const ByteStream = require("../../ByteStream/ByteStream")

class LoginMessage {
  constructor(config, crypto, logger, data = null) {
    this.config = config
    this.crypto = crypto
    this.logger = logger
    this.type = 10101
    this.data = data
  }

  encode() {
    const stream = new ByteStream()

    stream.writeUInt32(0)

    
    const playerId = Math.floor(Math.random() * 1000000)
    stream.writeUInt32(playerId)

    const token = this.config.auth.token || ""
    stream.writeString(token)

    stream.writeUInt32(this.config.client.version.major)

    stream.writeUInt32(this.config.client.version.minor)

    stream.writeUInt32(this.config.client.version.build)

    stream.writeString("")

    stream.writeString(this.config.client.device)

    stream.writeString(this.config.client.language)

    this.logger.debug(`Encoding LoginMessage`, {
      playerId: playerId,
      device: this.config.client.device,
      language: this.config.client.language,
      hasToken: token.length > 0,
      cryptoEnabled: this.config.crypto.enabled,
    })

    return stream.getBuffer()
  }

  decode(buffer) {
    const stream = new ByteStream(buffer)

    const data = {
      highId: stream.readUInt32(),
      lowId: stream.readUInt32(),
      token: stream.readString(),
      majorVersion: stream.readUInt32(),
      minorVersion: stream.readUInt32(),
      buildVersion: stream.readUInt32(),
      hash: stream.readString(),
      device: stream.readString(),
      language: stream.readString(),
    }

    this.logger.debug(`Decoded LoginMessage`, data)
    return data
  }

  getType() {
    return this.type
  }
}

module.exports = LoginMessage