# Copyright (C) 2020 by Animath
# SPDX-License-Identifier: GPL-3.0-or-later

from django import forms
from django.contrib.auth.forms import UserCreationForm
from django.contrib.auth.models import User
from django.core.exceptions import ValidationError
from django.forms import FileInput
from django.utils.translation import gettext_lazy as _

from .models import CoachRegistration, ParticipantRegistration, Payment, \
    StudentRegistration, VolunteerRegistration


class SignupForm(UserCreationForm):
    """
    Signup form to registers participants and coaches
    They can choose the role at the registration.
    """

    role = forms.ChoiceField(
        label=lambda: _("role").capitalize(),
        choices=lambda: [
            ("participant", _("participant").capitalize()),
            ("coach", _("coach").capitalize()),
        ],
    )

    def clean_email(self):
        """
        Ensure that the email address is unique.
        """
        email = self.data["email"]
        if User.objects.filter(email=email).exists():
            self.add_error("email", _("This email address is already used."))
        return email

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.fields["first_name"].required = True
        self.fields["last_name"].required = True
        self.fields["email"].required = True

    class Meta:
        model = User
        fields = ('first_name', 'last_name', 'email', 'password1', 'password2', 'role',)


class AddOrganizerForm(forms.ModelForm):
    """
    Signup form to registers volunteers
    """

    def clean_email(self):
        """
        Ensure that the email address is unique.
        """
        email = self.data["email"]
        if User.objects.filter(email=email).exists():
            self.add_error("email", _("This email address is already used."))
        return email

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.fields["first_name"].required = True
        self.fields["last_name"].required = True
        self.fields["email"].required = True

    class Meta:
        model = User
        fields = ('first_name', 'last_name', 'email',)


class UserForm(forms.ModelForm):
    """
    Replace the default user form to require the first name, last name and the email.
    The username is always equal to the email.
    """
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.fields["first_name"].required = True
        self.fields["last_name"].required = True
        self.fields["email"].required = True

    class Meta:
        model = User
        fields = ('first_name', 'last_name', 'email',)


class StudentRegistrationForm(forms.ModelForm):
    """
    A student can update its class, its school and if it allows Animath to contact him/her later.
    """
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.fields["birth_date"].widget = forms.DateInput(attrs={'type': 'date'}, format='%Y-%m-%d')

    class Meta:
        model = StudentRegistration
        fields = ('team', 'student_class', 'birth_date', 'gender', 'address', 'zip_code', 'city', 'phone_number',
                  'health_issues', 'school', 'responsible_name', 'responsible_phone', 'responsible_email',
                  'give_contact_to_animath', 'email_confirmed',)


class PhotoAuthorizationForm(forms.ModelForm):
    """
    Form to send a photo authorization.
    """
    def clean_photo_authorization(self):
        if "photo_authorization" in self.files:
            file = self.files["photo_authorization"]
            if file.size > 2e6:
                raise ValidationError(_("The uploaded file size must be under 2 Mo."))
            if file.content_type not in ["application/pdf", "image/png", "image/jpeg"]:
                raise ValidationError(_("The uploaded file must be a PDF, PNG of JPEG file."))
            return self.cleaned_data["photo_authorization"]

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.fields["photo_authorization"].widget = FileInput()

    class Meta:
        model = ParticipantRegistration
        fields = ('photo_authorization',)


class HealthSheetForm(forms.ModelForm):
    """
    Form to send a health sheet.
    """
    def clean_health_sheet(self):
        if "health_sheet" in self.files:
            file = self.files["health_sheet"]
            if file.size > 2e6:
                raise ValidationError(_("The uploaded file size must be under 2 Mo."))
            if file.content_type not in ["application/pdf", "image/png", "image/jpeg"]:
                raise ValidationError(_("The uploaded file must be a PDF, PNG of JPEG file."))
            return self.cleaned_data["health_sheet"]

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.fields["health_sheet"].widget = FileInput()

    class Meta:
        model = StudentRegistration
        fields = ('health_sheet',)


class ParentalAuthorizationForm(forms.ModelForm):
    """
    Form to send a parental authorization.
    """
    def clean_parental_authorization(self):
        if "parental_authorization" in self.files:
            file = self.files["parental_authorization"]
            if file.size > 2e6:
                raise ValidationError(_("The uploaded file size must be under 2 Mo."))
            if file.content_type not in ["application/pdf", "image/png", "image/jpeg"]:
                raise ValidationError(_("The uploaded file must be a PDF, PNG of JPEG file."))
            return self.cleaned_data["parental_authorization"]

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.fields["parental_authorization"].widget = FileInput()

    class Meta:
        model = StudentRegistration
        fields = ('parental_authorization',)


class CoachRegistrationForm(forms.ModelForm):
    """
    A coach can tell its professional activity.
    """
    class Meta:
        model = CoachRegistration
        fields = ('team', 'gender', 'address', 'zip_code', 'city', 'phone_number', 'health_issues',
                  'professional_activity', 'give_contact_to_animath', 'email_confirmed',)


class VolunteerRegistrationForm(forms.ModelForm):
    """
    A volunteer can also tell its professional activity.
    """
    class Meta:
        model = VolunteerRegistration
        fields = ('professional_activity', 'admin', 'give_contact_to_animath', 'email_confirmed',)


class PaymentForm(forms.ModelForm):
    """
    Indicate payment information
    """
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.fields["valid"].widget.choices[0] = ('unknown', _("Pending"))

    def clean_scholarship_file(self):
        if "scholarship_file" in self.files:
            file = self.files["scholarship_file"]
            if file.size > 2e6:
                raise ValidationError(_("The uploaded file size must be under 2 Mo."))
            if file.content_type not in ["application/pdf", "image/png", "image/jpeg"]:
                raise ValidationError(_("The uploaded file must be a PDF, PNG of JPEG file."))
            return self.cleaned_data["scholarship_file"]

    def clean(self):
        cleaned_data = super().clean()

        if "type" in cleaned_data and cleaned_data["type"] == "scholarship" \
                and "scholarship_file" not in cleaned_data and not self.instance.scholarship_file:
            self.add_error("scholarship_file", _("You must upload your scholarship attestation."))

        return cleaned_data

    class Meta:
        model = Payment
        fields = ('type', 'scholarship_file', 'additional_information', 'valid',)