"""Authentication blueprint - login, logout, profile."""
from flask import Blueprint, render_template, request, redirect, url_for, session, flash

auth_bp = Blueprint("auth", __name__)


@auth_bp.route("/login", methods=["GET", "POST"])
def login():
    """Login page."""
    if request.method == "POST":
        # TODO: Implement API call to server /api/auth/login
        pass
    return render_template("auth/login.html")


@auth_bp.route("/logout")
def logout():
    """Logout - clear session."""
    session.clear()
    return redirect(url_for("auth.login"))


@auth_bp.route("/profile", methods=["GET", "POST"])
def profile():
    """User profile - change display name, language, theme."""
    if "user" not in session:
        return redirect(url_for("auth.login"))
    if request.method == "POST":
        # TODO: Implement API call to server /api/auth/me PUT
        pass
    return render_template("auth/profile.html")