import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:vitalapp/architecture/utils/prompt_box.dart';
import 'package:vitalapp/components/alert_dialog.dart';
import 'package:vitalapp/database/entities/defines.dart';
import 'package:vitalapp/database/entities/patient.dart';
import 'package:vitalapp/global.dart';
import 'package:vitalapp/managers/interfaces/data_sync.dart';

class _SyncUploadDialogController extends GetxController {
  final syscManager = Get.find<IDataSyncManager>();

  /// 数据列表
  final dataList = RxList<PatientEntity>();

  /// 已上传数量
  final uploadedCount = RxInt(0);

  /// 数据总量
  int get totalCount => dataList.length;

  /// 当前处理索引
  int get handleIndex => uploadedCount.value;

  /// 当前处理数据
  PatientEntity? get handleData {
    if (dataList.isEmpty) {
      return null;
    }
    if (handleIndex == dataList.length) {
      return dataList.last;
    }
    return dataList[handleIndex];
  }

  @override
  void onReady() {
    super.onReady();
    _run();
  }

  Future<void> _run() async {
    final loaded = await _loadData();
    // 无数据也要等待页面显示一会
    await Future.delayed(const Duration(seconds: 1));

    if (!loaded) {
      PromptBox.toast("未查询到待上传记录");
      Get.back(result: false);
      return;
    }
    for (var i = 0; i < totalCount; i++) {
      if (!kIsOnline) {
        PromptBox.toast("请检查网络连接");
        Get.back(result: false);
        return;
      }
      final success = await _handleSingle();

      if (success) {
      } else {
        PromptBox.toast("上传 ${handleData?.name} 失败");
        await Future.delayed(const Duration(milliseconds: 500));
      }
      uploadedCount.value = uploadedCount.value + 1;
      // 等进度更新展示一下
      await Future.delayed(const Duration(milliseconds: 500));
    }

    if (uploadedCount > 0) {
      await Future.delayed(const Duration(milliseconds: 500));
      PromptBox.toast("批量同步结束");
    }

    Get.back(result: true);
  }

  Future<bool> _handleSingle() async {
    final data = dataList[handleIndex];
    final result = await syscManager.syncPatientAllData(data.code);
    return result;
  }

  Future<bool> _loadData() async {
    final list = await syscManager.getPatientWaitUploadAllList();
    if (list.isEmpty) {
      await Future.delayed(const Duration(milliseconds: 500));
      PromptBox.toast("暂无离线数据需要同步");
      Get.back(result: false);
      return false;
    }
    dataList.value = list;
    return true;
  }
}

class SyncUploadDialog extends GetView<_SyncUploadDialogController> {
  const SyncUploadDialog({super.key});

  static Future<bool> show() async {
    final result = await Get.dialog(
      const SyncUploadDialog(),
      barrierDismissible: false,
    );
    return result;
  }

  @override
  Widget build(BuildContext context) {
    return VAlertDialog(
      content: _buildBody(context),
      onCanceled: () {
        return false;
      },
    );
  }

  Widget _buildBody(BuildContext context) {
    return GetBuilder<_SyncUploadDialogController>(
      init: _SyncUploadDialogController(),
      builder: (context) {
        return Obx(() {
          // if (!controller.isRunning) {
          //   return const SizedBox();
          // }
          final data = controller.handleData;
          return Container(
            height: 280,
            alignment: Alignment.center,
            child: data != null
                ? _SyncProgress(
                    uploadedCount: controller.uploadedCount.value,
                    totalCount: controller.totalCount,
                    patientName: data.name,
                  )
                : const SizedBox(
                    width: 28,
                    height: 28,
                    child: CircularProgressIndicator(),
                  ),
          );
        });
      },
    );
  }
}

class _SyncProgress extends StatelessWidget {
  static final textStyle = TextStyle(fontSize: 20, color: Colors.grey.shade700);
  static const textSpace = SizedBox(width: 12);
  final int uploadedCount;
  final int totalCount;
  final String patientName;

  const _SyncProgress({
    required this.uploadedCount,
    required this.totalCount,
    required this.patientName,
  });

  @override
  Widget build(BuildContext context) {
    return Column(
      mainAxisSize: MainAxisSize.max,
      mainAxisAlignment: MainAxisAlignment.end,
      crossAxisAlignment: CrossAxisAlignment.center,
      children: [
        const SizedBox(
          width: 28,
          height: 28,
          child: CircularProgressIndicator(),
        ),
        const SizedBox(height: 36),
        Row(
          mainAxisSize: MainAxisSize.min,
          children: [
            Text(
              "正在上传",
              style: textStyle,
            ),
            textSpace,
            Text(
              patientName,
              style: const TextStyle(fontSize: 20, color: Colors.black),
            ),
            textSpace,
            Text(
              "的离线数据",
              style: textStyle,
            ),
          ],
        ),
        const SizedBox(height: 20),
        Row(
          mainAxisSize: MainAxisSize.min,
          children: [
            Text(
              "已上传居民",
              style: TextStyle(fontSize: 18, color: Colors.grey.shade700),
            ),
            textSpace,
            Text(
              uploadedCount.toString(),
              style: const TextStyle(
                fontSize: 20,
                color: Colors.green,
                fontWeight: FontWeight.bold,
              ),
            ),
            Text(" /", style: textStyle),
            Text(
              "$totalCount",
              style: const TextStyle(fontSize: 20, color: Colors.black),
            ),
            textSpace,
            Text("人", style: textStyle),
          ],
        ),
        const SizedBox(height: 20),
      ],
    );
  }
}