#!/usr/bin/env python3
"""
Build script for LaTeX reference data.

This script demonstrates how to expand the reference database in the future.
Currently contains placeholders for automated data extraction.
"""

import json
import re
from pathlib import Path
from typing import Dict, Any, List


class ReferenceDataBuilder:
    """Builds LaTeX reference data from various sources."""
    
    def __init__(self):
        self.data_dir = Path(__file__).parent
        
    def build_all(self):
        """Build all reference data."""
        print("Building LaTeX reference data...")
        
        # For now, just validate existing data
        self.validate_json_files()
        
        # Future: Add these methods
        # self.extract_from_latex2e_help()
        # self.parse_symbol_list_pdf()
        # self.scrape_package_docs()
        # self.generate_error_patterns()
        
        print("Reference data build complete!")
    
    def validate_json_files(self):
        """Validate all JSON files are properly formatted."""
        for json_file in self.data_dir.rglob("*.json"):
            if json_file.name == "build_reference_data.py":
                continue
                
            try:
                with open(json_file, 'r', encoding='utf-8') as f:
                    data = json.load(f)
                print(f"✓ Valid: {json_file.relative_to(self.data_dir)}")
            except json.JSONDecodeError as e:
                print(f"✗ Invalid JSON in {json_file}: {e}")
            except Exception as e:
                print(f"✗ Error reading {json_file}: {e}")
    
    def extract_from_latex2e_help(self):
        """
        Future: Extract commands from latex2e-help-texinfo.
        
        Process:
        1. Download texinfo source from https://latexref.xyz/
        2. Parse texinfo format
        3. Extract command definitions, syntax, descriptions
        4. Generate JSON files organized by category
        """
        pass
    
    def parse_symbol_list_pdf(self):
        """
        Future: Parse The Comprehensive LaTeX Symbol List PDF.
        
        Process:
        1. Download PDF from CTAN
        2. Use PDF parsing library (pypdf, pdfplumber)
        3. Extract symbol tables
        4. Map symbols to commands and Unicode
        5. Organize by category (arrows, relations, etc.)
        """
        pass
    
    def scrape_package_docs(self):
        """
        Future: Extract package documentation.
        
        Process:
        1. Use texdoc to find package documentation
        2. Parse common packages (amsmath, graphicx, hyperref, etc.)
        3. Extract command lists and options
        4. Generate structured JSON
        """
        pass
    
    def generate_error_patterns(self):
        """
        Future: Build comprehensive error pattern database.
        
        Sources:
        1. LaTeX error message documentation
        2. TeX.SE common questions
        3. Community knowledge bases
        """
        pass
    
    def add_visual_symbols(self):
        """
        Future: Generate visual representations of symbols.
        
        Process:
        1. Create minimal LaTeX documents for each symbol
        2. Compile to PDF
        3. Convert to PNG/SVG
        4. Encode as base64 for embedding
        """
        pass


def main():
    """Run the build process."""
    builder = ReferenceDataBuilder()
    builder.build_all()


if __name__ == "__main__":
    main()