import 'package:flutter/material.dart';
import 'package:url_launcher/url_launcher.dart';
import '../models/news_article_model.dart';
import '../../../core/theme/app_theme.dart';
import '../../../core/widgets/status_badge.dart';
import 'finbert_sentiment_tab.dart';

class ArticleSentimentDialog extends StatefulWidget {
  final NewsArticleModel articleData;

  const ArticleSentimentDialog({
    super.key,
    required this.articleData,
  });

  @override
  State<ArticleSentimentDialog> createState() => _ArticleSentimentDialogState();
}

class _ArticleSentimentDialogState extends State<ArticleSentimentDialog> with SingleTickerProviderStateMixin {
  late TabController _tabController;

  @override
  void initState() {
    super.initState();
    _tabController = TabController(length: 2, vsync: this);
  }

  @override
  void dispose() {
    _tabController.dispose();
    super.dispose();
  }

  void _openOriginalSource() async {
    final urlStr = widget.articleData.sourceUrl;
    if (urlStr.isNotEmpty) {
      final uri = Uri.parse(urlStr);
      if (await canLaunchUrl(uri)) {
        await launchUrl(uri, mode: LaunchMode.externalApplication);
      }
    }
  }

  @override
  Widget build(BuildContext context) {
    final article = widget.articleData;
    final title = article.title.isNotEmpty ? article.title : 'Nachrichtenartikel';
    final author = article.author.isNotEmpty ? article.author : 'Finlytic News';
    final summary = article.summary;
    final sourceUrl = article.sourceUrl;
    final contentRaw = article.contentRaw;
    final publishedAt = "${article.publishedAt.day}.${article.publishedAt.month}.${article.publishedAt.year}";
    final status = article.status.isNotEmpty ? article.status : 'Completed';
    final rawSentiment = article.sentiment;

    final compoundScore = article.finbertResult?.score ?? article.sentimentScore;

    final Widget listBadge = rawSentiment.isNotEmpty
        ? StatusBadge.sentiment(rawSentiment.toUpperCase(), score: compoundScore)
        : StatusBadge(
            label: status.toUpperCase(),
            color: status.toLowerCase().contains('analyz') ? AppTheme.primaryEmerald : AppTheme.accentCyan,
          );

    return Dialog(
      backgroundColor: AppTheme.cardSurface,
      shape: RoundedRectangleBorder(
        borderRadius: BorderRadius.circular(16),
        side: BorderSide(color: AppTheme.glassBorder),
      ),
      child: Container(
        width: 650,
        height: 600,
        padding: const EdgeInsets.all(20),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            Row(
              children: [
                Expanded(
                  child: Column(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: [
                      Text(
                        title,
                        style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 16, color: Colors.white),
                        maxLines: 2,
                        overflow: TextOverflow.ellipsis,
                      ),
                      const SizedBox(height: 4),
                      Text(
                        'Quelle: $author • $publishedAt',
                        style: TextStyle(color: AppTheme.textMuted, fontSize: 12),
                      ),
                    ],
                  ),
                ),
                const SizedBox(width: 8),
                listBadge,
                IconButton(
                  onPressed: () => Navigator.pop(context),
                  icon: const Icon(Icons.close, color: Colors.white70),
                ),
              ],
            ),
            const SizedBox(height: 12),
            Container(
              decoration: BoxDecoration(
                color: AppTheme.glassSurface,
                borderRadius: BorderRadius.circular(10),
                border: Border.all(color: AppTheme.glassBorder),
              ),
              child: TabBar(
                controller: _tabController,
                indicatorColor: AppTheme.primaryEmerald,
                labelColor: AppTheme.primaryEmerald,
                unselectedLabelColor: AppTheme.textMuted,
                indicatorSize: TabBarIndicatorSize.tab,
                tabs: const [
                  Tab(icon: Icon(Icons.article_outlined, size: 18), text: 'Artikel-Inhalt'),
                  Tab(icon: Icon(Icons.psychology_outlined, size: 18), text: 'FinBERT Sentiment'),
                ],
              ),
            ),
            const SizedBox(height: 12),
            Expanded(
              child: TabBarView(
                controller: _tabController,
                children: [
                  SingleChildScrollView(
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        if (summary.isNotEmpty) ...[
                          const Text('Zusammenfassung:', style: TextStyle(fontWeight: FontWeight.bold, fontSize: 13, color: Colors.white)),
                          const SizedBox(height: 4),
                          Container(
                            padding: const EdgeInsets.all(10),
                            decoration: BoxDecoration(
                              color: AppTheme.glassSurface,
                              borderRadius: BorderRadius.circular(8),
                            ),
                            child: Text(summary, style: const TextStyle(color: Colors.white70, fontSize: 13)),
                          ),
                          const SizedBox(height: 12),
                        ],
                        if (article.matchedAssets.isNotEmpty) ...[
                          const Text('Zugeordnete Assets:', style: TextStyle(fontWeight: FontWeight.bold, fontSize: 13, color: Colors.white)),
                          const SizedBox(height: 6),
                          Wrap(
                            spacing: 6,
                            children: article.matchedAssets.map((asset) {
                              return Chip(
                                label: Text('${asset.symbol} (${asset.isin})', style: const TextStyle(fontSize: 11, color: Colors.white)),
                                backgroundColor: AppTheme.glassSurface,
                                side: BorderSide(color: AppTheme.glassBorder),
                              );
                            }).toList(),
                          ),
                          const SizedBox(height: 12),
                        ],
                        const Text('Vollständiger Artikeltext:', style: TextStyle(fontWeight: FontWeight.bold, fontSize: 13, color: Colors.white)),
                        const SizedBox(height: 6),
                        Text(
                          contentRaw.isNotEmpty ? contentRaw : 'Kein vollständiger Text verfügbar.',
                          style: const TextStyle(color: Colors.white70, fontSize: 13, height: 1.4),
                        ),
                      ],
                    ),
                  ),
                  FinbertSentimentTab(article: article),
                ],
              ),
            ),
            const SizedBox(height: 12),
            Row(
              mainAxisAlignment: MainAxisAlignment.spaceBetween,
              children: [
                if (sourceUrl.isNotEmpty)
                  TextButton.icon(
                    onPressed: _openOriginalSource,
                    icon: const Icon(Icons.open_in_new, size: 16),
                    label: const Text('Originalquelle im Browser öffnen'),
                    style: TextButton.styleFrom(foregroundColor: AppTheme.accentCyan),
                  )
                else
                  const SizedBox.shrink(),
                ElevatedButton(
                  onPressed: () => Navigator.pop(context),
                  style: ElevatedButton.styleFrom(backgroundColor: AppTheme.primaryEmerald, foregroundColor: Colors.black),
                  child: const Text('Schließen'),
                ),
              ],
            ),
          ],
        ),
      ),
    );
  }
}