# authentication/views.py

from django.contrib.auth.models import User
from django.contrib.auth import authenticate
from django.http import JsonResponse
from rest_framework.views import APIView
from django.views.decorators.csrf import csrf_exempt
import json
from rest_framework_simplejwt.tokens import RefreshToken
from rest_framework.permissions import IsAuthenticated, AllowAny
from django.core.mail import send_mail
import random
import requests
from django.utils import timezone
from datetime import timedelta
from .models import UserData
import uuid

# In-memory storage for OTPs (use a persistent storage in production)
OTP_STORAGE = {}


class RegisterView(APIView):
    permission_classes = [AllowAny]

    def post(self, request):
        try:
            data = json.loads(request.body)
            email = data.get('email')
            password = data.get('password')
            first_name = data.get('first_name')
            last_name = data.get('last_name')
            phone = data.get('phone')
            birthDate = data.get('birthDate')
            gender = data.get('gender', 'male')
            streetName = data.get('streetName')
            city = data.get('city')
            state = data.get('state')
            country = data.get('country')
            pincode = data.get('pincode')
            getUpdates = data.get('getUpdates', False)
            birthDate = birthDate.split('T')[0]

            if User.objects.filter(email=email).exists():
                return JsonResponse({'error': 'Email already exists'}, status=400)

            user = User.objects.create_user(
                username=email,
                email=email,
                password=password,
                first_name=first_name,
                last_name=last_name
            )
            user.save()

            userDataObj = UserData.objects.create(
                user=user,
                phone=phone,
                refCode=phone,
                birthDate=birthDate,
                gender=gender,
                streetName=streetName,
                city=city,
                state=state,
                country=country,
                pincode=pincode,
                isSubscribed=getUpdates
            )

            otp = random.randint(100000, 999999)
            OTP_STORAGE[email] = {
                'otp': otp,
                'expires_at': timezone.now() + timedelta(minutes=10)  # OTP valid for 10 minutes
            }
            print(otp)
            # Send OTP via email
            # send_mail(
            #     'Password Reset OTP',
            #     f'Your OTP for password reset is {otp}',
            #     'noreply@example.com',  # Replace with your email
            #     [email],
            #     fail_silently=False,
            # )

            # Add user to Revel system
            revel_payload = json.dumps({
                "accept_checks": False,
                "account_balance": None,
                "account_limit": None,
                "active": True,
                "address": streetName,
                "birth_date": birthDate,
                "cc_exp": "03/22",
                "cc_first_name": first_name,
                "cc_last_name": last_name,
                "cc_last_4_digits": "1111",
                "city": city,
                "company_name": "B-Company",
                # "contract_expiration": "2019-05-16T00:00:00",
                "created_by": "/enterprise/User/9393/",
                "created_date": timezone.now().isoformat(),
                "customer_groups": [],
                "deleted": False,
                "discount": 0,
                "email": email,
                "email_opt_in": getUpdates,
                # "exp_date": "1919-05-16T00:00:00",
                "expensify_account": f'{{"{email}":["193"]}}',
                "first_name": first_name,
                "gender": 0 if gender.lower() == 'male' else 1,
                "gift_card_numbers": [],
                "is_visitor": False,
                "last_name": last_name,
                "lic_number": "EAK173",
                "loyalty_number": None,
                "loyalty_ref_id": "",
                "notes": "New Customer",
                "ok_to_email": False,
                "past_due": 0,
                "phone_number": phone,
                "phone_opt_in": getUpdates,
                "pin": "",
                "post_opt_in": False,
                "ref_number": "1731-147709",
                "reward_card_numbers": [],
                "source": None,
                "state": state,
                "tax_exempt": False,
                # "tax_location": "CA Orange County",
                # "third_party_id": "1731147709",
                "title": "Mr" if gender == "male" else "Ms",
                "total_purchases": 0,
                "total_visits": 0,
                "track_as_company": True,
                "type": 1,
                "updated_by": "/enterprise/User/9393/",
                "updated_date": timezone.now().isoformat(),
                "uuid": uuid.uuid4().hex,
                "vehicles": [],
                "version_date": timezone.now().isoformat(),
                "zipcode": pincode
            })
            revel_headers = {
                'content-type': 'application/json',
                'API-AUTHENTICATION': 'fab57498544244e38bfc2741880f8d61:ed9628295b0642e1b38308795c9cdadd58012df4ceb84a3b9d441c017a1eeac0'
            }
            revel_response = requests.post("https://101smokeshop-uat.revelup.com/resources/Customer/", headers=revel_headers, data=revel_payload)
            # print(revel_response.json())

            userDataObj.revelId = revel_response.json()['id']
            userDataObj.save()
            refresh = RefreshToken.for_user(user)
            userData = {}
            userData['email'] = user.email
            userData['first_name'] = user.first_name
            userData['last_name'] = user.last_name
            userData['access'] = str(refresh.access_token)
            userData['refresh'] = str(refresh)
            userData["phone"] = userDataObj.phone
            userData["refCode"] = userDataObj.refCode
            userData["birthDate"] = userDataObj.birthDate
            userData["gender"] = userDataObj.gender
            userData["streetName"] = userDataObj.streetName
            userData["city"] = userDataObj.city
            userData["state"] = userDataObj.state
            userData["country"] = userDataObj.country
            userData["pincode"] = userDataObj.pincode
            userData["rewardPoints"] = userDataObj.rewardPoints
            userData["isVerified"] = userDataObj.isVerified
            userData["isSubscribed"] = userDataObj.isSubscribed
            userData["isBlocked"] = userDataObj.isBlocked
            userData["isDeleted"] = userDataObj.isDeleted
            return JsonResponse(userData, status=200)
        except Exception as e:
            print(e)
            return JsonResponse({'error': str(e)}, status=400)


class LoginView(APIView):
    permission_classes = [AllowAny]

    def post(self, request):
        try:
            data = json.loads(request.body)
            username = data.get('username')
            password = data.get('password')

            user = authenticate(username=username, password=password)
            if user is not None:
                refresh = RefreshToken.for_user(user)
                userDataObj = UserData.objects.get(user=user)
                userData = {}
                userData['email'] = user.email
                userData['first_name'] = user.first_name
                userData['last_name'] = user.last_name
                userData['access'] = str(refresh.access_token)
                userData['refresh'] = str(refresh)
                userData["phone"] = userDataObj.phone
                userData["refCode"] = userDataObj.refCode
                userData["birthDate"] = userDataObj.birthDate
                userData["gender"] = userDataObj.gender
                userData["streetName"] = userDataObj.streetName
                userData["city"] = userDataObj.city
                userData["state"] = userDataObj.state
                userData["country"] = userDataObj.country
                userData["pincode"] = userDataObj.pincode
                userData["rewardPoints"] = userDataObj.rewardPoints
                userData["isVerified"] = userDataObj.isVerified
                userData["isSubscribed"] = userDataObj.isSubscribed
                userData["isBlocked"] = userDataObj.isBlocked
                userData["isDeleted"] = userDataObj.isDeleted
                return JsonResponse(userData, status=200)
            else:
                return JsonResponse({'error': 'Invalid credentials'}, status=401)
        except Exception as e:
            print(e)
            return JsonResponse({'error': str(e)}, status=400)


class UserDetailView(APIView):
    permission_classes = [IsAuthenticated]

    def get(self, request):
        user = request.user
        refresh = RefreshToken.for_user(user)
        userDataObj = UserData.objects.get(user=user)
        userData = {}
        userData['email'] = user.email
        userData['access'] = str(refresh.access_token)
        userData['refresh'] = str(refresh)
        userData['first_name'] = user.first_name
        userData['last_name'] = user.last_name
        userData["phone"] = userDataObj.phone
        userData["refCode"] = userDataObj.refCode
        userData["birthDate"] = userDataObj.birthDate
        userData["gender"] = userDataObj.gender
        userData["streetName"] = userDataObj.streetName
        userData["city"] = userDataObj.city
        userData["state"] = userDataObj.state
        userData["country"] = userDataObj.country
        userData["pincode"] = userDataObj.pincode
        userData["rewardPoints"] = userDataObj.rewardPoints
        userData["isVerified"] = userDataObj.isVerified
        userData["isSubscribed"] = userDataObj.isSubscribed
        userData["isBlocked"] = userDataObj.isBlocked
        userData["isDeleted"] = userDataObj.isDeleted
        return JsonResponse(userData, status=200)

    def post(self, request):
        try:
            user = request.user
            userDataObj = UserData.objects.get(user=user)
            data = json.loads(request.body)
            user.email = data.get('email', user.email)
            user.first_name = data.get('first_name', user.first_name)
            user.last_name = data.get('last_name', user.last_name)
            userDataObj.phone = data.get('phone', userDataObj.phone)
            userDataObj.refCode = data.get('phone', userDataObj.phone)
            userDataObj.birthDate = data.get('birthDate', userDataObj.birthDate).split('T')[0]
            userDataObj.gender = data.get('gender', userDataObj.gender)
            userDataObj.streetName = data.get('streetName', userDataObj.streetName)
            userDataObj.city = data.get('city', userDataObj.city)
            userDataObj.state = data.get('state', userDataObj.state)
            userDataObj.country = data.get('country', userDataObj.country)
            userDataObj.pincode = data.get('pincode', userDataObj.pincode)
            user.save()
            userDataObj.save()
            userData = {}
            refresh = RefreshToken.for_user(user)
            userData['email'] = user.email
            userData['access'] = str(refresh.access_token)
            userData['refresh'] = str(refresh)
            userData['first_name'] = user.first_name
            userData['last_name'] = user.last_name
            userData["phone"] = userDataObj.phone
            userData["refCode"] = userDataObj.refCode
            userData["birthDate"] = userDataObj.birthDate
            userData["gender"] = userDataObj.gender
            userData["streetName"] = userDataObj.streetName
            userData["city"] = userDataObj.city
            userData["state"] = userDataObj.state
            userData["country"] = userDataObj.country
            userData["pincode"] = userDataObj.pincode
            userData["rewardPoints"] = userDataObj.rewardPoints
            userData["isVerified"] = userDataObj.isVerified
            userData["isSubscribed"] = userDataObj.isSubscribed
            userData["isBlocked"] = userDataObj.isBlocked
            userData["isDeleted"] = userDataObj.isDeleted
            return JsonResponse({'message': 'User data updated successfully', "data": userData}, status=200)
        except Exception as e:
            return JsonResponse({'error': str(e)}, status=400)


class LogoutView(APIView):
    permission_classes = [IsAuthenticated]

    def post(self, request):
        refresh_token = request.data.get('refresh')
        if not refresh_token:
            return JsonResponse({
                'error': 'Refresh token is required',
                'status': 'error'
            }, status=400)
        else:
            try:
                refresh = RefreshToken(refresh_token)
                refresh.blacklist()
                return JsonResponse({
                    'status': 'success',
                    'message': 'Successfully logged out'
                })
            except:
                return JsonResponse({
                    "error": "Invalid token",
                    "status": "error"
                }, status=400)


class RequestPasswordResetView(APIView):
    authentication_classes = ()
    permission_classes = ()  # Allow any

    def post(self, request):
        try:
            data = json.loads(request.body)
            email = data.get('email')
            if not email:
                return JsonResponse({'error': 'Email is required'}, status=400)
            try:
                user = User.objects.get(email=email)
            except User.DoesNotExist:
                return JsonResponse({'error': 'User with this email does not exist'}, status=400)

            # Generate OTP
            otp = random.randint(100000, 999999)
            OTP_STORAGE[email] = {
                'otp': otp,
                'expires_at': timezone.now() + timedelta(minutes=10)  # OTP valid for 10 minutes
            }
            print(otp)
            # Send OTP via email
            send_mail(
                'Password Reset OTP',
                f'Your OTP for password reset is {otp}',
                'noreply@example.com',  # Replace with your email
                [email],
                fail_silently=False,
            )

            return JsonResponse({'message': 'OTP sent to email'}, status=200)
        except Exception as e:
            return JsonResponse({'error': str(e)}, status=400)


class ResendOTPView(APIView):
    authentication_classes = ()
    permission_classes = ()  # Allow any

    def post(self, request):
        try:
            data = json.loads(request.body)
            email = data.get('email')
            if not email:
                return JsonResponse({'error': 'Email is required'}, status=400)
            try:
                user = User.objects.get(email=email)
            except User.DoesNotExist:
                return JsonResponse({'error': 'User with this email does not exist'}, status=400)

            # Generate new OTP
            otp = random.randint(100000, 999999)
            OTP_STORAGE[email] = {
                'otp': otp,
                'expires_at': timezone.now() + timedelta(minutes=10)  # OTP valid for 10 minutes
            }
            print(otp)
            # Send OTP via email
            send_mail(
                'Password Reset OTP',
                f'Your new OTP for password reset is {otp}',
                'noreply@example.com',  # Replace with your email
                [email],
                fail_silently=False,
            )

            return JsonResponse({'message': 'OTP resent to email'}, status=200)
        except Exception as e:
            return JsonResponse({'error': str(e)}, status=400)


class ResetPasswordView(APIView):
    authentication_classes = ()
    permission_classes = ()  # Allow any

    def post(self, request):
        try:
            data = json.loads(request.body)
            email = data.get('email')
            otp = data.get('otp')
            new_password = data.get('new_password')

            if not all([email, otp, new_password]):
                return JsonResponse({'error': 'All fields are required'}, status=400)

            otp_record = OTP_STORAGE.get(email)
            if not otp_record:
                return JsonResponse({'error': 'OTP not found. Please request a new one.'}, status=400)

            if timezone.now() > otp_record['expires_at']:
                del OTP_STORAGE[email]
                return JsonResponse({'error': 'OTP has expired. Please request a new one.'}, status=400)

            if int(otp) != otp_record['otp']:
                return JsonResponse({'error': 'Invalid OTP'}, status=400)

            try:
                user = User.objects.get(email=email)
            except User.DoesNotExist:
                return JsonResponse({'error': 'User with this email does not exist'}, status=400)

            user.set_password(new_password)
            user.save()

            # Remove OTP after successful reset
            del OTP_STORAGE[email]

            return JsonResponse({'message': 'Password reset successful'}, status=200)
        except Exception as e:
            return JsonResponse({'error': str(e)}, status=400)


class refreshTokenView(APIView):
    def post(self, request):
        try:
            data = json.loads(request.body)
            refresh = data.get('refresh')
            token = RefreshToken(refresh)
            access = str(token.access_token)
            return JsonResponse({'access': access}, status=200)
        except Exception as e:
            return JsonResponse({'error': str(e)}, status=400)