Files
mcma-backend/app/infrastructure/db/models/play_history.py
T
Цвылев Александр Вадимович 048854f92a feat(api): offline-first sync layer
Implements the stubbed /sync endpoints:
- GET /sync/changes — delta pull (likes, plays, changed playlists with
  their track ids, changed catalogue tracks) over the half-open window
  (since, cursor]; the cursor is the DB clock, so it's immune to app/DB
  skew.
- POST /sync/push — idempotent append of client like/play events
  (ON CONFLICT DO NOTHING by client-supplied id); events for tracks the
  server doesn't have are skipped (graceful degradation).

Adds a server-ingestion column `synced_at` to the likes + play_history
event logs (migration) as the delta ordering key, so an event pushed
with an older event time still surfaces for other devices. Repos gain
list_since/add_event (likes, history), list_changed_since (playlists,
tracks) and playlist.track_ids; wired via SyncService in deps.

Also fixes test isolation exposed by the registry-backed /admin/sources
endpoint: test_sources_api clears the process-cached source registry,
and test_admin_api no longer hardcodes the environment name.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-07-28 15:04:13 +03:00

45 lines
1.6 KiB
Python

"""ORM model for play history — an append-only event log (scrobbles).
``play_duration_seconds`` (how long was actually listened) feeds skip-rate for
future ML; ``completed`` marks a full play (plan §4).
"""
import datetime as dt
import uuid
from sqlalchemy import Boolean, DateTime, ForeignKey, Index, Integer, func
from sqlalchemy.orm import Mapped, mapped_column
from app.infrastructure.db.base import Base
from app.infrastructure.db.models.mixins import UUIDPrimaryKeyMixin
class PlayHistoryModel(UUIDPrimaryKeyMixin, Base):
__tablename__ = "play_history"
__table_args__ = (Index("ix_play_history_user_id_played_at", "user_id", "played_at"),)
user_id: Mapped[uuid.UUID] = mapped_column(
ForeignKey("users.id", ondelete="CASCADE"),
nullable=False,
)
track_id: Mapped[uuid.UUID] = mapped_column(
ForeignKey("tracks.id", ondelete="CASCADE"),
index=True,
nullable=False,
)
played_at: Mapped[dt.datetime] = mapped_column(
DateTime(timezone=True),
server_default=func.now(),
nullable=False,
)
play_duration_seconds: Mapped[int | None] = mapped_column(Integer, nullable=True)
completed: Mapped[bool] = mapped_column(Boolean, nullable=False, default=False)
# Server ingestion time — the delta-sync ordering key (see LikeModel). Distinct
# from ``played_at`` (the real play time), which a sync push preserves.
synced_at: Mapped[dt.datetime] = mapped_column(
DateTime(timezone=True),
server_default=func.now(),
nullable=False,
index=True,
)