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

class FinbertSentimentTab extends StatelessWidget {
  final NewsArticleModel article;

  const FinbertSentimentTab({super.key, required this.article});

  @override
  Widget build(BuildContext context) {
    final finbert = article.finbertResult;
    final double compoundScore = finbert?.score ?? article.sentimentScore;
    final double confidenceScore = article.confidence;
    final String label = (finbert?.label ?? article.sentiment).toUpperCase();

    final double posRatio = finbert?.positiveProbability ?? (label == 'POSITIVE' ? 0.8 : 0.1);
    final double neuRatio = finbert?.neutralProbability ?? (label == 'NEUTRAL' ? 0.8 : 0.1);
    final double negRatio = finbert?.negativeProbability ?? (label == 'NEGATIVE' ? 0.8 : 0.1);

    final String aiText = finbert?.summarySnippet ?? (article.summary.isNotEmpty ? article.summary : 'FinBERT Sentiment-Analyse verarbeitet.');

    return SingleChildScrollView(
      padding: const EdgeInsets.all(16),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Row(
            mainAxisAlignment: MainAxisAlignment.spaceBetween,
            children: [
              Row(
                children: [
                  Icon(Icons.psychology, color: AppTheme.accentCyan, size: 24),
                  const SizedBox(width: 8),
                  const Text('FinBERT NLP Modell', style: TextStyle(fontWeight: FontWeight.bold, fontSize: 16, color: Colors.white)),
                ],
              ),
              StatusBadge.sentiment(label.isNotEmpty ? label : 'NEUTRAL', score: compoundScore),
            ],
          ),
          const SizedBox(height: 16),
          GlassContainer(
            padding: const EdgeInsets.all(16),
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                const Text('Sentiment Verteilung (Wahrscheinlichkeiten):', style: TextStyle(fontWeight: FontWeight.bold, fontSize: 13, color: Colors.white)),
                const SizedBox(height: 12),
                _buildProbBar('Positiv', posRatio, AppTheme.primaryEmerald),
                const SizedBox(height: 8),
                _buildProbBar('Neutral', neuRatio, Colors.amber),
                const SizedBox(height: 8),
                _buildProbBar('Negativ', negRatio, AppTheme.accentRed),
              ],
            ),
          ),
          const SizedBox(height: 16),
          GlassContainer(
            padding: const EdgeInsets.all(16),
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                Row(
                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
                  children: [
                    const Text('Konfidenz-Score:', style: TextStyle(color: Colors.white70, fontSize: 13)),
                    Text('${(confidenceScore * 100).toStringAsFixed(1)}%', style: TextStyle(color: AppTheme.accentCyan, fontWeight: FontWeight.bold, fontSize: 14)),
                  ],
                ),
                const SizedBox(height: 8),
                Row(
                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
                  children: [
                    const Text('Compound Sentiment-Wert:', style: TextStyle(color: Colors.white70, fontSize: 13)),
                    Text(compoundScore.toStringAsFixed(2), style: TextStyle(color: compoundScore >= 0 ? AppTheme.primaryEmerald : AppTheme.accentRed, fontWeight: FontWeight.bold, fontSize: 14)),
                  ],
                ),
              ],
            ),
          ),
          const SizedBox(height: 16),
          const Text('KI-Zusammenfassung & Relevanz:', style: TextStyle(fontWeight: FontWeight.bold, fontSize: 14, color: Colors.white)),
          const SizedBox(height: 8),
          Text(aiText, style: const TextStyle(color: Colors.white70, fontSize: 13, height: 1.4)),
        ],
      ),
    );
  }

  Widget _buildProbBar(String label, double ratio, Color color) {
    final pct = (ratio * 100).clamp(0.0, 100.0);
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        Row(
          mainAxisAlignment: MainAxisAlignment.spaceBetween,
          children: [
            Text(label, style: TextStyle(color: AppTheme.textMuted, fontSize: 12)),
            Text('${pct.toStringAsFixed(1)}%', style: TextStyle(color: color, fontWeight: FontWeight.bold, fontSize: 12)),
          ],
        ),
        const SizedBox(height: 4),
        ClipRRect(
          borderRadius: BorderRadius.circular(4),
          child: LinearProgressIndicator(
            value: ratio.clamp(0.0, 1.0),
            backgroundColor: Colors.white.withValues(alpha: 0.08),
            valueColor: AlwaysStoppedAnimation<Color>(color),
            minHeight: 6,
          ),
        ),
      ],
    );
  }
}