from django.db import models
from django.contrib.auth.models import (
  BaseUserManager, AbstractBaseUser
)
class MyUserManager(BaseUserManager):
  def create_user(self, email, name, password=None):
    """
    Creates and saves a User with the given email, date of
    birth and password.
    """
    if not email:
      raise ValueError('Users must have an email address')

    user = self.model(
      email=self.normalize_email(email),
      name=name,
    )

    user.set_password(password)
    user.save(using=self._db)
    return user

  def create_superuser(self, email, name, password):
    """
    Creates and saves a superuser with the given email, date of
    birth and password.
    """
    user = self.create_user(
      email,
      password=password,
      name=name,
    )
    user.is_admin = True
    user.save(using=self._db)
    return user

class UserProfile(AbstractBaseUser):
  '''賬號(hào)表'''
  email = models.EmailField(
    verbose_name='email address',
    max_length=255,
    unique=True,
  )
  name = models.CharField(max_length=32)
  is_active = models.BooleanField(default=True)
  is_admin = models.BooleanField(default=False)

  objects = MyUserManager()

  USERNAME_FIELD = 'email'
  REQUIRED_FIELDS = ['name']

  def __str__(self):
    return self.email

  def has_perm(self, perm, obj=None):
    "Does the user have a specific permission?"
    # Simplest possible answer: Yes, always
    return True

  def has_module_perms(self, app_label):
    "Does the user have permissions to view the app `app_label`?"
    # Simplest possible answer: Yes, always
    return True

  @property
  def is_staff(self):
    "Is the user a member of staff?"
    # Simplest possible answer: All admins are staff
    return self.is_admin

from django import forms
from django.contrib import admin
from django.contrib.auth.models import Group
from django.contrib.auth.admin import UserAdmin as BaseUserAdmin
from django.contrib.auth.forms import ReadOnlyPasswordHashField

from customauth.models import MyUser


class UserCreationForm(forms.ModelForm):
  """A form for creating new users. Includes all the required
  fields, plus a repeated password."""
  password1 = forms.CharField(label='Password', widget=forms.PasswordInput)
  password2 = forms.CharField(label='Password confirmation', widget=forms.PasswordInput)

  class Meta:
    model = MyUser
    fields = ('email', 'date_of_birth')

  def clean_password2(self):
    # Check that the two password entries match
    password1 = self.cleaned_data.get("password1")
    password2 = self.cleaned_data.get("password2")
    if password1 and password2 and password1 != password2:
      raise forms.ValidationError("Passwords don't match")
    return password2

  def save(self, commit=True):
    # Save the provided password in hashed format
    user = super().save(commit=False)
    user.set_password(self.cleaned_data["password1"])
    if commit:
      user.save()
    return user


class UserChangeForm(forms.ModelForm):
  """A form for updating users. Includes all the fields on
  the user, but replaces the password field with admin's
  password hash display field.
  """
  password = ReadOnlyPasswordHashField()

  class Meta:
    model = MyUser
    fields = ('email', 'password', 'date_of_birth', 'is_active', 'is_admin')

  def clean_password(self):
    # Regardless of what the user provides, return the initial value.
    # This is done here, rather than on the field, because the
    # field does not have access to the initial value
    return self.initial["password"]


class UserAdmin(BaseUserAdmin):
  # The forms to add and change user instances
  form = UserChangeForm
  add_form = UserCreationForm

  # The fields to be used in displaying the User model.
  # These override the definitions on the base UserAdmin
  # that reference specific fields on auth.User.
  list_display = ('email', 'date_of_birth', 'is_admin')
  list_filter = ('is_admin',)
  fieldsets = (
    (None, {'fields': ('email', 'password')}),
    ('Personal info', {'fields': ('date_of_birth',)}),
    ('Permissions', {'fields': ('is_admin',)}),
  )
  # add_fieldsets is not a standard ModelAdmin attribute. UserAdmin
  # overrides get_fieldsets to use this attribute when creating a user.
  add_fieldsets = (
    (None, {
      'classes': ('wide',),
      'fields': ('email', 'date_of_birth', 'password1', 'password2')}
    ),
  )
  search_fields = ('email',)
  ordering = ('email',)
  filter_horizontal = ()

# Now register the new UserAdmin...
admin.site.register(MyUser, UserAdmin)
# ... and, since we're not using Django's built-in permissions,
# unregister the Group model from admin.
admin.site.unregister(Group)