// Author: fruit.com.cn

import 'package:flutter/material.dart';

import '../../../core/data/models/comment.dart';
import '../../../core/formatting/relative_date_time.dart';
import '../../../core/theme/app_colors.dart';
import '../../../core/theme/app_dimens.dart';
import '../../../core/widgets/remote_image.dart';
import '../../../l10n/app_localizations.dart';

/// 评论条目的交互回调集合。
class CommentInteractionHandlers {
  const CommentInteractionHandlers({required this.onReply});

  final ValueChanged<DramaComment> onReply;
}

/// 单条评论或回复的展示与操作行。
class CommentTile extends StatelessWidget {
  const CommentTile({
    super.key,
    required this.comment,
    required this.handlers,
    this.isReply = false,
  });

  final DramaComment comment;
  final CommentInteractionHandlers handlers;
  final bool isReply;

  @override
  Widget build(BuildContext context) {
    final l10n = AppLocalizations.of(context)!;
    final name = comment.nickname.isEmpty
        ? l10n.anonymousUser
        : comment.nickname;
    return Padding(
      key: Key('comment-item-${comment.id}'),
      padding: const EdgeInsets.only(top: 10, bottom: 12),
      child: Row(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          _avatar(),
          const SizedBox(width: 12),
          Expanded(
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                Text(
                  name,
                  style: const TextStyle(
                    color: AppColors.muted,
                    fontSize: 12,
                    fontWeight: FontWeight.w400,
                  ),
                ),
                const SizedBox(height: 2),
                Text(
                  comment.content,
                  style: const TextStyle(
                    color: AppColors.cream,
                    fontSize: 16,
                    height: 1.4,
                  ),
                ),
                if (comment.isPending)
                  Padding(
                    padding: const EdgeInsets.only(top: 4),
                    child: Text(
                      l10n.underReview,
                      key: Key('comment-pending-${comment.id}'),
                      style: const TextStyle(
                        color: AppColors.blueSoft,
                        fontSize: AppDimens.caption,
                      ),
                    ),
                  ),
                if (comment.createdAt != null || !isReply)
                  Padding(
                    padding: const EdgeInsets.only(top: 4),
                    child: _metadata(context, l10n),
                  ),
              ],
            ),
          ),
        ],
      ),
    );
  }

  Widget _avatar() {
    final size = isReply ? 28.0 : 40.0;
    if (comment.avatarUrl.isEmpty) {
      return CircleAvatar(
        radius: size / 2,
        backgroundColor: AppColors.raised,
        child: Icon(
          Icons.person_rounded,
          size: isReply ? 16 : 22,
          color: AppColors.cream,
        ),
      );
    }
    return ClipOval(
      child: SizedBox(
        width: size,
        height: size,
        child: RemoteImage(comment.avatarUrl, fit: BoxFit.cover),
      ),
    );
  }

  Widget _metadata(BuildContext context, AppLocalizations l10n) {
    final createdAt = comment.createdAt;
    return Row(
      children: [
        if (createdAt != null)
          Text(
            formatRelativeDateTime(createdAt, l10n),
            style: const TextStyle(color: AppColors.subtle, fontSize: 12),
          ),
        if (createdAt != null && !isReply) ...[
          const SizedBox(width: 8),
          const Text(
            '·',
            style: TextStyle(color: AppColors.muted, fontSize: 12),
          ),
          const SizedBox(width: 8),
        ],
        if (!isReply)
          TextButton(
            key: Key('comment-reply-${comment.id}'),
            style: TextButton.styleFrom(
              foregroundColor: AppColors.muted,
              padding: EdgeInsets.zero,
              minimumSize: const Size(0, 24),
              tapTargetSize: MaterialTapTargetSize.shrinkWrap,
            ),
            onPressed: () => handlers.onReply(comment),
            child: Text(
              l10n.reply,
              style: const TextStyle(fontSize: 12, fontWeight: FontWeight.w400),
            ),
          ),
      ],
    );
  }
}