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Phase 2 migration: convert existing assignments to per-device playlists

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Runs once at startup. For each device with assignments, creates an
auto-generated playlist (is_auto_generated=1) containing those items
and sets device.playlist_id. Skips if any device already has a playlist.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
ScreenTinker 2026-04-11 22:03:41 -05:00
parent 2af3cec8a6
commit c8dffab5ad
1 changed files with 56 additions and 0 deletions
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56
server/db/database.js
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@ -95,6 +95,62 @@ try {
console.error('Assignments migration error:', e.message);
}
// Phase 2 migration: convert existing assignments into per-device playlists
function migrateAssignmentsToPlaylists() {
// Skip if already migrated (any device has a playlist_id set)
const migrated = db.prepare('SELECT 1 FROM devices WHERE playlist_id IS NOT NULL LIMIT 1').get();
if (migrated) return;
const { v4: uuidv4 } = require('uuid');
// Find devices that have at least one assignment
const devicesWithAssignments = db.prepare(`
SELECT DISTINCT d.id, d.name, d.user_id
FROM devices d
INNER JOIN assignments a ON a.device_id = d.id
WHERE d.user_id IS NOT NULL
`).all();
if (devicesWithAssignments.length === 0) return;
console.log(`Migrating ${devicesWithAssignments.length} device(s) from assignments to playlists...`);
const insertPlaylist = db.prepare(`
INSERT INTO playlists (id, user_id, name, description, is_auto_generated)
VALUES (?, ?, ?, ?, 1)
`);
const insertItem = db.prepare(`
INSERT INTO playlist_items (playlist_id, content_id, widget_id, sort_order, duration_sec)
VALUES (?, ?, ?, ?, ?)
`);
const setDevicePlaylist = db.prepare('UPDATE devices SET playlist_id = ? WHERE id = ?');
const getAssignments = db.prepare(`
SELECT content_id, widget_id, sort_order, duration_sec
FROM assignments
WHERE device_id = ? AND enabled = 1
ORDER BY sort_order ASC
`);
const migrate = db.transaction(() => {
for (const device of devicesWithAssignments) {
const playlistId = uuidv4();
insertPlaylist.run(playlistId, device.user_id, `${device.name} (migrated)`, 'Auto-generated from previous assignments');
const assignments = getAssignments.all(device.id);
for (const a of assignments) {
insertItem.run(playlistId, a.content_id || null, a.widget_id || null, a.sort_order, a.duration_sec);
}
setDevicePlaylist.run(playlistId, device.id);
}
});
migrate();
console.log(`Migration complete: ${devicesWithAssignments.length} playlist(s) created.`);
}
migrateAssignmentsToPlaylists();
// Prune old telemetry (keep last 24h worth at 15s intervals = ~5760, cap at 6000)
function pruneTelemetry(deviceId) {
db.prepare(`