from flask_wtf import FlaskForm
from wtforms import StringField, PasswordField, SubmitField, BooleanField
from wtforms.validators import DataRequired, Length, Email, EqualTo, ValidationError
from flaskapp.models import User
from flask_login import current_user
from flaskapp import bcrypt

class RegistrationForm(FlaskForm):
    username = StringField('Username', validators=[
                           DataRequired(), Length(min=2, max=20)])
    email = StringField('Email', validators=[DataRequired(), Email()])
    password = PasswordField('Password', validators=[DataRequired()])
    confirm_password = PasswordField(
        'Confirm Password', validators=[DataRequired(), EqualTo('password')])
    submit = SubmitField('Register')

    def validate_username(self, username):
        user = User.query.filter_by(username=username.data).first()
        if user:
            raise ValidationError(
                'Username already exists.Choose a different username')

    def validate_email(self, email):
        user = User.query.filter_by(email=email.data).first()
        if user:
            raise ValidationError('Email id already exists.')


class LoginForm(FlaskForm):
    email = StringField('Email', validators=[DataRequired(), Email()])
    password = PasswordField('Password', validators=[DataRequired()])
    submit = SubmitField('Log in')


class ForgetForm(FlaskForm):
    email = StringField('Email', validators=[DataRequired(), Email()])
    password = PasswordField('Password', validators=[DataRequired()])
    confirm_password = PasswordField(
        'Confirm Password', validators=[DataRequired(), EqualTo('password')])
    submit = SubmitField('Confirm')

class EditProfileForm(FlaskForm):
    username = StringField('Username', validators=[
                           DataRequired(), Length(min=2, max=20)])
    email = StringField('Email', validators=[DataRequired(), Email()])
    currentpassword=PasswordField('Current Password')
    newpassword=PasswordField('New Password')
    newpasswordconfirm=PasswordField('Confirm Password',validators=[EqualTo('newpassword')])
    submit = SubmitField('Update Profile')
    def validate_username(self,username):
        if username.data!=current_user.username:
            user=User.query.filter_by(username=username.data).first()
            if user:
                raise ValidationError('Username already taken.')
    def validate_email(self,email):
        if email.data!=current_user.email:
            user=User.query.filter_by(email=email.data).first()
            if user:
                raise ValidationError('Email already taken.')
    