import '../../programs/models/program.dart';
import '../../programs/models/step.dart';
import 'runner_interface.dart';

/// 串口运行器（真实硬件实现）
/// 实现与设备的串口通信
class SerialRunner implements Runner {
  @override
  RunnerStatus status = RunnerStatus.idle;

  /// 串口配置
  final String portName;
  final int baudRate;
  final int dataBits;
  final int stopBits;

  SerialRunner({
    this.portName = '/dev/ttyUSB0',
    this.baudRate = 9600,
    this.dataBits = 8,
    this.stopBits = 1,
  });

  @override
  void start(Program program, List<Step> steps, RunnerCallbacks callbacks) {
    // TODO: 实现串口通信启动逻辑
    // 1. 打开串口连接
    // 2. 发送程序配置
    // 3. 按步骤发送控制指令
    // 4. 接收设备反馈并更新状态

    status = RunnerStatus.running;

    // 示例：发送启动指令
    // _sendCommand('START', program.code);

    // 示例：监听设备状态
    // _listenToDevice(callbacks);
  }

  @override
  void pause() {
    if (status == RunnerStatus.running) {
      // _sendCommand('PAUSE');
      status = RunnerStatus.paused;
    }
  }

  @override
  void resume() {
    if (status == RunnerStatus.paused) {
      // _sendCommand('RESUME');
      status = RunnerStatus.running;
    }
  }

  @override
  void stop() {
    // _sendCommand('STOP');
    // _closeConnection();
    status = RunnerStatus.idle;
  }

  @override
  RunnerStatus getStatus() => status;

  @override
  void dispose() {
    stop();
  }

  /// 发送控制指令（待硬件协议确定后实现）
  Future<void> _sendCommand(String command, [String? data]) async {
    // TODO: 根据硬件通信协议实现
    // 示例协议格式: [CMD:data] 或 二进制协议
  }

  /// 监听设备反馈（待硬件协议确定后实现）
  void _listenToDevice(RunnerCallbacks callbacks) {
    // TODO: 解析设备返回的状态数据
    // 状态格式示例: [STEP:1,TIME:60,POS:A1]
  }

  /// 执行单个步骤
  Future<void> _executeStep(Step step) async {
    // TODO: 根据步骤参数生成控制指令
    // 混合: MIX(position, time, speed)
    // 吸磁: MAGNET(position, time)
    // 吹气: BLOW(position, speed, time)
  }
}