import 'dart:io';
import 'package:dating_touchme_app/generated/assets.dart';
import 'package:dating_touchme_app/pages/message/image_viewer_page.dart';
import 'package:flutter/material.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:get/get.dart';
import 'package:im_flutter_sdk/im_flutter_sdk.dart';

class ImageItem extends StatelessWidget {
  final EMImageMessageBody imageBody;
  final bool isSentByMe;
  final bool showTime;
  final String formattedTime;
  final EMMessage message; // 添加消息对象以获取状态
  final VoidCallback? onResend; // 添加重发回调

  const ImageItem({
    required this.imageBody,
    required this.isSentByMe,
    required this.showTime,
    required this.formattedTime,
    required this.message,
    this.onResend,
    super.key,
  });

  @override
  Widget build(BuildContext context) {
    return Column(
      children: [
        // 显示时间
        if (showTime) _buildTimeLabel(),
        Container(
          padding: EdgeInsets.symmetric(
            horizontal: 16.w,
            vertical: 8.h,
          ),
          child: Builder(
            builder: (context) {
              // 计算图片尺寸
              double maxWidth = 180.w;
              double width = maxWidth;
              double height = width * (304 / 289); // 按289:304比例计算高度
              final imageHeight = height + 10.h; // 加上 margin top (10.h)
              
              return Row(
                mainAxisAlignment: isSentByMe ? MainAxisAlignment.end : MainAxisAlignment.start,
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  if (!isSentByMe) _buildAvatar(),
                  if (!isSentByMe) SizedBox(width: 8.w),
                  // 发送消息时，状态在左侧，与图片垂直居中对齐
                  if (isSentByMe)
                    SizedBox(
                      height: imageHeight,
                      child: Center(
                        child: _buildMessageStatus(),
                      ),
                    ),
                  if (isSentByMe) SizedBox(width: 10.w),
                  GestureDetector(
                    onTap: _onImageTap,
                    child: Container(
                      margin: EdgeInsets.only(top: 10.h),
                      decoration: BoxDecoration(
                        color: isSentByMe ? Color(0xff8E7BF6) : Colors.white,
                        borderRadius: BorderRadius.circular(18.w),
                      ),
                      child: ClipRRect(
                        borderRadius: BorderRadius.circular(18.w),
                        child: _buildImage(),
                      ),
                    ),
                  ),
                  if (isSentByMe) SizedBox(width: 8.w),
                  if (isSentByMe) _buildAvatar(),
                ],
              );
            },
          ),
        ),
      ],
    );
  }

  // 构建时间标签
  Widget _buildTimeLabel() {
    return Container(
      alignment: Alignment.center,
      padding: EdgeInsets.symmetric(
        horizontal: 16.w,
      ),
      child: Container(
        padding: EdgeInsets.symmetric(
          horizontal: 12.w,
        ),
        child: Text(
          formattedTime,
          style: TextStyle(
            fontSize: 12.sp,
            color: Colors.grey,
          ),
        ),
      ),
    );
  }

  // 构建头像
  Widget _buildAvatar() {
    return Container(
      width: 40.w,
      height: 40.w,
      decoration: BoxDecoration(
        borderRadius: BorderRadius.circular(20.w),
        image: DecorationImage(
          image: AssetImage(Assets.imagesAvatarsExample),
          fit: BoxFit.cover,
        ),
      ),
    );
  }

  // 构建图片
  Widget _buildImage() {
    // 按289x304比例计算图片尺寸
    // 限制最大宽度为289，高度按比例计算
    double maxWidth = 180.w;
    double width = maxWidth;
    double height = width * (304 / 289); // 按289:304比例计算高度
    // 尝试显示本地图片
    final localPath = imageBody.localPath;
    if (localPath.isNotEmpty) {
      return Image.file(
        File(localPath),
        width: width,
        height: height,
        fit: BoxFit.cover,
        errorBuilder: (context, error, stackTrace) {
          return _buildErrorContainer(width, height);
        },
      );
    }

    // 尝试显示网络原图
    final remotePath = imageBody.remotePath;
    if (remotePath != null && remotePath.isNotEmpty) {
      return Image.network(
        remotePath,
        width: width,
        height: height,
        fit: BoxFit.cover,
        loadingBuilder: (context, child, loadingProgress) {
          if (loadingProgress == null) return child;
          return _buildLoadingContainer(width, height);
        },
        errorBuilder: (context, error, stackTrace) {
          return _buildErrorContainer(width, height);
        },
      );
    }

    // 默认显示错误容器
    return _buildErrorContainer(width, height);
  }

  // 构建加载中的容器（网络图片加载时）
  Widget _buildLoadingContainer(double width, double height) {
    return Container(
      width: width,
      height: height,
      decoration: BoxDecoration(
        borderRadius: BorderRadius.circular(18.w),
        color: Colors.grey[200],
      ),
      child: Center(
        child: CircularProgressIndicator(
          strokeWidth: 2.w,
          valueColor: AlwaysStoppedAnimation<Color>(
            Colors.grey[400]!,
          ),
        ),
      ),
    );
  }

  // 构建消息状态（发送中、已发送、失败重发）
  Widget _buildMessageStatus() {
    // 只对发送的消息显示状态
    if (!isSentByMe) {
      return SizedBox.shrink();
    }

    // 检查消息状态
    final status = message.status;
    
    if (status == MessageStatus.FAIL) {
      // 发送失败，显示重发按钮
      return GestureDetector(
        onTap: onResend,
        child: Container(
          width: 20.w,
          height: 20.w,
          decoration: BoxDecoration(
            color: Colors.red.withOpacity(0.1),
            shape: BoxShape.circle,
          ),
          child: Icon(
            Icons.refresh,
            size: 14.w,
            color: Colors.red,
          ),
        ),
      );
    } else if (status == MessageStatus.PROGRESS) {
      // 发送中，显示加载动画
      return Container(
        width: 16.w,
        height: 16.w,
        child: CircularProgressIndicator(
          strokeWidth: 2,
          valueColor: AlwaysStoppedAnimation<Color>(
            Colors.grey,
          ),
        ),
      );
    } else {
      // 发送成功，不显示任何状态
      return SizedBox.shrink();
    }
  }

  // 构建错误容器
  Widget _buildErrorContainer(double width, double height) {
    return Container(
      width: width,
      height: height,
      padding: EdgeInsets.all(8.w),
      decoration: BoxDecoration(
        borderRadius: BorderRadius.circular(18.w),
        color: Colors.grey[200],
      ),
      alignment: Alignment.center,
      child: Icon(
        Icons.image_not_supported,
        size: 32.w,
        color: Colors.grey[400],
      ),
    );
  }

  // 点击图片事件
  void _onImageTap() {
    // 优先使用本地路径，如果没有则使用网络路径
    String? imagePath = imageBody.localPath;
    String? imageUrl = imageBody.remotePath;

    // 打开图片查看器
    Get.to(
      () => ImageViewerPage(
        imagePath: imagePath,
        imageUrl: imageUrl,
      ),
      transition: Transition.fade,
      duration: const Duration(milliseconds: 300),
    );
  }
}