import 'dart:convert';

import 'package:background_downloader/background_downloader.dart';
import 'package:common_utils/common_utils.dart';
import 'package:ducafe_ui_core/ducafe_ui_core.dart';
import 'dart:io';
import 'package:permission_handler/permission_handler.dart';
import 'package:external_path/external_path.dart';
import 'package:dio/dio.dart';
import 'package:dio/io.dart';

import 'package:flutter/material.dart';
import 'package:flutter_easyloading/flutter_easyloading.dart';
import 'package:forui/forui.dart';
import 'package:get/get.dart';
import 'package:pj_supermarket_cloud/common/index.dart';

class VersionManageController extends GetxController {
  static const String _tag = "版本管理 Controller";

  final appC = Get.find<AppControl>();

  RxInt currentPage = RxInt(1);

  RxInt totalPage = RxInt(0);

  RxInt pageSize = RxInt(3);

  RxList<ServiceAppVersion> versionList = RxList();

  @override
  void onInit() async {
    super.onInit();
    await getVersionList();
  }

  @override
  void onClose() {}

  /// 搜索
  Future<void> doPage({int? page}) async {
    if (page != null) currentPage.value = page;
    await getVersionList(isLoading: true);
  }

  /// 获取版本列表
  Future<void> getVersionList({bool isLoading = false}) async {
    if (isLoading) {
      EasyLoading.show(
        status: '查询中...',
        maskType: EasyLoadingMaskType.black,
      );
    }
    try {
      final params = {
        "appUniqueCode": Constants.deviceUniqueCode,
      };
      final data = await AppApi.openCardList(params);
      logger.d("|$_tag|获取版本列表成功:${json.encode(data)}");
      if (data == null || ObjectUtil.isEmptyList(data.records)) {
        return;
      }
      versionList.value = data.records!;
      totalPage.value = data.total;
    } finally {
      if (isLoading) {
        Future.delayed(const Duration(seconds: 1), () {
          EasyLoading.dismiss();
        });
      }
    }
  }

  /// 远程下载apk
  Future<void> doDownload(String url) async {
    if (url.isEmpty) return;
    String downUrl = url;
    if (!url.startsWith("http") && !url.startsWith("https")) {
      downUrl = "${Constants.ossUrl}/api/admin/sys-file/oss/file?fileName=$url";
    }
    logger.d("|$_tag|远程下载apk,url:$downUrl");
    try {
      EasyLoading.show(
        status: '下载中...',
        maskType: EasyLoadingMaskType.black,
      );
      if (Platform.isAndroid) {
        var hasStorage = await Permission.storage.request().isGranted;
        if (!hasStorage) {
          EasyLoading.showError("存储权限未授权，无法下载");
          return;
        }
        if (await Permission.manageExternalStorage.isDenied) {
          final g = await Permission.manageExternalStorage.request();
          hasStorage = hasStorage || g.isGranted;
        }
        final ext = AppFileTool.getFileExtension(downUrl);
        final useExt = ObjectUtil.isEmpty(ext) ? ".apk" : ext;
        final now = DateTime.now();
        final dateStr = DateUtil.formatDate(
          now,
          format: DateFormats.full,
        );
        final fileName =
            "pj_xfj_${dateStr}_${now.millisecondsSinceEpoch}$useExt";
        final task = DownloadTask(
          url: downUrl,
          filename: fileName,
          updates: Updates.statusAndProgress,
          baseDirectory: BaseDirectory.applicationDocuments,
        );
        final result = await FileDownloader().download(
          task,
          onProgress: (progress) {
            logger.d("|$_tag|下载进度:$progress");
            EasyLoading.showProgress(
              progress,
              status: "(${(progress * 100).toStringAsFixed(2)}%)下载中...",
            );
          },
          onStatus: (status) => {logger.d("|$_tag|下载状态:$status")},
        );
        if (result.status == TaskStatus.complete) {
          final movedPath = await FileDownloader().moveToSharedStorage(
            task,
            SharedStorage.downloads,
            mimeType: useExt == ".apk"
                ? "application/vnd.android.package-archive"
                : "application/octet-stream",
          );
          if (ObjectUtil.isNotEmpty(movedPath)) {
            logger.i("|$_tag|下载完成:$movedPath");
            EasyLoading.showSuccess("下载完成");
          } else {
            EasyLoading.showError("移动到下载目录失败");
          }
        } else {
          EasyLoading.showError("下载失败");
        }
      } else {
        EasyLoading.showInfo("当前平台不支持系统下载");
      }
    } catch (e) {
      logger.e("|$_tag|远程下载apk,下载失败:$e");
      EasyLoading.showError("下载失败");
    } finally {
      EasyLoading.dismiss();
    }
  }
}

Widget settingVersionSetting(BuildContext context) {
  final versionC = Get.put<VersionManageController>(
    VersionManageController(),
  );
  return <Widget>[
    buildSettingVersionSettingSearch(context),
    buildSettingVersionSettingList(context).expanded(),
    Obx(
      () => appPage(
        context,
        pageNo: versionC.currentPage.value,
        pageSize: versionC.pageSize.value,
        total: versionC.totalPage.value,
        onPageChanged: (pageNo) => versionC.doPage(page: pageNo),
      ),
    )
  ].toColumn();
}

// 版本更新搜索区域
Widget buildSettingVersionSettingSearch(BuildContext context) {
  final versionC = Get.find<VersionManageController>();
  final theme = FTheme.of(context);
  return <Widget>[
    const Spacer(),
    FButton(
      prefix: FIcon(
        FAssets.icons.search,
        size: theme.typography.base.fontSize,
      ),
      label: Text(
        '搜索',
        style: theme.typography.base.copyWith(
          color: theme.colorScheme.secondary,
        ),
      ),
      onPress: () => versionC.doPage(),
    ),
  ].toRow();
}

// 版本更新列表区域
Widget buildSettingVersionSettingList(BuildContext context) {
  final versionC = Get.find<VersionManageController>();
  return Obx(() {
    if (versionC.versionList.isEmpty) {
      return Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            const Icon(Icons.info_outline, size: 48, color: Colors.grey),
            const SizedBox(height: 10),
            Text("暂无版本信息", style: TextStyle(color: Colors.grey[600])),
          ],
        ),
      );
    }
    return GridView.builder(
      padding: const EdgeInsets.all(10),
      gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
        crossAxisCount: 1,
        crossAxisSpacing: 10,
        mainAxisSpacing: 10,
        childAspectRatio: 6,
      ),
      itemCount: versionC.versionList.length,
      itemBuilder: (context, index) {
        final item = versionC.versionList[index];
        return buildSettingVersionSettingCardCopy(context, item);
      },
    );
  });
}

Widget buildSettingVersionSettingCardCopy(
  BuildContext context,
  ServiceAppVersion item,
) {
  final versionC = Get.find<VersionManageController>();
  final theme = FTheme.of(context);
  return <Widget>[
    <Widget>[
      Text(
        "${AppPlatformEnum.values.fromCode(item.platform ?? '')?.title ?? '未知平台'} - ${item.versionName ?? '未知版本'}",
        style: theme.typography.lg.copyWith(fontWeight: FontWeight.bold),
        overflow: TextOverflow.ellipsis,
      ),
      SizedBox(width: 20.w),
      FBadge(
        label: Text(
          AppVersionStatusEnum.values.fromCode(item.status ?? '')?.title ??
              '未知状态',
          style: theme.typography.sm.copyWith(height: 1, color: Colors.white),
        ).padding(),
      ),
    ].toRow(),
    SizedBox(height: 10.w),
    Text(
      "更新内容",
      style: theme.typography.base.copyWith(fontWeight: FontWeight.bold),
    ),
    SizedBox(height: 10.w),
    Text(
      item.updateContent ?? '暂无更新内容',
      style: theme.typography.base.copyWith(color: Colors.grey),
    ),
    SizedBox(height: 10.w),
    <Widget>[
      FIcon(
        FAssets.icons.sendHorizontal,
        size: theme.typography.base.fontSize,
      ),
      SizedBox(width: 10.w),
      Text(
        item.downloadUrl ?? '未知下载地址',
        style: theme.typography.sm.copyWith(color: Colors.grey),
      ),
      const Spacer(),
      FIcon(
        FAssets.icons.arrowDownToLine,
        size: theme.typography.base.fontSize,
      ),
    ]
        .toRow()
        .padding(horizontal: 20.w, vertical: 15.w)
        .decorated(
          color: theme.colorScheme.secondary,
          border: Border.all(
            color: theme.colorScheme.primary,
            width: 1,
          ),
          borderRadius: theme.style.borderRadius,
        )
        .onTap(() => versionC.doDownload(item.downloadUrl ?? '')),
  ]
      .toColumn(crossAxisAlignment: CrossAxisAlignment.start)
      .padding(horizontal: 20.w, vertical: 15.w)
      .decorated(
        color: theme.colorScheme.muted,
        border: Border.all(
          color: theme.colorScheme.primary,
          width: 1,
        ),
        borderRadius: theme.style.borderRadius,
      );
}

// 版本管理卡片
Widget buildSettingVersionSettingCard(
  BuildContext context,
  ServiceAppVersion item,
) {
  final theme = FTheme.of(context);
  return Container(
    padding: const EdgeInsets.all(15),
    decoration: BoxDecoration(
      color: Colors.white,
      borderRadius: BorderRadius.circular(8),
      border: Border.all(color: Colors.grey.shade300),
      boxShadow: [
        BoxShadow(
          color: Colors.black.withOpacity(0.05),
          blurRadius: 4,
          offset: const Offset(0, 2),
        ),
      ],
    ),
    child: Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        Row(
          mainAxisAlignment: MainAxisAlignment.spaceBetween,
          children: [
            Expanded(
              child: Text(
                "${item.platform ?? '未知平台'} - ${item.versionName ?? '未知版本'}",
                style:
                    theme.typography.lg.copyWith(fontWeight: FontWeight.bold),
                overflow: TextOverflow.ellipsis,
              ),
            ),
            Container(
              padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 2),
              decoration: BoxDecoration(
                color: item.status == '已发布'
                    ? Colors.green.withOpacity(0.1)
                    : Colors.grey.withOpacity(0.1),
                borderRadius: BorderRadius.circular(4),
              ),
              child: Text(
                item.status ?? '未知状态',
                style: theme.typography.sm.copyWith(
                  color: item.status == '已发布' ? Colors.green : Colors.grey,
                ),
              ),
            ),
          ],
        ),
        const SizedBox(height: 8),
        Row(
          children: [
            Text("Build: ${item.versionCode ?? '-'}",
                style: theme.typography.base.copyWith(color: Colors.grey)),
            const SizedBox(width: 10),
            if (item.isForce == true) _buildTag(context, "强制更新", Colors.red),
            if (item.isSilent == true)
              _buildTag(context, "静默更新", Colors.orange),
          ],
        ),
        const Divider(height: 20),
        Text("更新内容:",
            style: theme.typography.base.copyWith(fontWeight: FontWeight.bold)),
        const SizedBox(height: 4),
        Text(
          item.updateContent ?? '暂无更新内容',
          style: theme.typography.base.copyWith(color: Colors.grey[800]),
        ),
        if (item.downloadUrl != null && item.downloadUrl!.isNotEmpty) ...[
          const SizedBox(height: 10),
          Container(
            padding: const EdgeInsets.all(8),
            decoration: BoxDecoration(
              color: Colors.grey[100],
              borderRadius: BorderRadius.circular(4),
            ),
            child: Row(
              children: [
                const Icon(Icons.link, size: 16, color: Colors.blue),
                const SizedBox(width: 5),
                Expanded(
                  child: Text(
                    item.downloadUrl!,
                    style: theme.typography.sm.copyWith(color: Colors.blue),
                    overflow: TextOverflow.ellipsis,
                  ),
                ),
              ],
            ),
          ),
        ],
      ],
    ),
  );
}

Widget _buildTag(BuildContext context, String text, Color color) {
  return Container(
    margin: const EdgeInsets.only(left: 8),
    padding: const EdgeInsets.symmetric(horizontal: 6, vertical: 2),
    decoration: BoxDecoration(
      border: Border.all(color: color),
      borderRadius: BorderRadius.circular(4),
    ),
    child: Text(text, style: TextStyle(color: color, fontSize: 10)),
  );
}