const net = require("net")
const MessageFactory = require("../Protocol/MessageFactory")
const { Crypto } = require("../Utils/Crypto")

class BrawlClient {
  constructor(config, logger) {
    this.config = config
    this.logger = logger
    this.socket = null
    this.connected = false

    this.crypto = new Crypto(config.crypto)
    this.messageFactory = new MessageFactory(config, this.crypto, logger)

    this.packetTypes = [10100, 10101, 20108, 0]
    this.currentPacketIndex = 0
    this.sequenceNumber = 0
    this.keepAliveCounter = 0

    this.reconnectAttempts = 0
    this.keepAliveInterval = null
  }

  connect() {
    this.logger.info(`🌐 Connecting to ${this.config.server.host}:${this.config.server.port}...`)

    this.socket = new net.Socket()
    this.socket.setTimeout(this.config.network.timeout)

    this.socket.connect(this.config.server.port, this.config.server.host, () => {
      this.logger.connection("connected", {
        host: this.config.server.host,
        port: this.config.server.port,
      })

      this.connected = true
      this.reconnectAttempts = 0
      this.startProtocolSequence()
    })

    this.socket.on("data", (data) => {
      this.handleServerData(data)
    })

    this.socket.on("close", () => {
      this.logger.connection("disconnected")
      this.connected = false
      this.stopKeepAlive()
      this.attemptReconnect()
    })

    this.socket.on("error", (err) => {
      this.logger.error("Connection error:", err.message)
      this.connected = false
      this.stopKeepAlive()
    })

    this.socket.on("timeout", () => {
      this.logger.warn("Connection timeout")
      this.socket.destroy()
    })
  }

  handleServerData(data) {
    try {
      let decryptedData = data
      if (this.config.crypto.enabled) {
        decryptedData = this.crypto.decrypt(data)
        this.logger.debug("🔓 Packet decrypted")
      }

      const message = this.messageFactory.parseMessage(decryptedData)

      switch (message.type) {
        case 20100:
          this.logger.success("🔐 Server Hello received")
          break
        case 20103:
          this.logger.success("✅ Login OK received")
          this.startKeepAlive()
          break
        case 20104:
          this.logger.error("❌ Login Failed received")
          break
        case 20108:
          this.logger.debug("💓 Keep Alive response received")
          break
        default:
          this.logger.info(`📦 Unknown packet type: ${message.type}`)
      }
    } catch (error) {
      this.logger.error("Error parsing server data:", error.message)
    }
  }

  sendMessage(type, data = null) {
    if (!this.connected) {
      this.logger.warn("❌ Not connected to server")
      return false
    }

    try {
      const message = this.messageFactory.createMessage(type, data)
      const payload = message.encode()
      const packet = this.messageFactory.createPacketHeader(type, payload)

      let finalPacket = packet
      if (this.config.crypto.enabled) {
        finalPacket = this.crypto.encrypt(packet)
        this.logger.debug("🔐 Packet encrypted")
      } else {
        this.logger.debug("📤 Packet sent without encryption")
      }

      this.socket.write(finalPacket)

      const typeName = this.getMessageTypeName(type)
      this.logger.success(`✅ ${typeName} sent successfully`)

      return true
    } catch (error) {
      this.logger.error(`💥 Error sending message ${type}:`, error.message)
      return false
    }
  }

  getMessageTypeName(type) {
    const names = {
      10100: "ClientHelloMessage",
      10101: "LoginMessage",
      20108: "KeepAliveMessage",
      0: "HeartbeatMessage",
    }
    return names[type] || `Unknown(${type})`
  }

  startProtocolSequence() {
    this.logger.info("🎯 Starting protocol sequence...")

    setTimeout(() => this.sendMessage(10100), 100)
    setTimeout(() => this.sendMessage(10101), 1000)
    setTimeout(() => this.sendMessage(0, { sequence: this.sequenceNumber++ }), 2000)
    setTimeout(() => {
      this.startPeriodicSending()
    }, 5000)
  }

  startPeriodicSending() {
    setInterval(() => {
      if (this.connected) {
        const packetType = this.packetTypes[this.currentPacketIndex]
        let data = null

        if (packetType === 0) {
          data = { sequence: this.sequenceNumber++ }
        } else if (packetType === 20108) {
          data = { counter: this.keepAliveCounter++ }
        }

        this.sendMessage(packetType, data)
        this.currentPacketIndex = (this.currentPacketIndex + 1) % this.packetTypes.length
      }
    }, this.config.network.keepAliveInterval)
  }

  startKeepAlive() {
    this.keepAliveInterval = setInterval(() => {
      if (this.connected) {
        this.sendMessage(20108, { counter: this.keepAliveCounter++ })
      }
    }, this.config.network.keepAliveInterval)
  }

  stopKeepAlive() {
    if (this.keepAliveInterval) {
      clearInterval(this.keepAliveInterval)
      this.keepAliveInterval = null
    }
  }

  attemptReconnect() {
    if (this.reconnectAttempts < this.config.network.reconnectAttempts) {
      this.reconnectAttempts++
      this.logger.info(
        `🔄 Attempting reconnection ${this.reconnectAttempts}/${this.config.network.reconnectAttempts}...`,
      )

      setTimeout(() => {
        this.connect()
      }, this.config.network.reconnectDelay)
    } else {
      this.logger.error("💀 Max reconnection attempts reached")
    }
  }

  disconnect() {
    this.logger.info("🔌 Disconnecting from server...")
    this.connected = false
    this.stopKeepAlive()

    if (this.socket) {
      this.socket.destroy()
      this.socket = null
    }
  }

  getStatus() {
    return {
      connected: this.connected,
      sequenceNumber: this.sequenceNumber,
      keepAliveCounter: this.keepAliveCounter,
      reconnectAttempts: this.reconnectAttempts,
    }
  }
}

module.exports = BrawlClient