import 'dart:async';

import 'package:flutter/services.dart';

typedef Future<dynamic> EventHandler(Map<String, dynamic> event);

class IflytekSpeechDemo {
  static const MethodChannel _channel = MethodChannel('iflytek_speech_demo');

  late EventHandler _onReceiveSpeechText;

  // test方法
  static Future<String?> get platformVersion async {
    final String? version = await _channel.invokeMethod('getPlatformVersion');
    return version;
  }
  // 编写自定义异步方法，调用原生sdk传递过来的数据
  // 1. 初始化方法
  Future<int> init(String appId) async {
    try{
      int ret = await _channel.invokeMethod('init', {
        "appID": appId
      });
      if(ret == 0) {
        _channel.setMethodCallHandler(_handleMethod);
      }
      return ret;
    }catch(e) {
      print(e);
      return 9999999;
    }
  }

  Future<Future> _handleMethod(MethodCall call) async {
    print("speech_handleMethod:");

    switch (call.method) {
      case "onReceiveSpeechText":
        return _onReceiveSpeechText(call.arguments.cast<String, dynamic>());
      default:
        throw UnsupportedError("Unrecognized Event:"+call.method);
    }
  }

  Future<String> wakeupStart(EventHandler onReceiveSpeechText) async {
    _onReceiveSpeechText = onReceiveSpeechText;
    try{
      return await _channel.invokeMethod('wakeupStart');
    }catch(e) {
      print(e);
      return "9999999";
    }
  }

  Future<String> wakeupStop() async {
    return await _channel.invokeMethod('wakeupStop');
  }

  Future<String> wakeupCancel() async {
    return await _channel.invokeMethod('wakeupCancel');
  }

  Future<int> ttsStart(String ttsText) async {
    try{
      int ret = await _channel.invokeMethod('ttsStart', {
        "ttsText": ttsText
      });
      return ret;
    }catch(e) {
      print(e);
      return 9999999;
    }
  }
  Future<String> ttsCancel() async {
    return await _channel.invokeMethod('ttsCancel');
  }

  Future<String> ttsPause() async {
    return await _channel.invokeMethod('ttsPause');
  }

  Future<String> ttsResume() async {
    return await _channel.invokeMethod('ttsResume');
  }

}