peter
df4a79a1f1
E32 review round 1 (B1, B2, B3, B8). - Plex watch reconcile: a section the server SAYS is empty (totalSize 0, nothing listed) is a complete listing. It read as "cut short" forever, so one empty library stopped un-watches from ever syncing. A listing with no total at all stays incomplete (the client now returns None for it instead of 0), and a whole scan that listed nothing still clears nothing. Tests now cover completeness across two sections, both orders. - Plex collections: no members from a collection whose listing counts some (childCount) keeps the membership we hold, in the full sync and in the targeted resync after a write. - YouTube playlists: no items for a playlist whose listing counts some (itemCount) keeps the mirror in the bulk pull, and is refused as retryable in "reset to YouTube" and in the push plan/merge, where it read as "YouTube deleted them all". The rule sits beside vanished(). - A playlist deleted on YouTube answered "reconnect your account"; it now says it is gone (errors.youtube.gone, HU+EN). - The pure 3-way merge moved to sync/playlist_merge.py; playlists.py is back under 800 lines and off the size list.
776 lines
36 KiB
Python
776 lines
36 KiB
Python
"""Mirror a locally-reachable Plex library into Siftlode's own catalog (plex_* tables).
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Playback is from the local physical file, so this only mirrors METADATA + the physical-media facts
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(codecs/container/path) needed to browse, search, and later play. It reuses Plex's own codec info
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(no ffprobe needed) to classify each item's browser playability. Movies + episodes become playable
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LEAF rows (plex_items); shows/seasons are mirrored for the drill-down + episode ordering.
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The sync is a full reconcile of the enabled sections (upsert by rating_key) AND prunes rows for
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titles that disappeared from Plex: each section diffs the rating_keys it just listed against the ones
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stored, and deletes the stale ones (their watch-state / playlist links cascade). The prune is guarded
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on a NON-empty listing — a section that returns zero items is left untouched, so a transient Plex
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glitch that yields an empty page can't wipe a library (the metadata is cheap to re-sync; an accidental
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mass-delete is the only real risk). Library-level reconcile (dropping a whole removed section, the
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dead `enabled` column) is a separate follow-up. Cast + intro/credit markers are fetched lazily on the
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item-detail/player path (P2), not here.
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"""
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from datetime import datetime, timezone
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from sqlalchemy import func, select
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from sqlalchemy.orm import Session
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from app import logs, sysconfig
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from app.models import PlexCollection, PlexItem, PlexLibrary, PlexSeason, PlexShow
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from app.plex import detail, overlay, people
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from app.plex.client import PlexClient, PlexError, PlexNotConfigured
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from app.plex.genres import hu_genres
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from app.plex.lookups import by_rating_key
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log = logs.get_logger(__name__)
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# Codecs/containers a browser can play in a native <video> without any transcoding.
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_BROWSER_VIDEO = {"h264"}
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_BROWSER_AUDIO = {"aac", "mp3", "opus", "vorbis"}
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_BROWSER_CONTAINER = {"mp4", "mov", "m4v"}
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# Plex section item types.
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_TYPE_MOVIE = 1
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_TYPE_SHOW = 2
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_TYPE_SEASON = 3
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_TYPE_EPISODE = 4
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_PAGE = 200
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def classify_playable(vcodec: str | None, acodec: str | None, container: str | None) -> str:
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"""How the browser can play this file: 'direct' (native <video>), 'remux' (copy video, fix
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container / transcode audio — cheap), or 'transcode' (re-encode video — expensive)."""
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v = (vcodec or "").lower()
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a = (acodec or "").lower()
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c = (container or "").lower()
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if not v or v not in _BROWSER_VIDEO:
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return "transcode"
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if a and a not in _BROWSER_AUDIO:
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return "remux"
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if c and c not in _BROWSER_CONTAINER:
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return "remux"
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return "direct"
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# Video codecs the prod iGPU (UHD 630 / Quick Sync Gen 9.5) can hardware-DECODE — the precondition for
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# the full-GPU VAAPI transcode pipeline. THE single source of this set: plex.stream imports it here so
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# the runtime encoder choice (`_want_hw`) and this catalog facet can never disagree by codec. A source
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# outside it (AV1, MPEG-4 ASP/XviD…) is software-only even on the iGPU (it can't decode it to feed its
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# own encoder).
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HW_DECODABLE_CODECS = frozenset({"h264", "hevc", "h265", "vp9", "vc1", "mpeg2video"})
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# Color-transfer values marking an HDR source (PQ / HLG). A 10-bit/HDR source breaks the VAAPI
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# scale=nv12 path on Gen 9.5 (see plex.stream) → software transcode, so it counts as NOT HW-capable.
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_HDR_TRANSFERS = frozenset({"smpte2084", "arib-std-b67"})
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def transcode_hw_capable(
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playable: str | None,
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vcodec: str | None,
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bit_depth: int | None = None,
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hdr: bool = False,
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) -> bool | None:
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"""The stored `PlexItem.transcode_hw` facet: for a `playable="transcode"` item, whether the prod
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iGPU can HARDWARE-transcode it (else software libx264 only); None for a non-transcode item. HW needs
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a HW-decodable codec AND an 8-bit SDR source — a 10-bit/HDR source (bit_depth>8 or an HDR transfer)
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breaks the VAAPI nv12 pipeline and falls back to software. `bit_depth`/`hdr` are unknown at sync
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time (the cheap listing carries no Stream), so they default to 8-bit SDR (codec-only) and the
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bit-depth backfill refines a 10-bit/HDR HEVC to False later."""
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if playable != "transcode":
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return None
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if (vcodec or "").lower() not in HW_DECODABLE_CODECS:
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return False
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if bit_depth is not None and bit_depth > 8:
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return False
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return not hdr
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def _video_stream_props(meta: dict) -> tuple[int | None, bool]:
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"""(bit_depth, is_hdr) from a FULL Plex metadata dict's video Stream (Media→Part→Stream, streamType
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1). Only the rich metadata call carries Stream; the cheap listing does not — so this is read by the
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bit-depth backfill, not the listing sync. (None, False) when absent/unparseable."""
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for m in meta.get("Media") or []:
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for part in m.get("Part") or []:
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for s in part.get("Stream") or []:
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if s.get("streamType") != 1: # 1 = video
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continue
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bd = s.get("bitDepth")
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try:
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depth = int(bd) if bd else None
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# silent-ok: unknown bit depth, which is also what most listings report. The
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# playback class then falls back to the codec alone, and per-stream noise over a
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# whole library would drown the sync's own lines.
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except (TypeError, ValueError):
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depth = None
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hdr = str(s.get("colorTrc") or "").lower() in _HDR_TRANSFERS
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return depth, hdr
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return None, False
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def _epoch(v) -> datetime | None:
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try:
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return datetime.fromtimestamp(int(v), tz=timezone.utc) if v else None
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# silent-ok: a field Plex leaves out of most listing rows. None is a legitimate stored value,
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# and every caller treats it as "not known" rather than as an error.
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except (TypeError, ValueError, OSError):
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return None
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def _date(v):
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"""Parse a Plex 'YYYY-MM-DD' string (originallyAvailableAt) → date, or None."""
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try:
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return datetime.strptime(v, "%Y-%m-%d").date() if v else None
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# silent-ok: as `_epoch` above — an absent or unparsable air date is stored as no air date.
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except (TypeError, ValueError):
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return None
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def _tags(meta: dict, key: str, limit: int | None = None) -> list | None:
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"""The .tag values of a Plex child-tag array (Genre/Director/Role) present in the listing."""
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vals = [t.get("tag") for t in (meta.get(key) or []) if t.get("tag")]
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if limit:
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vals = vals[:limit]
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return vals or None
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def _rating(meta: dict) -> float | None:
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try:
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return float(meta.get("audienceRating") or meta.get("rating"))
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# silent-ok: TypeError on `float(None)` is the ordinary path — most items carry no rating.
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except (TypeError, ValueError):
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return None
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# Provider preference for the canonical guid (a stable id shared across a title's language twins).
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_GUID_PREFERENCE = ("tmdb", "imdb", "tvdb")
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def _canonical_guid(meta: dict) -> str | None:
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"""The canonical external id used to pair an EN title with its HU-overlay twin (E5 S5). Reads the
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`Guid` array (present only with includeGuids=1 in the listing), preferring tmdb > imdb > tvdb,
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normalised to '<provider>:<id>' (e.g. 'tmdb:12345'). None when no known provider id is present."""
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found: dict[str, str] = {}
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for g in meta.get("Guid") or []:
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raw = str(g.get("id") or "")
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for prov in _GUID_PREFERENCE:
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if raw.startswith(f"{prov}://"):
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found.setdefault(prov, f"{prov}:{raw.split('://', 1)[1]}")
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for prov in _GUID_PREFERENCE:
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if prov in found:
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return found[prov]
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return None
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def _media_facts(meta: dict) -> dict:
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media = meta.get("Media") or []
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if not media:
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return {}
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m = media[0]
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part = (m.get("Part") or [{}])[0]
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return {
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"container": m.get("container") or part.get("container"),
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"codec_video": m.get("videoCodec"),
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"codec_audio": m.get("audioCodec"),
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"size_bytes": part.get("size"),
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"file_path": part.get("file"),
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"part_key": part.get("key"),
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}
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def _dur_s(meta: dict) -> int | None:
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d = meta.get("duration")
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return int(d / 1000) if d else None
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def _enabled_section_keys(db: Session) -> set[str] | None:
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"""The configured allowlist of section keys, or None to mean 'all movie/show sections'."""
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raw = sysconfig.get_str(db, "plex_libraries")
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keys = {k.strip() for k in raw.split(",") if k.strip()}
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return keys or None
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def sync(db: Session) -> dict:
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"""Full reconcile of the enabled movie/show sections. Returns a small stats dict."""
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if not sysconfig.get_bool(db, "plex_enabled"):
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return {"skipped": "disabled"}
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stats = {
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"libraries": 0,
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"movies": 0,
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"shows": 0,
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"seasons": 0,
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"episodes": 0,
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"collections": 0,
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"overlaid": 0,
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"pruned": 0,
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}
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wanted = _enabled_section_keys(db)
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overlay_map = overlay.overlay_map(db) # {huKey: enKey}
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overlay_keys = set(overlay_map)
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try:
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with PlexClient(db) as plex:
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sections = {
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str(s.get("key")): s for s in plex.sections() if s.get("type") in ("movie", "show")
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}
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libs_by_key: dict[str, PlexLibrary] = {}
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# Pass 1 — browsable (non-overlay) sections. HU-overlay sections are handled in pass 2 and
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# are NEVER mirrored as browsable libraries of their own.
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for key, s in sections.items():
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if key in overlay_keys:
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continue
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if wanted is not None and key not in wanted:
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continue
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lib = _upsert_library(db, key, s.get("title") or key, s.get("type"))
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libs_by_key[key] = lib
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stats["libraries"] += 1
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if s.get("type") == "movie":
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_sync_movies(db, plex, lib, stats)
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else:
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_sync_shows(db, plex, lib, stats)
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_sync_collections(db, plex, lib, stats)
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# Commit each section as it completes: a PlexError on a LATER section then keeps the
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# libraries already mirrored (idempotent — the next run reconciles the rest), instead
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# of the old single end-of-loop commit that a late failure rolled back entirely.
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db.commit()
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# Pass 2 — HU overlays. The EN twins are now synced (with guids), so write each overlay
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# section's Hungarian metadata onto the matched EN rows. Requires the EN section to have been
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# synced in pass 1 (in the allowlist / all) and to share the overlay's kind.
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for hu_key, en_key in overlay_map.items():
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s = sections.get(hu_key)
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en_lib = libs_by_key.get(en_key)
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if s is None or en_lib is None or s.get("type") != en_lib.kind:
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log.warning(
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"Plex overlay skipped: hu=%s en=%s (missing section/EN lib or kind mismatch)",
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hu_key,
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en_key,
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)
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continue
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lib = _upsert_library(db, hu_key, s.get("title") or hu_key, s.get("type"))
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lib.metadata_lang = "hu"
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lib.overlay_of = en_lib.id
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db.flush()
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overlay.sync_overlay(db, plex, lib, en_lib.id, stats)
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db.commit()
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# Rich-fetch a bounded batch of not-yet-enriched titles' FULL cast, so the whole library
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# becomes filterable over successive runs (the cheap listing above only stored the top ~3).
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try:
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stats["people_enriched"] = _enrich_people_batch(db, plex)
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except Exception: # best-effort; never fail the sync over a backfill
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# With the traceback: a blind catch over a batch that fetches AND writes can be
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# a Plex shape change, a DB error or our own bug, and `%s` told them apart badly.
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log.exception("the Plex people-enrich batch failed")
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# Probe a bounded batch of HW-decodable transcode items for bit-depth/HDR, so the
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# playback-class filter's HW/SW split is precise (a 10-bit/HDR HEVC → software) over
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# successive runs. Only HW-decodable-codec transcodes are probed — the rest are SW by codec.
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try:
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stats["media_probed"] = _probe_media_batch(db, plex)
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except Exception: # best-effort; never fail the sync over a backfill
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log.exception("the Plex media-probe batch failed")
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# silent-ok: the return value IS the report. `{"skipped": …}` goes to the scheduler, which
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# logs the job result, and to the admin route, which answers it to the caller.
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except PlexNotConfigured as e:
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return {"skipped": str(e)}
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except PlexError as e:
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db.rollback()
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log.warning("Plex sync failed: %s", e)
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return {"error": str(e)}
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# Prune the headshot cache: a reconcile may have removed titles, orphaning people who no longer
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# appear in ANY item's cast/directors — drop those rows, mirroring how Plex drops orphaned metadata.
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try:
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stats["people_pruned"] = people.prune_orphan_people(db)
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except Exception: # best-effort housekeeping; never fail the sync over it
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log.exception("the Plex people prune failed")
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log.info("Plex sync done: %s", stats)
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return stats
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# How many titles to rich-fetch per sync run for the cast backfill — bounds the extra Plex load; the
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# whole library is covered over successive runs (each fetched item is stamped people_enriched_at once).
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_ENRICH_BATCH = 60
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# Same bounded-per-run pattern for the bit-depth probe. Only HW-decodable-codec transcode items are
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# probed (typically a small minority — the bulk of transcodes are old codecs that are SW by codec), so
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# a modest batch covers the work-list in a run or two; a stuck item retries next run (watermark unset).
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_PROBE_BATCH = 60
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def _probe_media_batch(db: Session, plex: PlexClient, limit: int = _PROBE_BATCH) -> int:
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"""Rich-fetch up to `limit` not-yet-probed HW-decodable transcode items, read the video Stream's
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bit-depth + HDR, and store `video_bit_depth` + the refined `transcode_hw` (a 10-bit/HDR HEVC →
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False/software). Stamps `media_probed_at` on every attempt (success OR a Plex miss with no Stream),
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so an item is probed once and not re-fetched every sync; a transient fetch FAILURE leaves the
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watermark unset to retry. Oldest-id first. Returns how many items were probed this run."""
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rows = (
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db.execute(
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select(PlexItem)
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.where(
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PlexItem.playable == "transcode",
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func.lower(PlexItem.codec_video).in_(HW_DECODABLE_CODECS),
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PlexItem.media_probed_at.is_(None),
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)
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.order_by(PlexItem.id)
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.limit(limit)
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)
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.scalars()
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.all()
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)
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now = datetime.now(timezone.utc)
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n = 0
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for row in rows:
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try:
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meta = plex.metadata(row.rating_key) or {}
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# No traceback and only debug: this is per item over a whole library, and the stack is
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# the same `plex.metadata` call every time. The retry next run is the handling.
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except Exception as e: # noqa: BLE001 — transient; leave media_probed_at NULL to retry
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log.debug("Plex media probe fetch failed for %s: %s", row.rating_key, e)
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continue
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bit_depth, hdr = _video_stream_props(meta)
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row.video_bit_depth = bit_depth
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row.transcode_hw = transcode_hw_capable("transcode", row.codec_video, bit_depth, hdr)
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row.media_probed_at = (
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now # probed (even if Plex carried no Stream — don't re-fetch forever)
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)
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n += 1
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db.commit()
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return n
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def _enrich_people_batch(db: Session, plex: PlexClient, limit: int = _ENRICH_BATCH) -> int:
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"""Rich-fetch the FULL cast of up to `limit` not-yet-enriched movies/shows and persist it (via the
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shared enrich_row_people). Oldest-id first, movies before shows. Stamps people_enriched_at only on
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a SUCCESSFUL fetch, so a transient per-item failure retries next run rather than being lost.
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Returns how many items were enriched this run."""
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movies = (
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db.execute(
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select(PlexItem)
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.where(PlexItem.kind == "movie", PlexItem.people_enriched_at.is_(None))
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.order_by(PlexItem.id)
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.limit(limit)
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)
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.scalars()
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.all()
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)
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remaining = limit - len(movies)
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shows = (
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db.execute(
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select(PlexShow)
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.where(PlexShow.people_enriched_at.is_(None))
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.order_by(PlexShow.id)
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.limit(remaining)
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)
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.scalars()
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.all()
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if remaining > 0
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else []
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)
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now = datetime.now(timezone.utc)
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n = 0
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for row in [*movies, *shows]:
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try:
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meta = plex.metadata(row.rating_key) or {}
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# As in `_probe_media_batch` above: per item, so the message without the stack.
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except Exception as e: # noqa: BLE001 — transient; leave people_enriched_at NULL
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log.debug("Plex people enrich fetch failed for %s: %s", row.rating_key, e)
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continue # leave people_enriched_at NULL so it's retried on a later run
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people.enrich_row_people(db, row, people.cast_from_meta(meta))
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detail.apply_rich_detail(
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row, meta
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) # imdb/tagline/full_cast → served from the row, not live
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row.people_enriched_at = now
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n += 1
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db.commit()
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return n
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def _upsert_library(db: Session, key: str, title: str, kind: str) -> PlexLibrary:
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lib = db.execute(select(PlexLibrary).where(PlexLibrary.plex_key == key)).scalars().first()
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if lib is None:
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lib = PlexLibrary(plex_key=key)
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db.add(lib)
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lib.title = title
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lib.kind = kind
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lib.synced_at = datetime.now(timezone.utc)
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db.flush()
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return lib
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def _paginate(plex: PlexClient, key: str, item_type: int, progress: dict | None = None):
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"""Yield a section's items page by page. If `progress` is given, set `progress["complete"]` True
|
|
ONLY when the walk reached the server's reported `total` — a truncated fetch (an empty/short page
|
|
mid-sequence, e.g. a transient Plex hiccup, before `total` is reached) leaves it False so the
|
|
caller can skip pruning. Pruning on a partial listing would delete rows the listing merely failed
|
|
to mention (the metadata is re-syncable, but that still cascades watch-state)."""
|
|
start = 0
|
|
total = None
|
|
while True:
|
|
items, total = plex.section_items(key, item_type, start, _PAGE)
|
|
if not items:
|
|
break
|
|
for it in items:
|
|
yield it
|
|
start += len(items)
|
|
if total and start >= total:
|
|
break
|
|
if len(items) < _PAGE:
|
|
break
|
|
if progress is not None:
|
|
# A truthy `total` we reached = a trustworthy complete listing. `total` unknown/zero-with-rows
|
|
# (a Plex that doesn't report totalSize) is treated as NOT complete, so prune stays conservative.
|
|
# `total` itself is kept for a caller to whom a server that SAID 0 is news it can trust (the
|
|
# watch reconcile); an empty mirror or overlay must not read it so (E32 S2).
|
|
progress["complete"] = bool(total) and start >= total
|
|
progress["total"] = total
|
|
|
|
|
|
# The section listing exposes at most the top ~20 cast (Plex's own cap); a stored cast longer than this
|
|
# can only have come from the rich enrich, never the listing.
|
|
_LISTING_CAST_CAP = 20
|
|
|
|
|
|
def _apply_facet_fields(row, meta: dict) -> None:
|
|
"""Set the filterable/orderable metadata columns shared by plex_items + plex_shows (identical
|
|
column names) from the cheap section listing: rating, content_rating, studio, release date,
|
|
genres/directors/cast, and the searchable people blob folded into search_vector at sync time."""
|
|
row.rating = _rating(meta)
|
|
row.content_rating = meta.get("contentRating") or None
|
|
row.studio = (meta.get("studio") or None) and str(meta.get("studio"))[:255]
|
|
row.originally_available_at = _date(meta.get("originallyAvailableAt"))
|
|
row.genres = _tags(meta, "Genre")
|
|
# Every row has Hungarian genres, not only one with an HU overlay twin (the overlay pass, which runs
|
|
# after this, puts the twin's own list over it): the HU genre facets and filter read this column,
|
|
# and an English word there could never match a filter read in Hungarian.
|
|
row.genres_hu = hu_genres(row.genres)
|
|
row.directors = _tags(meta, "Director")
|
|
# The listing carries only the top ~20 cast, so re-applying it would DOWNGRADE an already-enriched
|
|
# full cast (up to 24, grown by the rich backfill/info-page enrich), silently breaking the
|
|
# person-page cast filter for names past the top ~20. The watermark gate below (`people_enriched_at
|
|
# is None`) normally protects this, but it is NOT enough on its own: a migration that resets the
|
|
# watermark re-opens the regression (0065 nulled it, which is exactly how the S5b fix got undone in
|
|
# prod). So guard STRUCTURALLY too, by LENGTH against the listing cap: a stored cast LONGER than the
|
|
# cap can only be an enriched fuller list, so keep it (robust to any watermark reset). A stored cast
|
|
# at or below the cap is itself listing-sourced, so take the fresh listing — which tracks Plex cast
|
|
# EDITS in EITHER direction (comparing against this listing's length instead would silently keep a
|
|
# stale longer cast when Plex TRIMS one).
|
|
if row.people_enriched_at is None:
|
|
listing_cast = _tags(meta, "Role", limit=_LISTING_CAST_CAP)
|
|
if len(row.cast_names or []) <= _LISTING_CAST_CAP:
|
|
row.cast_names = listing_cast
|
|
people = list(dict.fromkeys((row.directors or []) + (row.cast_names or [])))
|
|
row.people_text = " ".join(people) or None
|
|
|
|
|
|
def _apply_item(row: PlexItem, lib_id: int, kind: str, meta: dict) -> None:
|
|
row.library_id = lib_id
|
|
row.kind = kind
|
|
# EN<->HU pairing key (movies; harmless/unused on episodes). Keep the prior guid if this listing
|
|
# carries none (a server ignoring includeGuids mustn't wipe the overlay's only match key).
|
|
row.guid = _canonical_guid(meta) or row.guid
|
|
row.title = (meta.get("title") or "").strip() or "Untitled"
|
|
row.summary = meta.get("summary")
|
|
row.year = meta.get("year")
|
|
row.duration_s = _dur_s(meta)
|
|
row.thumb_key = meta.get("thumb")
|
|
row.art_key = meta.get("art") or meta.get("grandparentArt")
|
|
row.added_at = _epoch(meta.get("addedAt"))
|
|
_apply_facet_fields(row, meta) # filterable/orderable extras (shared with shows)
|
|
mf = _media_facts(meta)
|
|
new_vcodec = mf.get("codec_video")
|
|
new_part_key = mf.get("part_key")
|
|
# The physical file was replaced when its video codec changes OR — for a SINGLE-version item — when its
|
|
# Plex Part key changes (a re-encode / quality upgrade gets a new part id). Either way any probed
|
|
# bit-depth is stale, so reset the probe watermark and re-derive transcode_hw from codec alone until the
|
|
# backfill re-probes. Codec alone is NOT enough: a same-codec bit-depth re-encode (8-bit→10-bit HEVC)
|
|
# keeps the codec `hevc` but flips the HW class, and only the part-key move catches it.
|
|
#
|
|
# The part-key check is gated on single-version because `_media_facts` reads media[0]/part[0], and for a
|
|
# MULTI-version item (an original + a Plex "Optimized" copy) that order isn't guaranteed stable across
|
|
# listings — an unguarded part-key compare would then reset+re-probe every sync and oscillate the
|
|
# transcode_hw bucket between the two versions. A multi-version same-codec re-encode not self-healing is
|
|
# an acceptable rare edge; a per-sync re-probe loop is not.
|
|
single_version = len(meta.get("Media") or []) <= 1
|
|
codec_changed = (row.codec_video or "").lower() != (new_vcodec or "").lower()
|
|
if codec_changed or (single_version and row.part_key != new_part_key):
|
|
row.video_bit_depth = None
|
|
row.media_probed_at = None
|
|
row.file_path = mf.get("file_path")
|
|
row.part_key = new_part_key
|
|
row.container = mf.get("container")
|
|
row.codec_video = new_vcodec
|
|
row.codec_audio = mf.get("codec_audio")
|
|
row.size_bytes = mf.get("size_bytes")
|
|
row.playable = classify_playable(
|
|
mf.get("codec_video"), mf.get("codec_audio"), mf.get("container")
|
|
)
|
|
# transcode_hw: keep the bit-depth backfill's authoritative value (it folds in bit-depth + HDR) once
|
|
# probed; otherwise (re)derive the provisional codec-only class. A non-transcode item is always None,
|
|
# even if it had been probed as a transcode before (an audio/container flip to remux without a codec
|
|
# change wouldn't reset the watermark, so pin it here).
|
|
if row.playable != "transcode":
|
|
row.transcode_hw = None
|
|
elif row.media_probed_at is None:
|
|
row.transcode_hw = transcode_hw_capable("transcode", row.codec_video, row.video_bit_depth)
|
|
|
|
|
|
def _prune_stale(
|
|
db: Session, existing: dict, seen: set[str], stats: dict, *, complete: bool
|
|
) -> None:
|
|
"""Delete stored rows whose rating_key is no longer in the freshly-listed `seen` set — the titles
|
|
that disappeared from Plex (their watch-state / playlist links cascade via the FKs). GUARDED on a
|
|
COMPLETE, non-empty listing: a truncated fetch (`complete` False — a mid-sequence empty/short page
|
|
before the server's total) or a zero-item listing prunes NOTHING, so a transient Plex hiccup can
|
|
never wipe a library over rows it merely failed to list. Callers pass the rating_key -> row map
|
|
they already built for the upsert."""
|
|
if not complete or not seen:
|
|
return
|
|
for rk, row in existing.items():
|
|
if rk not in seen:
|
|
db.delete(row)
|
|
stats["pruned"] = stats.get("pruned", 0) + 1
|
|
db.flush()
|
|
|
|
|
|
def _sync_movies(db: Session, plex: PlexClient, lib: PlexLibrary, stats: dict) -> None:
|
|
existing = {
|
|
r.rating_key: r
|
|
for r in db.execute(
|
|
select(PlexItem).where(PlexItem.library_id == lib.id, PlexItem.kind == "movie")
|
|
).scalars()
|
|
}
|
|
seen: set[str] = set()
|
|
progress: dict = {}
|
|
for meta in _paginate(plex, lib.plex_key, _TYPE_MOVIE, progress):
|
|
rk = str(meta.get("ratingKey") or "")
|
|
if not rk:
|
|
continue
|
|
row = existing.get(rk) or PlexItem(rating_key=rk)
|
|
if row.id is None:
|
|
db.add(row)
|
|
_apply_item(row, lib.id, "movie", meta)
|
|
seen.add(rk)
|
|
stats["movies"] += 1
|
|
db.flush()
|
|
_prune_stale(db, existing, seen, stats, complete=progress.get("complete", False))
|
|
|
|
|
|
def _sync_shows(db: Session, plex: PlexClient, lib: PlexLibrary, stats: dict) -> None:
|
|
# 1) shows
|
|
shows = {
|
|
r.rating_key: r
|
|
for r in db.execute(select(PlexShow).where(PlexShow.library_id == lib.id)).scalars()
|
|
}
|
|
shows_seen: set[str] = set()
|
|
shows_progress: dict = {}
|
|
for meta in _paginate(plex, lib.plex_key, _TYPE_SHOW, shows_progress):
|
|
rk = str(meta.get("ratingKey") or "")
|
|
if not rk:
|
|
continue
|
|
shows_seen.add(rk)
|
|
sh = shows.get(rk) or PlexShow(rating_key=rk)
|
|
if sh.id is None:
|
|
db.add(sh)
|
|
shows[rk] = sh
|
|
sh.library_id = lib.id
|
|
sh.guid = (
|
|
_canonical_guid(meta) or sh.guid
|
|
) # EN<->HU pairing key; keep prior if listing has none
|
|
sh.title = (meta.get("title") or "").strip() or "Untitled"
|
|
sh.summary = meta.get("summary")
|
|
sh.year = meta.get("year")
|
|
sh.thumb_key = meta.get("thumb")
|
|
sh.art_key = meta.get("art")
|
|
sh.child_count = meta.get("childCount")
|
|
sh.added_at = _epoch(meta.get("addedAt"))
|
|
_apply_facet_fields(sh, meta) # same filterable/orderable tags as movies
|
|
stats["shows"] += 1
|
|
db.flush()
|
|
show_id = {rk: sh.id for rk, sh in shows.items()}
|
|
|
|
# 2) seasons
|
|
seasons = {
|
|
r.rating_key: r
|
|
for r in db.execute(
|
|
select(PlexSeason).join(PlexShow).where(PlexShow.library_id == lib.id)
|
|
).scalars()
|
|
}
|
|
seasons_seen: set[str] = set()
|
|
seasons_progress: dict = {}
|
|
for meta in _paginate(plex, lib.plex_key, _TYPE_SEASON, seasons_progress):
|
|
rk = str(meta.get("ratingKey") or "")
|
|
sid = show_id.get(str(meta.get("parentRatingKey") or ""))
|
|
if not rk or sid is None:
|
|
continue
|
|
seasons_seen.add(rk)
|
|
se = seasons.get(rk) or PlexSeason(rating_key=rk)
|
|
if se.id is None:
|
|
db.add(se)
|
|
seasons[rk] = se
|
|
se.show_id = sid
|
|
se.title = meta.get("title")
|
|
se.season_number = meta.get("index")
|
|
se.thumb_key = meta.get("thumb")
|
|
stats["seasons"] += 1
|
|
db.flush()
|
|
season_id = {rk: se.id for rk, se in seasons.items()}
|
|
|
|
# 3) episodes (playable leaves)
|
|
episodes = {
|
|
r.rating_key: r
|
|
for r in db.execute(
|
|
select(PlexItem).where(PlexItem.library_id == lib.id, PlexItem.kind == "episode")
|
|
).scalars()
|
|
}
|
|
episodes_seen: set[str] = set()
|
|
episodes_progress: dict = {}
|
|
for meta in _paginate(plex, lib.plex_key, _TYPE_EPISODE, episodes_progress):
|
|
rk = str(meta.get("ratingKey") or "")
|
|
if not rk:
|
|
continue
|
|
episodes_seen.add(rk)
|
|
row = episodes.get(rk) or PlexItem(rating_key=rk)
|
|
if row.id is None:
|
|
db.add(row)
|
|
_apply_item(row, lib.id, "episode", meta)
|
|
row.show_id = show_id.get(str(meta.get("grandparentRatingKey") or ""))
|
|
row.season_id = season_id.get(str(meta.get("parentRatingKey") or ""))
|
|
row.season_number = meta.get("parentIndex")
|
|
row.episode_number = meta.get("index")
|
|
stats["episodes"] += 1
|
|
db.flush()
|
|
|
|
# Prune leaf-first (episodes -> seasons -> shows) so a stale row is deleted directly, before its
|
|
# parent's cascade would reach it — avoids deleting the same ORM object twice. Each level is
|
|
# independently guarded on a non-empty listing by _prune_stale.
|
|
_prune_stale(
|
|
db, episodes, episodes_seen, stats, complete=episodes_progress.get("complete", False)
|
|
)
|
|
_prune_stale(db, seasons, seasons_seen, stats, complete=seasons_progress.get("complete", False))
|
|
_prune_stale(db, shows, shows_seen, stats, complete=shows_progress.get("complete", False))
|
|
|
|
|
|
def _upsert_collection(
|
|
db: Session, existing: PlexCollection | None, rk: str, lib_id: int, meta: dict
|
|
) -> PlexCollection:
|
|
"""Get-or-create a PlexCollection row and apply its metadata from a Plex `meta` dict. `editable`
|
|
is user-managed and preserved (never set here). Shared by the full sync + the targeted re-sync."""
|
|
col = existing or PlexCollection(rating_key=rk)
|
|
if col.id is None:
|
|
db.add(col)
|
|
col.library_id = lib_id
|
|
col.title = (meta.get("title") or "").strip() or "Untitled"
|
|
col.summary = meta.get("summary")
|
|
col.thumb_key = meta.get("thumb")
|
|
col.child_count = meta.get("childCount")
|
|
col.smart = str(meta.get("smart")) == "1"
|
|
col.synced_at = datetime.now(timezone.utc)
|
|
return col
|
|
|
|
|
|
def resync_collection(db: Session, plex: PlexClient, lib: PlexLibrary, rk: str) -> PlexCollection:
|
|
"""Targeted re-sync of ONE collection after a write-back (create/add/remove/rename) — avoids the
|
|
full ~4-min library sync. Upserts the row (preserving `editable`) and reconciles ONLY this
|
|
collection's membership on the affected member rows."""
|
|
meta = plex.metadata(rk) or {}
|
|
col = _upsert_collection(db, by_rating_key(db, PlexCollection, rk), rk, lib.id, meta)
|
|
Model = PlexItem if lib.kind == "movie" else PlexShow
|
|
children = _believed_children(plex, rk, meta)
|
|
if children is None:
|
|
db.flush()
|
|
return col
|
|
new_members = {str(c.get("ratingKey")) for c in children if c.get("ratingKey")}
|
|
current = db.execute(select(Model).where(Model.collection_keys.contains([rk]))).scalars().all()
|
|
for row in current: # drop rk from rows that are no longer members
|
|
if row.rating_key not in new_members:
|
|
row.collection_keys = [k for k in (row.collection_keys or []) if k != rk] or None
|
|
to_add = new_members - {r.rating_key for r in current}
|
|
if to_add:
|
|
for row in db.execute(select(Model).where(Model.rating_key.in_(to_add))).scalars():
|
|
row.collection_keys = list(dict.fromkeys([*(row.collection_keys or []), rk]))
|
|
db.flush()
|
|
return col
|
|
|
|
|
|
def _believed_children(plex: PlexClient, rk: str, meta: dict) -> list[dict] | None:
|
|
"""A collection's members, or None when the answer is not believed: no members from a collection
|
|
whose own listing counts some (`childCount`) is a glitch, not a collection emptied — the same
|
|
empty-answer rule as the collection listing's (E32 review). Rebuilding on it showed the
|
|
collection empty until the next sync."""
|
|
children = plex.collection_children(rk)
|
|
count = str(meta.get("childCount") or "0")
|
|
if children or not count.isdigit() or int(count) == 0:
|
|
return children
|
|
log.warning(
|
|
"Plex listed no members for a non-empty collection; keeping its membership",
|
|
extra=logs.event("plex.sync.collection_children_empty", collection=rk),
|
|
)
|
|
return None
|
|
|
|
|
|
def delete_collection_local(db: Session, lib: PlexLibrary, rk: str) -> None:
|
|
"""Local cleanup after a collection is deleted from Plex: strip rk from members + drop the row."""
|
|
Model = PlexItem if lib.kind == "movie" else PlexShow
|
|
for row in db.execute(select(Model).where(Model.collection_keys.contains([rk]))).scalars():
|
|
row.collection_keys = [k for k in (row.collection_keys or []) if k != rk] or None
|
|
col = by_rating_key(db, PlexCollection, rk)
|
|
if col is not None:
|
|
db.delete(col)
|
|
db.flush()
|
|
|
|
|
|
def _rebuild_membership(
|
|
db: Session, lib: PlexLibrary, membership: dict[str, list[str]], kept: set[str]
|
|
) -> None:
|
|
"""Rebuild collection_keys on every member row of this library (clear + set), carrying over the
|
|
keys of a collection whose empty answer was not believed (`_believed_children`)."""
|
|
for Model in (PlexItem, PlexShow):
|
|
for row in db.execute(select(Model).where(Model.library_id == lib.id)).scalars():
|
|
held = [k for k in (row.collection_keys or []) if k in kept]
|
|
keys = [*membership.get(row.rating_key, []), *held]
|
|
row.collection_keys = list(dict.fromkeys(keys)) or None
|
|
db.flush()
|
|
|
|
|
|
def _sync_collections(db: Session, plex: PlexClient, lib: PlexLibrary, stats: dict) -> None:
|
|
"""Mirror a library's collections + membership. Reads never touch Plex afterwards. Membership is
|
|
written as `collection_keys` on member movies (plex_items) / shows (plex_shows). A full reconcile:
|
|
collections gone from Plex are pruned, and each member row's keys are rebuilt from scratch."""
|
|
cols = plex.collections(lib.plex_key)
|
|
existing = {
|
|
c.rating_key: c
|
|
for c in db.execute(
|
|
select(PlexCollection).where(PlexCollection.library_id == lib.id)
|
|
).scalars()
|
|
}
|
|
if not cols and existing:
|
|
# The catalog's own rule (see the module doc): an empty listing while we hold rows is a Plex
|
|
# glitch, not a library emptied of collections. Reconciling on it dropped every collection
|
|
# (its user-set `editable` flag with it) and every member's keys (E32 S2).
|
|
log.warning(
|
|
"Plex listed no collections for a library that has some; keeping them this run",
|
|
extra=logs.event("plex.sync.collections_empty", library=lib.plex_key),
|
|
)
|
|
return
|
|
seen: set[str] = set()
|
|
kept: set[str] = set() # collections whose empty children answer is not believed
|
|
membership: dict[str, list[str]] = {} # member rating_key -> [collection rating_key, ...]
|
|
for meta in cols:
|
|
rk = str(meta.get("ratingKey") or "")
|
|
if not rk:
|
|
continue
|
|
_upsert_collection(db, existing.get(rk), rk, lib.id, meta)
|
|
seen.add(rk)
|
|
children = _believed_children(plex, rk, meta)
|
|
if children is None:
|
|
kept.add(rk)
|
|
for child in children or []:
|
|
crk = str(child.get("ratingKey") or "")
|
|
if crk:
|
|
membership.setdefault(crk, []).append(rk)
|
|
stats["collections"] += 1
|
|
db.flush()
|
|
for rk, col in existing.items():
|
|
if rk not in seen:
|
|
db.delete(col)
|
|
_rebuild_membership(db, lib, membership, kept)
|