import * as Sequelize from 'sequelize'

async function up (utils: {
  transaction: Sequelize.Transaction
  queryInterface: Sequelize.QueryInterface
  sequelize: Sequelize.Sequelize
  db: any
}): Promise<void> {

  // Torrent and file URLs
  {
    const fromQueryWebtorrent = `SELECT 'https://' || server.host AS "serverUrl", '/static/webseed/' AS "filePath", "videoFile".id ` +
      `FROM video ` +
      `INNER JOIN "videoChannel" ON "videoChannel".id = video."channelId" ` +
      `INNER JOIN actor ON actor.id = "videoChannel"."actorId" ` +
      `INNER JOIN server ON server.id = actor."serverId" ` +
      `INNER JOIN "videoFile" ON "videoFile"."videoId" = video.id ` +
      `WHERE video.remote IS TRUE`

    const fromQueryHLS = `SELECT 'https://' || server.host AS "serverUrl", ` +
      `'/static/streaming-playlists/hls/' || video.uuid || '/' AS "filePath", "videoFile".id ` +
      `FROM video ` +
      `INNER JOIN "videoChannel" ON "videoChannel".id = video."channelId" ` +
      `INNER JOIN actor ON actor.id = "videoChannel"."actorId" ` +
      `INNER JOIN server ON server.id = actor."serverId" ` +
      `INNER JOIN "videoStreamingPlaylist" ON "videoStreamingPlaylist"."videoId" = video.id ` +
      `INNER JOIN "videoFile" ON "videoFile"."videoStreamingPlaylistId" = "videoStreamingPlaylist".id ` +
      `WHERE video.remote IS TRUE`

    for (const fromQuery of [ fromQueryWebtorrent, fromQueryHLS ]) {
      const query = `UPDATE "videoFile" ` +
        `SET "torrentUrl" = t."serverUrl" || '/static/torrents/' || "videoFile"."torrentFilename", ` +
        `"fileUrl" = t."serverUrl" || t."filePath" || "videoFile"."filename" ` +
        `FROM (${fromQuery}) AS t WHERE t.id = "videoFile"."id" AND "videoFile"."fileUrl" IS NULL`

      await utils.sequelize.query(query)
    }
  }

  // Caption URLs
  {
    const fromQuery = `SELECT 'https://' || server.host AS "serverUrl", "video".uuid, "videoCaption".id ` +
      `FROM video ` +
      `INNER JOIN "videoChannel" ON "videoChannel".id = video."channelId" ` +
      `INNER JOIN actor ON actor.id = "videoChannel"."actorId" ` +
      `INNER JOIN server ON server.id = actor."serverId" ` +
      `INNER JOIN "videoCaption" ON "videoCaption"."videoId" = video.id ` +
      `WHERE video.remote IS TRUE`

    const query = `UPDATE "videoCaption" ` +
      `SET "fileUrl" = t."serverUrl" || '/lazy-static/video-captions/' || t.uuid || '-' || "videoCaption"."language" || '.vtt' ` +
      `FROM (${fromQuery}) AS t WHERE t.id = "videoCaption"."id" AND "videoCaption"."fileUrl" IS NULL`

    await utils.sequelize.query(query)
  }

  // Thumbnail URLs
  {
    const fromQuery = `SELECT 'https://' || server.host AS "serverUrl", "video".uuid, "thumbnail".id ` +
      `FROM video ` +
      `INNER JOIN "videoChannel" ON "videoChannel".id = video."channelId" ` +
      `INNER JOIN actor ON actor.id = "videoChannel"."actorId" ` +
      `INNER JOIN server ON server.id = actor."serverId" ` +
      `INNER JOIN "thumbnail" ON "thumbnail"."videoId" = video.id ` +
      `WHERE video.remote IS TRUE`

    // Thumbnails
    {
      const query = `UPDATE "thumbnail" ` +
        `SET "fileUrl" = t."serverUrl" || '/static/thumbnails/' || t.uuid || '.jpg' ` +
        `FROM (${fromQuery}) AS t WHERE t.id = "thumbnail"."id" AND "thumbnail"."fileUrl" IS NULL AND thumbnail.type = 1`

      await utils.sequelize.query(query)
    }

    {
      // Previews
      const query = `UPDATE "thumbnail" ` +
        `SET "fileUrl" = t."serverUrl" || '/lazy-static/previews/' || t.uuid || '.jpg' ` +
        `FROM (${fromQuery}) AS t WHERE t.id = "thumbnail"."id" AND "thumbnail"."fileUrl" IS NULL AND thumbnail.type = 2`

      await utils.sequelize.query(query)
    }
  }

  // Trackers
  {
    const trackerUrls = [
      `'https://' || server.host  || '/tracker/announce'`,
      `'wss://' || server.host  || '/tracker/socket'`
    ]

    for (const trackerUrl of trackerUrls) {
      {
        const query = `INSERT INTO "tracker" ("url", "createdAt", "updatedAt") ` +
          `SELECT ${trackerUrl} AS "url", NOW(), NOW() ` +
          `FROM video ` +
          `INNER JOIN "videoChannel" ON "videoChannel".id = video."channelId" ` +
          `INNER JOIN actor ON actor.id = "videoChannel"."actorId" ` +
          `INNER JOIN server ON server.id = actor."serverId" ` +
          `WHERE video.remote IS TRUE ` +
          `ON CONFLICT DO NOTHING`

        await utils.sequelize.query(query)
      }

      {
        const query = `INSERT INTO "videoTracker" ("videoId", "trackerId", "createdAt", "updatedAt") ` +
          `SELECT video.id, (SELECT tracker.id FROM tracker WHERE url = ${trackerUrl}) AS "trackerId", NOW(), NOW()` +
          `FROM video ` +
          `INNER JOIN "videoChannel" ON "videoChannel".id = video."channelId" ` +
          `INNER JOIN actor ON actor.id = "videoChannel"."actorId" ` +
          `INNER JOIN server ON server.id = actor."serverId" ` +
          `WHERE video.remote IS TRUE`

        await utils.sequelize.query(query)
      }
    }
  }

}

function down (options) {
  throw new Error('Not implemented.')
}

export {
  up,
  down
}