} mapping.
+     */
+    private players_ = new Collection<string, Player>();
+
+    /**
+     * Retrieves {@link Player} by {@link Guild}.
+     *
+     * @returns Player if such mapping exists or undefined otherwise.
+     *
+     * @param guild - Discord guild that might has a Player binded.
+     * @param channel - Text channel that should replace Player's one.
+     */
+    public get(guild: Guild, channel?: GuildTextBasedChannel): Player | undefined {
+        const player = this.players_.get(guild.id);
+
+        if (player) {
+            if (channel) {
+                player.channel = channel;
+            }
+
+            return player;
+        }
+    }
+
+    /**
+     * Creates {@link Player} and maps it to GuildId.
+     *
+     * @returns Newly created Player.
+     *
+     * @param guild - {@link Guild} that created Player will be binded to.
+     * @param channel - Text channel that used by Player constructor.
+     */
+    public set(guild: Guild, channel: GuildTextBasedChannel): Player {
+        const player = new Player(guild, this, channel);
+
+        this.players_.set(guild.id, player);
+
+        logger.info("Player was created.", { player });
+
+        return player;
+    }
+
+    /**
+     * Deleted {@link Player} and its mapping by GuildId.
+     *
+     * @param guildId - Id of {@link Guild} that must be removed from mapping.
+     */
+    public delete(guildId: string): void {
+        logger.info("Player was deleted.", { guildId });
+
+        this.players_.delete(guildId);
+    }
+}
@@ -10,7 +10,9 @@ import {
 } from "@discordjs/voice";
 import { Guild, GuildTextBasedChannel, Message, User, VoiceBasedChannel } from "discord.js";

-import { fetchInfo, ytdlStream } from "./fetch.js";
+import { clamp } from "$lib/misc.js";
+
+import { dlpInfo, dlpStream } from "./fetch/fetch.js";
 import Filter from "./filter.js";
 import { largestCommonSequence } from "./misc.js";
 import Music from "./music.js";
@@ -18,10 +20,33 @@ import Queue from "./queue.js";
 import replies from "./replies.js";
 import { Track } from "./types.js";

+/**
+ * Defines guild music player connected to a voice channel by wrapping AudioPlayer, Queue, VoiceConnection, etc.
+ *
+ * @public
+ */
 export default class Player {
-    private music: Music;
-    private guild: Guild;
+    /**
+     * Volume limiter clamp.
+     */
+    public static readonly VOLUME_CLAMP = clamp(0, 150);

+    /**
+     * Module controller orchistrate guild-player mapping.
+     */
+    private music_: Music;
+
+    /**
+     * {@link Player} owner guild.
+     *
+     * @remarks No different {@link Player} instances can have same {@link Guild}.
+     */
+    private guild_: Guild;
+
+    /**
+     * {@link Guild | Guild's} text based channel for player notifications,
+     * such as Current Playing Track.
+     */
    private channel_: GuildTextBasedChannel;
    public get channel(): GuildTextBasedChannel {
        return this.channel_;
@@ -30,44 +55,82 @@ export default class Player {
        this.channel_ = x;
    }

+    /**
+     * Previous notification message.
+     */
    private message_?: Message;

+    /**
+     * A connection to the voice channel of a {@link Guild}.
+     *
+     * @readonly
+     */
    private connection_?: VoiceConnection;
    public get connection(): VoiceConnection | undefined {
        return this.connection_;
    }

+    /**
+     * Player for {@link AudioResource} that is subscribed to the most recent {@link VoiceConnection}.
+     *
+     * @readonly
+     */
    private player_: AudioPlayer;
    public get player(): AudioPlayer {
        return this.player_;
    }

+    /**
+     * Represents an Audio Resource that can be played by {@link AudioPlayer}.
+     *
+     * @readonly
+     */
    private resource_: AudioResource<Track> | undefined;
    public get resource(): AudioResource<Track> | undefined {
        return this.resource_;
    }

+    /**
+     * Inline volume for an {@link AudioResource}.
+     * Must be clamped by {@link VOLUME_CLAMP}.
+     */
    private volume_ = 100;
    public get volume(): number {
        return this.volume_;
    }
    public set volume(x: number) {
-        this.volume_ = Math.max(0, Math.min(150, x));
+        this.volume_ = Player.VOLUME_CLAMP(x);

-        if (this.resource_ && this.resource_.volume) {
+        if (this.resource_?.volume) {
            this.resource_.volume.setVolumeLogarithmic(this.volume_ / 100);
        }
    }

+    /**
+     * Queue manager of the {@link Player}.
+     */
    public readonly queue = new Queue();

+    /**
+     * Filter manager of the {@link Player}.
+     */
    public readonly filter = new Filter();

+    /**
+     * Timestamp when {@link Player} was created.
+     */
    public readonly createdAt: Date = new Date();

+    /**
+     * Player constructor.
+     *
+     * @param guild - {@link Guild} for which player will be created for
+     * @param music - Module controller for managing player own existence
+     * @param channel - Initial text based channed for player notifications
+     */
    public constructor(guild: Guild, music: Music, channel: GuildTextBasedChannel) {
-        this.music = music;
-        this.guild = guild;
+        this.music_ = music;
+        this.guild_ = guild;
        this.channel_ = channel;

        this.player_ = createAudioPlayer();
@@ -75,16 +138,21 @@ export default class Player {
        this.player_.on(AudioPlayerStatus.Idle, async () => this.resourceEndResolvable());
    }

-    private resourceGenerator(track: Track, seek?: number) {
-        const stream = ytdlStream(track.url, {
-            opusEncoded: true,
-            filter: "audioonly",
-            highWaterMark: 1 << 25,
+    /**
+     * Creates {@link AudioResource | an Audio Resource} for {@link an AudioPlayer}.
+     *
+     * @returns Configured audio resource ready to be played
+     *
+     * @param track - Metadata to generate resource from and embed into it
+     * @param seek - Amount of seconds to start playback from
+     */
+    private async resourceGenerator(track: Track, seek?: number): Promise<AudioResource<Track>> {
+        const probe = await dlpStream(track.url, {
            seek: seek ? seek / 1000 : undefined,
-            encoderArgs: !this.filter.empty() ? ["-af", this.filter.toString()] : undefined
+            ffmpeg: !this.filter.empty() ? ["-af", this.filter.toString()] : undefined
        });

-        this.resource_ = createAudioResource(stream, {
+        this.resource_ = createAudioResource(probe, {
            inlineVolume: true,
            metadata: track
        });
@@ -100,6 +168,13 @@ export default class Player {
        return this.resource_;
    }

+    /**
+     * Resolves player behavior after {@link AudioResource} ends.
+     *
+     * @remarks Force destroys ended resource,
+     * and either plays next one or stops,
+     * depending on {@link Queue#next | Queue.next() method}
+     */
    private resourceEndResolvable(): void {
        if (this.resource_) {
            this.resource_.encoder?.destroy();
@@ -113,6 +188,12 @@ export default class Player {
        }
    }

+    /**
+     * Resolves notification emittion.
+     *
+     * @remarks Tries to delete previous notification message,
+     * and send next one
+     */
    private async messageResolvable(track: Track) {
        if (this.message_?.deletable) {
            await this.message_.delete().catch();
@@ -121,18 +202,27 @@ export default class Player {
        this.message_ = await this.channel_.send(replies.nowPlaying(track));
    }

+    /**
+     * Fetches {@link DlpInfo} and converts it to {@link Track | Track metadata}.
+     *
+     * @returns Promise to Track list or undefined, if found nothing.
+     *
+     * @param query - String that Dlp will try to resolve
+     * @param requester - {@link User} that requested Tracks returned to complete convertion
+     */
    private async search(query: string, requester: User): Promise<Track[] | undefined> {
-        const info = await fetchInfo(query);
-
-        if (info.length === 0) {
-            return undefined;
-        }
+        const info = await dlpInfo(query);

        return info.map((value) => {
            return { ...value, requester: requester };
        });
    }

+    /**
+     * Plays current {@link Queue} track from position specified.
+     *
+     * @param seek - Amount of seconds to start playback from
+     */
    public async play(seek?: number): Promise<void> {
        const track = this.queue.current();

@@ -140,13 +230,19 @@ export default class Player {
            return;
        }

-        this.player_.play(this.resourceGenerator(track, seek));
+        this.player_.play(await this.resourceGenerator(track, seek));

        this.connection_.subscribe(this.player_);

        await this.messageResolvable(track);
    }

+    /**
+     * Creates connection to guild's voice based channel,
+     * previously destroying existing connection.
+     *
+     * @param channel - {@link VoiceBasedChannel} to connect to
+     */
    public connect(channel: VoiceBasedChannel): void {
        if (
            this.connection_?.joinConfig.channelId === channel.id &&
@@ -168,6 +264,17 @@ export default class Player {
        this.connection_.subscribe(this.player_);
    }

+    /**
+     * Adds {@link Track | Track(s)} found by {@link search | the search method} to the {@link queue}.
+     *
+     * @returns Track metadata if found, undefined otherwise
+     *
+     * @param query - String that will be passed to the search method
+     * @param requester - {@link User} that requested the query
+     * @param index - Position to insert track to
+     * Value < 0 resolves to 0
+     * Value >= (queue size) resolves to (queue end)
+     */
    public async add(query: string, requester: User, index?: number): Promise<Track | undefined> {
        const tracks = await this.search(query, requester);

@@ -180,6 +287,16 @@ export default class Player {
        return tracks[0];
    }

+    /**
+     * Jumps across {@link queue} to the position determined by the query.
+     *
+     * @remarks If string passed, then position will be determined by
+     * the largest common sequence across all the {@link queue} titles.
+     *
+     * @return Position to which jump was perfomed
+     *
+     * @param query - String of {@link Track} title or position to jump to
+     */
    public jump(query: number | string): number | undefined {
        let position = typeof query === "number" ? query : -1;
        let diff = 0;
@@ -202,6 +319,16 @@ export default class Player {
        return undefined;
    }

+    /**
+     * Removes {@link Track} from {@link queue | the queue} by the position determined by the query.
+     *
+     * @remarks If string passed, then position will be determined by
+     * the largest common sequence across all the {@link queue} titles.
+     *
+     * @return Metadata of removed track, or undefined if nothing happened
+     *
+     * @param query - String of {@link Track} title or position to perfome removal at
+     */
    public remove(query?: number | string): Track | undefined {
        const oldPosition = this.queue.position;

@@ -230,10 +357,18 @@ export default class Player {
        return undefined;
    }

+    /**
+     * Restarts playback from timecode specified.
+     *
+     * @param time - Amount of seconds to start playback from
+     */
    public seek(time: number): void {
        this.play(time);
    }

+    /**
+     * Clears {@link queue} completely - not destroying {@link voiceConnection_}.
+     */
    public clear(): void {
        this.queue.clear();
        this.resource_ = undefined;
@@ -243,15 +378,23 @@ export default class Player {
        }
    }

+    /**
+     * Destroys this instance of {@link Player} and deletes it from controller mapping.
+     */
    public destroy(): void {
        if (this.connection_) {
            this.connection_.destroy();
        }

        this.player_.stop();
-        this.music.delete(this.guild.id);
+        this.music_.delete(this.guild_.id);
    }

+    /**
+     * Pauses/unpauses {@link AudioPlayer} playback.
+     *
+     * @returns True if paused, or False if unpaused
+     */
    public pause(): boolean {
        if (this.player_.state.status === AudioPlayerStatus.Paused) {
            this.player_.unpause();
@@ -262,6 +405,9 @@ export default class Player {
        }
    }

+    /**
+     * Reshuffles {@link queue} order - will start new playback from the same position in the queue.
+     */
    public shuffle(): void {
        this.queue.shuffle();

@@ -271,10 +417,23 @@ export default class Player {
        }
    }

+    /**
+     * Stops {@link player_} that will emit {@link resourceEndResolvable}.
+     *
+     * @see {@link resourceEndResolvable} for understanding full behavior
+     */
    public skip(): void {
        this.player_.stop();
    }

+    /**
+     * Applies {@link Filter} preset to the current playback.
+     *
+     * @returns True if applied, false if revoked
+     *
+     * @param filter - Name of a filter to apply
+     * Must exist in Filter class
+     */
    public setFilter(filter?: string): boolean {
        const status = this.filter.toggle(filter);

@@ -1,16 +1,32 @@
 import { LoopOption, Track } from "./types.js";

+/**
+ * Class of {@link ./player#Player | Player's} queue.
+ *
+ * @public
+ */
 export default class Queue {
+    /**
+     * Array of {@link Track | Tracks} - content of queue.
+     */
    private tracks_: Track[] = [];
    public get tracks(): Track[] {
        return this.tracks_;
    }

+    /**
+     * Position of current playing track.
+     */
    private position_ = 0;
    public get position(): number {
        return this.position_;
    }

+    /**
+     * Defines behavior of queue.
+     *
+     * @see ./types.ts for more info about values.
+     */
    private loop_: LoopOption = "NONE";
    public get loop(): LoopOption {
        return this.loop_;
@@ -19,11 +35,21 @@ export default class Queue {
        this.loop_ = x;
    }

+    /**
+     * Queue overall duration in seconds.
+     */
    private duration_ = 0;
    public get duration(): number {
        return this.duration_;
    }

+    /**
+     * Skips current track.
+     *
+     * @remarks Behavior depends on loop option.
+     *
+     * @returns next {@link Track} or undefined if end was reached.
+     */
    public next(): Track | undefined {
        if (this.loop_ === "SONG") {
            return this.current();
@@ -46,6 +72,9 @@ export default class Queue {
        }
    }

+    /**
+     * Shuffles queue by using simple Math.random.
+     */
    public shuffle(): void {
        let currentIndex = this.tracks_.length;

@@ -62,15 +91,23 @@ export default class Queue {
        this.position_ = 0;
    }

+    /**
+     * Inserts tracks from provided array at specific index.
+     *
+     * @returns first {@link Track} of inserted Tracks.
+     *
+     * @param tracks - List of Tracks to insert to the queue.
+     * @param index - Position at which insertion will be occurred.
+     */
    public push(tracks: Track[], index?: number): Track {
        for (const track of tracks) {
            this.duration_ += track.duration;
        }

-        if (index === undefined || index >= this.tracks_.length) {
+        if (!index || index >= this.tracks_.length) {
            this.tracks_ = this.tracks_.concat(tracks);

-            return this.tracks_[this.tracks_.length - 1];
+            return this.tracks_[this.tracks_.length - tracks.length];
        }

        this.tracks_.splice(Math.max(0, index), 0, ...tracks);
@@ -81,6 +118,13 @@ export default class Queue {
        return this.tracks_[Math.max(0, index)];
    }

+    /**
+     * Removes {@link Track} from the queue at position specified.
+     *
+     * @returns Track that was deleted or undefined if not.
+     *
+     * @param query - Index of element that must be deleted.
+     */
    public pop(query: number): Track | undefined {
        if (query >= 0 && query < this.tracks_.length) {
            const track = this.tracks_[query];
@@ -94,6 +138,11 @@ export default class Queue {
        return undefined;
    }

+    /**
+     * Assigns position new value.
+     *
+     * @returns {@link Track} at position specified or undefined if index out of bounds.
+     */
    public jump(query: number): Track | undefined {
        if (query >= 0 && query < this.tracks_.length) {
            const track = this.tracks_[query];
@@ -104,14 +153,27 @@ export default class Queue {
        return undefined;
    }

+    /**
+     * Returns current {@link Track} (at position).
+     *
+     * @returns Track at internal position.
+     */
    public current(): Track {
        return this.tracks_[this.position_];
    }

+    /**
+     * Checks if queue is empty.
+     *
+     * @returns True is queue is empty, False otherwise.
+     */
    public empty(): boolean {
        return this.tracks_.length === 0;
    }

+    /**
+     * Clears entire queue and sets position to 0.
+     */
    public clear(): void {
        this.tracks_ = [];
        this.position_ = 0;
@@ -1,7 +1,8 @@
 import { AudioResource } from "@discordjs/voice";
 import { BaseMessageOptions, EmbedBuilder, italic } from "discord.js";

-import config from "../../../config.js";
+import config from "$config.js";
+
 import { loopMoji, statusBarGenerator, toISOTime, volumeMoji } from "./misc.js";
 import Player from "./player.js";
 import Queue from "./queue.js";
@@ -338,7 +339,7 @@ const replies = {
                value:
                    player.filter
                        .toggled()
-                        .map((value) => value[0])
+                        .map((value) => value.name)
                        .join("\n") + "\ndefault",
                inline: true
            },
@@ -0,0 +1,99 @@
+import { User } from "discord.js";
+
+import { dlpExtractorsValues } from "./fetch/extractors.js";
+
+/**
+ * Track information fetched by Dlp.
+ *
+ * @public
+ */
+export interface TrackBase {
+    /** URL of track. */
+    url: string;
+
+    /** Track title. */
+    title: string;
+
+    /** Link to track thumbnail. */
+    thumbnail: string;
+
+    /** Track duration in seconds. */
+    duration: number;
+}
+
+/**
+ * Track information with {@link User} that requested it.
+ *
+ * @public
+ */
+export interface Track extends TrackBase {
+    /** User requested this track. */
+    requester: User;
+}
+
+/**
+ * Player loop options.
+ *
+ * @remarks LOOP - Looping queue;
+ *          SONG - Looping single song;
+ *          NONE - Stops after queue end; (default)
+ *          AUTO - Random order;
+ *
+ * @public
+ */
+export type LoopOption = "LOOP" | "SONG" | "NONE" | "AUTO";
+
+/**
+ * Dlp fetched track list.
+ *
+ * @public
+ */
+export type DlpInfo = TrackBase[];
+
+/**
+ * Dlp supported extractors as types.
+ *
+ * @public
+ */
+export type dlpExtractorKey = (typeof dlpExtractorsValues)[number];
+
+/**
+ * Actual Dlp dump that later translates to {@link DlpInfo}.
+ *
+ * @public
+ */
+export interface DlpDump {
+    /** Id of resource. */
+    id: string;
+
+    /** URL passed to Dlp or link to resource found. */
+    original_url: string;
+
+    /** Link to webpage of resource requested. */
+    webpage_url?: string;
+
+    /** Resource title. */
+    title?: string;
+
+    /** Resource duration in seconds. */
+    duration?: number;
+
+    /** Link to resource thumbnail. */
+    thumbnail?: string;
+
+    /** Resource's extractor identifier. */
+    extractor_key: dlpExtractorKey;
+}
+
+/**
+ * Options that shall be passed to DlpStream function.
+ *
+ * @public
+ */
+export interface dlpStreamOptions {
+    /** Amount of seconds to start playback from. */
+    seek?: number;
+
+    /** Args for FFMPEG transcoder. */
+    ffmpeg?: string[];
+}
@@ -0,0 +1,16 @@
+/**
+ * Music module definition.
+ *
+ * Module to play media content from various sites.
+ * @see ./lib/fetch/extractors.ts for site extractors.
+ *
+ * @packageDocumentation
+ */
+import Music from "./lib/music.js";
+
+const name = "music";
+const description = "Music module";
+
+const controller = new Music();
+
+export { controller, description, name };
@@ -0,0 +1,16 @@
+{
+  "extends": "../../tsconfig.json",
+  "compilerOptions": {
+    "paths": {
+      "$config.js": ["../../config.js"],
+      "$lib/*": ["../../src/lib/*"],
+      "$mlib/*": ["./lib/*"]
+    },
+
+    "rootDir": ".",
+    "outDir": "../../dist/modules/music",
+
+    "composite": true
+  },
+  "references": [{ "path": "../../src/" }]
+}
@@ -1,61 +1,54 @@
 {
-  "name": "quetza-bot",
-  "version": "4.2.1",
-  "description": "Discord multipurpose bot",
+  "name": "quetza",
+  "version": "2024.3.0",
+  "description": "Awesome Discord bot that performs various duties",
  "type": "module",
-  "main": "./dist/index.js",
+  "main": "./dist/src/index.js",
  "scripts": {
-    "start": "node ./dist/index.js",
-    "build": "pnpm exec tsc --build",
-    "clean": "rm -rf ./dist && pnpm run build",
+    "start": "node ./dist/src/index.js",
+    "build": "./build.sh",
+    "clean": "rm -rf ./dist",
    "lint": "pnpm exec eslint . && pnpm exec prettier --check .",
    "format": "pnpm exec eslint --fix . && pnpm exec prettier --write .",
    "preinstall": "pnpm dlx only-allow pnpm"
  },
  "license": "MIT",
-  "keywords": [
-    "discord",
-    "bot",
-    "music"
-  ],
  "repository": {
    "type": "git",
-    "url": "git+https://github.com/unknowableshade/quetza-bot.git"
+    "url": "git+https://github.com/unknowableshade/Quetza.git"
  },
  "author": {
-    "name": "unknowableshade",
-    "email": "60275123+unknowableshade@users.noreply.github.com",
-    "url": "https://unknowableshade.ru"
+    "name": "Vladimir Eremin",
+    "email": "personal@ermnvldmr.com",
+    "url": "https://ermnvldmr.com"
  },
  "bugs": {
-    "url": "https://github.com/unknowableshade/quetza-bot/issues"
+    "url": "https://github.com/unknowableshade/Quetza/issues"
  },
-  "readme": "https://github.com/unknowableshade/quetza-bot#readme",
+  "readme": "https://github.com/unknowableshade/Quetza#readme",
  "engines": {
-    "node": "18.x.x",
+    "node": "20.x.x",
    "npm": "*"
  },
  "dependencies": {
    "@discordjs/opus": "^0.9.0",
-    "@discordjs/voice": "^0.16.0",
-    "@prisma/client": "5.0.0",
-    "discord.js": "^14.11.0",
+    "@discordjs/voice": "^0.16.1",
+    "discord.js": "^14.14.1",
    "prism-media": "^1.3.5",
    "tweetnacl": "^1.0.3",
-    "winston": "^3.10.0",
-    "ytdl-core": "^4.11.4"
+    "winston": "^3.11.0"
  },
  "devDependencies": {
-    "@types/node": "^20.4.1",
-    "@typescript-eslint/eslint-plugin": "^6.0.0",
-    "@typescript-eslint/parser": "^6.0.0",
-    "eslint": "^8.44.0",
-    "eslint-config-prettier": "^8.8.0",
-    "eslint-plugin-import": "^2.27.5",
-    "eslint-plugin-simple-import-sort": "^10.0.0",
-    "mocha": "^10.2.0",
-    "prettier": "^3.0.0",
-    "prisma": "^5.0.0",
-    "typescript": "^5.1.6"
+    "@types/node": "^20.11.24",
+    "@typescript-eslint/eslint-plugin": "^7.1.0",
+    "@typescript-eslint/parser": "^7.1.0",
+    "eslint": "^8.57.0",
+    "eslint-config-prettier": "^9.1.0",
+    "eslint-plugin-import": "^2.29.1",
+    "eslint-plugin-simple-import-sort": "^12.0.0",
+    "mocha": "^10.3.0",
+    "prettier": "^3.2.5",
+    "tsc-alias": "^1.8.8",
+    "typescript": "^5.3.3"
  }
 }
@@ -1,22 +0,0 @@
-- CreateTable
-CREATE TABLE "Guild" (
-    "id" TEXT NOT NULL,
-
-    CONSTRAINT "Guild_pkey" PRIMARY KEY ("id")
-);
-
-- CreateTable
-CREATE TABLE "Event" (
-    "objectId" SERIAL NOT NULL,
-    "title" TEXT NOT NULL,
-    "Roles" TEXT[],
-    "guildId" TEXT NOT NULL,
-
-    CONSTRAINT "Event_pkey" PRIMARY KEY ("objectId")
-);
-
-- CreateIndex
-CREATE UNIQUE INDEX "Event_guildId_title_key" ON "Event"("guildId", "title");
-
-- AddForeignKey
-ALTER TABLE "Event" ADD CONSTRAINT "Event_guildId_fkey" FOREIGN KEY ("guildId") REFERENCES "Guild"("id") ON DELETE RESTRICT ON UPDATE CASCADE;
@@ -1,77 +0,0 @@
-/*
-  Warnings:
-
-  - The primary key for the `Event` table will be changed. If it partially fails, the table could be left without primary key constraint.
-  - You are about to drop the column `Roles` on the `Event` table. All the data in the column will be lost.
-  - You are about to drop the column `objectId` on the `Event` table. All the data in the column will be lost.
-  - A unique constraint covering the columns `[title,action,guildId]` on the table `Event` will be added. If there are existing duplicate values, this will fail.
-  - Added the required column `action` to the `Event` table without a default value. This is not possible if the table is not empty.
-  - Added the required column `metadata` to the `Event` table without a default value. This is not possible if the table is not empty.
-
-*/
-- CreateEnum
-CREATE TYPE "PenaltyType" AS ENUM ('BAN', 'TIMEOUT', 'WARN');
-
-- DropIndex
-DROP INDEX "Event_guildId_title_key";
-
-- AlterTable
-ALTER TABLE "Event" DROP CONSTRAINT "Event_pkey",
-DROP COLUMN "Roles",
-DROP COLUMN "objectId",
-ADD COLUMN     "action" TEXT NOT NULL,
-ADD COLUMN     "metadata" JSONB NOT NULL;
-
-- CreateTable
-CREATE TABLE "Queue" (
-    "title" TEXT NOT NULL,
-    "description" TEXT,
-    "updatedAt" TIMESTAMP(3) NOT NULL,
-    "Tracks" JSONB NOT NULL,
-    "userId" TEXT NOT NULL,
-    "authorId" TEXT NOT NULL,
-    "guildId" TEXT NOT NULL
-);
-
-- CreateTable
-CREATE TABLE "Member" (
-    "userId" TEXT NOT NULL,
-    "level" INTEGER NOT NULL DEFAULT 0,
-    "guildId" TEXT NOT NULL
-);
-
-- CreateTable
-CREATE TABLE "Penalty" (
-    "userId" TEXT NOT NULL,
-    "type" "PenaltyType" NOT NULL,
-    "reason" TEXT,
-    "expires" TIMESTAMP(3),
-    "guildId" TEXT NOT NULL
-);
-
-- CreateIndex
-CREATE UNIQUE INDEX "Queue_title_guildId_key" ON "Queue"("title", "guildId");
-
-- CreateIndex
-CREATE UNIQUE INDEX "Member_userId_guildId_key" ON "Member"("userId", "guildId");
-
-- CreateIndex
-CREATE UNIQUE INDEX "Penalty_type_userId_guildId_key" ON "Penalty"("type", "userId", "guildId");
-
-- CreateIndex
-CREATE UNIQUE INDEX "Event_title_action_guildId_key" ON "Event"("title", "action", "guildId");
-
-- AddForeignKey
-ALTER TABLE "Queue" ADD CONSTRAINT "Queue_userId_guildId_fkey" FOREIGN KEY ("userId", "guildId") REFERENCES "Member"("userId", "guildId") ON DELETE RESTRICT ON UPDATE CASCADE;
-
-- AddForeignKey
-ALTER TABLE "Queue" ADD CONSTRAINT "Queue_guildId_fkey" FOREIGN KEY ("guildId") REFERENCES "Guild"("id") ON DELETE RESTRICT ON UPDATE CASCADE;
-
-- AddForeignKey
-ALTER TABLE "Member" ADD CONSTRAINT "Member_guildId_fkey" FOREIGN KEY ("guildId") REFERENCES "Guild"("id") ON DELETE RESTRICT ON UPDATE CASCADE;
-
-- AddForeignKey
-ALTER TABLE "Penalty" ADD CONSTRAINT "Penalty_userId_guildId_fkey" FOREIGN KEY ("userId", "guildId") REFERENCES "Member"("userId", "guildId") ON DELETE RESTRICT ON UPDATE CASCADE;
-
-- AddForeignKey
-ALTER TABLE "Penalty" ADD CONSTRAINT "Penalty_guildId_fkey" FOREIGN KEY ("guildId") REFERENCES "Guild"("id") ON DELETE RESTRICT ON UPDATE CASCADE;
@@ -1,3 +0,0 @@
-# Please do not edit this file manually
-# It should be added in your version-control system (i.e. Git)
-provider = "postgresql"
@@ -1,68 +0,0 @@
-// This is your Prisma schema file,
-// learn more about it in the docs: https://pris.ly/d/prisma-schema
-
-generator client {
-  provider = "prisma-client-js"
-}
-
-datasource db {
-  provider = "postgresql"
-  url      = env("DATABASE_URL")
-}
-
-model Guild {
-  id            String    @id
-  events        Event[]
-  members       Member[]
-  penalties     Penalty[]
-  queues        Queue[]
-}
-
-model Queue {
-  title         String
-  description   String?
-  updatedAt     DateTime  @updatedAt
-  Tracks        Json
-  Member        Member    @relation(fields: [userId, guildId], references: [userId, guildId])
-  userId        String
-  authorId      String
-  Guild         Guild     @relation(fields: [guildId], references: [id])
-  guildId       String
-  @@unique([title, guildId], name: "queueIdentifier")
-}
-
-model Member {
-  userId        String
-  level         Int       @default(0)
-  queues        Queue[]
-  Guild         Guild     @relation(fields: [guildId], references: [id])
-  guildId       String
-  penalties     Penalty[]
-  @@unique([userId, guildId], name: "memberIdentifier")
-}
-
-enum PenaltyType {
-  BAN
-  TIMEOUT
-  WARN
-}
-
-model Penalty {
-  Member        Member    @relation(fields: [userId, guildId], references: [userId, guildId])
-  userId        String
-  type          PenaltyType
-  reason        String?
-  expires       DateTime?
-  Guild         Guild    @relation(fields: [guildId], references: [id])
-  guildId       String
-  @@unique([type, userId, guildId], name: "penaltyIdentifier")
-}
-
-model Event {
-  title         String
-  action        String
-  metadata      Json
-  Guild         Guild    @relation(fields: [guildId], references: [id])
-  guildId       String
-  @@unique([title, action, guildId], name: "eventIdentifier")
-}
@@ -1,26 +0,0 @@
-import { ActivityOptions, ActivityType, ColorResolvable } from "discord.js";
-import path from "path";
-import { fileURLToPath } from "url";
-
-const ROOT = path.dirname(fileURLToPath(import.meta.url));
-const discordToken = process.env.DISCORD_TOKEN;
-const modulesDir = path.join(ROOT, "/modules/");
-const binariesDir = path.join(ROOT, "/../bin/");
-const activityStatus: ActivityOptions = { type: ActivityType.Watching, name: "over you" };
-const colors = {
-    default: "#ff6e9b" as ColorResolvable,
-    error: "#b94e59" as ColorResolvable,
-    warning: "#e5925f" as ColorResolvable,
-    info: "#367df6" as ColorResolvable,
-    success: "#83d18e" as ColorResolvable
-};
-
-const config = {
-    discordToken,
-    modulesDir,
-    binariesDir,
-    activityStatus,
-    colors
-};
-
-export default config;
@@ -1,8 +1,13 @@
 import { GatewayIntentBits } from "discord.js";

-import config from "./config.js";
-import Client from "./lib/client.js";
+import config from "$config.js";
+import Client from "$lib/client.js";

+/**
+ * Ready to go bot instance.
+ *
+ * @remarks Quetza itself.
+ */
 const client = new Client({
    intents: [
        GatewayIntentBits.Guilds,
@@ -11,4 +16,4 @@ const client = new Client({
    ]
 });

-client.login(config.discordToken);
+client.login(config.application.token);
@@ -1,91 +1,132 @@
-import { PrismaClient } from "@prisma/client";
 import { Client as DiscordClient, ClientOptions, Collection } from "discord.js";
-import { existsSync, lstatSync, readdirSync } from "fs";
-import path from "path";
-import { pathToFileURL } from "url";
+import { readdirSync } from "fs";

-import config from "../config.js";
-import { Command, Event, Module, ModuleMetadata } from "./types.js";
+import config from "$config.js";
+import { importDir, pathThrough } from "$lib/misc.js";
+import {
+    ApplicationStatus,
+    Command,
+    CommandBase,
+    Event,
+    EventBase,
+    Module,
+    ModuleBase
+} from "$lib/types.js";

-const MODULE_ENTRY = "module.js";
-const MODULE_COMMANDS = "commands";
-const MODULE_EVENTS = "events";
+/**
+ * Creating path to {@link Module | Module's} declaration file.
+ *
+ * @internal
+ */
+const toModuleDeclaration = pathThrough([config.path.modules], ["module.js"]);

-export default class Client extends DiscordClient {
+/**
+ * Creating path to {@link Module | Module's} commands directory.
+ *
+ * @internal
+ */
+const toModuleCommands = pathThrough([config.path.modules], ["commands"]);
+
+/**
+ * Creating path to {@link Module | Module's} events directory.
+ *
+ * @internal
+ */
+const toModuleEvents = pathThrough([config.path.modules], ["events"]);
+
+/**
+ * Bot client enchanced with module handling and database access.
+ *
+ * @typeparam T - True if client ready, false otherwise.
+ *
+ * @public
+ */
+export default class Client<T extends boolean = boolean> extends DiscordClient<T> {
+    /**
+     * Mapping command name to its {@link Command | instance}.
+     */
    public readonly commands = new Collection<string, Command>();

-    public readonly modules = new Collection<string, ModuleMetadata>();
+    /**
+     * Mapping event name to its {@link Event | instance}.
+     */
+    public readonly events = new Collection<string, Event>();

-    public readonly db = new PrismaClient();
+    /**
+     * Mapping module name to its {@link Module | instance}.
+     */
+    public readonly modules = new Collection<string, Module>();

+    /**
+     * Constructs Quetza Client.
+     *
+     * @param options - Discord.js client options
+     */
    public constructor(options: ClientOptions) {
        super(options);

-        for (const module of readdirSync(config.modulesDir)) {
-            const modulePath = path.join(config.modulesDir, module);
-
-            if (!lstatSync(modulePath).isDirectory()) {
-                continue;
-            }
-
-            import(pathToFileURL(path.join(modulePath, MODULE_ENTRY)).toString()).then(
-                (data: Module) => this.loadModule(data)
-            );
-        }
+        readdirSync(config.path.modules).forEach((module) =>
+            this.importModule(
+                toModuleDeclaration(module),
+                toModuleCommands(module),
+                toModuleEvents(module)
+            )
+        );
    }

-    private loadModule(data: Module): void {
-        const commands: string[] = [];
-        const events: string[] = [];
+    /**
+     * Generates client's status by providing Bot User and Loaded Modules info.
+     *
+     * @returns Status of application.
+     * Additional info such as Application ID provided if {@link Client} is ready.
+     */
+    public generateApplicationStatus(): ApplicationStatus {
+        const modules = Array.from(this.modules.values());

-        function importModule(dir: string, importThen: (data: Command & Event) => void) {
-            if (existsSync(dir)) {
-                for (const source of readdirSync(dir)) {
-                    const file = path.join(dir, source);
-
-                    if (!lstatSync(file).isFile() || !file.endsWith(".js")) {
-                        continue;
-                    }
-
-                    import(pathToFileURL(file).toString()).then(importThen);
-                }
-            }
+        if (!this.isReady()) {
+            return {
+                applicationId: null,
+                tag: null,
+                modules
+            };
        }

-        importModule(path.join(data.rootDir, MODULE_COMMANDS), (command: Command) => {
-            this.commands.set(command.data.name, command);
-            commands.push(command.data.name);
-        });
-
-        importModule(path.join(data.rootDir, MODULE_EVENTS), (event: Event) => {
-            this.on(
-                event.name,
-                async (...eventee: unknown[]) => await event.execute(this, eventee)
-            );
-            events.push(event.name);
-        });
-
-        this.modules.set(data.name, {
-            ...data,
-            commands,
-            events
-        });
+        return {
+            applicationId: this.application.id,
+            tag: this.user.tag,
+            modules
+        };
    }

-    public generateApplicationStatus(): string[] {
-        const modulesStatus = this.modules.map((module) => {
-            const tag = `✓ ${module.name}@${module.tag} module is loaded.`;
-            const commands = module.commands.map((name) => " - " + name).join("\n");
-            const events = module.events.map((name) => " - " + name).join("\n");
+    /**
+     * Imports module metadata, commands and events to the client.
+     *
+     * @param declaration - File declaring module information.
+     * @param commands - Directory containing module's commands.
+     * @param events - Directory containing module's events.
+     */
+    private async importModule(
+        declaration: string,
+        commands: string,
+        events: string
+    ): Promise<void> {
+        const module = await import(declaration).then((module: ModuleBase) =>
+            this.modules.ensure(module.name, () => ({ ...module, commands: [], events: [] }))
+        );

-            return [`${tag}\n`, "commands:", `${commands}`, "events:", `${events}`].join("\n");
+        importDir<CommandBase>(commands, (command) => {
+            const saved = this.commands.ensure(command.data.name, () => ({ ...command, module }));
+
+            module.commands.push(saved);
        });

-        const clientStatus =
-            this.user && this.application
-                ? `✓ ${this.application.id} successfully logged in as ${this.user.tag}.`
-                : "✖ Application is not availiable.";
+        importDir<EventBase>(events, (event) => {
+            const saved = this.events.ensure(event.name, () => ({ ...event, module }));

-        return modulesStatus.concat(clientStatus);
+            module.events.push(saved);
+            this.on(event.name, (...eventee: unknown[]) =>
+                saved.execute(this, eventee, module.controller)
+            );
+        });
    }
 }
@@ -0,0 +1,52 @@
+/**
+ * Base class for all quetza's errors.
+ *
+ * @public
+ */
+export default class QuetzaError extends Error {
+    /**
+     * Default prefix value stands for quetza's base features.
+     */
+    public static readonly DEFAULT_PREFIX = "QZ";
+
+    /**
+     * Error code is an identifier for specific Error in the same module.
+     */
+    public readonly code: number;
+
+    /**
+     * Prefix defines module where Error has occured.
+     *
+     * @defaultValue `QuetzaError.DEFAULT_PREFIX`
+     */
+    public readonly prefix: string;
+
+    /**
+     * Constructs QuetzaError class.
+     *
+     * @param msg - Error message (that shall not be displayed to end user)
+     * @param code - {@link code | Code} unique to error in module
+     * @param prefix - Identifier of module where error has occurred
+     */
+    public constructor(msg: string, code: number, prefix = QuetzaError.DEFAULT_PREFIX) {
+        super(msg);
+        this.code = code;
+        this.prefix = prefix;
+    }
+
+    /**
+     * Must create a unique error ID if no collision bugs were written.
+     *
+     * @returns error ID as concatenation of {@link prefix} and {@link code}
+     *
+     * @example
+     * ```ts
+     * const error = new QuetzaError("Some error.", 404, "NF");
+     *
+     * error.getErrorId(); // "NF404"
+     * ```
+     */
+    public getErrorId(): string {
+        return this.prefix + this.code.toString();
+    }
+}
@@ -1,20 +1,33 @@
+import path from "path";
 import winston from "winston";

+import config from "$config.js";
+
+/** Error logging file path.
+ *
+ * @internal
+ */
+const errorLog = path.join(config.path.log, "error.log");
+
+/** Combined logging file path.
+ *
+ * @internal
+ */
+const combinedLog = path.join(config.path.log, "combined.log");
+
+/**
+ * Logger instance. Use it for logging.
+ *
+ * @public
+ */
 const logger = winston.createLogger({
-    level: "info",
+    levels: winston.config.syslog.levels,
    format: winston.format.combine(winston.format.timestamp(), winston.format.json()),
    transports: [
-        new winston.transports.File({ filename: "logs/error.log", level: "error" }),
-        new winston.transports.File({ filename: "logs/combined.log" })
+        new winston.transports.Console({ format: winston.format.simple() }),
+        new winston.transports.File({ filename: errorLog, level: "error" }),
+        new winston.transports.File({ filename: combinedLog })
    ]
 });

-if (process.env.NODE_ENV !== "production") {
-    logger.add(
-        new winston.transports.Console({
-            format: winston.format.simple()
-        })
-    );
-}
-
 export default logger;
@@ -0,0 +1,77 @@
+/**
+ * Definitions for miscellaneous functions used in this project.
+ */
+
+import assert from "assert";
+import { existsSync, readdirSync } from "fs";
+import path from "path";
+import { pathToFileURL } from "url";
+
+/**
+ * Clamps value between min and max params.
+ *
+ * @returns Function with defined min and max, expecting a value to clamp.
+ *
+ * @param min - value less than min will resolve to min.
+ * @param max - value greater than max will resolve to max.
+ *
+ * @public
+ */
+export function clamp(min: number, max: number) {
+    assert(min <= max);
+
+    return (value: number) => Math.max(min, Math.max(max, value));
+}
+
+/**
+ * Converts Path to File URI Scheme String.
+ *
+ * @returns URI.toString() made from joined paths.
+ *
+ * @param paths - Strings that should be joined and converted to URI.
+ *
+ * @public
+ */
+export function pathToURI(...paths: string[]): string {
+    return pathToFileURL(path.join(...paths)).toString();
+}
+
+/**
+ * Imports every module withing provided folder with callback.
+ *
+ * @remarks Will import nothing if directory not exists.
+ *
+ * @typeparam T - Type of whatever you're importing.
+ * If not 'any', expecting every import to have the same semantics.
+ *
+ * @param dir - Directory where importing modules resides.
+ * @param callback - Function to run on every import.
+ *
+ * @public
+ */
+export function importDir<T>(dir: string, callback: (module: T) => void) {
+    if (!existsSync(dir)) {
+        return;
+    }
+
+    readdirSync(dir)
+        .filter((source) => source.endsWith(".js"))
+        .forEach((source) => import(pathToURI(dir, source)).then(callback));
+}
+
+/**
+ * Creates function that joins paths with predefined origin and target.
+ *
+ * @returns String with following structure: '...origins/...through/...target'.
+ *
+ * @param origins - Paths that will be joined and prepended to 'through'.
+ * @param targets - Paths that will be joined and appended to 'through'.
+ *
+ * @public
+ */
+export function pathThrough(
+    origins: string[],
+    targets: string[]
+): (...through: string[]) => string {
+    return (...through: string[]) => path.join(...origins, ...through, ...targets);
+}
@@ -1,27 +1,103 @@
-import { ApplicationCommandData, CommandInteraction } from "discord.js";
+/**
+ * Quetza's base type declarations.
+ *
+ * @see Architecture documentation for more understanding of its purpose.
+ */
+import { ApplicationCommandData, CommandInteraction, If } from "discord.js";

-import Client from "./client.js";
+import Client from "$lib/client.js";

-export interface Module {
+/**
+ * Quetza's module declaration.
+ *
+ * @public
+ */
+export interface ModuleBase {
+    /** Name of a module. */
    name: string;
-    description?: string;
-    author: string;
-    tag: string;
+
+    /** Description of a module. */
+    description: string;
+
+    /** Module controller. */
    controller?: unknown;
-    rootDir: string;
 }

-export interface ModuleMetadata extends Module {
-    commands: string[];
-    events: string[];
+/**
+ * Complete {@link ModuleBase} declaration with commands and events.
+ *
+ * @public
+ */
+export interface Module extends ModuleBase {
+    /** Module's commands. */
+    commands: CommandBase[];
+
+    /** Module's events. */
+    events: EventBase[];
 }

-export interface Command {
+/**
+ * Quetza's command interaction declaration.
+ *
+ * @public
+ */
+export interface CommandBase {
+    /** Command metadata that will be passed to the Discord API. */
    data: ApplicationCommandData;
-    execute: (client: Client, interaction: CommandInteraction) => Promise<void>;
+
+    /** Function that will be executed upon invoking this interaction. */
+    execute: (
+        client: Client,
+        interaction: CommandInteraction,
+        controller?: unknown
+    ) => Promise<void>;
 }

-export interface Event {
+/**
+ * {@link ModuleBase} with {@link Module} included.
+ *
+ * @public
+ */
+export interface Command extends CommandBase {
+    /** Module containing this Command. */
+    module: Module;
+}
+
+/**
+ * Quetza's event declaration.
+ *
+ * @public
+ */
+export interface EventBase {
+    /** Name of an event to listen. */
    name: string;
-    execute: (client: Client, eventee: unknown[]) => Promise<void>;
+
+    /** Function that will be executed upon event emitting. */
+    execute: (client: Client, eventee: unknown[], controller?: unknown) => Promise<void>;
+}
+
+/**
+ * {@link EventBase} with {@link Module} included.
+ *
+ * @public
+ */
+export interface Event extends EventBase {
+    /** Module containing this Event. */
+    module: ModuleBase;
+}
+
+/**
+ * Application status provides information that may be useful at initialization.
+ *
+ * @public
+ */
+export interface ApplicationStatus<Ready extends boolean = boolean> {
+    /** Discord's ID of an application. */
+    applicationId: If<Ready, string>;
+
+    /** Tag of a bot user. */
+    tag: If<Ready, string>;
+
+    /** List of each module imported. */
+    modules: Module[];
 }
@@ -1,32 +0,0 @@
-import { Events, Interaction } from "discord.js";
-
-import Client from "../../../lib/client.js";
-import logger from "../../../lib/logger.js";
-
-async function execute(client: Client, eventee: [Interaction]): Promise<void> {
-    const [interaction] = eventee;
-
-    if (interaction.isChatInputCommand()) {
-        const command = client.commands.get(interaction.commandName);
-
-        if (!command) {
-            logger.error(`No command matching ${interaction.commandName} was found.`, {
-                interaction
-            });
-
-            return;
-        }
-
-        try {
-            logger.info(`Interaction ${interaction.commandName} was created.`, interaction);
-
-            await command.execute(client, interaction);
-        } catch (error) {
-            logger.error("Interaction error occured. ", { error, interaction });
-        }
-    }
-}
-
-const name = Events.InteractionCreate;
-
-export { execute, name };
@@ -1,37 +0,0 @@
-import { generateDependencyReport } from "@discordjs/voice";
-import { Events } from "discord.js";
-
-import config from "../../../config.js";
-import Client from "../../../lib/client.js";
-import logger from "../../../lib/logger.js";
-
-async function execute(client: Client): Promise<void> {
-    if (!client.user || !client.application) {
-        throw new Error("No application or user for it is provided.");
-    }
-
-    const commandData = Array.from(client.commands.values()).map((value) => value.data);
-
-    if (process.env.NODE_ENV === "development" && process.env.TEST_GUILD) {
-        logger.info("Development mode: Commands will be pushed to the test guild!");
-
-        logger.info(generateDependencyReport());
-
-        const guild = await client.guilds.fetch(process.env.TEST_GUILD);
-        guild.commands.set(commandData);
-    }
-
-    if (process.env.NODE_ENV === "production") {
-        logger.info("Production mode: Commands will be pushed to the application!");
-
-        await client.application.commands.set(commandData);
-    }
-
-    client.generateApplicationStatus().forEach((report) => logger.info(report));
-
-    client.user.setActivity(config.activityStatus);
-}
-
-const name = Events.ClientReady;
-
-export { execute, name };
@@ -1,11 +0,0 @@
-import path from "path";
-import { fileURLToPath } from "url";
-
-const name = "core";
-const description = "Quetza core functionality";
-const author = "unknowableshade";
-const tag = "4.2.0";
-
-const rootDir = path.dirname(fileURLToPath(import.meta.url));
-
-export { author, description, name, rootDir, tag };
@@ -1,36 +0,0 @@
-import { VoiceState } from "discord.js";
-
-import Client from "../../../lib/client.js";
-import { asleep } from "../lib/misc.js";
-import replies from "../lib/replies.js";
-import { controller } from "../module.js";
-
-const WAIT_TIME = 30_000;
-
-async function execute(client: Client, eventee: [VoiceState]): Promise<void> {
-    const [oldState] = eventee;
-
-    const player = controller.get(oldState.guild);
-
-    if (!player || !oldState.channel || !client.user) {
-        return;
-    }
-
-    if (
-        oldState.channel.members.size === 1 &&
-        oldState.channel.members.first()?.user === client.user
-    ) {
-        await asleep(WAIT_TIME);
-        if (
-            oldState.channel.members.size === 1 &&
-            oldState.channel.members.first()?.user === client.user
-        ) {
-            await player.channel.send(replies.alone());
-            player.destroy();
-        }
-    }
-}
-
-const name = "voiceStateUpdate";
-
-export { execute, name };
@@ -1,245 +0,0 @@
-import { execFile } from "child_process";
-import path from "path";
-import prismMedia from "prism-media";
-import { Duplex, Readable } from "stream";
-import { promisify } from "util";
-import ytdl from "ytdl-core";
-
-import config from "../../../config.js";
-import logger from "../../../lib/logger.js";
-import { StreamOptions, YtdlDump, YtdlResult, YtdlStreamOptions } from "./types.js";
-
-const { opus: Opus, FFmpeg } = prismMedia;
-const execFileAsync = promisify(execFile);
-
-const SEARCH_DEPTH = 5;
-const YTDL_EVENTS = [
-    "info",
-    "progress",
-    "abort",
-    "request",
-    "response",
-    "error",
-    "redirect",
-    "retry",
-    "reconnect"
-];
-
-function isURL(url: string): boolean {
-    return /^https?:\/\/(www\.)?[-a-zA-Z0-9@:%._+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_+.~#?&//=]*)$/.test(
-        url
-    );
-}
-
-async function fetchInfoRecursive(query: string, depth = 0): Promise<YtdlResult[]> {
-    if (depth === SEARCH_DEPTH) {
-        logger.warn("yt-dlp failed to find anything.", { query });
-
-        return [];
-    }
-
-    const executable = await execFileAsync(path.join(config.binariesDir, "/yt-dlp"), [
-        query,
-        "-O %(.{id,original_url,title,uploader,duration,extractor_key,thumbnail})j",
-        "-s",
-        "--flat-playlist"
-    ]);
-
-    const dump: YtdlDump[] = JSON.parse("[" + executable.stdout.replace(/\n(?=.+)/g, ",") + "]");
-
-    const result: YtdlResult[] = [];
-
-    for (const entry of dump) {
-        if (entry.title && entry.thumbnail && entry.duration && entry.extractor_key === "Youtube") {
-            result.push({
-                url: entry.original_url,
-                title: entry.title,
-                thumbnail: entry.thumbnail,
-                duration: entry.duration
-            });
-
-            logger.info("yt-dlp has found corresponding youtube video.", {
-                result: result[result.length - 1]
-            });
-
-            continue;
-        }
-
-        let unwind: YtdlResult[];
-
-        if (entry.extractor_key !== "Youtube" && entry.title) {
-            unwind = await fetchInfoRecursive(
-                `ytsearch1:${entry.uploader ? entry.uploader + " - " : ""} ${entry.title}`,
-                depth + 1
-            );
-        } else {
-            unwind = await fetchInfoRecursive(entry.original_url, depth + 1);
-        }
-
-        if (unwind.length !== 0) {
-            result.push(unwind[0]);
-        }
-    }
-
-    return result;
-}
-
-export async function fetchInfo(query: string): Promise<YtdlResult[]> {
-    logger.info("yt-dlp was invoked.", { query });
-
-    try {
-        if (!isURL(query)) {
-            return await fetchInfoRecursive("ytsearch1:" + query);
-        }
-
-        return await fetchInfoRecursive(query);
-    } catch (error) {
-        logger.error("yt-dlp execution invoked error.", { error });
-
-        return [];
-    }
-}
-
-export function ytdlStream(url: string, options?: YtdlStreamOptions) {
-    logger.info("Created ytdl stream.", { url, options });
-
-    let ffmpegArgs: string[] = [
-        "-analyzeduration",
-        "0",
-        "-loglevel",
-        "0",
-        "-f",
-        `${options?.fmt ? options.fmt : "s16le"}`,
-        "-ar",
-        "48000",
-        "-ac",
-        "2"
-    ];
-
-    if (options?.seek) {
-        ffmpegArgs.unshift("-ss", options.seek.toString());
-    }
-
-    if (options?.encoderArgs) {
-        ffmpegArgs = ffmpegArgs.concat(options.encoderArgs);
-    }
-
-    const transcoder = new FFmpeg({
-        args: ffmpegArgs
-    });
-
-    const inputStream = ytdl(url, options);
-    const transcoderStream = inputStream.pipe(transcoder);
-
-    if (options && !options.opusEncoded) {
-        YTDL_EVENTS.forEach((event) =>
-            inputStream.on(event, (...args) => transcoderStream.emit(event, ...args))
-        );
-        inputStream.on("error", () => transcoder.destroy());
-        transcoderStream.on("close", () => transcoder.destroy());
-
-        return transcoderStream;
-    }
-
-    const opus = new Opus.Encoder({
-        rate: 48000,
-        channels: 2,
-        frameSize: 960
-    });
-
-    const outputStream = transcoderStream.pipe(opus);
-
-    transcoderStream.on("error", (e) => outputStream.emit("error", e));
-
-    YTDL_EVENTS.forEach((event) =>
-        inputStream.on(event, (...args) => outputStream.emit(event, ...args))
-    );
-
-    outputStream.on("close", () => {
-        transcoder.destroy();
-        opus.destroy();
-    });
-
-    return outputStream;
-}
-
-export function arbitraryStream(stream: string | Readable | Duplex, options?: StreamOptions) {
-    logger.info("Created arbitrary stream.", { stream, options });
-
-    let ffmpegArgs: string[];
-
-    if (typeof stream === "string") {
-        ffmpegArgs = [
-            "-reconnect",
-            "1",
-            "-reconnect_streamed",
-            "1",
-            "-reconnect_delay_max",
-            "5",
-            "-i",
-            stream,
-            "-analyzeduration",
-            "0",
-            "-loglevel",
-            "0",
-            "-f",
-            `${options?.fmt ? options.fmt : "s16le"}`,
-            "-ar",
-            "48000",
-            "-ac",
-            "2"
-        ];
-    } else {
-        ffmpegArgs = [
-            "-analyzeduration",
-            "0",
-            "-loglevel",
-            "0",
-            "-f",
-            `${options?.fmt ? options.fmt : "s16le"}`,
-            "-ar",
-            "48000",
-            "-ac",
-            "2"
-        ];
-    }
-
-    if (options?.seek) {
-        ffmpegArgs.unshift("-ss", options.seek.toString());
-    }
-
-    if (options?.encoderArgs) {
-        ffmpegArgs = ffmpegArgs.concat(options.encoderArgs);
-    }
-
-    let transcoder = new FFmpeg({
-        args: ffmpegArgs
-    });
-
-    if (typeof stream !== "string") {
-        transcoder = stream.pipe(transcoder);
-
-        stream.on("error", () => transcoder.destroy());
-    }
-
-    if (options && !options.opusEncoded) {
-        transcoder.on("close", () => transcoder.destroy());
-
-        return transcoder;
-    }
-
-    const opus = new Opus.Encoder({
-        rate: 48000,
-        channels: 2,
-        frameSize: 960
-    });
-
-    const outputStream = transcoder.pipe(opus);
-
-    outputStream.on("close", () => {
-        transcoder.destroy();
-        opus.destroy();
-    });
-
-    return outputStream;
-}
@@ -1,66 +0,0 @@
-export default class Filter {
-    public static readonly filters = {
-        "Bassboost 1.5": "bass=g=15:f=110:w=0.3",
-        "bassboost 2.0": "bass=g=20:f=110:w=0.3",
-        "bassboost 3.0": "bass=g=30:f=110:w=0.3",
-        "8D": "apulsator=hz=0.09",
-        Daycore: "aresample=48000,asetrate=48000*0.75",
-        Nightcore: "aresample=48000,asetrate=48000*1.25",
-        Phaser: "aphaser=in_gain=0.4",
-        Tremolo: "tremolo",
-        Vibrato: "vibrato=f=6.5",
-        Reverse: "areverse",
-        Treble: "treble=g=5",
-        "Normalizer 1": "dynaudnorm=g=101",
-        "Normalizer 2": "acompressor",
-        "Surround Sound": "surround",
-        Pulsator: "apulsator=hz=1",
-        Subboost: "asubboost",
-        Karaoke: "stereotools=mlev=0.03",
-        Compressor: "compand=points=-80/-105|-62/-80|-15.4/-15.4|0/-12|20/-7.6",
-        Expander:
-            "compand=attacks=0:points=-80/-169|-54/-80|-49.5/-64.6|-41.1/-41.1|-25.8/-15|-10.8/-4.5|0/0|20/8.3",
-        "Soft Limiter": "compand=attacks=0:points=-80/-80|-12.4/-12.4|-6/-8|0/-6.8|20/-2.8",
-        Chorus: "chorus=0.7:0.9:55:0.4:0.25:2",
-        "Fade In": "afade=t=in:ss=0:d=10",
-        Dimming:
-            "afftfilt=\"'real=re * (1-clip((b/nb)*b,0,1))':imag='im * (1-clip((b/nb)*b,0,1))'\"",
-        Earrape: "channelsplit,sidechaingate=level_in=64"
-    };
-
-    private switches_ = new Set<string>();
-
-    public toggled(): [string, string][] {
-        return Object.entries(Filter.filters)
-            .filter((value) => this.switches_.has(value[0]))
-            .map((value) => [value[0], value[1]]);
-    }
-
-    public toggle(query?: string): boolean {
-        if (!query) {
-            this.switches_.clear();
-            return false;
-        }
-
-        if (!this.switches_.delete(query) && Object.hasOwn(Filter.filters, query)) {
-            this.switches_.add(query);
-            return true;
-        }
-
-        return false;
-    }
-
-    public size(): number {
-        return this.switches_.size;
-    }
-
-    public empty(): boolean {
-        return this.size() === 0;
-    }
-
-    public toString(): string {
-        return this.toggled()
-            .map((value) => value[1])
-            .join(",");
-    }
-}
@@ -1,36 +0,0 @@
-import { Collection, Guild, GuildTextBasedChannel } from "discord.js";
-
-import logger from "../../../lib/logger.js";
-import Player from "./player.js";
-
-export default class Music {
-    private players_ = new Collection<string, Player>();
-
-    public get(guild: Guild, channel?: GuildTextBasedChannel): Player | undefined {
-        const player = this.players_.get(guild.id);
-
-        if (player) {
-            if (channel) {
-                player.channel = channel;
-            }
-
-            return player;
-        }
-    }
-
-    public set(guild: Guild, channel: GuildTextBasedChannel): Player {
-        const player = new Player(guild, this, channel);
-
-        this.players_.set(guild.id, player);
-
-        logger.info("Player was created.", { player });
-
-        return player;
-    }
-
-    public delete(guildId: string): void {
-        logger.info("Player was deleted.", { guildId });
-
-        this.players_.delete(guildId);
-    }
-}
@@ -1,43 +0,0 @@
-import { User } from "discord.js";
-import { downloadOptions } from "ytdl-core";
-
-export interface Track {
-    url: string;
-    title: string;
-    thumbnail: string;
-    duration: number;
-    requester: User;
-}
-
-export type LoopOption = "LOOP" | "SONG" | "NONE" | "AUTO";
-
-export interface YtdlDump {
-    id: string;
-    original_url: string;
-    title?: string;
-    uploader?: string;
-    duration?: number;
-    extractor_key: string;
-    thumbnail?: string;
-}
-
-export interface YtdlResult {
-    url: string;
-    title: string;
-    thumbnail: string;
-    duration: number;
-}
-
-export interface YtdlStreamOptions extends downloadOptions {
-    seek?: number;
-    encoderArgs?: string[];
-    fmt?: string;
-    opusEncoded?: boolean;
-}
-
-export interface StreamOptions {
-    seek?: number;
-    encoderArgs?: string[];
-    fmt?: string;
-    opusEncoded?: boolean;
-}
@@ -1,15 +0,0 @@
-import path from "path";
-import { fileURLToPath } from "url";
-
-import Music from "./lib/music.js";
-
-const name = "music";
-const description = "Music module";
-const author = "unknowableshade";
-const tag = "2.0.0";
-
-const controller = new Music();
-
-const rootDir = path.dirname(fileURLToPath(import.meta.url));
-
-export { author, controller, description, name, rootDir, tag };
@@ -1,95 +0,0 @@
-import {
-    ChatInputCommandInteraction,
-    Events,
-    PermissionFlagsBits,
-    SlashCommandBuilder
-} from "discord.js";
-
-import Client from "../../../lib/client.js";
-import logger from "../../../lib/logger.js";
-import replies from "../lib/replies.js";
-
-async function execute(client: Client, interaction: ChatInputCommandInteraction): Promise<void> {
-    if (!interaction.inCachedGuild()) {
-        logger.warn("Interaction rejected.", { interaction });
-
-        return;
-    }
-
-    const subcommand = interaction.options.getSubcommand();
-    const event = interaction.options.getString("event", true);
-
-    switch (subcommand) {
-        case "role": {
-            const role = interaction.options.getRole("role", true);
-
-            await interaction.deferReply();
-
-            try {
-                await client.db.event.upsert({
-                    where: {
-                        eventIdentifier: {
-                            title: event,
-                            action: subcommand,
-                            guildId: interaction.guildId
-                        }
-                    },
-                    update: { metadata: [role.id] },
-                    create: {
-                        Guild: {
-                            connectOrCreate: {
-                                where: {
-                                    id: interaction.guildId
-                                },
-                                create: {
-                                    id: interaction.guildId
-                                }
-                            }
-                        },
-                        title: event,
-                        action: subcommand,
-                        metadata: [role.id]
-                    }
-                });
-
-                await interaction.editReply(replies.auto("add role to a member", event));
-            } catch (error) {
-                logger.error("Error occured while quering db.", { error });
-            } finally {
-                await client.db.$disconnect();
-            }
-
-            return;
-        }
-    }
-}
-
-const AUTO_EVENT_CHOICES = [
-    {
-        name: "Member Joins",
-        value: Events.GuildMemberAdd
-    }
-];
-
-const data = new SlashCommandBuilder()
-    .setName("auto")
-    .setDescription("Quetza's automatization engine.")
-    .addSubcommand((subcommand) =>
-        subcommand
-            .setName("role")
-            .setDescription("Auto: give role.")
-            .addStringOption((option) =>
-                option
-                    .setName("event")
-                    .setDescription("Event when perfome an action.")
-                    .setChoices(...AUTO_EVENT_CHOICES)
-                    .setRequired(true)
-            )
-            .addRoleOption((option) =>
-                option.setName("role").setDescription("Role to grant on event.").setRequired(true)
-            )
-    )
-    .setDefaultMemberPermissions(PermissionFlagsBits.Administrator)
-    .setDMPermission(false);
-
-export { data, execute };
@@ -1,98 +0,0 @@
-import { ChatInputCommandInteraction, PermissionFlagsBits, SlashCommandBuilder } from "discord.js";
-
-import Client from "../../../lib/client.js";
-import logger from "../../../lib/logger.js";
-import replies from "../lib/replies.js";
-
-async function execute(client: Client, interaction: ChatInputCommandInteraction): Promise<void> {
-    if (!interaction.isChatInputCommand() || !interaction.inCachedGuild()) {
-        logger.warn("Interaction rejected.", { interaction });
-
-        return;
-    }
-
-    const subcommand = interaction.options.getSubcommand();
-
-    switch (subcommand) {
-        case "check": {
-            const user = interaction.options.getUser("member", true);
-
-            const member = await interaction.guild.members.fetch(user).catch(() => undefined);
-
-            if (member) {
-                await interaction.reply(replies.roleList(user.username, member.roles.cache));
-            } else {
-                await interaction.reply(replies.notMember("edited", user));
-            }
-
-            return;
-        }
-
-        case "edit": {
-            const user = interaction.options.getUser("member", true);
-            const role = interaction.options.getRole("role", true);
-            const reason = interaction.options.getString("reason") ?? undefined;
-
-            const member = await interaction.guild.members.fetch(user).catch(() => undefined);
-
-            if (member) {
-                if (member.roles.cache.some((memberRole) => role.id === memberRole.id)) {
-                    await member.roles.remove(role.id, reason);
-                    await interaction.reply(
-                        replies.roleAction("revoked from", interaction.user, role.name, reason)
-                    );
-                } else {
-                    await member.roles.add(role.id, reason);
-                    await interaction.reply(
-                        replies.roleAction("granted to", interaction.user, role.name, reason)
-                    );
-                }
-            } else {
-                await interaction.reply(replies.notMember("edited", user));
-            }
-
-            return;
-        }
-
-        case "list": {
-            const roles = await interaction.guild.roles.fetch();
-
-            await interaction.reply(replies.roleList(interaction.guild.name, roles));
-
-            return;
-        }
-    }
-}
-
-const data = new SlashCommandBuilder()
-    .setName("role")
-    .setDescription("Quetza's role manager.")
-    .addSubcommand((subcommand) =>
-        subcommand.setName("list").setDescription("Role: list guild's roles.")
-    )
-    .addSubcommand((subcommand) =>
-        subcommand
-            .setName("check")
-            .setDescription("Role: check user roles.")
-            .addUserOption((option) =>
-                option.setName("member").setDescription("Member to check.").setRequired(true)
-            )
-    )
-    .addSubcommand((subcommand) =>
-        subcommand
-            .setName("edit")
-            .setDescription("Role: edit role for a specific user.")
-            .addUserOption((option) =>
-                option.setName("member").setDescription("Member to edit.").setRequired(true)
-            )
-            .addRoleOption((option) =>
-                option.setName("role").setDescription("Member's role to edit.").setRequired(true)
-            )
-            .addStringOption((option) =>
-                option.setName("reason").setDescription("Reason for an action.")
-            )
-    )
-    .setDefaultMemberPermissions(PermissionFlagsBits.ManageRoles)
-    .setDMPermission(false);
-
-export { data, execute };
@@ -1,23 +0,0 @@
-import { Events, GuildMember } from "discord.js";
-
-import Client from "../../../lib/client.js";
-
-async function execute(client: Client, eventee: [GuildMember]): Promise<void> {
-    const [member] = eventee;
-
-    try {
-        const event = await client.db.event.findFirst({
-            where: { guildId: member.guild.id, title: name }
-        });
-
-        if (event) {
-            await member.roles.add(event.metadata as string[]);
-        }
-    } finally {
-        await client.db.$disconnect();
-    }
-}
-
-const name = Events.GuildMemberAdd;
-
-export { execute, name };
@@ -1,80 +0,0 @@
-import {
-    BaseMessageOptions,
-    bold,
-    Collection,
-    EmbedBuilder,
-    InteractionReplyOptions,
-    italic,
-    Role,
-    underscore,
-    User
-} from "discord.js";
-
-import config from "../../../config.js";
-
-const replies = {
-    error: (): InteractionReplyOptions => {
-        const embed = new EmbedBuilder()
-            .setColor(config.colors.error)
-            .setTitle("Internal error occured while resolving interaction.")
-            .setDescription("Submit an issue (bio). Logs were saved.")
-            .setTimestamp();
-
-        return { embeds: [embed], ephemeral: true };
-    },
-    notMember: (action: string, user: User): InteractionReplyOptions => {
-        const embed = new EmbedBuilder()
-            .setColor("Blue")
-            .setTitle(`${user.username} cannot be ${action}`)
-            .setDescription("They're not a guild member.")
-            .setTimestamp();
-
-        return { embeds: [embed], ephemeral: true };
-    },
-    roleAction: (
-        action: string,
-        user: User,
-        roleName: string,
-        reason?: string
-    ): InteractionReplyOptions => {
-        const embed = new EmbedBuilder()
-            .setColor(config.colors.success)
-            .setTitle(`Role ${roleName} was ${action} user ${user.username}`)
-            .setDescription(reason ?? "No reason provided.")
-            .setTimestamp();
-
-        return { embeds: [embed], ephemeral: true };
-    },
-    roleList: (observed: string, roles: Collection<string, Role>): InteractionReplyOptions => {
-        const embed = new EmbedBuilder()
-            .setColor(config.colors.success)
-            .setTitle(`${observed} roles:`)
-            .addFields(
-                roles.map((role) => {
-                    return {
-                        name: role.name,
-                        value: italic(role.id)
-                    };
-                })
-            )
-            .setTimestamp();
-
-        return { embeds: [embed], ephemeral: true };
-    },
-    auto: (action: string, event: string): BaseMessageOptions => {
-        const embed = new EmbedBuilder()
-            .setColor(config.colors.success)
-            .setTitle(
-                bold(
-                    `From now I will ${underscore(italic(action))} when ${underscore(
-                        italic(event)
-                    )} event happens`
-                )
-            )
-            .setTimestamp();
-
-        return { embeds: [embed] };
-    }
-};
-
-export default replies;
@@ -1,11 +0,0 @@
-import path from "path";
-import { fileURLToPath } from "url";
-
-const name = "server";
-const description = "Server utilities module";
-const author = "unknowableshade";
-const tag = "0.0.1";
-
-const rootDir = path.dirname(fileURLToPath(import.meta.url));
-
-export { author, description, name, rootDir, tag };
@@ -0,0 +1,15 @@
+{
+  "extends": "../tsconfig.json",
+  "compilerOptions": {
+    "paths": {
+      "$config.js": ["../config.js"],
+      "$lib/*": ["./lib/*"]
+    },
+
+    "rootDir": ".",
+    "outDir": "../dist/src",
+
+    "composite": true
+  },
+  "references": [{ "path": "../config.tsconfig.json" }]
+}
@@ -2,18 +2,20 @@
  "compilerOptions": {
    "strict": true,

-    "module": "ESNext",
-    "moduleResolution": "node",
-    "outDir": "dist",
-    "removeComments": false,
-    "sourceMap": true,
-    "esModuleInterop": true,
-
-    "target": "ESNext",
-    "lib": ["ESNext"],
+    "module": "NodeNext",
+    "moduleResolution": "NodeNext",
+    "resolveJsonModule": true,
    "types": ["node"],
+
+    "outDir": "./dist",
+    "sourceMap": true,
+
+    "esModuleInterop": true,
+    "forceConsistentCasingInFileNames": true,
+
+    "target": "ES2022",
+
    "skipLibCheck": true
  },
-  "include": ["src/**/*"],
-  "exclude": ["node_modules", "dist", "src/commands", "src/events"]
+  "references": [{ "path": "./modules/core" }, { "path": "./modules/music" }]
 }
Author	SHA1	Message	Date
deytenit	8259f76615	Merge branch 'development' of https://github.com/unknowableshade/Quetza into development	2024-03-02 02:05:59 +03:00
deytenit	afc6fce555	Documentation of Music & Core (almost done)	2024-03-02 02:04:00 +03:00
deytenit	be88d20f31	Update README.md	2024-01-30 14:36:57 +03:00
deytenit	811bc3a3c8	Create LICENSE	2024-01-30 14:36:12 +03:00
deytenit	824abc6533	Update README.md	2024-01-30 14:35:43 +03:00
deytenit	3144dd69b7	Refactoring, comments & overall improvements	2024-01-30 14:31:15 +03:00
deytenit	d7421251ba	TSC Build System	2024-01-16 19:20:05 +03:00
deytenit	29fcdcc06f	Runtume version update	2024-01-16 13:33:58 +03:00
deytenit	6587bcd68e	Removing ytdl-core from dependencies	2024-01-13 02:18:43 +03:00
deytenit	ef61f7fa0a	Modules simplification & music logging	2024-01-07 15:39:17 +03:00
deytenit	4ed9e1c6e0	Update README and branding	2023-12-23 02:51:30 +03:00
deytenit	a59faab420	Fix Action Workflow	2023-12-17 19:41:19 +03:00
deytenit	a725290293	Merge commit '3290962' into HEAD	2023-12-07 14:29:17 +03:00
deytenit	6a3425e2c3	Update Dependencies	2023-12-07 14:24:56 +03:00
deytenit	3290962c77	Update Dependencies	2023-12-07 14:20:15 +03:00
deytenit	ace8170323	Comply to Docker Logging	2023-12-06 13:40:18 +03:00