from flask import render_template, request, g, redirect, url_for, session
from .config import slideshow_images
from .utils import get_cities

def index():
    if request.method == 'GET':
        if not g.user:
            return redirect(url_for("login"))
        images = slideshow_images
        return render_template(
            'index.html', cities=get_cities(), 
            images=images, username=g.name
        )

def logout():
    session.clear()
    session.pop('user_id', None)
    return redirect(url_for('login'))