"""
Admin registry file
"""
from django.contrib import admin
from django.contrib.auth.forms import ReadOnlyPasswordHashField
from django.contrib.auth.models import Group
from django import forms
from .models import User


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:
        """
        Meta class definitions
        """
        model = User
        fields = ('email', 'age', 'name')

    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(label=("Password"),
                     help_text=("Raw passwords are not stored, so there is no way to see "
                                "this user's password, but you can change the password "
                                "using <a href=\"password/\">this form</a>."))

    class Meta:
        """
        Meta class definitions
        """
        model = User
        fields = ('email', 'age', 'name','password')

    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 CustomUserAdmin(admin.ModelAdmin):
    """
    Custom user model admin class
    """
    # The forms to add and change user instances
    form = UserChangeForm
    add_form = UserCreationForm
    model = User
    # 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', 'name', 'age', 'is_superuser')
    list_filter = ('is_superuser',)
    fieldsets = (
        (None, {'fields': ('email', 'password')}),
        ('Personal info', {'fields': ('name','age')}),
    )
    add_fieldsets = (
        (None, {
            'classes': ('wide',),
            'fields': ('email', 'name','age', 'password1', 'password2')}
         ),
    )
    search_fields = ('email',)
    ordering = ('email',)
    filter_horizontal = ()

    def get_fieldsets(self, request, obj=None):
        """
        Get differents fieldset depends on exists or not object
        """
        if not obj:
            return self.add_fieldsets
        return self.fieldsets

    def get_form(self, request, obj=None, change=False, **kwargs):
        """
        Get differents forms depends on exists or not object
        """
        if not obj:
            return self.add_form
        return self.form


admin.site.register(User, CustomUserAdmin)
admin.site.unregister(Group)