init.php

<?php
// Display all errors
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);

// These configs are used to setup Equalify's database and execution.
require __DIR__ . '/vendor/autoload.php';
$dotenv = Dotenv\Dotenv::createImmutable(__DIR__, '.env');
$dotenv->safeLoad();

$GLOBALS["managed_mode"] = false;
if (array_key_exists('MODE', $_ENV) &&  $_ENV['MODE'] == 'managed') { 
    $GLOBALS["managed_mode"] = true;
};

if($GLOBALS["managed_mode"]){ // if we're in managed mode, initialize auth0

    define('ROUTE_URL_INDEX', rtrim($_ENV['AUTH0_BASE_URL'], '/'));
    define('ROUTE_URL_LOGIN', ROUTE_URL_INDEX . '/?auth=login');
    define('ROUTE_URL_CALLBACK', ROUTE_URL_INDEX . '/?auth=auth_callback');
    define('ROUTE_URL_LOGOUT', ROUTE_URL_INDEX . '/?auth=logout');

    $auth0 = new \Auth0\SDK\Auth0([
        'domain' => $_ENV['AUTH0_DOMAIN'],
        'clientId' => $_ENV['AUTH0_CLIENT_ID'],
        'clientSecret' => $_ENV['AUTH0_CLIENT_SECRET'],
        'cookieSecret' => $_ENV['AUTH0_COOKIE_SECRET']
    ]);

    $session = $auth0->getCredentials();

    if (!empty($_GET['auth'])){ // Router for auth endpoints
        require_once 'actions/'.$_GET['auth'].'.php';
    }
    
    if ($session === null) {  // The user isn't logged in.      
        require_once 'actions/login.php';
    } else {
        $GLOBALS["ACTIVE_DB"] = $session->user['equalify_databases'][0]; // TODO: currently just takes first from DBs array, should be switchable
    }

}

// Database creds
$db_host = $_ENV['DB_HOST'];
$db_port = $_ENV['DB_PORT']; 
$db_name = $_ENV['DB_NAME'];
$db_user = $_ENV['DB_USERNAME'];
$db_pass = $_ENV['DB_PASSWORD']; 

// Set Current DB
if($GLOBALS["managed_mode"]){ 
    $current_db = $GLOBALS["ACTIVE_DB"];
}else{
    $current_db = $_ENV['DB_NAME'];
}

// Create DB connection
$pdo = new PDO("mysql:host=$db_host;port=$db_port;dbname=$current_db", "$db_user", "$db_pass");
$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

// Start session
session_start();