problem_check_system/lib/modules/problem/views/widgets/problem_card.dart

import 'package:flutter/material.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:get/get.dart';
import 'package:intl/intl.dart';
import 'package:problem_check_system/app/routes/app_routes.dart';
import 'package:problem_check_system/data/models/sync_status.dart';
import 'package:problem_check_system/data/models/problem_model.dart';
import 'package:problem_check_system/modules/problem/views/widgets/custom_button.dart';
import 'package:tdesign_flutter/tdesign_flutter.dart';
import 'dart:io'; // 添加文件操作支持

// 定义枚举类型
enum ProblemCardViewType { buttons, checkbox }

class ProblemCard extends StatelessWidget {
  final Problem problem;
  final ProblemCardViewType viewType;
  final Function(Problem, bool)? onChanged;
  final bool isSelected; // 改为必需参数

  const ProblemCard({
    super.key,
    required this.problem,
    this.viewType = ProblemCardViewType.buttons,
    this.onChanged,
    required this.isSelected, // 改为必需参数
  });

  @override
  Widget build(BuildContext context) {
    // 根据是否已删除决定卡片的颜色
    final bool isDeleted = problem.isDeleted;
    final Color cardColor = isDeleted
        ? Colors.grey[300]!
        : Theme.of(context).cardColor;
    final Color contentColor = isDeleted
        ? Colors.grey[600]!
        : Theme.of(context).textTheme.bodyMedium!.color!;

    return Card(
      color: cardColor,
      child: InkWell(
        onTap: viewType == ProblemCardViewType.checkbox
            ? () {
                onChanged?.call(problem, !isSelected);
              }
            : null,
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: <Widget>[
            ListTile(
              leading: _buildImageWidget(isDeleted), // 使用新的图片构建方法
              title: Text(
                '问题描述',
                style: TextStyle(fontSize: 16.sp, color: contentColor),
              ),
              subtitle: LayoutBuilder(
                builder: (context, constraints) {
                  return Text(
                    problem.description,
                    maxLines: 2,
                    overflow: TextOverflow.ellipsis,
                    style: TextStyle(fontSize: 14.sp, color: contentColor),
                  );
                },
              ),
            ),
            SizedBox(height: 8.h),
            Row(
              children: [
                SizedBox(width: 16.w),
                Icon(Icons.location_on, color: contentColor, size: 16.h),
                SizedBox(width: 8.w),
                SizedBox(
                  width: 100.w,
                  child: Text(
                    problem.location,
                    style: TextStyle(fontSize: 12.sp, color: contentColor),
                    overflow: TextOverflow.ellipsis,
                    maxLines: 1,
                  ),
                ),
                SizedBox(width: 16.w),
                Icon(Icons.access_time, color: contentColor, size: 16.h),
                SizedBox(width: 8.w),
                Expanded(
                  child: Text(
                    DateFormat(
                      'yyyy-MM-dd HH:mm:ss',
                    ).format(problem.creationTime),
                    style: TextStyle(fontSize: 12.sp, color: contentColor),
                  ),
                ),
              ],
            ),
            SizedBox(height: 8.h),
            Row(
              mainAxisAlignment: MainAxisAlignment.spaceBetween,
              children: <Widget>[
                SizedBox(width: 16.w),
                Wrap(
                  spacing: 8,
                  children: [
                    ...problem.isDeleted
                        ? [
                            TDTag(
                              '已删除',
                              theme: TDTagTheme.danger,
                              textColor: isDeleted ? Colors.grey[700] : null,
                              backgroundColor: isDeleted
                                  ? Colors.grey[400]
                                  : null,
                            ),
                          ]
                        : [
                            problem.syncStatus == SyncStatus.synced
                                ? TDTag(
                                    '已上传',
                                    isLight: true,
                                    theme: TDTagTheme.success,
                                  )
                                : TDTag(
                                    '未上传',
                                    isLight: true,
                                    theme: TDTagTheme.danger,
                                  ),
                            problem.bindData != null &&
                                    problem.bindData!.isNotEmpty
                                ? TDTag(
                                    '已绑定',
                                    isLight: true,
                                    theme: TDTagTheme.primary,
                                  )
                                : TDTag(
                                    '未绑定',
                                    isLight: true,
                                    theme: TDTagTheme.warning,
                                  ),
                          ],
                  ],
                ),
                const Spacer(),
                _buildBottomActions(isDeleted),
              ],
            ),
            SizedBox(height: 8.h),
          ],
        ),
      ),
    );
  }

  Widget _buildImageWidget(bool isDeleted) {
    return AspectRatio(
      aspectRatio: 1, // 强制正方形
      child: _buildImageContent(isDeleted),
    );
  }

  Widget _buildImageContent(bool isDeleted) {
    // 检查是否有图片路径
    if (problem.imageUrls.isEmpty || problem.imageUrls[0].localPath.isEmpty) {
      // 如果没有图片，显示默认占位图
      return Image.asset(
        'assets/images/problem_preview.png',
        fit: BoxFit.cover, // 使用 cover 来填充正方形区域
        color: isDeleted ? Colors.grey[500] : null,
        colorBlendMode: isDeleted ? BlendMode.saturation : null,
      );
    }

    final String imagePath = problem.imageUrls[0].localPath;

    // 检查文件是否存在
    final File imageFile = File(imagePath);
    if (!imageFile.existsSync()) {
      // 如果文件不存在，显示默认占位图
      return Image.asset(
        'assets/images/problem_preview.png',
        fit: BoxFit.cover,
        color: isDeleted ? Colors.grey[500] : null,
        colorBlendMode: isDeleted ? BlendMode.saturation : null,
      );
    }

    // 如果文件存在，使用 Image.file 加载
    return Image.file(
      imageFile,
      fit: BoxFit.cover, // 使用 cover 来填充正方形区域
      color: isDeleted ? Colors.grey[500] : null,
      colorBlendMode: isDeleted ? BlendMode.saturation : null,
      errorBuilder: (context, error, stackTrace) {
        // 如果加载失败，显示默认图片
        return Image.asset(
          'assets/images/problem_preview.png',
          fit: BoxFit.cover,
          color: isDeleted ? Colors.grey[500] : null,
          colorBlendMode: isDeleted ? BlendMode.saturation : null,
        );
      },
    );
  }

  Widget _buildBottomActions(bool isDeleted) {
    switch (viewType) {
      case ProblemCardViewType.buttons:
        return Row(
          children: [
            if (!isDeleted)
              CustomButton(
                text: '修改',
                onTap: () {
                  Get.toNamed(AppRoutes.problemForm, arguments: problem);
                },
              ),
            if (!isDeleted) SizedBox(width: 8.w),
            CustomButton(
              text: '查看',
              onTap: () {
                Get.toNamed(
                  AppRoutes.problemForm,
                  arguments: problem,
                  parameters: {'isReadOnly': 'true'},
                );
              },
            ),
            SizedBox(width: 16.w),
          ],
        );
      case ProblemCardViewType.checkbox:
        return Padding(
          padding: EdgeInsets.only(right: 16.w),
          child: Checkbox(
            value: isSelected,
            onChanged: isDeleted
                ? null
                : (bool? value) {
                    if (value != null) {
                      onChanged?.call(problem, value);
                    }
                  },
          ),
        );
    }
  }
}