Add edit dialogs, library organizer, and TMDb pool migration

src/core/series.py

@@ -76,9 +76,27 @@ def season_folder_name(season: int) -> str:
     return "Specials" if season == 0 else f"Season {season:02d}"
 
 
-def episode_filename(series_title: str, season: int, episode: int, ext: str) -> str:
-    """Canonical episode filename ``Series SxxEyy.ext``."""
-    return f"{series_title} S{season:02d}E{episode:02d}{ext}"
+def episode_body(stem: str) -> str:
+    """The descriptive part of an episode filename, minus a leading ``SxxEyy`` code.
+
+    Keeps the original (release) filename so it survives into the canonical name,
+    while stripping an already-applied ``SxxEyy - `` prefix so repeated renames
+    don't double it. Returns ``""`` when the stem was only the code.
+    """
+    s = _EPISODE_RE.sub("", stem, count=1)          # drop the SxxEyy/NxNN token
+    s = re.sub(r"([\s._-])[\s._-]+", r"\1", s)       # collapse separator runs
+    return s.strip(" ._-")
+
+
+def episode_filename(season: int, episode: int, orig_stem: str, ext: str) -> str:
+    """Canonical episode filename ``SxxEyy - {original name}.ext``.
+
+    Keeps the original filename after the code; when the original was only the
+    code (nothing descriptive left) it collapses to ``SxxEyy.ext``.
+    """
+    code = f"S{season:02d}E{episode:02d}"
+    body = episode_body(orig_stem)
+    return f"{code} - {body}{ext}" if body else f"{code}{ext}"
 
 
 def series_folder_stem(title: str, year: object = None, tmdb_id: object = None) -> str:
@@ -97,13 +115,13 @@ def series_folder_stem(title: str, year: object = None, tmdb_id: object = None)
     return f"{title} [tmdbid-{id_s}]" if id_s.isdigit() else title
 
 
-def is_canonical_episode(path: Path, series_title: str) -> bool:
-    """True when ``path`` already follows ``Series SxxEyy`` in the right season."""
+def is_canonical_episode(path: Path) -> bool:
+    """True when ``path`` already follows ``SxxEyy - name`` in the right season."""
     parsed = parse_episode(path.name)
     if parsed is None:
         return False
     season, episode = parsed
-    expected = episode_filename(series_title, season, episode, path.suffix)
+    expected = episode_filename(season, episode, path.stem, path.suffix)
     if path.name != expected:
         return False
     return path.parent.name == season_folder_name(season)