SWDB/application/API/v1/API_Controller.php

<?php
/**
 * v1 API Controller file.
 *
 * Provides a class to handle all posible API requests.
 *
 * @author Iñigo Valentin <i@inigovalentin.com>
 * @license https://www.gnu.org/licenses/gpl-3.0.en.html GNU General Public License V3
 * @package SWDB
 */

/**
 * v1 API controller.
 *
 * Handles every API request.
 *
 * @category API
 */
class API_Controller {

    /**
     * Constructor.
     *
     * Handles every request, creating the required models and selecting the
     * view.
     *
     * @param string[] $query GET parameters of the request.
     */
    public function __construct($query){

        // Remove /API/
        array_shift($query);
        // Remove /v1/
        array_shift($query);
        // API call: Use API controller
        $method = $_SERVER["REQUEST_METHOD"];
        if (!in_array($method, ["GET", "POST", "PUT", "DELETE"])){
            $method = "GET";
        }
        if (count($query) == 0 || $query[0] == null || $query[0] == ""){
            require_once(__DIR__ . "/main.php");
        }
        else{
            $command = strtolower($query[0]);
            // Remove /<command>/
            array_shift($query);
            switch ($command){
                case "help":
                    require_once(__DIR__ . "/help/index.php");
                    break;
                case "profile":
                case "run":
                case "logbook":
                case "collection":
                case "run":
                case "units":
                    if (file_exists(__DIR__ . "/$command/$method.php")){
                        require_once(__DIR__ . "/$command/$method.php");
                    }
                    else{
                        header("HTTP/1.1 404");
                    }
                    break;
                default:
                    header("HTTP/1.1 404");
            }
        }
    }
}