from typing import Dict, Any


class DisplayFormatter:
    """Utility class for formatting display output"""
    
    @staticmethod
    def format_sentiment_result(result: Dict[str, Any]) -> str:
        """Format sentiment analysis result for display"""
        if "error" in result:
            return f"❌ {result['error']}"
        
        sentiment = result["sentiment"]
        confidence = result["confidence"]
        emoji = "😊" if sentiment == "positive" else "😞"
        
        return f"{emoji} Sentiment: {sentiment}\n📊 Confidence: {confidence:.2%}"
    
    @staticmethod
    def show_loading(message: str = "Analysis in progress..."):
        """Show loading message"""
        print(f"\n🔍 {message}")
    
    @staticmethod
    def show_warning(message: str):
        """Show warning message"""
        print(f"⚠️  {message}")
    
    @staticmethod
    def show_error(message: str):
        """Show error message"""
        print(f"❌ {message}")
    
    @staticmethod
    def show_success(message: str):
        """Show success message"""
        print(f"✅ {message}")
    
    @staticmethod
    def format_fillmask_result(result: Dict[str, Any]) -> str:
        """Format fill-mask prediction result for display"""
        if "error" in result:
            return f"❌ {result['error']}"
        
        output = []
        output.append(f"📝 Original: {result['original_text']}")
        output.append(f"🎭 Masks found: {result['masks_count']}")
        output.append("")
        
        if result['masks_count'] == 1:
            # Single mask
            output.append("🔮 Predictions:")
            for i, pred in enumerate(result['predictions'], 1):
                confidence_bar = "█" * int(pred['score'] * 10)
                output.append(f"  {i}. '{pred['token']}' ({pred['score']:.1%}) {confidence_bar}")
                output.append(f"     → {pred['sequence']}")
        else:
            # Multiple masks
            for mask_info in result['predictions']:
                output.append(f"🔮 Mask #{mask_info['mask_position']} predictions:")
                for i, pred in enumerate(mask_info['predictions'], 1):
                    confidence_bar = "█" * int(pred['score'] * 10)
                    output.append(f"  {i}. '{pred['token']}' ({pred['score']:.1%}) {confidence_bar}")
                output.append("")
        
        return "\n".join(output)
    
    @staticmethod
    def format_textgen_result(result: Dict[str, Any]) -> str:
        """Format text generation result for display"""
        if "error" in result:
            return f"❌ {result['error']}"
        
        output = []
        output.append(f"📝 Prompt: {result['prompt']}")
        output.append(f"⚙️  Parameters: max_length={result['parameters']['max_length']}, "
                     f"temperature={result['parameters']['temperature']}")
        output.append("-" * 50)
        
        for i, gen in enumerate(result['generations'], 1):
            if len(result['generations']) > 1:
                output.append(f"🎯 Generation {i}:")
            
            output.append(f"📄 Full text: {gen['text']}")
            if gen['continuation']:
                output.append(f"✨ Continuation: {gen['continuation']}")
            
            if i < len(result['generations']):
                output.append("-" * 30)
        
        return "\n".join(output)
    
    @staticmethod
    def format_moderation_result(result: Dict[str, Any]) -> str:
        """Format content moderation result for display"""
        if "error" in result:
            return f"❌ {result['error']}"
        
        output = []
        output.append(f"📝 Original: {result['original_text']}")
        
        if result['is_modified']:
            output.append(f"🛡️  Moderated: {result['moderated_text']}")
            output.append(f"⚠️  Status: Content modified ({result['words_replaced']} words replaced)")
            status_emoji = "🔴"
        else:
            output.append("✅ Status: Content approved (no modifications needed)")
            status_emoji = "🟢"
        
        # Toxicity score bar
        score = result['toxic_score']
        score_bar = "█" * int(score * 10)
        output.append(f"{status_emoji} Toxicity Score: {score:.1%} {score_bar}")
        
        return "\n".join(output)
    
    @staticmethod
    def format_ner_result(result: Dict[str, Any]) -> str:
        """Format NER result for display"""
        if "error" in result:
            return f"❌ {result['error']}"
        
        output = []
        output.append(f"📝 Original: {result['original_text']}")
        output.append(f"✨ Highlighted: {result['highlighted_text']}")
        output.append(f"🎯 Found {result['total_entities']} entities (threshold: {result['confidence_threshold']:.2f})")
        
        if result['entities']:
            output.append("\n📋 Detected Entities:")
            for entity in result['entities']:
                confidence_bar = "█" * int(entity['confidence'] * 10)
                output.append(f"  {entity['emoji']} {entity['text']} → {entity['label']} "
                             f"({entity['confidence']:.1%}) {confidence_bar}")
        
        if result['entity_stats']:
            output.append("\n📊 Entity Statistics:")
            for entity_type, stats in result['entity_stats'].items():
                unique_entities = list(set(stats['entities']))
                emoji = result['entities'][0]['emoji'] if result['entities'] else "🏷️"
                for ent in result['entities']:
                    if ent['label'] == entity_type:
                        emoji = ent['emoji']
                        break
                
                output.append(f"  {emoji} {entity_type}: {stats['count']} occurrences")
                if len(unique_entities) <= 3:
                    output.append(f"     → {', '.join(unique_entities)}")
                else:
                    output.append(f"     → {', '.join(unique_entities[:3])}... (+{len(unique_entities)-3} more)")
        
        return "\n".join(output)
    
    @staticmethod
    def format_ner_analysis(result: Dict[str, Any]) -> str:
        """Format comprehensive NER document analysis"""
        if "error" in result:
            return f"❌ {result['error']}"
        
        output = []
        output.append("📊 Document Analysis Results")
        output.append("=" * 50)
        
        # Document statistics
        stats = result['document_stats']
        output.append(f"📄 Document: {stats['word_count']} words, {stats['char_count']} characters")
        output.append(f"📝 Structure: ~{stats['sentence_count']} sentences")
        output.append(f"🎯 Entity Density: {stats['entity_density']:.2%} (entities per word)")
        
        # Most common entity type
        if 'most_common_entity_type' in result:
            common = result['most_common_entity_type']
            output.append(f"🏆 Most Common: {common['emoji']} {common['type']} ({common['count']} occurrences)")
        
        output.append(f"\n✨ Highlighted Text:")
        output.append(result['highlighted_text'])
        
        if result['entity_stats']:
            output.append(f"\n📈 Detailed Statistics:")
            for entity_type, stats in result['entity_stats'].items():
                unique_entities = list(set(stats['entities']))
                emoji = "🏷️"
                for ent in result['entities']:
                    if ent['label'] == entity_type:
                        emoji = ent['emoji']
                        break
                
                output.append(f"\n{emoji} {entity_type} ({stats['count']} total):")
                for entity in unique_entities:
                    count = stats['entities'].count(entity)
                    output.append(f"  • {entity} ({count}x)")
        
        return "\n".join(output)