# .Model.py

from tortoise import fields, models
from passlib.context import CryptContext
from App.Android.Android import AndroidClient
from App.Android.Schema import RegisterUserRequest as AndroidRegister
from App.Templates.Templates import MessageTemplate
from App.Subscriptions.Model import Subscription
from App.Plans.Model import Plan
from .Constants import UserType
import datetime
import uuid
import random
import string
from typing import Optional
from decimal import Decimal
import logging

# Configure logging
logger = logging.getLogger(__name__)
logger.setLevel(logging.INFO)
handler = logging.StreamHandler()
formatter = logging.Formatter("%(asctime)s - %(name)s - %(levelname)s - %(message)s")
handler.setFormatter(formatter)
logger.addHandler(handler)

# Password hashing context
pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")


def generate_short_uuid() -> str:
    """Generates a random 5-character alphanumeric ID."""
    return "".join(random.choices(string.ascii_letters + string.digits, k=5))


class User(models.Model):
    id = fields.CharField(primary_key=True, max_length=5, default=generate_short_uuid)
    name = fields.CharField(max_length=100)
    password = fields.CharField(max_length=100)  # Stores hashed password
    user_type = fields.IntField(default=UserType.USER)
    phoneNumber = fields.CharField(max_length=15, unique=True)
    balance = fields.DecimalField(max_digits=10, decimal_places=2, default=0.00)
    mac_address = fields.CharField(max_length=17)
    createdAt = fields.DatetimeField(auto_now_add=True)
    updatedAt = fields.DatetimeField(auto_now=True)
    lastLogin = fields.DatetimeField(default=datetime.datetime.now)
    failed_attempts = fields.IntField(default=0)

    account_locked = fields.BooleanField(default=False)
    reset_token = fields.CharField(max_length=6, null=True, unique=True)
    reset_token_expiration = fields.DatetimeField(null=True)

    class Meta:
        table = "users"

    # Initialize AndroidClient and MessageTemplate as class variables
    android_client = AndroidClient()
    message_templates = MessageTemplate()

    def hash_password(self, plain_password: str) -> str:
        """Hashes a plain password."""
        return pwd_context.hash(plain_password)

    async def send_message(self, message: str):
        try:
            await self.android_client.send_message(
                phone_numbers=self.phoneNumber, message=message
            )
            logger.info(f"Welcome message sent to {self.phoneNumber}.")
        except Exception as e:
            logger.error(f"Failed to send welcome message to {self.phoneNumber}: {e}")

    async def verify_password(self, plain_password: str) -> bool:
        """
        Verifies a plain password against the hashed password.
        Handles account locking after multiple failed attempts.
        """
        if (
            self.account_locked
            and datetime.datetime.now()
            < self.lastLogin + datetime.timedelta(minutes=15)
        ):
            logger.warning(
                f"Account {self.phoneNumber} is locked due to too many failed attempts."
            )
            return False

        if pwd_context.verify(plain_password, self.password):
            self.failed_attempts = 0
            self.account_locked = False
            self.lastLogin = datetime.datetime.now()
            await self.save()
            return True
        else:
            self.failed_attempts += 1
            if self.failed_attempts >= 5:
                self.account_locked = True
                logger.warning(f"Account {self.phoneNumber} has been locked.")
            await self.save()
            return False

    async def toggle_status(self):
        if self.account_locked:
            await self.activate_user()
            self.account_locked = False
        else:
            await self.deactivate_user()
            self.account_locked = True
        # self.account_locked = not self.account_locked
        await self.save()

    async def initiate_password_reset(self):
        """Generates a reset token and sends it to the user via message."""
        self.reset_token = f"{random.randint(100000, 999999)}"
        self.reset_token_expiration = datetime.datetime.now() + datetime.timedelta(
            minutes=15
        )
        await self.save()
        await self.send_reset_token_message()

    async def reset_password(self, reset_token: str, new_password: str) -> bool:
        """
        Resets the user's password if the provided token is valid and not expired.
        Sends a confirmation message upon successful reset.
        """
        if (
            self.reset_token != reset_token
            or datetime.datetime.now() > self.reset_token_expiration
        ):
            logger.error(f"Invalid or expired reset token for user {self.phoneNumber}.")
            return False
        self.password = self.hash_password(new_password)
        self.reset_token = None
        self.reset_token_expiration = None
        await self.save()
        await self.send_password_reset_confirmation()
        return True

    @classmethod
    async def create_user(cls, user_data: dict) -> models.Model:
        """
        Creates a new user, registers with AndroidClient, and sends a welcome message.
        """
        try:
            # Hash the plain password
            plain_password = user_data.get("password")
            if not plain_password:
                logger.error("Password not provided during user creation.")
                raise ValueError("Password is required.")
            hashed_password = pwd_context.hash(plain_password)
            user_data["password"] = hashed_password

            # Register with AndroidClient
            register_request = AndroidRegister(
                password=plain_password,  # Assuming AndroidClient expects plain password
                phoneNumber=user_data["phoneNumber"],
            )
            try:
                response = await cls.android_client.register_user(
                    request=register_request
                )
                logger.info(
                    f"AndroidClient register_user response for {user_data['phoneNumber']}: {response}"
                )
            except Exception as e:
                logger.error(
                    f"Failed to register user with AndroidClient for {user_data['phoneNumber']}: {e}"
                )
                logger.error(f"Error creating user: {e}")
                raise e
            new_user = await cls.create(**user_data)
            logger.info(f"User {new_user.phoneNumber} created successfully.")
            await new_user.send_welcome_message()
            # if there is a promotion and activate the user
            promo_plans = await Plan.filter(is_promo=True).all()
            for promo_plan in promo_plans:
                plan_valid = await promo_plan.is_promo_valid()
                if plan_valid:
                    await new_user.create_subscription(
                        plan=promo_plan, send_message=True
                    )
                    await new_user.activate_user()
                    break

            # Create the user in the database

            # Decide whether to rollback user creation or proceed
            # For simplicity, we'll proceed

            return new_user
        except Exception as e:
            logger.error(f"Error creating user: {e}")
            raise e

    async def send_plan_subscription_message(self, plan: Plan, expiration_time):
        message = self.message_templates.subscription_created_message(
            expiration_time=expiration_time, plan_name=plan.name
        )
        await self.send_message(message=message)

    async def create_subscription(self, plan: Plan, send_message=False):
        expiration_time = datetime.datetime.now() + datetime.timedelta(
            hours=plan.duration
        )
        # Create the subscription
        await Subscription.create(
            user=self,
            duration=plan.duration,
            download_mb=plan.download_speed * 1024,
            upload_mb=plan.upload_speed * 1024,
            created_time=datetime.datetime.now(),
            expiration_time=expiration_time,
            active=True,
        )
        await self.activate_user()
        if send_message:
            await self.send_plan_subscription_message(
                plan=plan, expiration_time=expiration_time
            )

    async def send_welcome_message(self):
        """Sends a welcome message to the user."""
        message = self.message_templates.registration_message(user_name=self.name)
        await self.send_message(message=message)

    async def send_reset_token_message(self):
        """Sends the reset token to the user's phone number."""
        message = self.message_templates.reset_token_message(token=self.reset_token)
        try:
            await self.android_client.send_message(
                phone_numbers=self.phoneNumber, message=message
            )
            logger.info(f"Reset token sent to {self.phoneNumber}.")
        except Exception as e:
            logger.error(f"Failed to send reset token to {self.phoneNumber}: {e}")

    async def send_password_reset_confirmation(self):
        """Sends a confirmation message after a successful password reset."""
        message = self.message_templates.password_reset_confirmation_message()
        try:
            await self.android_client.send_message(
                phone_numbers=self.phoneNumber, message=message
            )
            logger.info(f"Password reset confirmation sent to {self.phoneNumber}.")
        except Exception as e:
            logger.error(
                f"Failed to send password reset confirmation to {self.phoneNumber}: {e}"
            )

    async def toggle_account_status(self):
        """Toggles the user's account status and sends a notification message."""
        self.account_locked = not self.account_locked
        await self.save()
        if self.account_locked:
            message = self.message_templates.account_disabled_message()
            logger.info(f"Account {self.phoneNumber} has been locked.")
        else:
            message = self.message_templates.account_enabled_message()
            logger.info(f"Account {self.phoneNumber} has been unlocked.")

        try:
            await self.android_client.send_message(
                phone_numbers=self.phoneNumber, message=message
            )
            logger.info(f"Account status message sent to {self.phoneNumber}.")
        except Exception as e:
            logger.error(
                f"Failed to send account status message to {self.phoneNumber}: {e}"
            )

    async def send_payment_success_message(
        self, amount: Decimal, plan_name: Optional[str] = None
    ):
        """
        Sends a payment success message to the user.
        If a plan is associated, it includes subscription details.
        """
        if plan_name:
            message = self.message_templates.payment_success_subscription_message(
                user_name=self.name, amount=amount, plan_name=plan_name
            )
        else:
            message = self.message_templates.balance_assigned_message(
                amount=amount, new_balance=self.balance
            )
        try:
            await self.android_client.send_message(
                phone_numbers=self.phoneNumber, message=message
            )
            logger.info(f"Payment success message sent to {self.phoneNumber}.")
        except Exception as e:
            logger.error(
                f"Failed to send payment success message to {self.phoneNumber}: {e}"
            )

    async def send_insufficient_funds_message(
        self, required_amount: Decimal, attempted_amount: Decimal
    ):
        """
        Sends a message to the user indicating insufficient funds for the attempted payment.
        """
        message = self.message_templates.insufficient_funds_message(
            user_name=self.name,
            required_amount=required_amount,
            attempted_amount=attempted_amount,
        )
        try:
            await self.android_client.send_message(
                phone_numbers=self.phoneNumber, message=message
            )
            logger.info(f"Insufficient funds message sent to {self.phoneNumber}.")
        except Exception as e:
            logger.error(
                f"Failed to send insufficient funds message to {self.phoneNumber}: {e}"
            )

    async def activate_user(self):
        """Activate the user using the Android client."""
        try:
            response = await self.android_client.activate_user(self.phoneNumber)
            if response.get("status") == "success":
                logger.info(f"User {self.phoneNumber} activated successfully.")
                self.account_locked = False  # Assuming activation unlocks the account
                await self.save()
                return True
            else:
                logger.error(
                    f"Failed to activate user {self.phoneNumber}: {response.get('message')}"
                )
                return False
        except Exception as e:
            logger.error(f"Error activating user {self.phoneNumber}: {str(e)}")
            return False

    async def deactivate_user(self):

        await self.remover_user_session()

        try:
            await self.android_client.deactivate_user(self.phoneNumber)
        except Exception as e:
            logger.error(f"Failed to deactivate user {self.phoneNumber}: {e}")
            raise e  # Raise the error after logging

    async def send_subcription_expired_message(self, plan: Plan):
        try:
            message = self.message_templates.subscription_expired_message(
                user_name=self.name, plan_name=plan.name
            )
            await self.send_message(message=message)
            logger.info(f"Subscription expired message sent to {self.phoneNumber}.")
        except Exception as e:
            logger.error(
                f"Failed to send subscription expired message to {self.phoneNumber}: {e}"
            )
            raise e

    async def is_active(self):
        try:
            return await self.android_client.is_user_active(self.phoneNumber)
        except Exception as e:
            raise e

    async def remover_user_session(self):
        try:
            await self.android_client.remove_session(self.phoneNumber)
        except Exception as e:
            logger.error(f"Failed to remove session for {self.phoneNumber}: {e}")
            raise e  #  Raise the error after logging