const Path = require('path')
const { Sequelize } = require('sequelize')

const Logger = require('./Logger')

class Database {
  constructor() {
    this.sequelize = null
  }

  get models() {
    return this.sequelize?.models || {}
  }

  async init(force = false) {
    if (!await this.connect()) {
      throw new Error('Database connection failed')
    }

    await this.buildModels(force)
    Logger.info(`[Database] Db initialized`, Object.keys(this.sequelize.models))
  }

  async connect() {
    const dbPath = Path.join(global.ConfigPath, 'database.sqlite')
    Logger.info(`[Database] Initializing db at "${dbPath}"`)
    this.sequelize = new Sequelize({
      dialect: 'sqlite',
      storage: dbPath,
      logging: false
    })

    // Helper function
    this.sequelize.uppercaseFirst = str => str ? `${str[0].toUpperCase()}${str.substr(1)}` : ''

    try {
      await this.sequelize.authenticate()
      Logger.info(`[Database] Db connection was successful`)
      return true
    } catch (error) {
      Logger.error(`[Database] Failed to connect to db`, error)
      return false
    }
  }

  buildModels(force = false) {
    require('./models/User')(this.sequelize)
    require('./models/FileMetadata')(this.sequelize)
    require('./models/EBookFile')(this.sequelize)
    require('./models/Book')(this.sequelize)
    require('./models/Podcast')(this.sequelize)
    require('./models/Library')(this.sequelize)
    require('./models/LibraryFolder')(this.sequelize)
    require('./models/LibraryItem')(this.sequelize)
    require('./models/PodcastEpisode')(this.sequelize)
    require('./models/MediaProgress')(this.sequelize)
    require('./models/LibraryFile')(this.sequelize)
    require('./models/Person')(this.sequelize)
    require('./models/AudioBookmark')(this.sequelize)
    require('./models/MediaFile')(this.sequelize)
    require('./models/MediaStream')(this.sequelize)
    require('./models/AudioTrack')(this.sequelize)
    require('./models/BookAuthor')(this.sequelize)
    require('./models/BookChapter')(this.sequelize)
    require('./models/Genre')(this.sequelize)
    require('./models/BookGenre')(this.sequelize)
    require('./models/PodcastGenre')(this.sequelize)
    require('./models/BookNarrator')(this.sequelize)
    require('./models/Series')(this.sequelize)
    require('./models/BookSeries')(this.sequelize)
    require('./models/Tag')(this.sequelize)
    require('./models/BookTag')(this.sequelize)
    require('./models/PodcastTag')(this.sequelize)
    require('./models/Collection')(this.sequelize)
    require('./models/CollectionBook')(this.sequelize)
    require('./models/Playlist')(this.sequelize)
    require('./models/PlaylistMediaItem')(this.sequelize)
    require('./models/Device')(this.sequelize)
    require('./models/PlaybackSession')(this.sequelize)
    require('./models/PlaybackSessionListenTime')(this.sequelize)
    require('./models/Feed')(this.sequelize)
    require('./models/FeedEpisode')(this.sequelize)
    require('./models/Setting')(this.sequelize)
    require('./models/LibrarySetting')(this.sequelize)
    require('./models/Notification')(this.sequelize)
    require('./models/UserPermission')(this.sequelize)

    return this.sequelize.sync({ force })
  }
}


module.exports = new Database()