#!/usr/bin/env python3
"""
Flatten kickstart recipes with relative %include paths.
Converts %include ingredients/... to %include ../ingredients/... relative to recipes/ location.
"""

import os
import sys
import subprocess
import tempfile


def flatten_recipe(recipe_path, output_path):
    """Flatten a recipe file, converting relative paths."""
    project_root = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
    
    # Read the recipe
    with open(recipe_path, 'r') as f:
        content = f.read()
    
    # Convert %include paths to relative (from recipes/ perspective)
    lines = []
    for line in content.split('\n'):
        if line.startswith('%include '):
            # Get the fragment path from %include path
            parts = line.split(None, 1)
            if len(parts) >= 2:
                fragment_path = parts[1]
                # Make it relative to recipes/
                # From recipes/, ingredients/ is at ../ingredients/
                if fragment_path.startswith('ingredients/'):
                    relative_path = '../' + fragment_path
                else:
                    relative_path = '../ingredients/' + fragment_path
                lines.append('%include ' + relative_path)
            else:
                lines.append(line)
        else:
            lines.append(line)
    
    # Write to temp file in recipes directory
    temp_fd, temp_path = tempfile.mkstemp(suffix='.ks', dir=os.path.dirname(recipe_path))
    
    try:
        os.write(temp_fd, '\n'.join(lines).encode('utf-8'))
        os.close(temp_fd)
        
        # Call ksflatten
        cmd = ['ksflatten', '-c', temp_path, '-o', output_path]
        result = subprocess.run(cmd, capture_output=True, text=True)
        
        if result.returncode != 0:
            print(f"Error flattening {os.path.basename(recipe_path)}:", file=sys.stderr)
            print(result.stderr, file=sys.stderr)
            return False
        return True
    finally:
        os.unlink(temp_path)


def main():
    if len(sys.argv) < 3:
        print("Usage: ksflatten-relative RECIPE_DIR DISH_DIR", file=sys.stderr)
        print("Example: ksflatten-relative recipes dishes", file=sys.stderr)
        sys.exit(1)
    
    recipe_dir = sys.argv[1]
    dish_dir = sys.argv[2]
    
    if not os.path.isdir(recipe_dir):
        print(f"Error: {recipe_dir} is not a directory", file=sys.stderr)
        sys.exit(1)
    
    os.makedirs(dish_dir, exist_ok=True)
    
    recipes = [f for f in os.listdir(recipe_dir) if f.endswith('.cfg')]
    
    for recipe_name in sorted(recipes):
        recipe_path = os.path.join(recipe_dir, recipe_name)
        dish_path = os.path.join(dish_dir, recipe_name)
        
        print(f"  Processing: {recipe_name}")
        if not flatten_recipe(recipe_path, dish_path):
            sys.exit(1)
    
    print("✓ All recipes flattened to dishes")


if __name__ == '__main__':
    main()