from app.auth import USERNAME_REGEX
from app.models import JobStatusMailNotificationLevel, User
from flask_wtf import FlaskForm
from wtforms import (
    BooleanField,
    PasswordField,
    SelectField,
    StringField,
    SubmitField,
    ValidationError
)
from wtforms.validators import DataRequired, Email, EqualTo, Length, Regexp


class ChangePasswordForm(FlaskForm):
    password = PasswordField('Old password', validators=[DataRequired()])
    new_password = PasswordField(
        'New password',
        validators=[
            DataRequired(),
            EqualTo(
                'new_password_confirmation',
                message='Passwords must match'
            )
        ]
    )
    new_password_confirmation = PasswordField(
        'Confirm new password',
        validators=[
            DataRequired(),
            EqualTo('new_password', message='Passwords must match')
        ]
    )
    submit = SubmitField('Submit')

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

    def validate_current_password(self, field):
        if not self.user.verify_password(field.data):
            raise ValidationError('Invalid password')


class EditGeneralSettingsForm(FlaskForm):
    email = StringField(
        'E-Mail',
        validators=[DataRequired(), Length(1, 254), Email()]
    )
    username = StringField(
        'Username',
        validators=[
            DataRequired(),
            Length(1, 64),
            Regexp(
                USERNAME_REGEX,
                message='Usernames must have only letters, numbers, dots or underscores'  # noqa
            )
        ]
    )
    submit = SubmitField('Submit')

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

    def validate_email(self, field):
        if (
            field.data != self.user.email
            and User.query.filter_by(email=field.data).first()
        ):
            raise ValidationError('Email already registered')

    def validate_username(self, field):
        if (
            field.data != self.user.username
            and User.query.filter_by(username=field.data).first()
        ):
            raise ValidationError('Username already in use')


class EditInterfaceSettingsForm(FlaskForm):
    dark_mode = BooleanField('Dark mode')
    submit = SubmitField('Submit')


class EditNotificationSettingsForm(FlaskForm):
    job_status_mail_notification_level = SelectField(
        'Job status mail notification level',
        choices=[('', 'Choose your option')],
        validators=[DataRequired()]
    )
    submit = SubmitField('Submit')

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.job_status_mail_notification_level.choices += [
            (enum_member.name, enum_member.name.capitalize())
            for enum_member in JobStatusMailNotificationLevel
        ]