# -*- coding: utf-8 -*-
"""原创离线合成样例；不连接模型、不读取账户。输出位于脚本旁。
已有输入保留，修改输入后可以重跑。失败边界由 --negative 单独演示。
"""
from pathlib import Path
import sys, json, csv, math, io, hashlib, html, base64, re
sys.stdout.reconfigure(encoding='utf-8')
sys.stderr.reconfigure(encoding='utf-8')
BASE = Path(__file__).resolve().parent
NEG = '--negative' in sys.argv
def write(name, value):
    p=BASE/name; p.parent.mkdir(parents=True,exist_ok=True)
    if isinstance(value,bytes): p.write_bytes(value)
    else: p.write_text(value,encoding='utf-8',newline='')
def seed(name,value):
    if not (BASE/name).exists(): write(name,value)
def jwrite(name,value): write(name,json.dumps(value,ensure_ascii=False,indent=2))
def jseed(name,value):
    if not (BASE/name).exists(): jwrite(name,value)
def load(name): return json.loads((BASE/name).read_text(encoding='utf-8'))
def table(name,heads,rows):
    f=io.StringIO(newline='');w=csv.writer(f);w.writerow(heads);w.writerows(rows);write(name,f.getvalue())
def page(name,title,body):
    write(name,'<!doctype html><html lang="zh-CN"><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1"><title>'+html.escape(title)+'</title><style>body{max-width:1000px;margin:2rem auto;padding:0 1rem;font:17px/1.7 system-ui}table{border-collapse:collapse}td,th{border:1px solid #aaa;padding:.5rem}pre{white-space:pre-wrap;overflow-wrap:anywhere}img,svg{max-width:100%;height:auto}a{color:#125caa}</style><h1>'+html.escape(title)+'</h1>'+body+'</html>')
def emit(data): print(json.dumps(data,ensure_ascii=False))

from PIL import Image,ImageDraw,ImageSequence
if not (BASE/'input.gif').exists():
    frames=[]
    for i,color in enumerate(['red','green','blue']):
        im=Image.new('RGB',(64,64),'white');ImageDraw.Draw(im).rectangle((4+i*12,12,16+i*12,50),fill=color);frames.append(im)
    frames[0].save(BASE/'input.gif',save_all=True,append_images=frames[1:],duration=[100,200,400],loop=0,disposal=2)
src=Image.open(BASE/'input.gif');frames=[];durations=[]
for fr in ImageSequence.Iterator(src):
    durations.append(fr.info.get('duration',0));frames.append(fr.convert('RGBA').resize((96,96),Image.Resampling.NEAREST))
original_durations=durations.copy()
if NEG:durations=[100]*len(frames)
frames[0].save(BASE/'edited.gif',save_all=True,append_images=frames[1:],duration=durations,loop=src.info.get('loop',0),disposal=2,optimize=False)
read=Image.open(BASE/'edited.gif');actual=[fr.info.get('duration',0) for fr in ImageSequence.Iterator(read)];table('frame-timeline.csv',['frame','input_ms','output_ms'],[[i,d,actual[i] if i<len(actual) else None] for i,d in enumerate(original_durations)]);emit({'frames':read.n_frames,'durations':actual,'total_ms':sum(actual),'preserved':actual==original_durations})