import 'package:flutter/material.dart';
import '../tools/tools.dart';

/// 通用列表卡片组件：
/// - 两两为一组，固定左右布局，平均分配宽度
/// - 左侧文字左对齐，右侧文字右对齐
/// - 文字过多时各自自动换行
/// - 如果一行只有一个元素，靠左显示
class DannerRepainItem extends StatelessWidget {
  final String title;
  final List<String> details;
  final bool showBottomTags;
  final List<Widget> bottomTags;
  final bool showTitleIcon;

  const DannerRepainItem({
    Key? key,
    required this.title,
    required this.details,
    this.showBottomTags = false,
    this.showTitleIcon = true,
    this.bottomTags = const [],
  }) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Padding(
      padding: const EdgeInsets.only(left: 15, right: 15, bottom: 15),
      child: Container(
        decoration: const BoxDecoration(
          color: Colors.white,
          borderRadius: BorderRadius.all(Radius.circular(5)),
        ),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.stretch,
          children: [
            // — 标题行 —
            Padding(
              padding: const EdgeInsets.symmetric(vertical: 10, horizontal: 15),
              child: Row(
                mainAxisAlignment: MainAxisAlignment.spaceBetween,
                children: [
                  Row(children: [
                    if (showTitleIcon)
                      const Icon(Icons.star_rate_sharp, color: Colors.green, size: 18),
                    SizedBox(width: showTitleIcon ? 5 : 0),
                    Text(title, style: const TextStyle(fontSize: 14)),
                  ]),
                  const Icon(Icons.arrow_forward_ios_rounded, color: Colors.grey, size: 15),
                ],
              ),
            ),
            const Divider(height: 1),

            // — 详情区：固定左右布局 —
            Padding(
              padding: const EdgeInsets.symmetric(vertical: 10, horizontal: 15),
              child: Column(
                children: _buildDetailRows(),
              ),
            ),

            // — 底部标签区 —
            if (showBottomTags && bottomTags.isNotEmpty)
              Padding(
                padding: const EdgeInsets.only(left: 15, right: 15, bottom: 15),
                child: Wrap(spacing: 5, runSpacing: 5, children: bottomTags),
              ),
          ],
        ),
      ),
    );
  }

  // 构建详情行
  List<Widget> _buildDetailRows() {
    List<Widget> rows = [];
    for (int i = 0; i < details.length; i += 2) {
      final left = details[i];
      final right = (i + 1 < details.length) ? details[i + 1] : '';

      rows.add(
        Padding(
          padding: const EdgeInsets.only(bottom: 8),
          child: _DetailRow(left: left, right: right),
        ),
      );
    }
    return rows;
  }
}

/// 详情行组件：固定左右布局，平均分配宽度，各自换行
/// 如果只有左侧文本，则靠左显示
class _DetailRow extends StatelessWidget {
  final String left;
  final String right;

  const _DetailRow({
    Key? key,
    required this.left,
    required this.right,
  }) : super(key: key);

  @override
  Widget build(BuildContext context) {
    // 如果右侧文本为空，只显示左侧文本，靠左显示
    if (right.isEmpty) {
      return Align(
        alignment: Alignment.centerLeft,
        child: _DetailText(left, textAlign: TextAlign.left),
      );
    }

    return Row(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        // 左侧文本 - 占50%宽度
        Expanded(
          flex: 1,
          child: _DetailText(left, textAlign: TextAlign.left),
        ),

        // 中间间距
        const SizedBox(width: 10),

        // 右侧文本 - 占50%宽度
        Expanded(
          flex: 1,
          child: _DetailText(right, textAlign: TextAlign.right),
        ),
      ],
    );
  }
}

/// Detail 文本封装：支持自动换行和指定的对齐方式
class _DetailText extends StatelessWidget {
  final String text;
  final TextAlign textAlign;

  const _DetailText(this.text, {
    Key? key,
    required this.textAlign,
  }) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Text(
      text,
      style: HhTextStyleUtils.secondaryTitleStyle,
      softWrap: true, // 允许换行
      textAlign: textAlign, // 使用指定的对齐方式
    );
  }
}