from django import forms
from django.contrib.auth.admin import UserAdmin
from django.contrib.auth.forms import UserChangeForm
from django.contrib.auth.forms import UsernameField
from django.utils.translation import gettext_lazy as _

# Register your models here.
from .models import BlogUser

# 用户创建表单 - 处理新用户创建时的密码验证和保存逻辑
class BlogUserCreationForm(forms.ModelForm):
    password1 = forms.CharField(label=_('password'), widget=forms.PasswordInput)# 密码字段 - 用户设置的密码输入
    password2 = forms.CharField(label=_('Enter password again'), widget=forms.PasswordInput)# 确认密码字段 - 再次输入密码用于验证一致性

    class Meta:
        model = BlogUser
        fields = ('email',)

    def clean_password2(self):# 密码验证方法 - 检查两次输入的密码是否一致
        # Check that the two password entries match
        password1 = self.cleaned_data.get("password1")
        password2 = self.cleaned_data.get("password2")# 获取两次输入的密码值
        if password1 and password2 and password1 != password2:
            raise forms.ValidationError(_("passwords do not match"))# 密码一致性检查 - 如果两次输入不一致则抛出验证错误
        return password2

    def save(self, commit=True):# 用户保存方法 - 处理密码哈希化和用户来源记录
        # Save the provided password in hashed format
        user = super().save(commit=False)
        user.set_password(self.cleaned_data["password1"])
        # 提交保存 - 设置用户来源为管理后台并保存到数据库
        if commit:
            user.source = 'adminsite'
            user.save()
        return user

# 用户修改表单 - 继承Django默认用户修改表单
class BlogUserChangeForm(UserChangeForm):
    class Meta:
        model = BlogUser
        fields = '__all__'
        field_classes = {'username': UsernameField}

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)

# 用户管理类 - 自定义用户模型在Django后台的显示和管理方式
class BlogUserAdmin(UserAdmin):
    form = BlogUserChangeForm
    add_form = BlogUserCreationForm
    list_display = (
        'id',
        'nickname',
        'username',
        'email',
        'last_login',
        'date_joined',
        'source')
    list_display_links = ('id', 'username')
    ordering = ('-id',)