import uuid
from enum import Enum
from captcha.image import ImageCaptcha
from fastapi import HTTPException

from Utils.EmailUtils import send_email
from Utils.PhoneMsgUtils import send_phone_code
from Utils.RandomUtils import get_random_num_code, get_random_letter_and_num_code
from Utils.RedisUtils import redis_pool


class EmailVerifyType(Enum):
    login = 1
    register = 2
    reset_password = 3
    change = 4


class PhoneVerifyType(Enum):
    login = 1
    register = 2
    reset_password = 3
    change = 4


class ImageCaptchaVerify:
    @classmethod
    def make_captcha_image(cls, code=None, expire_time_s: int = 120):
        captcha_id = str(uuid.uuid4())
        image = ImageCaptcha()
        if not code:
            code = get_random_letter_and_num_code(4)
        image_bytes = image.generate(code).getvalue()
        redis_pool.conn.set(captcha_id, code, expire_time_s)
        return captcha_id, image_bytes, code

    @classmethod
    def check_code(cls, captcha_id, code: str) -> bytes:
        captcha_code = redis_pool.conn.get(captcha_id)
        redis_pool.conn.delete(captcha_id)
        if captcha_code and captcha_code.lower() != code.lower():
            return False
        return True


class PhoneVerifyCode:
    @classmethod
    def get_phone_id(cls, phone, verify_type: PhoneVerifyType = PhoneVerifyType.login):
        """
        :param phone:
        :param verify_type: 不同业务验证类型对应不同的id
        :return:str
        """
        return f"{phone}_EmailVerifyCodeId_{verify_type.name}"

    @classmethod
    def make_code(cls, phone, expire_time_s=60 * 5, verify_type: PhoneVerifyType = PhoneVerifyType.login):
        client = redis_pool.get_redis_client()
        phone_id = cls.get_phone_id(phone, verify_type)
        code = get_random_num_code(4)
        client.set(phone_id, code)
        client.set(phone_id + '_sign', code)
        client.expire(phone_id + '_sign', 60)
        if expire_time_s:
            client.expire(phone_id, expire_time_s)
        return code

    @classmethod
    def send_code(cls, phone, verify_type: PhoneVerifyType):

        phone_id = cls.get_phone_id(phone, verify_type=verify_type)
        client = redis_pool.get_redis_client()
        sended = client.get(phone_id+ '_sign')
        if sended:
            raise HTTPException(status_code=303,detail="验证码已经发送成功，请一分钟后再试")
        code = cls.make_code(phone, verify_type=verify_type)
        send_phone_code(phone, code)

    @classmethod
    def check_code(cls, phone, code, verify_type: PhoneVerifyType = PhoneVerifyType.login):
        phone_id = cls.get_phone_id(phone, verify_type=verify_type)
        client = redis_pool.get_redis_client()
        phone_code = client.get(phone_id)
        return code and code == phone_code


class EmailVerifyCode:
    @classmethod
    def get_email_id(cls, email, verify_type: EmailVerifyType = EmailVerifyType.login):
        """
        :param email:
        :param verify_type: 不同业务验证类型对应不同的id
        :return:str
        """
        return f"{email}_EmailVerifyCodeId_{verify_type.name}"

    @classmethod
    def make_code(cls, email, expire_time_s=60 * 5, verify_type: EmailVerifyType = EmailVerifyType.login):
        client = redis_pool.get_redis_client()
        email_id = cls.get_email_id(email, verify_type)

        if client.get(email_id+'_sign'):
            raise HTTPException(detail='验证码已经发送，请一分钟后再试',status_code=303)

        code = get_random_num_code(4)
        client.set(email_id, code)
        client.set(email_id+"_sign", code)
        client.expire(email_id+"_sign", 60)
        if expire_time_s:
            client.expire(email_id, expire_time_s)
        return code

    @classmethod
    def send_login_code(cls, email):
        send_email("", email, "")
        pass

    @classmethod
    def send_register_code(cls, email):
        code = cls.make_code(email)
        send_email("注册验证码", email, code)
        pass

    @classmethod
    def send_rest_code(cls, email):
        code = cls.make_code(email, verify_type=EmailVerifyType.reset_password)
        send_email("密码重置验证码", email, code)
        pass

    @classmethod
    def send_change_code(cls, email):
        code = cls.make_code(email, verify_type=EmailVerifyType.change)
        send_email("日报小程序邮箱验证码", email, code)
        pass

    @classmethod
    def check_code(cls, email, code, verify_type: EmailVerifyType = EmailVerifyType.login):
        email_id = cls.get_email_id(email, verify_type)
        client = redis_pool.get_redis_client()
        email_code = client.get(email_id)
        return code and code == email_code

    @classmethod
    def remove_code(cls, email, verify_type: EmailVerifyType = EmailVerifyType.login):
        client = redis_pool.get_redis_client()
        email_id = cls.get_email_id(email)
        client.delete(email_id)