from flask import Blueprint, flash, redirect, render_template, request, url_for
from flask_login import login_required, login_user, logout_user

from app.extensions import db, login_manager
from app.models import AdminUser

auth_bp = Blueprint("auth", __name__)


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


@auth_bp.route("/login", methods=["GET", "POST"])
def login():
    if request.method == "POST":
        username = request.form.get("username", "").strip()
        password = request.form.get("password", "")
        user = AdminUser.query.filter_by(username=username).first()
        if user and user.check_password(password):
            login_user(user)
            next_page = request.args.get("next") or url_for("main.dashboard")
            return redirect(next_page)
        flash("نام کاربری یا رمز عبور اشتباه است.", "danger")
    return render_template("auth/login.html")


@auth_bp.route("/logout")
@login_required
def logout():
    logout_user()
    flash("با موفقیت خارج شدید.", "info")
    return redirect(url_for("auth.login"))