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Fix comments (Python API), add dislike bar

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Comments: switch from CLI --write-comments to yt-dlp Python API with
getcomments=True — more reliable, proper extractor_args dict format

Dislikes: add dislike_count column, fetch from returnyoutubedislike.com
after each video metadata upsert (5s timeout, non-fatal)

UI: replace emoji like count with a like/dislike ratio bar — blue fill
showing like proportion, labels on each end; views stay in meta row

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Mattias Tall
2026-05-26 11:33:00 +02:00
parent c9e64d2814
commit 74e2b4cd73
5 changed files with 83 additions and 22 deletions
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73
backend/services/ytdlp.py
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@@ -76,6 +76,7 @@ def _normalize_video(info: dict) -> dict:
"chapters": json.dumps(chapters) if chapters else None,
"view_count": info.get("view_count"),
"like_count": info.get("like_count"),
"dislike_count": info.get("dislike_count"),
"channel": {
"youtube_channel_id": info.get("channel_id"),
"name": info.get("channel") or info.get("uploader", ""),
@@ -385,24 +386,47 @@ def fetch_channel_links(channel_id: str) -> list[str]:
def fetch_video_comments(youtube_video_id: str, max_comments: int = 20) -> list[dict]:
"""Fetch top comments for a single video. Returns empty list on failure."""
url = f"https://www.youtube.com/watch?v={youtube_video_id}"
args = [
"yt-dlp", url,
"--dump-json",
"--write-comments",
"--extractor-args", f"youtube:max_comments={max_comments};comment_sort=top",
"--no-download",
"--no-playlist",
"--quiet",
*_cookie_args(),
]
stdout, _, code = _run(args, timeout=60)
if not stdout.strip():
return []
"""Fetch top comments via yt-dlp Python API. Returns empty list on failure."""
import yt_dlp as _yt_dlp
with _cookies_lock:
cf = _cookies_file
b = _cookies_browser
oauth2 = _use_oauth2
ydl_opts = {
"quiet": True,
"no_warnings": True,
"skip_download": True,
"getcomments": True,
"extractor_args": {
"youtube": {
"max_comments": [str(max_comments), str(max_comments)],
"comment_sort": ["top"],
}
},
}
if oauth2:
ydl_opts["username"] = "oauth2"
ydl_opts["password"] = ""
elif cf and Path(cf).exists():
ydl_opts["cookiefile"] = cf
else:
for candidate in _AUTO_COOKIES_PATHS:
if Path(candidate).exists():
ydl_opts["cookiefile"] = candidate
break
else:
if b and not cf:
ydl_opts["cookiesfrombrowser"] = (b,)
try:
info = json.loads(stdout.strip())
except json.JSONDecodeError:
with _yt_dlp.YoutubeDL(ydl_opts) as ydl:
info = ydl.extract_info(f"https://www.youtube.com/watch?v={youtube_video_id}", download=False)
except Exception:
return []
if not info:
return []
result = []
@@ -410,20 +434,29 @@ def fetch_video_comments(youtube_video_id: str, max_comments: int = 20) -> list[
if c.get("parent") not in (None, "root"):
continue # skip replies
ts = c.get("timestamp")
published_at = datetime.utcfromtimestamp(ts) if ts else None
result.append({
"youtube_comment_id": c.get("id"),
"author": c.get("author"),
"text": c.get("text"),
"likes": c.get("like_count") or 0,
"is_pinned": bool(c.get("is_pinned")),
"published_at": published_at,
"published_at": datetime.utcfromtimestamp(ts) if ts else None,
})
# Sort pinned first, then by likes
result.sort(key=lambda c: (not c["is_pinned"], -(c["likes"] or 0)))
return result[:max_comments]
def fetch_dislike_count(youtube_video_id: str) -> int | None:
"""Fetch dislike count from returnyoutubedislike.com (crowdsourced)."""
try:
url = f"https://returnyoutubedislikeapi.com/votes?videoId={youtube_video_id}"
with urllib.request.urlopen(url, timeout=5) as resp:
data = json.loads(resp.read())
return data.get("dislikes")
except Exception:
return None
QUALITY_FORMATS = {
"best": "bestvideo[ext=mp4][vcodec^=avc1]+bestaudio[ext=m4a]/bestvideo[ext=mp4]+bestaudio[ext=m4a]/22/18/bestvideo+bestaudio/best",
"2160p": "bestvideo[ext=mp4][height<=2160]+bestaudio[ext=m4a]/bestvideo[height<=2160]+bestaudio/best[height<=2160]",