import 'dart:io';

import 'package:auto_route/annotations.dart';
import 'package:dio/dio.dart';
import 'package:eitc_erm_dental_flutter/entity/clinic_info.dart';
import 'package:eitc_erm_dental_flutter/funcs.dart';
import 'package:eitc_erm_dental_flutter/global.dart';
import 'package:eitc_erm_dental_flutter/http/gzkj_response.dart';
import 'package:eitc_erm_dental_flutter/http/http.dart';
import 'package:flutter/material.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:percent_indicator/percent_indicator.dart' as pi;

import '../../entity/history_item_info.dart';

///上传页面
@RoutePage(name: "uploadRoute")
class UploadPage extends StatefulWidget {
  //医院信息
  final ClinicInfo clinicInfo;

  ///要上传的历史记录列表
  final List<HistoryItemInfo> uploadList;

  ///是否是从查看页面上传
  final bool isFromView;

  const UploadPage(
      {super.key,
      required this.uploadList,
      required this.clinicInfo,
      required this.isFromView});

  @override
  State<UploadPage> createState() => _UploadPageState();
}

class _UploadPageState extends State<UploadPage> {
  ///是否正在上传
  bool _isUploading = false;

  ///是否显示停止上传dialog
  bool _isStopDialogShow = false;

  ///上传进度
  double _uploadProgress = 0.0;

  CancelToken? cancelToken;

  ///上传索引
  int _uploadingIndex = 0;

  //上传数量
  int _uploadCount = 0;

  @override
  void initState() {
    super.initState();
    screenDisableRotate();
    WidgetsBinding.instance.addPostFrameCallback((_) => _startUpload());
  }

  @override
  void dispose() {
    super.dispose();
    cancelToken?.cancel();
    cancelToken = null;
    //如果是从查看页面上传的,就需要恢复屏幕旋转
    if (widget.isFromView) {
      screenEnableRotate();
    }
  }

  @override
  Widget build(BuildContext context) {
    return PopScope(
        canPop: !_isUploading,
        onPopInvokedWithResult: _onPop,
        child: Scaffold(
          resizeToAvoidBottomInset: false,
          appBar: _getAppBar(),
          body: SafeArea(
              child: Padding(
            padding: EdgeInsets.only(top: 52.h),
            child: _isUploading
                ? _UploadingView(
                    progress: _uploadProgress,
                    fileIndex: _uploadingIndex,
                    fileCount: _uploadCount,
                  )
                : SizedBox(),
          )),
        ));
  }

  ///获取appbar
  AppBar _getAppBar() {
    return AppBar(
      title: Text(getS().upload),
    );
  }

  ///返回控制
  void _onPop(bool didPop, dynamic result) async {
    if (didPop) {
      return;
    }
    _showStopDialog();
  }

  ///显示停止弹窗
  void _showStopDialog() async {
    _isStopDialogShow = true;
    bool? bo = await showDialog<bool>(
        context: context,
        barrierDismissible: false,
        builder: (ctx) => AlertDialog(
              title: Text(getS().hint),
              content: Text(getS().stopUploadAlert),
              actions: [
                TextButton(
                    onPressed: () => Navigator.pop(ctx, false),
                    child: Text(getS().cancel)),
                TextButton(
                    onPressed: () => Navigator.pop(ctx, true),
                    child: Text(getS().confirm)),
              ],
            ));
    _isStopDialogShow = false;
    if (bo == null || !bo) {
      return;
    }
    _stopUpload();
  }

  ///关闭退出弹窗
  void _dismissStopDialog() {
    if (!_isStopDialogShow) {
      return;
    }
    Navigator.pop(context, false);
  }

  ///开始上传
  void _startUpload() {
    _doUpload();
  }

  ///停止上传
  void _stopUpload() {
    _dismissStopDialog();
    setState(() {
      _isUploading = false;
      _uploadProgress = 0.0;
      cancelToken?.cancel();
      cancelToken = null;
    });
  }

  ///执行上传
  void _doUpload() async {
    List<HistoryItemInfo> toUploadList = [];
    Stream<HistoryItemInfo> stream = Stream.fromIterable(widget.uploadList);
    await for (HistoryItemInfo info in stream) {
      //检查文件是否存在
      if (await File(info.path).exists()) {
        toUploadList.add(info);
      }
    }
    //没有可上传的文件
    if (toUploadList.isEmpty) {
      _showNothingToUpload();
      return;
    }
    _uploadCount = toUploadList.length;
    logd("上传数量=$_uploadCount");
    stream = Stream.fromIterable(toUploadList);
    //刷新页面
    setState(() {
      _isUploading = true;
    });
    await for (HistoryItemInfo info in stream) {
      File file = File(info.path);
      String suffix = file.path.substring(file.path.lastIndexOf("."));
      String fileName =
          "HS${info.prefixInfo?.idCard ?? ""}_${info.time}$suffix";
      MultipartFile part =
          await MultipartFile.fromFile(file.path, filename: fileName);

      cancelToken = CancelToken();
      String deviceModel =
          info.prefixInfo?.wifi.replaceAll(deviceWifiPrefix, "") ?? "";

      Map<String, dynamic> map = {
        "deviceID": deviceModel,
        "applicationKey": uploadApplicationKey,
        "idCardNo": info.prefixInfo?.idCard ?? "",
        "fileType": uploadFileType,
        "fileMedium": suffix,
        "fileName": fileName,
        "chunkData": part,
      };
      FormData formData = FormData.fromMap(map);
      logd("上传数据=$map");
      try {
        GzkjResponse<dynamic> response = await Http.instance.uploadGzkj(
            widget.clinicInfo.clinicApiUrl ?? "",
            data: formData,
            cancelToken: cancelToken,
            onSendProgress: _onUploadProgress,
            fromJsonT: (_) => 0);
        if (!response.isSuccess) {
          _showUploadExceptionDialog(
              response.message ?? getS().uploadFailedPleaseRetry);
          logd("上传失败,msg=${response.message}");
          break;
        } else {
          //都上传完了
          if (_uploadingIndex >= _uploadCount - 1) {
            _showUploadSuccessDialog();
            break;
          } else {
            //刷新界面
            setState(() {
              _uploadProgress = 0.0;
              _uploadingIndex++;
              logd("上传下一个,index=$_uploadingIndex");
            });
          }
        }
      } catch (e) {
        loge("上传失败", error: e);
        _showUploadExceptionDialog(getS().uploadFailedPleaseRetry);
        break;
      }
    }
  }

  ///显示上传成功弹窗
  void _showUploadSuccessDialog() async {
    _dismissStopDialog();
    await showDialog(
        context: context,
        builder: (ctx) => AlertDialog(
              title: Text(getS().hint),
              content: Text(getS().uploadSuccess),
              actions: [
                TextButton(
                    onPressed: () => Navigator.pop(ctx),
                    child: Text(getS().confirm))
              ],
            ));
    if (mounted) {
      Navigator.pop(context);
    }
  }

  ///显示上传错误弹窗
  void _showUploadExceptionDialog(String str) async {
    if (!_isUploading) {
      return;
    }
    _dismissStopDialog();
    if (context.mounted) {
      await showDialog(
          context: context,
          builder: (ctx) {
            return AlertDialog(
              title: Text(getS().uploadFailed),
              content: Text(str),
              actions: [
                TextButton(
                    onPressed: () => Navigator.pop(ctx),
                    child: Text(getS().confirm))
              ],
            );
          });
      if (mounted) {
        Navigator.pop(context);
      }
    }
  }

  ///显示没有可上传的文件的提示框
  void _showNothingToUpload() async {
    _isUploading = false;
    if (context.mounted) {
      await showDialog(
          context: context,
          builder: (ctx) {
            return AlertDialog(
              title: Text(getS().hint),
              content: Text(getS().noFileCanUpload),
              actions: [
                TextButton(
                    onPressed: () => Navigator.pop(ctx),
                    child: Text(getS().close))
              ],
            );
          });
      if (mounted) {
        Navigator.pop(context);
      }
    }
  }

  //假的接口错误
  void _fakeInterfaceError() async {
    await Future.delayed(const Duration(seconds: 2));
    _showUploadExceptionDialog(getS().uploadFailedByInterfaceError);
  }

  ///上传进度
  void _onUploadProgress(int count, int total) {
    double progress = count.toDouble() / total.toDouble();
    /*logd(
        "上传进度,count=$count,total=$total,progress=$progress,uploadingIndex=$_uploadingIndex,uploadCount=$_uploadCount");*/
    setState(() {
      _uploadProgress = progress;
    });
  }
}

///上传中视图
class _UploadingView extends StatelessWidget {
  ///进度,范围0到1
  final double progress;
  final int fileIndex;
  final int fileCount;

  const _UploadingView(
      {required this.progress,
      required this.fileIndex,
      required this.fileCount});

  @override
  Widget build(BuildContext context) {
    return Padding(
      padding: EdgeInsets.symmetric(horizontal: 30.w),
      child: Column(
        mainAxisSize: MainAxisSize.min,
        children: [
          Text(
            getS().uploadingHint,
            style: Theme.of(context).textTheme.titleMedium,
          ),
          SizedBox(
            height: 40.h,
          ),
          Column(
            crossAxisAlignment: CrossAxisAlignment.end,
            children: [
              pi.LinearPercentIndicator(
                  percent: progress,
                  lineHeight: 15.h,
                  progressColor: Theme.of(context).colorScheme.primary,
                  barRadius: Radius.circular(15.h),
                  padding: EdgeInsets.zero,
                  center: Text(
                    "${(progress * 100.0).round()}%",
                    style: TextStyle(fontSize: 12.sp, color: Colors.white),
                  )),
              SizedBox(
                height: 5.h,
              ),
              Text("${fileIndex + 1}/$fileCount")
            ],
          ),
        ],
      ),
    );
  }
}