from flask import Blueprint, render_template, request, redirect, url_for, flash, session
from app.services.user_service import UserService

auth_bp = Blueprint("auth", __name__)

@auth_bp.route("/", methods=["GET", "POST"])
@auth_bp.route("/login", methods=["GET", "POST"])
def login():
    if request.method == "POST":
        email = request.form.get("email")
        password = request.form.get("password")

        user = UserService.validate_login(email, password)
        if user:
            session["user_id"] = user.id
            session["user_name"] = user.name
            flash("Login successful", "success")
            return redirect(url_for("dashboard.dashboard"))

        flash("Invalid email or password", "danger")

    return render_template("login.html", title="Login")

@auth_bp.route("/logout")
def logout():
    session.clear()
    flash("Logged out successfully", "info")
    return redirect(url_for("auth.login"))

@auth_bp.route("/register", methods=["GET", "POST"])
def register():
    if request.method == "POST":
        name = request.form.get("name")
        email = request.form.get("email")
        password = request.form.get("password")

        user = UserService.register_user(name, email, password)
        if not user:
            flash("Email already exists", "danger")
            return redirect(url_for("auth.register"))

        flash("User registered successfully", "success")
        return redirect(url_for("auth.login"))

    return render_template("register.html", title="Register")