Refactoring, comments & overall improvements

modules/music/lib/misc.ts

@@ -0,0 +1,59 @@
+import { AudioResource } from "@discordjs/voice";
+
+import { LoopOption, Track } from "./types.js";
+
+const STATUSBAR_LENGTH = 15;
+
+export function statusBarGenerator(resource?: AudioResource<Track>): string {
+    const duration = resource?.metadata.duration || 1;
+    const playback = Math.min((resource?.playbackDuration || 0) / 1000, duration);
+
+    const filled = Array<string>(Math.floor((STATUSBAR_LENGTH * playback) / duration)).fill("🔹");
+
+    const empty = Array<string>(STATUSBAR_LENGTH - filled.length).fill("▫️");
+
+    return `[${filled.join("")}${empty.join("")}] ${toISOTime(playback)}/${toISOTime(duration)}`;
+}
+
+export function toISOTime(amount: number): string {
+    const h = Math.floor(amount / 3600);
+    const m = Math.floor((amount % 3600) / 60);
+    const s = Math.floor((amount % 3600) % 60);
+
+    const hDisplay = h > 0 ? `${h}:` : "";
+    const mDisplay = `${Math.floor(m / 10)}${Math.floor(m % 10)}:`;
+    const sDisplay = `${Math.floor(s / 10)}${Math.floor(s % 10)}`;
+
+    return hDisplay + mDisplay + sDisplay;
+}
+
+export async function asleep(amount: number): Promise<unknown> {
+    return new Promise((r) => setTimeout(r, amount));
+}
+
+export function volumeMoji(amount: number): string {
+    return amount > 100 ? "🔊" : amount > 50 ? "🔉" : amount > 0 ? "🔈" : "🔇";
+}
+
+export function loopMoji(loop: LoopOption): string {
+    return loop === "AUTO" ? "🔀" : loop === "LOOP" ? "🔁" : loop === "NONE" ? "⤵️" : "🔂";
+}
+
+export function largestCommonSequence(s1: string, s2: string) {
+    s1 = s1.toLowerCase().slice(0, 100);
+    s2 = s2.toLowerCase().slice(0, 100);
+
+    const buffer = Array.from(Array(s1.length + 1), () => new Array<number>(s2.length + 1).fill(0));
+
+    for (let i = 1; i <= s1.length; i++) {
+        for (let j = 1; j <= s2.length; j++) {
+            if (s1[i - 1] === s2[j - 1]) {
+                buffer[i][j] = buffer[i - 1][j - 1] + 1;
+            } else {
+                buffer[i][j] = Math.max(buffer[i - 1][j], buffer[i][j - 1]);
+            }
+        }
+    }
+
+    return buffer[s1.length][s2.length];
+}