#!/usr/bin/env python3
"""Render a demo "photo" (JPEG) for attachments: an optional product image on a photo-like canvas
with a caption bar and a camera timestamp. Used by seed-orders-returns.sh.

  make-demo-photo.py OUT.jpg [--image product.png] [--parcel] "Title" ["line 2" ["line 3"]]
"""
import random, sys, datetime
from PIL import Image, ImageDraw, ImageFilter, ImageFont

args = sys.argv[1:]
out = args.pop(0)
img_path = None; parcel = False
while args and args[0].startswith("--"):
    a = args.pop(0)
    if a == "--image": img_path = args.pop(0)
    elif a == "--parcel": parcel = True
lines = args or ["Demo"]

W, H = 1200, 900
random.seed(out)
bg = Image.new("RGB", (W, H), (226, 224, 220))
d = ImageDraw.Draw(bg)
# soft vignette / table surface
for i in range(0, H, 6):
    shade = 200 + int(26 * i / H)
    d.line([(0, i), (W, i)], fill=(shade, shade - 3, shade - 8), width=6)
bg = bg.filter(ImageFilter.GaussianBlur(1.2))
d = ImageDraw.Draw(bg)

def font(size, bold=True):
    for p in ("/usr/share/fonts/truetype/dejavu/DejaVuSans-Bold.ttf" if bold else "/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf",
              "/System/Library/Fonts/Supplemental/Arial Bold.ttf", "/System/Library/Fonts/Supplemental/Arial.ttf"):
        try: return ImageFont.truetype(p, size)
        except Exception: pass
    return ImageFont.load_default()

if parcel:
    # cardboard parcel with a shipping label
    x0, y0, x1, y1 = 180, 140, 1020, 660
    d.rectangle([x0, y0, x1, y1], fill=(176, 132, 88), outline=(120, 86, 50), width=6)
    d.line([(x0, (y0 + y1) // 2), (x1, (y0 + y1) // 2)], fill=(140, 100, 60), width=5)
    d.rectangle([x0 + 60, y0 + 50, x0 + 520, y0 + 250], fill=(248, 248, 245), outline=(80, 80, 80), width=3)
    d.text((x0 + 80, y0 + 70), "RETOURE", font=font(44), fill=(30, 30, 30))
    d.text((x0 + 80, y0 + 130), lines[0][:28], font=font(28, False), fill=(40, 40, 40))
    for k in range(18):  # barcode
        d.rectangle([x0 + 80 + k * 22, y0 + 180, x0 + 80 + k * 22 + random.choice((4, 8, 12)), y0 + 235], fill=(20, 20, 20))
    d.rectangle([x0 + 600, y0 + 60, x1 - 60, y0 + 160], fill=(200, 40, 40))
    d.text((x0 + 630, y0 + 85), "FRAGILE", font=font(40), fill=(255, 255, 255))
elif img_path:
    try:
        im = Image.open(img_path).convert("RGBA")
        im.thumbnail((720, 560))
        shadow = Image.new("RGBA", (im.width + 40, im.height + 40), (0, 0, 0, 0))
        ImageDraw.Draw(shadow).rounded_rectangle([20, 24, im.width + 20, im.height + 28], radius=24, fill=(0, 0, 0, 90))
        shadow = shadow.filter(ImageFilter.GaussianBlur(14))
        px, py = (W - im.width) // 2, 110
        bg.paste(shadow, (px - 20, py - 20), shadow)
        bg.paste(im, (px, py), im)
        d = ImageDraw.Draw(bg)
    except Exception as e:
        d.text((80, 300), f"(Bild nicht ladbar: {e})", font=font(26, False), fill=(120, 40, 40))

# caption bar
bar = Image.new("RGBA", (W, 170), (20, 20, 24, 200))
bg.paste(bar, (0, H - 170), bar)
d = ImageDraw.Draw(bg)
d.text((48, H - 150), lines[0][:60], font=font(40), fill=(255, 255, 255))
for i, l in enumerate(lines[1:3]):
    d.text((48, H - 100 + i * 42), l[:90], font=font(28, False), fill=(225, 225, 225))
stamp = datetime.datetime.now().strftime("%d.%m.%Y %H:%M")
d.text((W - 300, 28), stamp, font=font(26, False), fill=(255, 200, 60))

# subtle grain
noise = Image.effect_noise((W, H), 12).convert("L")
bg = Image.blend(bg, Image.merge("RGB", (noise, noise, noise)), 0.05)
bg.convert("RGB").save(out, "JPEG", quality=86)
print(out)