import { join } from 'node:path'
import { readFileSync, existsSync } from 'node:fs'
import { getDb } from './db.js'
import { sanitizeStreamUrl } from './feedUtils.js'

/**
 * One-time migration: insert entries from server/data/feeds.json into devices (device_type = 'feed').
 * No-op if devices table already has rows or feeds file is missing.
 */
export async function migrateFeedsToDevices() {
  const db = await getDb()
  const row = await db.get('SELECT COUNT(*) as n FROM devices')
  if (row?.n > 0) return
  const path = join(process.cwd(), 'server/data/feeds.json')
  if (!existsSync(path)) return
  const data = JSON.parse(readFileSync(path, 'utf8'))
  const list = Array.isArray(data) ? data : []
  for (const feed of list) {
    if (!feed?.id || typeof feed.name !== 'string' || typeof feed.lat !== 'number' || typeof feed.lng !== 'number') continue
    const streamUrl = sanitizeStreamUrl(feed.streamUrl) ?? ''
    const sourceType = feed.sourceType === 'hls' ? 'hls' : 'mjpeg'
    await db.run(
      'INSERT OR IGNORE INTO devices (id, name, device_type, vendor, lat, lng, stream_url, source_type, config) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)',
      [feed.id, feed.name, 'feed', null, feed.lat, feed.lng, streamUrl, sourceType, null],
    )
  }
}