#!/usr/bin/env python3
"""
Write Build Info

Generates build-info.json for Angular apps with git date metadata.
Used by the builder config for Angular app builds.

Usage:
    python write_build_info.py <app_name> <chatbot_dir>

Example:
    python write_build_info.py creator /path/to/john/chatbot
"""

import json
import os
import subprocess
import sys


def get_git_date(working_dir: str) -> str:
    """Get the date from the most recent git commit."""
    try:
        result = subprocess.run(
            ['git', 'log', '-1', '--format=%cd'],
            cwd=working_dir,
            capture_output=True,
            text=True,
            check=True
        )
        return result.stdout.strip()
    except subprocess.CalledProcessError as e:
        print(f"Warning: Could not get git date: {e}")
        return "Unknown"


def write_build_info(app_name: str, chatbot_dir: str) -> None:
    """Write build-info.json for the specified app."""
    # App display names
    app_display_names = {
        'creator': 'Chatbot 2.0 (Beta)',
        'player': 'Chatbot Player',
        'sas': 'Sales and Support'
    }

    display_name = app_display_names.get(app_name, app_name)
    build_date = get_git_date(chatbot_dir)

    file_path = os.path.join(chatbot_dir, 'projects', app_name, 'public', 'build-info.json')

    build_info = {
        "name": display_name,
        "date": build_date
    }

    # Ensure directory exists
    os.makedirs(os.path.dirname(file_path), exist_ok=True)

    with open(file_path, 'w') as f:
        json.dump(build_info, f, indent=2)
        f.write('\n')

    print(f"Build info written for {app_name}: {file_path}")


def main():
    if len(sys.argv) < 3:
        print("Usage: python write_build_info.py <app_name> <chatbot_dir>")
        sys.exit(1)

    app_name = sys.argv[1]
    chatbot_dir = sys.argv[2]

    if not os.path.exists(chatbot_dir):
        print(f"Error: Directory not found: {chatbot_dir}")
        sys.exit(1)

    write_build_info(app_name, chatbot_dir)


if __name__ == "__main__":
    main()