#!/usr/bin/env python3
"""LibLibAI ComfyUI Workflow Runner

用法:
    python liblibai_comfyui_runner.py workflow.json
    python liblibai_comfyui_runner.py workflow.json --output result.png
"""

import argparse
import base64
import hashlib
import hmac
import json
import os
import sys
import time
import uuid
from pathlib import Path

import requests
from dotenv import load_dotenv

load_dotenv()

DOMAIN = os.getenv("LIBLIBAI_DOMAIN", "https://openapi.liblibai.cloud")
ACCESS_KEY = os.getenv("LIBLIBAI_ACCESS_KEY")
SECRET_KEY = os.getenv("LIBLIBAI_SECRET_KEY")
DEFAULT_TEMPLATE = "4df2efa0f18d46dc9758803e478eb51c"


def generate_auth_url(uri: str) -> str:
    """生成带 HMAC-SHA1 签名的完整 URL"""
    ts = str(int(time.time() * 1000))
    nonce = uuid.uuid4().hex
    sign_str = f"{uri}&{ts}&{nonce}"
    dig = hmac.new(SECRET_KEY.encode(), sign_str.encode(), hashlib.sha1).digest()
    signature = base64.urlsafe_b64encode(dig).rstrip(b"=").decode()
    return f"{DOMAIN}{uri}?AccessKey={ACCESS_KEY}&Timestamp={ts}&SignatureNonce={nonce}&Signature={signature}"


def submit_workflow(workflow_data: dict) -> str:
    """提交 ComfyUI workflow 生图任务"""
    uri = "/api/generate/comfyui/app"
    url = generate_auth_url(uri)

    payload = {
        "templateUuid": DEFAULT_TEMPLATE,
        "generateParams": workflow_data
    }

    print(f"提交任务...")
    resp = requests.post(url, json=payload, headers={"Content-Type": "application/json"})
    resp.raise_for_status()

    data = resp.json()
    if data.get("code") != 0:
        raise Exception(f"提交失败: {data.get('msg', 'unknown error')}")

    generate_uuid = data["data"]["generateUuid"]
    print(f"任务 ID: {generate_uuid}")
    return generate_uuid


def poll_result(generate_uuid: str, timeout: int = 600) -> dict:
    """轮询任务结果"""
    uri = "/api/generate/comfy/status"
    url = generate_auth_url(uri)

    start_time = time.time()
    print(f"轮询结果 (超时 {timeout}s)...")

    while time.time() - start_time < timeout:
        resp = requests.post(url, json={"generateUuid": generate_uuid})
        resp.raise_for_status()

        data = resp.json()
        if data.get("code") != 0:
            raise Exception(f"查询失败: {data.get('msg', 'unknown error')}")

        result = data["data"]
        status = result["generateStatus"]

        # 1=等待 2=执行中 3=已生图 4=审核中 5=成功 6=失败
        if status in [1, 2, 3, 4]:
            status_text = {1: "等待", 2: "执行中", 3: "已生图", 4: "审核中"}[status]
            print(f"  状态: {status_text}  进度: {result.get('percentCompleted', 0):.0%}")
            time.sleep(5)
            continue

        if status == 5:
            print(f"✓ 任务成功")
            print(f"  消耗积分: {result.get('pointsCost', 0)}")
            print(f"  剩余积分: {result.get('accountBalance', 0)}")
            return result

        if status == 6:
            raise Exception(f"任务失败: {result.get('generateMsg', 'unknown')}")

    raise TimeoutError(f"轮询超时 ({timeout}s)")


def save_results(result: dict, output_dir: Path):
    """保存生成的图片和视频"""
    output_dir.mkdir(parents=True, exist_ok=True)

    images = result.get("images", [])
    videos = result.get("videos", [])

    print(f"\n生成结果:")
    print(f"  图片: {len(images)} 张")
    print(f"  视频: {len(videos)} 个")

    for i, img in enumerate(images):
        if img.get("auditStatus") != 3:
            print(f"  图片 {i+1}: 审核未通过 (status={img.get('auditStatus')})")
            continue

        url = img["imageUrl"]
        filename = f"image_{i+1}.png"
        filepath = output_dir / filename

        print(f"  下载: {filename}")
        resp = requests.get(url)
        resp.raise_for_status()
        filepath.write_bytes(resp.content)
        print(f"    -> {filepath}")

    for i, vid in enumerate(videos):
        if vid.get("auditStatus") != 3:
            print(f"  视频 {i+1}: 审核未通过 (status={vid.get('auditStatus')})")
            continue

        url = vid["videoUrl"]
        filename = f"video_{i+1}.mp4"
        filepath = output_dir / filename

        print(f"  下载: {filename}")
        resp = requests.get(url)
        resp.raise_for_status()
        filepath.write_bytes(resp.content)
        print(f"    -> {filepath}")


def main():
    parser = argparse.ArgumentParser(description="LibLibAI ComfyUI Workflow Runner")
    parser.add_argument("workflow", help="workflow JSON 文件路径")
    parser.add_argument("--output", "-o", default="output", help="输出目录，默认 output/")
    parser.add_argument("--timeout", "-t", type=int, default=600, help="轮询超时秒数，默认 600")
    args = parser.parse_args()

    if not ACCESS_KEY or not SECRET_KEY:
        print("ERROR: 请设置环境变量 LIBLIBAI_ACCESS_KEY 和 LIBLIBAI_SECRET_KEY")
        sys.exit(1)

    workflow_path = Path(args.workflow)
    if not workflow_path.exists():
        print(f"ERROR: 文件不存在: {workflow_path}")
        sys.exit(1)

    print(f"加载 workflow: {workflow_path}")
    with open(workflow_path, "r", encoding="utf-8") as f:
        workflow_data = json.load(f)

    try:
        generate_uuid = submit_workflow(workflow_data)
        result = poll_result(generate_uuid, timeout=args.timeout)
        save_results(result, Path(args.output))
        print("\n✓ 完成")
    except Exception as e:
        print(f"\n✗ 错误: {e}")
        sys.exit(1)


if __name__ == "__main__":
    main()