goon/app/api/me.py
goon-foss 2cfb0bc12d
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feat(sync): device-to-device backup of favorites & state
No-accounts app, so favorites/saved-searches/hidden-list/watch-progress live
per-device (keyed by X-Device-Id). Users asked how to move them to a new phone.

Backend: POST /me/import/{source_device} copies all device-scoped tables from a
source device to the caller (dedup via NOT EXISTS, new UUIDs for id-PK tables like
saved_searches). Copy not move, so the old phone keeps everything; idempotent. The
device_id is a random UUID so knowing it is the authorization (fine for a keyless app).

Mobile: Settings -> "Backup & sync" shows this device's sync code (copy button) and a
Restore field to paste the other device's code; invalidates favorites queries after.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-07-14 22:41:35 +03:00

122 lines
4.9 KiB
Python

"""Per-device self-service: przejęcie legacy stanu usera.
Po migracji device-scopingu (0022) stare wiersze mają `device_id='legacy-shared'`.
`POST /me/adopt-legacy` przepina WSZYSTKIE legacy wiersze (favorites/progress/blacklisty)
na device wołającego. Robi to JEDEN raz właściciel instancji po update apki — kolejne
wywołania nic nie znajdą (legacy już puste). Jeśli na keep-device istnieje już wiersz
dla tej samej encji, legacy duplikat jest pomijany (ON CONFLICT DO NOTHING → potem
kasujemy resztki legacy).
"""
from __future__ import annotations
from typing import Annotated
from fastapi import APIRouter, Depends
from pydantic import BaseModel
from sqlalchemy import text
from sqlalchemy.orm import Session
from app.api.device import LEGACY_DEVICE, get_device_id
from app.auth import require_api_key
from app.db import get_session
router = APIRouter(prefix="/me", tags=["me"], dependencies=[Depends(require_api_key)])
# (tabela, kolumna-encji) — wszystkie tabele device-scoped (migracja 0022).
_TABLES: list[tuple[str, str]] = [
("favorite_performers", "performer_id"),
("favorite_studios", "studio_id"),
("favorite_scenes", "scene_id"),
("favorite_movies", "movie_id"),
("scene_play_progress", "scene_id"),
("movie_play_progress", "movie_id"),
("blacklisted_performers", "performer_id"),
("blacklisted_studios", "studio_id"),
("blacklisted_tags", "tag_id"),
]
class AdoptLegacyOut(BaseModel):
device_id: str
moved: dict[str, int]
class ImportOut(BaseModel):
device_id: str
imported: dict[str, int]
# Tabele do przeniesienia przy transferze między urządzeniami + kolumna-encji do dedupu.
# saved_searches ma własne `id` PK (nie (device_id,encja)), więc dedup po `query`.
_COPY_TABLES: list[tuple[str, str]] = _TABLES + [("saved_searches", "query")]
@router.post("/import/{source_device}", response_model=ImportOut)
def import_from_device(
source_device: str,
session: Annotated[Session, Depends(get_session)],
device_id: Annotated[str, Depends(get_device_id)],
) -> ImportOut:
"""Backup/transfer stanu (ulubione/blacklisty/progres/zapisane wyszukiwania) z innego
urządzenia na wołające. `source_device` to device_id starego telefonu (pełni rolę kodu
transferu — jest losowym UUID, więc jego znajomość == autoryzacja; instancja bez kont).
KOPIUJE (nie przenosi): stary telefon zachowuje swoje. Dedup: pomija encje które
urządzenie już ma. Idempotentne. `id`-PK (saved_searches) dostaje nowy gen_random_uuid()."""
imported: dict[str, int] = {}
source = (source_device or "").strip()[:64]
if not source or source == device_id or source == LEGACY_DEVICE:
return ImportOut(device_id=device_id, imported={})
for table, dedup_col in _COPY_TABLES:
cols = [
r[0]
for r in session.execute(
text(
"SELECT column_name FROM information_schema.columns "
"WHERE table_name = :t ORDER BY ordinal_position"
).bindparams(t=table)
).all()
]
if not cols:
continue
select_exprs = ", ".join(
":dev" if c == "device_id" else ("gen_random_uuid()" if c == "id" else f"src.{c}")
for c in cols
)
sql = (
f"INSERT INTO {table} ({', '.join(cols)}) "
f"SELECT {select_exprs} FROM {table} src "
f"WHERE src.device_id = :src AND NOT EXISTS ("
f" SELECT 1 FROM {table} t WHERE t.device_id = :dev AND t.{dedup_col} = src.{dedup_col})"
)
res = session.execute(text(sql).bindparams(dev=device_id, src=source))
imported[table] = res.rowcount or 0
session.commit()
return ImportOut(device_id=device_id, imported=imported)
@router.post("/adopt-legacy", response_model=AdoptLegacyOut)
def adopt_legacy(
session: Annotated[Session, Depends(get_session)],
device_id: Annotated[str, Depends(get_device_id)],
) -> AdoptLegacyOut:
moved: dict[str, int] = {}
if device_id == LEGACY_DEVICE:
# Wołający bez X-Device-Id == legacy → nie ma czego przepinać.
return AdoptLegacyOut(device_id=device_id, moved={})
for table, entity in _TABLES:
# Przepnij legacy → device dla encji których device JESZCZE nie ma.
res = session.execute(
text(
f"UPDATE {table} SET device_id = :dev "
f"WHERE device_id = :legacy AND {entity} NOT IN "
f"(SELECT {entity} FROM {table} WHERE device_id = :dev)"
).bindparams(dev=device_id, legacy=LEGACY_DEVICE)
)
moved[table] = res.rowcount or 0
# Resztki legacy (encje które device już miał) — skasuj, żeby nie wisiały.
session.execute(
text(f"DELETE FROM {table} WHERE device_id = :legacy").bindparams(legacy=LEGACY_DEVICE)
)
session.commit()
return AdoptLegacyOut(device_id=device_id, moved=moved)