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169
backend/app/watched.py
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169
backend/app/watched.py
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"""Bereits geschaute Filme und ihre Bewertungen.
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Der Host trägt ein, was am Abend lief. Bewerten darf jeder, eine Stimme
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je Sitzung — dieselbe Cookie-Sitzung wie bei den Vorschlägen. Der Name ist
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freiwillig, ohne ihn zählt die Stimme trotzdem.
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Titel und Poster werden mitgespeichert, damit ein Eintrag lesbar bleibt,
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auch wenn der Film später aus dem Katalog fällt.
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"""
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from datetime import datetime, timezone
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from .db import connect
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SCHEMA = """
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CREATE TABLE IF NOT EXISTS watched (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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movie_id INTEGER NOT NULL UNIQUE,
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title TEXT NOT NULL,
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year INTEGER,
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poster_path TEXT,
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watched_at TEXT NOT NULL,
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hidden INTEGER NOT NULL DEFAULT 0
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);
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CREATE TABLE IF NOT EXISTS ratings (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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watched_id INTEGER NOT NULL,
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session_id TEXT NOT NULL,
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stars INTEGER NOT NULL,
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name TEXT,
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created_at TEXT NOT NULL,
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UNIQUE (watched_id, session_id)
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);
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"""
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MAX_STERNE = 5
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def init():
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with connect() as conn:
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conn.executescript(SCHEMA)
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# Die Tabelle stand vor der Spalte schon in bestehenden Datenbanken
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spalten = {r["name"] for r in conn.execute("PRAGMA table_info(watched)")}
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if "hidden" not in spalten:
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conn.execute(
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"ALTER TABLE watched ADD COLUMN hidden INTEGER NOT NULL DEFAULT 0"
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)
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def _jetzt():
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return datetime.now(timezone.utc).isoformat(timespec="seconds")
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def alle(session_id):
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"""Zuletzt geschaut zuerst, mit Schnitt und der eigenen Stimme."""
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with connect() as conn:
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filme = conn.execute(
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"SELECT * FROM watched ORDER BY watched_at DESC, id DESC"
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).fetchall()
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stimmen = conn.execute(
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"SELECT watched_id, session_id, stars, name FROM ratings "
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"ORDER BY created_at ASC"
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).fetchall()
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je_film = {}
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for s in stimmen:
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je_film.setdefault(s["watched_id"], []).append(s)
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out = []
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for film in filme:
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eigene = je_film.get(film["id"], [])
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werte = [s["stars"] for s in eigene]
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out.append(
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{
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**dict(film),
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"ratings": [
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{"stars": s["stars"], "name": s["name"]} for s in eigene
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],
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"average": round(sum(werte) / len(werte), 1) if werte else None,
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"count": len(werte),
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"mine": next(
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(s["stars"] for s in eigene if s["session_id"] == session_id),
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None,
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),
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}
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)
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return out
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def markieren(movie):
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"""Film als geschaut eintragen. Ein zweiter Klick ändert nichts."""
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with connect() as conn:
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conn.execute(
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"INSERT OR IGNORE INTO watched "
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"(movie_id, title, year, poster_path, watched_at) "
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"VALUES (?, ?, ?, ?, ?)",
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(
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movie["id"],
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movie["title"],
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movie.get("year"),
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movie.get("poster_path"),
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_jetzt(),
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),
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)
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row = conn.execute(
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"SELECT * FROM watched WHERE movie_id = ?", (movie["id"],)
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).fetchone()
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return dict(row)
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def entfernen(watched_id):
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with connect() as conn:
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conn.execute("DELETE FROM ratings WHERE watched_id = ?", (watched_id,))
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return conn.execute(
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"DELETE FROM watched WHERE id = ?", (watched_id,)
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).rowcount
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def datum_setzen(watched_id, tag):
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"""tag im Format JJJJ-MM-TT. Mittags in UTC, damit die Anzeige in
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keiner Zeitzone auf den Nachbartag rutscht."""
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with connect() as conn:
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return conn.execute(
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"UPDATE watched SET watched_at = ? WHERE id = ?",
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(f"{tag}T12:00:00+00:00", watched_id),
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).rowcount
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def sichtbarkeit(watched_id, versteckt):
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"""Versteckte Filme sieht nur der Host."""
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with connect() as conn:
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return conn.execute(
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"UPDATE watched SET hidden = ? WHERE id = ?",
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(1 if versteckt else 0, watched_id),
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).rowcount
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def bewerten(watched_id, session_id, stars, name=None):
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"""Gibt None zurück, wenn der Film gar nicht in der Liste steht."""
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with connect() as conn:
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da = conn.execute(
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"SELECT 1 FROM watched WHERE id = ?", (watched_id,)
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).fetchone()
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if not da:
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return None
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# Eine Stimme je Sitzung — eine neue Bewertung ersetzt die alte
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conn.execute(
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"INSERT INTO ratings "
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"(watched_id, session_id, stars, name, created_at) "
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"VALUES (?, ?, ?, ?, ?) "
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"ON CONFLICT (watched_id, session_id) DO UPDATE SET "
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"stars = excluded.stars, name = excluded.name, "
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"created_at = excluded.created_at",
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(
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watched_id,
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session_id,
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stars,
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(name or "").strip()[:40] or None,
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_jetzt(),
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),
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)
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return {"watched_id": watched_id, "stars": stars}
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def ids():
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"""movie_ids der geschauten Filme, für die Detailansicht."""
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with connect() as conn:
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return [r["movie_id"] for r in conn.execute("SELECT movie_id FROM watched")]
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