from datetime import datetime

import pytz
import requests
from django.db.models import Q
from django.views import View
from Crypto.Cipher import AES
from Crypto.Util.Padding import pad
from django.contrib.auth.hashers import check_password, make_password

from Controller.CheckUserData import DataValid
from Model.models import Device_User
from Object.RedisObject import RedisObject
from Object.ResponseObject import ResponseObject
import base64
import hmac
import hashlib
import os
import json
from Ansjer.config import SHOPIFY_CONFIG

from Service.CommonService import CommonService


class ShopifyMultipass:
    @staticmethod
    def generate_multipass_token(secret, customer_data):
        """
        使用指定的密钥对加密并签名JSON数据，返回Base64编码的Multipass令牌
        """
        # 第一步：将客户数据转换为JSON格式
        json_data = json.dumps(customer_data)

        # 第二步：生成加密密钥和签名密钥
        hash_digest = hashlib.sha256(secret.encode()).digest()
        encryption_key = hash_digest[:16]  # 128位加密密钥
        signature_key = hash_digest[16:32]  # 128位签名密钥

        # 第三步：加密JSON数据
        iv = os.urandom(16)  # 随机初始化向量
        cipher = AES.new(encryption_key, AES.MODE_CBC, iv)
        ciphertext = cipher.encrypt(pad(json_data.encode(), AES.block_size))

        # 第四步：签名加密数据
        data_to_sign = iv + ciphertext
        signature = hmac.new(signature_key, data_to_sign, hashlib.sha256).digest()

        # 第五步：Base64编码
        multipass_token = base64.urlsafe_b64encode(iv + ciphertext + signature).decode()

        return multipass_token

    @staticmethod
    def search_customer_by_email(store_name, access_token, email):
        # 设置请求URL
        url = f"https://{store_name}.myshopify.com/admin/api/2024-10/customers/search.json"
        params = {
            "query": f"email:{email}"
        }

        # 设置请求头
        headers = {
            "X-Shopify-Access-Token": access_token,
        }

        # 发送GET请求
        response = requests.get(url, headers=headers, params=params)

        # 返回响应的JSON数据
        return response.json()


class ShopifyView(View):
    def get(self, request, *args, **kwargs):
        request.encoding = 'utf-8'
        operation = kwargs.get('operation')
        request_dict = request.GET
        return self.validation(request, request_dict, operation)

    def post(self, request, *args, **kwargs):
        request.encoding = 'utf-8'
        operation = kwargs.get('operation')
        request_dict = request.POST
        return self.validation(request, request_dict, operation)

    def validation(self, request, request_dict, operation):
        language = request_dict.get('language', 'cn')
        response = ResponseObject(language)
        if operation == 'shopifyLogin':  # APP查詢定制客户信息
            return self.shopify_login(request_dict, response)
        elif operation == 'shopifyRegister':  # APP注册定制客户信息
            return self.shopify_register(request_dict, response)
        else:
            return response.json(414)

    @staticmethod
    def shopify_login(request_dict, response):
        email = request_dict.get("email", None)
        password = request_dict.get("password", None)

        if not all([email, password]):
            return response.json(444)

        user_qs = Device_User.objects.filter(Q(username=email) | Q(userEmail=email))
        if not user_qs.exists():
            return response.json(104)
        users = user_qs.values('role__rid', 'role__roleName', 'userID', 'NickName', 'username', 'userEmail',
                               'phone', 'password', 'userIconPath')[0]

        check_flag = check_password(password, users['password'])
        if not check_flag:
            return response.json(111)

        # 获取当前时间
        now = datetime.now(pytz.timezone('America/New_York'))  # 你可以根据需要更改时区

        # 格式化时间戳
        timestamp = now.strftime('%Y-%m-%dT%H:%M:%S%z')
        # 添加冒号到时区部分
        timestamp = timestamp[:-2] + ':' + timestamp[-2:]

        customer_data = {
            "email": email,
            "created_at": timestamp,
        }
        multipass_secret = SHOPIFY_CONFIG["eu_multipass_secret"]  # multipass密钥
        token = ShopifyMultipass.generate_multipass_token(multipass_secret, customer_data)

        # 构造重定向URL
        redirect_url = f"https://eu.zositech.com/account/login/multipass/{token}"

        return response.json(0, redirect_url)

    @staticmethod
    def shopify_register(request_dict, response):
        email = request_dict.get("email", None)
        password = request_dict.get("password", None)
        authcode = request_dict.get("authCode", None)

        if not all([email, password]):
            return response.json(444)

        if authcode is None:
            # 查询是否在shopify有账号
            access_token = SHOPIFY_CONFIG["eu_token"]
            customer_data = ShopifyMultipass.search_customer_by_email("0ef557-2", access_token, email)
            if not customer_data['customers']:
                return response.json(10077)

        # 邮箱验证
        else:
            reds = RedisObject()
            identifyingCode = reds.get_data(key=email + '_identifyingCode')
            # 判断验证码是否过期
            if identifyingCode is False:
                return response.json(120)
            # 验证码是否正确
            if authcode != identifyingCode:
                return response.json(121)

        # 注册
        if Device_User.objects.filter(Q(username=email) | Q(userEmail=email)).exists():
            return response.json(103)

        # 创建用户
        password = make_password(password)
        new_userID = CommonService.getUserID(μs=False, setOTAID=True)
        user_data = {
            "username": email,
            "NickName": email,
            "userEmail": email,
            "password": password,
            "userID": new_userID,
            "is_active": True,
            "user_isValid": True,
        }
        Device_User.objects.create(**user_data)

        return response.json(0)