feat: add YouTube segments CLI using yt-dlp

src/cli/args.ts

@@ -0,0 +1,58 @@
+export interface CliArgs {
+  url?: string;
+  output: string;
+  format: string;
+  noChapters: boolean;
+}
+
+export function parseArgs(): CliArgs {
+  const args: CliArgs = {
+    output: "./downloads",
+    format: "best",
+    noChapters: false,
+  };
+
+  const rawArgs = Bun.argv;
+  
+  for (let i = 0; i < rawArgs.length; i++) {
+    const arg = rawArgs[i];
+    const nextArg = rawArgs[i + 1];
+
+    if (arg === "-o" || arg === "--output") {
+      args.output = nextArg || "./downloads";
+      i++;
+    } else if (arg === "-f" || arg === "--format") {
+      args.format = nextArg || "best";
+      i++;
+    } else if (arg === "--no-chapters") {
+      args.noChapters = true;
+    } else if (arg === "-h" || arg === "--help") {
+      console.log(`YouTube Video Segments Downloader
+
+Usage: yt-segments <url> [options]
+
+Arguments:
+  <url>              YouTube video URL (required)
+
+Options:
+  -o, --output <dir>    Output directory (default: ./downloads)
+  -f, --format <fmt>    Video format (default: best)
+  --no-chapters         Skip chapter extraction
+  -h, --help            Show this help message
+
+Examples:
+  yt-segments "https://www.youtube.com/watch?v=abc123"
+  yt-segments "https://youtu.be/abc123" -o ./videos -f mp4
+  yt-segments "https://www.youtube.com/watch?v=abc123" --no-chapters
+`);
+      process.exit(0);
+    } else if (!arg.startsWith("-") && !arg.includes("bun")) {
+      // This is likely the URL
+      if (!arg.startsWith("bun") && !arg.includes("node")) {
+        args.url = arg;
+      }
+    }
+  }
+
+  return args;
+}