from flask import (
    render_template,
    redirect,
    request,
    flash,
    url_for,
    abort,
)
from usermodel import User
from forms.loginform import LoginForm
from flask_login import login_user
from flask_bcrypt import check_password_hash


def LoginUser():
    loginform = LoginForm()
    if loginform.validate_on_submit():
        try:
            user = User.query.filter_by(email=loginform.email.data).first()
            if user is None:
                loginform.password.errors.append("Invalid email or password!")
                return render_template("login.html", loginform=loginform)
            if check_password_hash(user.password, loginform.password.data):
                login_user(user)
                flash("Logged in successfully.", "success")
                next = request.args.get("next")
                if next is not None and not is_safe_url(next):  # noqa: F821
                    return abort(400)
                return redirect(next or url_for("index"))
            else:
                flash("Invalid email or password!", "danger")
                loginform.password.errors.append("Invalid email or password!")
                return render_template("login.html", loginform=loginform)
        except Exception as e:
            flash(e, "danger")
    return render_template("login.html", loginform=loginform)