from django import forms
from django.contrib.auth.forms import AuthentificationForm, UserCreationForm
from users.models import User
import re

class RegisterForm(UserCreationForm):
    username = forms.CharField(label="Логин", widget=forms.TextInput(attrs={"class": "form-control", "placeholder": "Введите логин"}))
    full_name = forms.CharField(label="ФИО", widget=forms.TextInput(attrs={"class": "form-control", "placeholder": "Введите ФИО"}))
    phone = forms.CharField(label="Номер телефона", widget=forms.TextInput(attrs={"class": "form-control", "placeholder": "8(900)000-00-00"}))
    email = forms.CharField(label="Электронная почта", widget=forms.EmailInput(attrs={"class": "form-control", "placeholder": "Введите email"}))
    password1 = forms.CharField(label="Пароль", widget=forms.PasswordInput(attrs={"class": "form-control", "placeholder": "Введите пароль"}))
    password2 = forms.CharField(label="Подтверждение пароля", widget=forms.PasswordInput(attrs={"class": "form-control", "placeholder": "Подтвердите пароль"}))

    class Meta:
        model = User
        fields = ["username", "full_name", "phone", "email", "password1", "password2", "role", "is_staff"]


    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        for field in self.fields.values():
            field.help_text = ""
    
    def clean_username(self):
        username = self.cleaned_data["username"]
        if not re.fullmatch(r"[A-Za-z0-9]{6, }"):
            raise forms.ValidationError("Логин должен содержать минимум 6 символов, латинские буквы и цифры")
        if User.objects.filter(username=username).exists():
            raise forms.ValidationError("Такой логин уже существует")
        return username
    
    def clean_full_name(self):
        full_name = self.cleaned_data["full_name"]
        if not re.fullmatch(r"[А-Яа-яЁё\s]+", full_name):
            raise forms.ValidationError("ФИО должно содержать кириллицу и пробелы")
        return full_name
    
    def clean_phone(self):
        phone = self.cleaned_data["phone"]
        if not re.fullmatch(r"8\d{3}-\d{2}-\d{2}"):
            raise forms.ValidationError("Телефон должен иметь формат 8(000)-00-00")
        return phone

    def clean_email(self):
        email = self.cleaned_data["email"]
        if User.objects.filter(email=email).exists():
            raise forms.ValidationError("Такой email уже существует")
        return email
    
class LoginForm(AuthentificationForm):
    username = forms.CharField(label="", widget=forms.TextInput(attrs={"class": "form-control", "placeholder": "Введите логин"}))
    password = forms.CharField(label="", widget=forms.PasswordInput(attrs={"class": "form-control", "placeholder": "Введите пароль"}))