from django import forms
from django.conf import settings
from django.contrib.auth.password_validation import validate_password


NEWSLETTER_LABEL = "Email me when new works premiere (about twice a month). Unsubscribe any time."


class RegistrationForm(forms.Form):
    uid = forms.RegexField(regex=r"^[a-z][a-z0-9._-]{2,47}$", max_length=48, label="Username", help_text="3–48 lowercase letters, numbers, dots, underscores or hyphens. Start with a letter.")
    email = forms.EmailField(max_length=254)
    # Explicit opt-in: unticked by default, and only offered when configured.
    newsletter = forms.BooleanField(required=False, label=NEWSLETTER_LABEL)

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        if not settings.LISTMONK_ENABLED:
            del self.fields["newsletter"]

    def clean_email(self):
        return self.cleaned_data["email"].strip().casefold()


class PasswordForm(forms.Form):
    password = forms.CharField(max_length=1024, widget=forms.PasswordInput(attrs={"autocomplete": "new-password"}), label="Password", help_text="Use at least 12 characters. Choose a strong, unique password for your eom.dev account.")
    confirm_password = forms.CharField(max_length=1024, widget=forms.PasswordInput(attrs={"autocomplete": "new-password"}), label="Confirm password")

    def clean_password(self):
        password = self.cleaned_data["password"]
        validate_password(password)
        return password

    def clean(self):
        data = super().clean()
        if data.get("password") != data.get("confirm_password"):
            self.add_error("confirm_password", "Passwords must match.")
        return data