#!/usr/bin/env python3
"""
Create a PowerPoint deck from a folder of images, widescreen (16:9).

Usage:
  python make_ppt.py --images slides/ --out slides.pptx
"""

import argparse
from pathlib import Path
from pptx import Presentation
from pptx.util import Inches

def make_ppt(images_folder, out_file):
    prs = Presentation()

    # Set to 16:9 format (13.33 x 7.5 inches)
    prs.slide_width = Inches(13.33)
    prs.slide_height = Inches(7.5)

    blank_layout = prs.slide_layouts[6]  # empty slide

    # sort images by filename so slides are in order
    image_files = sorted(Path(images_folder).glob("*.jpg"))

    if not image_files:
        raise RuntimeError(f"No images found in {images_folder}")

    for img_path in image_files:
        slide = prs.slides.add_slide(blank_layout)
        # Place image to fill the entire slide
        left = top = Inches(0)
        slide.shapes.add_picture(
            str(img_path), left, top,
            width=prs.slide_width,
            height=prs.slide_height
        )

    prs.save(out_file)
    print(f"[✓] Saved {len(image_files)} slides to {out_file} (16:9 format)")

def main():
    ap = argparse.ArgumentParser()
    ap.add_argument("--images", required=True, help="Folder with images (e.g. slides/)")
    ap.add_argument("--out", required=True, help="Output .pptx file")
    args = ap.parse_args()

    make_ppt(args.images, args.out)

if __name__ == "__main__":
    main()