"""This is the main flask distribusi page"""
from flask import (
    render_template,
    redirect,
    request,
    flash,
    url_for,
    session,
    abort,
    is_safe_url,
)
from sqlalchemy.exc import (
    IntegrityError,
    DataError,
    DatabaseError,
    InterfaceError,
    InvalidRequestError,
)
from flask_login import (
    login_user,
    logout_user,
    login_required,
)

from werkzeug.routing import BuildError
from flask_bcrypt import generate_password_hash, check_password_hash
from flask_wtf.csrf import CSRFError
from datetime import timedelta

from app import create_app, db, login_manager
from usermodel import User
from loginform import LoginForm
from registerform import RegisterForm

APP = create_app()


@APP.before_request
def session_handler():
    session.permanent = True
    APP.permanent_session_lifetime = timedelta(minutes=1)


@APP.route("/")
def index():
    return render_template("index.html")


@APP.route("/login", methods=["GET", "POST"])
def login():
    loginform = LoginForm()
    if loginform.validate_on_submit():
        try:
            user = User.query.filter_by(email=loginform.email.data).first()
            if check_password_hash(user.pwd, 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):
                    return abort(400)
                return redirect(next or url_for("index"))
            else:
                flash("Invalid Username or password!", "danger")
        except Exception as e:
            flash(e, "danger")
    return render_template("login.html", loginform=loginform)


@APP.route("/register", methods=["GET", "POST"])
def register():
    registerform = RegisterForm()
    if registerform.validate_on_submit():
        try:
            email = registerform.email.data
            pwd = registerform.confirmpassword.data

            newuser = User(
                email=email,
                pwd=generate_password_hash(pwd),
            )

            db.session.add(newuser)
            db.session.commit()
            flash("Account Succesfully created", "success")
            return redirect(url_for("login"))

        except InvalidRequestError:
            db.session.rollback()
            flash("Something went wrong!", "danger")
        except IntegrityError:
            db.session.rollback()
            flash("User already exists!.", "warning")
        except DataError:
            db.session.rollback()
            flash("Invalid Entry", "warning")
        except InterfaceError:
            db.session.rollback()
            flash("Error connecting to the database", "danger")
        except DatabaseError:
            db.session.rollback()
            flash("Error connecting to the database", "danger")
        except BuildError:
            db.session.rollback()
            flash("An error occured !", "danger")
    return render_template("register.html", registerform=registerform)


@APP.route("/distribusi")
@login_required
def distribusi():
    return "distribusi"


@APP.route("/admin")
@login_required
def admin():
    return "admin"


@APP.route("/logout")
@login_required
def logout():
    logout_user()
    return redirect(url_for("login"))


@APP.errorhandler(CSRFError)
def handle_csrf_error(e):
    return render_template("csrf_error.html", reason=e.description), 400


@login_manager.user_loader
def load_user(user_id):
    return User.query.get(int(user_id))


if __name__ == "__main__":
    APP.debug = True
    APP.run(port=5000)