the script i use to clean up m3u8 files

scripts/clean.ts

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+/*
+ * this is a deno script to clean up the m3u8 files from the music player
+ * 
+ */
+
+import { opendir, readFile, writeFile } from 'node:fs/promises';
+import * as path from "jsr:@std/path";
+import { Dirent } from 'node:fs';
+
+/**
+ * longEnough will be true if splitting the line gave 3+ sections, and false if it's too short
+ * 
+ * @param cleanLine 
+ * @returns [cleanLine, longEnough]
+ */
+function replaceLineDashes(cleanLine: string): [string, boolean] {
+    const spl = cleanLine.split(' - ')
+    if (spl.length < 3) {
+        return [spl.join(' // '), false]
+    }
+
+    const [spl1, spl2, ...splRemain] = spl
+    const spl3 = splRemain.join(' - ')
+
+    return [[spl1, spl2, spl3].join(' // '), true]
+}
+
+// loop through every line of the file and clean up each line
+function cleanFile(dirent: Dirent, content: string): string {
+    const lines = content.split('\n')
+    const cleanLines: string[] = []
+    
+    for (let i = 0; i < lines.length; i++) {
+        const line = lines[i].trim()
+
+        if (!line || line.startsWith("#")) {
+            continue
+        }
+
+        const ext = path.extname(line)
+        const name = path.basename(line, ext)
+        
+        let cleanLine = name
+            .replace(/ - Single/g, '')
+            .replace(/- \d+ -/g, '-')
+
+        const [updatedCleanLine, longEnough] = replaceLineDashes(cleanLine)
+        cleanLine = updatedCleanLine
+
+        if (!longEnough) {
+            cleanLine = `BAD LINE --- ${cleanLine}`
+            const fileName = path.basename(dirent.name)
+            console.log(`Bad Line found in ${fileName} on line ${i+1}: \t${line}`)
+        }
+
+        cleanLines.push(cleanLine)
+    }
+
+    return cleanLines.join('\n') + '\n'
+}
+
+// get details from the file, ensure it's a playlist file, then store the updated file contents to a txt file
+async function processFile(dirent: Dirent) {
+    if (dirent.isFile()) {
+        const ext = path.extname(dirent.name)
+        const name = path.basename(dirent.name, ext)
+        const dirname = path.dirname(dirent.name)
+        const newPath = path.join(dirname, `${name}.txt`)
+
+        if (ext.toUpperCase() === ".M3U8") {
+            const fileContent = await readFile(dirent.name)
+            const cleanContent = cleanFile(dirent, fileContent.toString())
+            await writeFile(newPath, cleanContent)
+        }
+    }
+}
+
+// loop through every file in the current directory
+try {
+    const dir = await opendir('./');
+    for await (const dirent of dir) {
+        await processFile(dirent)
+    }
+} catch (err) {
+    console.error(err)
+}