#!/usr/bin/env python3
"""
Generate skills_index.json from all skills in the repository.
"""

import os
import json
import re

def generate_index(skills_dir, output_file):
    print(f"generating index from: {skills_dir}\n")
    skills = []

    for entry in sorted(os.listdir(skills_dir)):
        skill_path = os.path.join(skills_dir, entry)
        skill_file = os.path.join(skill_path, "SKILL.md")

        if not os.path.isdir(skill_path) or not os.path.exists(skill_file):
            continue

        with open(skill_file, 'r', encoding='utf-8') as f:
            content = f.read()

        skill_info = {
            "id": entry,
            "name": entry.replace("-", " ").title(),
            "description": "",
            "path": f"skills/{entry}"
        }

        # Extract from frontmatter
        fm_match = re.search(r'^---\s*\n(.*?)\n---', content, re.DOTALL)
        if fm_match:
            fm_content = fm_match.group(1)

            name_match = re.search(r'^name:\s*(.+)$', fm_content, re.MULTILINE)
            if name_match:
                skill_info["name"] = name_match.group(1).strip()

            desc_match = re.search(r'^description:\s*(.+)$', fm_content, re.MULTILINE)
            if desc_match:
                skill_info["description"] = desc_match.group(1).strip()

        skills.append(skill_info)
        print(f"  {skill_info['id']}: {skill_info['description'][:60]}...")

    # Write index
    with open(output_file, 'w', encoding='utf-8') as f:
        json.dump(skills, f, indent=2)

    print(f"\ngenerated index with {len(skills)} skills at: {output_file}")
    return skills


if __name__ == "__main__":
    base_dir = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
    skills_path = os.path.join(base_dir, "skills")
    output_path = os.path.join(base_dir, "skills_index.json")

    generate_index(skills_path, output_path)