107 lines
3.8 KiB
Python
107 lines
3.8 KiB
Python
import sqlite3
|
|
import threading
|
|
from datetime import datetime, timezone
|
|
|
|
|
|
class SyncState:
|
|
def __init__(self, db_path="./sync.db"):
|
|
self.db_path = db_path
|
|
self._lock = threading.Lock()
|
|
self._conn = sqlite3.connect(db_path, timeout=30)
|
|
self._conn.execute("PRAGMA journal_mode=WAL")
|
|
self._conn.execute("""
|
|
CREATE TABLE IF NOT EXISTS events (
|
|
uid TEXT PRIMARY KEY,
|
|
content_hash TEXT NOT NULL,
|
|
synced_at TIMESTAMP NOT NULL
|
|
)
|
|
""")
|
|
self._conn.execute("""
|
|
CREATE TABLE IF NOT EXISTS ics_cache (
|
|
id INTEGER PRIMARY KEY CHECK(id=1),
|
|
ics_hash TEXT,
|
|
etag TEXT,
|
|
fetched_at TIMESTAMP
|
|
)
|
|
""")
|
|
self._conn.commit()
|
|
return self
|
|
|
|
def get_event_uids(self) -> set[str]:
|
|
with self._lock:
|
|
cur = self._conn.execute("SELECT uid FROM events")
|
|
return {row[0] for row in cur.fetchall()}
|
|
|
|
def get_event_hash(self, uid: str) -> str | None:
|
|
with self._lock:
|
|
cur = self._conn.execute("SELECT content_hash FROM events WHERE uid = ?", (uid,))
|
|
row = cur.fetchone()
|
|
return row[0] if row else None
|
|
|
|
def upsert_event(self, uid: str, content_hash: str) -> None:
|
|
with self._lock:
|
|
self._conn.execute("""
|
|
INSERT OR REPLACE INTO events (uid, content_hash, synced_at)
|
|
VALUES (?, ?, ?)
|
|
""", (uid, content_hash, datetime.now(timezone.utc).isoformat()))
|
|
self._conn.commit()
|
|
|
|
def delete_event(self, uid: str) -> None:
|
|
with self._lock:
|
|
self._conn.execute("DELETE FROM events WHERE uid = ?", (uid,))
|
|
self._conn.commit()
|
|
|
|
def clear_events(self) -> int:
|
|
with self._lock:
|
|
cur = self._conn.execute("SELECT COUNT(*) FROM events")
|
|
count = cur.fetchone()[0]
|
|
self._conn.execute("DELETE FROM events")
|
|
self._conn.commit()
|
|
return count
|
|
|
|
def get_ics_cache(self) -> tuple[str | None, str | None, str | None]:
|
|
with self._lock:
|
|
cur = self._conn.execute("SELECT ics_hash, etag, fetched_at FROM ics_cache WHERE id = 1")
|
|
row = cur.fetchone()
|
|
if row:
|
|
return (row[0], row[1], row[2])
|
|
return (None, None, None)
|
|
|
|
def set_ics_cache(self, ics_hash: str, etag: str | None) -> None:
|
|
with self._lock:
|
|
self._conn.execute("""
|
|
INSERT INTO ics_cache (id, ics_hash, etag, fetched_at)
|
|
VALUES (1, ?, ?, ?)
|
|
ON CONFLICT(id) DO UPDATE SET ics_hash = ?, etag = ?, fetched_at = ?
|
|
""", (ics_hash, etag, datetime.now(timezone.utc).isoformat(),
|
|
ics_hash, etag, datetime.now(timezone.utc).isoformat()))
|
|
self._conn.commit()
|
|
|
|
def clear_ics_cache(self) -> None:
|
|
with self._lock:
|
|
self._conn.execute("DELETE FROM ics_cache")
|
|
self._conn.commit()
|
|
|
|
def snapshot(self) -> dict:
|
|
with self._lock:
|
|
cur = self._conn.execute("SELECT uid, content_hash FROM events")
|
|
rows = cur.fetchall()
|
|
return {
|
|
"uids": [r[0] for r in rows],
|
|
"hashes": {r[0]: r[1] for r in rows}
|
|
}
|
|
|
|
def restore_snapshot(self, data: dict) -> None:
|
|
with self._lock:
|
|
self._conn.execute("DELETE FROM events")
|
|
for uid, content_hash in data.get("hashes", {}).items():
|
|
self._conn.execute("""
|
|
INSERT INTO events (uid, content_hash, synced_at)
|
|
VALUES (?, ?, ?)
|
|
""", (uid, content_hash, datetime.now(timezone.utc).isoformat()))
|
|
self._conn.commit()
|
|
|
|
def close(self) -> None:
|
|
with self._lock:
|
|
self._conn.close()
|