from rest_framework import serializers
from apps.accounts.models import User, UserProfile

class UserProfileSerializer(serializers.ModelSerializer):
    """用户档案序列化器"""
    
    class Meta:
        model = UserProfile
        fields = ['department', 'group', 'auto_recommend_reply']


class UserSerializer(serializers.ModelSerializer):
    """用户序列化器"""
    profile = UserProfileSerializer(read_only=True)
    
    class Meta:
        model = User
        fields = [
            'id', 'username', 'email', 'name', 'role',
            'department', 'group', 'profile', 'is_active',
            'date_joined', 'last_login'
        ]
        read_only_fields = ['id', 'date_joined', 'last_login']


class UserCreateSerializer(serializers.ModelSerializer):
    """创建用户的序列化器"""
    password = serializers.CharField(write_only=True, required=True, style={'input_type': 'password'})
    
    class Meta:
        model = User
        fields = [
            'id', 'username', 'email', 'name', 'password',
            'role', 'department', 'group', 'is_active'
        ]
        read_only_fields = ['id']
    
    def create(self, validated_data):
        password = validated_data.pop('password')
        user = User(**validated_data)
        user.set_password(password)
        user.save()
        
        # 创建用户档案
        UserProfile.objects.create(
            user=user,
            department=user.department,
            group=user.group
        )
        
        return user


class PasswordChangeSerializer(serializers.Serializer):
    """修改密码序列化器"""
    old_password = serializers.CharField(required=True)
    new_password = serializers.CharField(required=True)
    
    def validate_old_password(self, value):
        user = self.context['request'].user
        if not user.check_password(value):
            raise serializers.ValidationError("旧密码不正确")
        return value