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from django.db import models
from django.utils.http import urlquote
from django.contrib.auth.models import (BaseUserManager,AbstractBaseUser,PermissionsMixin)
from passlib.hash import md5_crypt

class MyUserManager(BaseUserManager):
    def create_user(self,email,user_id,password=None):
        if not user_id:
            raise ValueError('The given username must be set')
        user = self.model(email = MyOaUserManager.normalize_email(email),
            user_id=user_id,is_staff=False,is_active=True,is_superuser=False)
        user.set_password(password)
        user.save(using=self._db)
        return user
    
    def create_superuser(self,email,user_id,password):
        u = self.create_user(email,user_id, password)
        u.is_staff = True
        u.is_active = True
        u.is_superuser = True
        u.save(using=self._db)
        return u

class User(AbstractBaseUser,PermissionsMixin):
    uid = models.AutoField(primary_key=True, db_column='UID') 
    user_id = models.CharField(max_length=20, unique=True, db_column='USER_ID')
    #other fields ...
    is_staff = models.BooleanField(
        verbose_name="staff status",default=False,
        help_text="Designates whether the user can log into this admin site")
    is_active = models.BooleanField(
        verbose_name="active",default=True,
        help_text="Designates whether this user should be treated as active."
        "Unselect this instead of deleting accounts.")
        
    objects = MyUserManager()
    
    USERNAME_FIELD = 'user_id'
    REQUIRED_FIELDS = ['email']
    def get_absolute_url(self):
        return "/users/%s/" %urlquote(self.user_name)
    
    def get_full_name(self):
        return self.user_id
    
    def get_short_name(self):
        return self.user_id
    
    def check_password(self,password,encoded,setter=None,preferred='default'):
        #php crypt. encoded password string as  "$1$SG2.zh..$/9IAOnUoMHEYveEbMNI.v1"
        return md5_crypt.verify(password,encoded)
    
    def make_password(self,password,salt=None,hasher='default'):
        return md5_crypt.encrypt(password)
    
    class Meta:
        app_label = 'base'
        db_table = 'user'