from multiprocessing.sharedctypes import Value
import uuid
from django.db import models
from django.contrib.auth.models import AbstractBaseUser,BaseUserManager
import random
import string

# Refernenced information on User (called profile model)
# https://docs.djangoproject.com/en/4.0/topics/auth/customizing/

class Enterprises(models.Model):

    title = models.CharField(max_length=25)
    address = models.CharField(max_length=50)
    email = models.EmailField(max_length=320)

    is_simulated = models.BooleanField(default = False)
    
    def __str__(self):
        return self.title

class MyUserManager(BaseUserManager):
    def create_user(self, email, username, password=None, enterprise_id = 1):
        if not email:
            raise ValueError("Lietotājam jābūt e-pastam")
        if not username:
            raise ValueError("Lietotājam jābūt lietotājvārdam")
        
        user = self.model(
            email = self.normalize_email(email),
            username = username,
        )
        user.set_password(password)
        user.save(using = self._db)
        return user
    def create_superuser(self, email, username, password, enterprise_id = 1):
        user = self.create_user(
            email = self.normalize_email(email),
            username = username,
            password = password,
            enterprise_id=enterprise_id
        )
        user.is_owner = True
        user.is_admin = True
        user.is_staff = True
        user.is_superuser = True
        user.save(using = self._db)
        return user


class Users(AbstractBaseUser):
    email = models.EmailField(verbose_name ="email", max_length = 60)
    username = models.CharField(max_length= 30, unique = True)
    date_joined = models.DateTimeField(verbose_name = "date joined", auto_now_add = True)
    last_login = models.DateTimeField(verbose_name = "last login", auto_now = True)
    is_admin = models.BooleanField(default = False)
    is_staff = models.BooleanField(default = False)
    is_superuser = models.BooleanField(default = False)
    is_active =  models.BooleanField(default = True)
    is_owner = models.BooleanField(default = False)
    # foreign keys
    enterprise = models.ForeignKey(Enterprises, on_delete=models.CASCADE, default = 1)

    USERNAME_FIELD = 'username'
    REQUIRED_FIELDS = ['email']
    objects = MyUserManager()

    def __str__(self):
        return self.username
    def has_perm(self, perm, obj = None):
        return self.is_admin
    def has_module_perms(self, app_label):
        return True
    

class TemporaryUser(models.Model):
    name = models.CharField(max_length=30)
    surname = models.CharField(max_length=30)
    email = models.EmailField(max_length=320)
    invite_time = models.DateTimeField(auto_now_add = True)
    enterprise = models.ForeignKey(Enterprises, on_delete=models.CASCADE)

    code = models.UUIDField(primary_key=False, unique=True, default=uuid.uuid4, editable=False)


    def delete_old_invite_codes(self, max_age):
        self.objects.filter(invite_time__lte = max_age).delete()