#!/usr/bin/env python3
"""
Generate `images/manifest.json` from the files present in the images/ folder.
Run this in the project root to refresh the manifest after adding/removing photos.
"""
import os
import json

IMAGEDIR = os.path.join(os.path.dirname(__file__), '..', 'images')
IMAGEDIR = os.path.abspath(IMAGEDIR)

def main():
    exts = ('.jpg', '.jpeg', '.png', '.webp', '.gif')

    files = [
        f for f in os.listdir(IMAGEDIR)
        if f.lower().endswith(exts)
    ]

    # Newest images first
    files.sort(
        key=lambda f: os.path.getctime(os.path.join(IMAGEDIR, f)),
        reverse=True
    )

    out = os.path.join(IMAGEDIR, 'manifest.json')

    with open(out, 'w', encoding='utf-8') as fh:
        json.dump(files, fh, indent=2)

    print(f'Wrote {len(files)} entries to {out}')

if __name__ == '__main__':
    main()