from PIL import Image
import os, numpy as np

def pad_image(src):
    img = Image.open(src).convert('RGBA')
    w, h = img.size
    arr = np.array(img)
    non_white = np.where(np.any(arr[:,:,:3] < 230, axis=(1,2)))[0]
    if len(non_white) == 0: return
    if non_white[0] / h > 0.05:
        print(f"Skip: {os.path.basename(src)}"); return
    pad_top = int(h * 0.13)
    pad_bot = int(h * 0.08)
    new_img = Image.new('RGBA', (w, h + pad_top + pad_bot), (255,255,255,255))
    new_img.paste(img, (0, pad_top))
    new_img.save(src, 'PNG')
    print(f"Padded: {os.path.basename(src)}")

for dirpath, dirs, files in os.walk('/var/www/3dcaketopper.nl/verjaardag/images'):
    for f in files:
        if f.lower().endswith('.png'): pad_image(os.path.join(dirpath, f))