"""
Markdown renderer for report generation.
"""

from .base_renderer import BaseRenderer
from typing import Dict, Any, Tuple, List

class MarkdownRenderer(BaseRenderer):
    """Renders content to Markdown format with format-specific extraction."""
    
    @classmethod
    def get_supported_formats(cls) -> List[str]:
        """Return supported Markdown formats."""
        return ['md', 'markdown']
    
    @classmethod
    def get_format_aliases(cls) -> List[str]:
        """Return format aliases."""
        return ['mdown', 'mkd']
    
    @classmethod
    def get_priority(cls) -> int:
        """Return priority for markdown renderer."""
        return 95
    
    def getExtractionPrompt(self, user_prompt: str, title: str) -> str:
        """Return only Markdown-specific guidelines; global prompt is built centrally."""
        return (
            "MARKDOWN FORMAT GUIDELINES:\n"
            "- Use proper Markdown syntax only (no HTML wrappers).\n"
            "- # for main title, ## for sections, ### for subsections.\n"
            "- Tables with | separators and a header row.\n"
            "- Bullet lists with - or *.\n"
            "- Emphasis with **bold** and *italic*.\n"
            "- Code blocks with ```language.\n"
            "- Horizontal rules (---) to separate major sections when helpful.\n"
            "- Include links [text](url) and images ![alt](url) when referenced by sources.\n"
            "OUTPUT: Return ONLY raw Markdown content without code fences."
        )
    
    async def render(self, extracted_content: str, title: str) -> Tuple[str, str]:
        """Render extracted content to Markdown format."""
        try:
            # The extracted content should already be Markdown from the AI
            # Just clean it up
            markdown_content = self._clean_markdown_content(extracted_content, title)
            
            return markdown_content, "text/markdown"
            
        except Exception as e:
            self.logger.error(f"Error rendering markdown: {str(e)}")
            # Return minimal markdown fallback
            return f"# {title}\n\nError rendering report: {str(e)}", "text/markdown"
    
    def _clean_markdown_content(self, content: str, title: str) -> str:
        """Clean and validate Markdown content from AI."""
        content = content.strip()
        
        # Remove markdown code blocks if present
        if content.startswith("```") and content.endswith("```"):
            lines = content.split('\n')
            if len(lines) > 2:
                content = '\n'.join(lines[1:-1]).strip()
        
        return content