youtube: search_youtube via yt-dlp ytsearchN + parse JSON

core/youtube_search.py

@@ -0,0 +1,72 @@
+"""Ricerca su YouTube via yt-dlp (subprocess, flat playlist metadata)."""
+
+from __future__ import annotations
+
+import json
+import subprocess
+
+from core.paths import find_ytdlp, subprocess_flags
+
+
+_TIMEOUT_SEC = 30
+
+
+def search_youtube(query: str, limit: int = 50) -> list:
+    """Cerca su YouTube (ytsearchN:query) e ritorna metadata "flat" (senza scaricare).
+
+    Args:
+        query: testo di ricerca libero
+        limit: numero massimo di risultati (default 50)
+
+    Returns:
+        list[dict] con {id, url, title, channel, duration_sec}. Vuota se nessun match.
+
+    Raises:
+        RuntimeError: se yt-dlp non disponibile, timeout, o exit non-zero.
+    """
+    ytdlp = find_ytdlp()
+    if not ytdlp:
+        raise RuntimeError("yt-dlp non trovato nel bundle / PATH")
+
+    cmd = [
+        ytdlp,
+        "--flat-playlist",
+        "--dump-single-json",
+        "--no-warnings",
+        f"ytsearch{limit}:{query}",
+    ]
+    try:
+        proc = subprocess.run(
+            cmd,
+            capture_output=True,
+            text=True,
+            timeout=_TIMEOUT_SEC,
+            **subprocess_flags(),
+        )
+    except subprocess.TimeoutExpired as e:
+        raise RuntimeError(f"Timeout ricerca YouTube ({_TIMEOUT_SEC}s)") from e
+
+    if proc.returncode != 0:
+        tail = (proc.stderr or "").strip().splitlines()[-3:]
+        raise RuntimeError(f"yt-dlp error: {' | '.join(tail) or 'unknown'}")
+
+    try:
+        data = json.loads(proc.stdout)
+    except json.JSONDecodeError as e:
+        raise RuntimeError(f"yt-dlp output non-JSON: {e}") from e
+
+    entries = data.get("entries") or []
+    result: list = []
+    for e in entries:
+        if not isinstance(e, dict):
+            continue
+        video_id = e.get("id") or ""
+        url = e.get("url") or (f"https://www.youtube.com/watch?v={video_id}" if video_id else "")
+        result.append({
+            "id": video_id,
+            "url": url,
+            "title": e.get("title") or "",
+            "channel": e.get("uploader") or e.get("channel") or "",
+            "duration_sec": int(e.get("duration") or 0),
+        })
+    return result