# Copyright (2024) Bytedance Ltd. and/or its affiliates 
#
# This source code is licensed under the license found in the
# LICENSE file in the root directory of this source tree.

import requests
import base64
import json
import io
import os
import hashlib
import hmac
import time
import random
from PIL import Image, ImageFilter
from loguru import logger

# 接口 URL
t2i_url = 'https://magicarena.bytedance.com/api/evaluate/v1/algo/process'

#注意:正式上线环境需要不设置header
headers = {
    'X-TT-ENV': 'ppe_general_20',
    'X-USE-PPE': '1'
}

APP_KEY = os.environ['APP_KEY']
SECRET_KEY = os.environ["SECRET_KEY"]

def get_auth(app_key, secret_key):
    # 生成随机数作为 nonce
    nonce = str(random.randint(0, 2**31 - 1))
    # 获取当前时间戳
    timestamp = str(int(time.time()))
    # 调用 get_sign 函数生成签名
    sign = get_sign(nonce, timestamp, secret_key)
    return {
        "AppKey": app_key,
        "Timestamp":timestamp,
        "Nonce":nonce,
        "Sign": sign}

def get_sign(nonce, timestamp, secret_key):
    keys = [nonce, secret_key, timestamp]
    keys.sort()
    key_str = ''.join(keys)
    sha1_hash = hashlib.sha1()
    sha1_hash.update(key_str.encode('utf-8'))
    signature = sha1_hash.hexdigest()
    return signature.lower()

class SeedT2ICaller():
    def __init__(self, cfg, *args, **kwargs):
        self.cfg = cfg

    def generate(self, text, *args, **kwargs):
        try:
            logger.info("Generate images ...")
            req_json = json.dumps({
                "prompt": str(text),
                "use_sr": True,
                "model_version": "general_v2.0_L",
                "req_schedule_conf": "general_v20_9B_pe"
                # "width": 64,
                # "height": 64
            })
            authInfo = get_auth(APP_KEY, SECRET_KEY)
            logger.info(f"{req_json}")
            # 请求发送
            response = requests.post(
                t2i_url,
                headers=headers,
                data=json.dumps({
                    'AlgoType': 1,
                    'ReqJson': req_json,
                    'AuthInfo': authInfo
                })
            )
            logger.info(f"header: {response.headers}")
            if response.status_code != 200:
                return None, False
            resp = response.json()
            if resp.get('code',{}) != 0:
                logger.info(f"response error {resp}")
                return None, False

            binary_data1 = resp.get('data', {}).get('BinaryData')
            binary_data = binary_data1[0]
            #logger.info(f"binary_data: {binary_data}")
            image = Image.open(io.BytesIO(base64.b64decode(binary_data)))
            image = image.resize((self.cfg['resolution'], self.cfg['resolution']))
            return image, True
        
        except Exception as e:
            logger.exception("An error occurred during image generation.")
            return None, False

class SeedEditCaller():
    def __init__(self, cfg, *args, **kwargs):
        self.cfg = cfg

    def edit(self, image, edit, cfg_scale=0.5, *args, **kwargs):
        try:
            image_bytes = io.BytesIO()
            image.save(image_bytes, format='JPEG')  # 或 format='PNG'
            logger.info("Edit images ...")
            req_json = json.dumps({
                "prompt": str(edit),
                "model_version": "byteedit_v2.0",
                "scale": cfg_scale,
            })
            logger.info(f"{req_json}")
            binary =base64.b64encode(image_bytes.getvalue()).decode('utf-8')
            # 请求发送
            response = requests.post(
                t2i_url,
                headers=headers,
                data=json.dumps({
                    'AlgoType': 2,
                    'ReqJson': req_json,
                    'BinaryData': [binary],
                    'AuthInfo': get_auth(APP_KEY, SECRET_KEY)
                })
            )

            logger.info(f"header: {response.headers}")
            if response.status_code != 200:
                return None, False
            resp = response.json()
            if resp.get('code',{}) != 0:
                logger.info(f"response error {resp}")
                return None, False

            binary_data = resp.get('data', {}).get('BinaryData')
            image = Image.open(io.BytesIO(base64.b64decode(binary_data[0])))
            return image, True

        except Exception as e:
            logger.exception("An error occurred during image generation.")
            return None, False



if __name__ == "__main__":
    cfg_t2i = {
        "resolution": 611
    }
    model_t2i = SeedT2ICaller(cfg_t2i)
    image, _ = model_t2i.generate("a beautiful girl")
    model_edit = SeedEditCaller(cfg_t2i)
    model_edit.edit(image, edit="please edit to a good man")