import 'dart:io';

import 'package:file_picker/file_picker.dart';
import 'package:flutter/material.dart';
import 'package:flutter_easyloading/flutter_easyloading.dart';
import 'package:get/get.dart';
import 'package:just_audio/just_audio.dart';
import 'package:path_provider/path_provider.dart';
import 'package:permission_handler/permission_handler.dart';

import '../../../core/utils/upload_oss.dart';
import '../../../data/services/db/sqflite_api.dart';

class MeetingController extends GetxController {
  final ScrollController listController = ScrollController();
  final AudioPlayer _audioPlayer = AudioPlayer();

  // 是否还有更多数据
  bool isLoadingMore = true;
  int page = 1;

  TextEditingController titleController = TextEditingController(); // 录音标题

  RxList dataList = [].obs;

  @override
  void onInit() {
    super.onInit();
    listController.addListener(_onScroll);
    Permission.storage.request();
    _getDataList();
  }

  @override
  void onClose() {
    listController.dispose();
    titleController.dispose();
    _audioPlayer.dispose();
    super.onClose();
  }

  void _onScroll() {
    if (isLoadingMore &&
        listController.position.pixels >=
            listController.position.maxScrollExtent - 100) {
      page++;
      _getDataList();
    }
  }

  // 请求本地数据
  void _getDataList() async {
    List list = await SqfliteApi.getMeetingList(page);
    dataList.addAll(list);
    if (list.length < 10) {
      isLoadingMore = false;
    } else {
      isLoadingMore = true;
    }
  }

  void addAudio() async {
    EasyLoading.show();
    FilePickerResult? result = await FilePicker.platform.pickFiles(
      withData: true,
    );
    if (result != null) {
      PlatformFile file = result.files.first;
      String filePath = await _saveFile(file);
      String fileName = file.name;
      await _audioPlayer.setAudioSource(AudioSource.file(filePath));
      var audiourl =
          await UploadOss.upload(filepath: filePath, rootDir: 'audio');
      int seconds = _audioPlayer.duration?.inSeconds ?? 0;
      int creationTime = DateTime.now().millisecondsSinceEpoch;
      Map<String, Object?> data = {
        'title': fileName,
        'type': 'NOTE',
        'seconds': seconds,
        'filepath': filePath,
        'audiourl': audiourl,
        'creationtime': creationTime,
      };
      final meetingId = await SqfliteApi.insertMeeting(data);
      if (meetingId != null) {
        dataList.insert(0, {
          'id': meetingId,
          ...data,
        });
      }
    }
    EasyLoading.dismiss();
  }

  Future<String> _saveFile(PlatformFile file) async {
    final directory = await getApplicationDocumentsDirectory();
    final String filePath = '${directory.path}/${file.name}';
    final File localFile = File(filePath);
    await localFile.writeAsBytes(file.bytes!);
    return filePath;
  }

  // 修改标题
  void editMeetingTitle(int id, String title) async {
    if (title.isNotEmpty) {
      SqfliteApi.editMeetingTitle(id, title);
      int index = dataList.indexWhere((item) => item['id'] == id);
      if (index != -1) {
        final dataMap = Map<String, dynamic>.from(dataList[index]);
        dataMap['title'] = title;
        dataList[index] = dataMap;
      }
    }
    Get.back();
  }

  // 删除数据
  void deleteMeeting(int id, String filepath) async {
    dataList.removeWhere((item) => item['id'] == id);
    // 删除数据库中的记录
    SqfliteApi.deleteMeeting(id);
    _deleteFile(filepath);
  }

  // 删除文件
  Future<void> _deleteFile(String filepath) async {
    File file = File(filepath);
    bool fileExists = await file.exists();
    if (fileExists) {
      await file.delete();
    }
  }
}