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

class MarkdownRenderer extends StatelessWidget {
  final String content;
  final int previewLines;

  const MarkdownRenderer({
    super.key,
    required this.content,
    this.previewLines = 3,
  });

  @override
  Widget build(BuildContext context) {
    final String previewText =
        content.split('\n').take(previewLines).join('\n');

    final bool hasMore = content.split('\n').length > previewLines;

    return InkWell(
      onTap: () => _showFullMarkdown(context),
      child: Padding(
        padding: const EdgeInsets.all(16.0),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            MarkdownBody(
              data: previewText,
              shrinkWrap: true,
              styleSheet: MarkdownStyleSheet(
                p: Theme.of(context).textTheme.bodyMedium,
                h1: Theme.of(context).textTheme.headlineSmall,
                h2: Theme.of(context).textTheme.titleLarge,
              ),
            ),
            if (hasMore) ...[
              const SizedBox(height: 8),
              Text(
                'Tap to read more...',
                style: Theme.of(context).textTheme.bodySmall?.copyWith(
                      color: Theme.of(context).colorScheme.primary,
                    ),
              ),
            ],
          ],
        ),
      ),
    );
  }

  void _showFullMarkdown(BuildContext context) {
    showModalBottomSheet(
      context: context,
      isScrollControlled: true,
      backgroundColor: Colors.transparent,
      builder: (context) => FullMarkdownSheet(content: content),
    );
  }
}

class FullMarkdownSheet extends StatelessWidget {
  final String content;

  const FullMarkdownSheet({
    super.key,
    required this.content,
  });

  @override
  Widget build(BuildContext context) {
    return DraggableScrollableSheet(
      initialChildSize: 0.9,
      minChildSize: 0.5,
      maxChildSize: 0.95,
      builder: (context, scrollController) {
        return Container(
          decoration: BoxDecoration(
            color: Theme.of(context).scaffoldBackgroundColor,
            borderRadius: const BorderRadius.vertical(
              top: Radius.circular(16),
            ),
          ),
          child: Column(
            children: [
              // Handle bar
              Container(
                margin: const EdgeInsets.symmetric(vertical: 8),
                width: 40,
                height: 4,
                decoration: BoxDecoration(
                  color: Colors.grey[300],
                  borderRadius: BorderRadius.circular(2),
                ),
              ),
              // Actions bar
              Padding(
                padding: const EdgeInsets.symmetric(horizontal: 16.0),
                child: Row(
                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
                  children: [
                    IconButton(
                      icon: const Icon(Icons.close),
                      onPressed: () => Navigator.pop(context),
                    ),
                    Row(
                      children: [
                        IconButton(
                          icon: const Icon(Icons.copy),
                          onPressed: () {
                            // Copy to clipboard
                            // You might want to add feedback when copied
                          },
                        ),
                        IconButton(
                          icon: const Icon(Icons.share),
                          onPressed: () {
                            // Implement share functionality
                          },
                        ),
                      ],
                    ),
                  ],
                ),
              ),
              // Markdown content
              Expanded(
                child: Markdown(
                  controller: scrollController,
                  data: content,
                  styleSheet: MarkdownStyleSheet(
                    p: Theme.of(context).textTheme.bodyLarge,
                    h1: Theme.of(context).textTheme.headlineMedium,
                    h2: Theme.of(context).textTheme.headlineSmall,
                    h3: Theme.of(context).textTheme.titleLarge,
                    code: Theme.of(context).textTheme.bodyMedium?.copyWith(
                          fontFamily: 'monospace',
                          backgroundColor: Colors.grey[200],
                        ),
                    codeblockDecoration: BoxDecoration(
                      color: Colors.grey[200],
                      borderRadius: BorderRadius.circular(8),
                    ),
                  ),
                  selectable: true,
                  padding: const EdgeInsets.all(16),
                ),
              ),
            ],
          ),
        );
      },
    );
  }
}