'use strict';

const Transmission = require('transmission-promise');
const conf = require('>/conf');

const tr_client = new Transmission(conf.transmission)

const statusMap = [
  'STOPPED', // 0
  'CHECK_WAIT', // 1  
  'CHECK', // 2
  'DOWNLOAD_WAIT', // 3 
  'DOWNLOAD', // 4     
  'SEED_WAIT', // 5 
  'SEED', // 6   
  'ISOLATED', // 7  
];

module.exports = (sequelize, DataTypes, Model) => {
  class Torrent extends Model {
    /**
     * Helper method for defining associations.
     * This method is not a part of Sequelize lifecycle.
     * The `models/index` file will call this method automatically.
     */
    static associate(models) {
      // define association here
    }

    static trClient = tr_client;

    static async create(data, ...args){
      try{

        // let instance = this.build(data);
        // console.log('instance', instance)
        await this.build(data).validate();
        // console.log('validate', val);

        let res = await tr_client.addUrl(data.magnetLink);

        return await super.create({
          magnetLink: data.magnetLink,
          hashString: res.hashString,
          name: res.name,
          added_by: data.added_by,
          status: 0,
          percentDone: 0,
        }, args);
      }catch (error){
        console.log('Torrent create error', error);
        throw error;
      }
    }

    static async migrate(hashString, username){
      try{
        let exists = await this.findByPk(hashString);

        if(exists){
          console.log('torrent in DB, skipping')
          return {}
        }

        let res = ( await tr_client.get(hashString, [
        "eta", "percentDone", "status", "rateDownload",
          "errorString", "hashString", 'name',
          'downloadDir',
          'addedDate',
          'magnetLink',
          'files', //array of files
          'filesStats', // array of files with status
          'isFinished',
          'isStalled',
          'peers',
          'peersConnected', // array of peers,
          'sizeWhenDone',
        ]) ).torrents[0];

        // console.log('date:', res.addedDate, new Date(res.addedDate*1000), 'res:', res)

        let instance = await this.build({createdAt: new Date(res.addedDate*1000),  ...res, added_by: username});
        await instance.save();
        return {...res, ...instance.dataValues};
      }catch(error){
        console.error('migrate error', error);
      }
    }

    async getTorrentData(noUpdate){
      try{

        if(this.percentDone === 1) return this.dataValues

        let res = ( await tr_client.get(this.hashString, [
          "eta", "percentDone", "status", "rateDownload",
          "errorString", "hashString", 'name',
          'downloadDir',
          'dateCreated',
          'files', //array of files
          'filesStats', // array of files with status
          'isFinished',
          'isStalled',
          'peers',
          'peersConnected', // array of peers,
          'sizeWhenDone',
        ]) ).torrents[0];

        await this.update(res);
        if(noUpdate) await this.save();
        
        return {...res, ...this.dataValues};
      }catch(error){
        if(error.code === 'ECONNREFUSED'){
          let e = new Error('TorrentGatewayDown')
          e.status = 555
          throw e
        }
        // console.error(`Torrent ${this.hashString} getTorrentData error`, error);
        throw error;
      }
    }

    async stop(){
      return await this.constructor.trClient.stop(this.hashString);
    }

    async start(force){
      if(force) return await this.constructor.trClient.startNow(this.hashString);
      let res = await this.constructor.trClient.start(this.hashString);
      console.log('start', res);
      return res;
    }

    async destroy(){
      await await this.constructor.trClient.remove(this.hashString, true);
      return await super.destroy()
    }
  }
  Torrent.init({
    hashString: {
      type: DataTypes.STRING,
      allowNull: false,
      primaryKey: true
    },
    magnetLink: {
      type: DataTypes.STRING,
      allowNull: false,
      validate:{
        notNull: true,
        notEmpty: true,
      },
    },
    isPrivate: {
      type: DataTypes.BOOLEAN,
      defaultValue: false,
    },
    name: DataTypes.STRING,
    added_by: {
      type: DataTypes.STRING,
      ldapModel: 'User',
      allowNull: false,
      validate:{
        notNull: true,
        notEmpty: true,
      },
    },
    status: DataTypes.NUMBER,
    percentDone: DataTypes.FLOAT,
    downloadDir: {
      type: DataTypes.STRING,
      allowNull: true,
    },
    errorString: {
      type: DataTypes.STRING,
      allowNull: true,
    },
    sizeWhenDone: {
      type: DataTypes.NUMBER,
      allowNull: true,
    },
    createdAt: {
      type: DataTypes.DATE
    },
  }, {
    sequelize,
    modelName: 'Torrent',
    logging: false,
  });
  return Torrent;
};