#!/usr/bin/env python3
"""Generate result images at different step counts for quality comparison."""
import io, time
import requests
import numpy as np
from PIL import Image, ImageFilter
import app as A

COMFY = "http://127.0.0.1:8188"
MODEL = "flux2.0/flux-2-klein-9b-fp8.safetensors"
DTYPE = "fp8_e4m3fn_fast"
OUT = "output"

image = Image.open("用来重绘.jpg").convert("RGB")
mask_img = Image.open("用来重绘.png").convert("RGBA")
mask_data = np.max(np.array(mask_img), axis=2)
m = Image.fromarray(mask_data, mode="L")
if m.size != image.size:
    m = m.resize(image.size, Image.LANCZOS)
m = m.filter(ImageFilter.GaussianBlur(radius=4))
alpha = Image.eval(m, lambda x: 255 - x)
r, g, b = image.split()
rgba = Image.merge("RGBA", (r, g, b, alpha))
buf = io.BytesIO(); rgba.save(buf, format="PNG"); buf.seek(0)
fname = requests.post(f"{COMFY}/upload/image",
                      files={"image": ("hair_input.png", buf, "image/png")}).json()["name"]

# fixed seed for fair comparison
SEED = 123456789
imgs = []
labels = []
for steps in [2, 3, 4, 6]:
    wf = A.build_workflow(fname, "填充遮罩区域的头发", seed=SEED)
    wf["16"]["inputs"]["unet_name"] = MODEL
    wf["16"]["inputs"]["weight_dtype"] = DTYPE
    wf["1"]["inputs"]["steps"] = steps
    pid = requests.post(f"{COMFY}/prompt", json={"prompt": wf}).json()["prompt_id"]
    t0 = time.time()
    while True:
        time.sleep(0.1)
        h = requests.get(f"{COMFY}/history/{pid}").json()
        if pid in h and "17" in h[pid].get("outputs", {}):
            ts = {mm[0]: mm[1].get("timestamp") for mm in h[pid]["status"]["messages"]}
            dur = (ts["execution_success"] - ts["execution_start"]) / 1000.0
            info = h[pid]["outputs"]["17"]["images"][0]
            data = requests.get(f"{COMFY}/view", params={
                "filename": info["filename"], "subfolder": info.get("subfolder", ""),
                "type": info.get("type", "output")}).content
            im = Image.open(io.BytesIO(data)).convert("RGB")
            imgs.append(im)
            labels.append(f"steps={steps}  {dur:.2f}s")
            print(f"steps={steps}: {dur:.2f}s", flush=True)
            break

# build side-by-side contact sheet
from PIL import ImageDraw
h0 = imgs[0].height
w0 = imgs[0].width
pad = 10
bar = 28
sheet = Image.new("RGB", (w0 * len(imgs) + pad * (len(imgs) + 1),
                          h0 + bar + pad * 2), (26, 26, 46))
d = ImageDraw.Draw(sheet)
for i, (im, lb) in enumerate(zip(imgs, labels)):
    x = pad + i * (w0 + pad)
    sheet.paste(im, (x, bar + pad))
    d.text((x + 4, 6), lb, fill=(233, 69, 96))
sheet.save(f"{OUT}/compare_steps.png")
print("saved:", f"{OUT}/compare_steps.png", flush=True)