eliminazione file superflui, spostamento file read.php all'interno del progetto, aggiunta astrazione classe Qrcode, miglioramento download bulk, refactoring generale

Signed-off-by: giandonato.inverso@edempg.it <giandonato.inverso@studenti.unimi.it>

src/config/config.php

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+<?php
+//Note: This file should be included first in every php page.
+require_once ('environment.php');
+
+error_reporting(E_ALL);
+ini_set('display_errors', 'On');
+define('BASE_PATH', dirname(dirname(__FILE__)));
+define('CURRENT_PAGE', basename($_SERVER['REQUEST_URI']));
+
+require_once BASE_PATH . '/lib/MysqliDb/MysqliDb.php';
+require_once BASE_PATH . '/helpers/helpers.php';
+
+/* SAVED QR CODES */
+//You can change the folder where the qr code will be saved
+define('SAVED_QRCODE_FOLDER', './saved_qrcode/');
+define('SAVED_QRCODE_DIRECTORY', BASE_PATH.'/saved_qrcode/');
+define('SAVED_QRCODE_URL', base_url().'/saved_qrcode/');
+
+//You can change the page name for the redirect and the search parameter (the default is "id")
+define('READ_PATH', base_url().'/read.php?id=');
+
+
+/**
+ * Get instance of DB object
+ */
+function getDbInstance() {
+    return new MysqliDb (Array (
+        'host' => DATABASE_HOST,
+        'username' => DATABASE_USER,
+        'password' => DATABASE_PASSWORD,
+        'db'=> DATABASE_NAME,
+        'port' => DATABASE_PORT,
+        'prefix' => DATABASE_PREFIX,
+        'charset' => DATABASE_CHARSET));
+}

src/config/environment.php.example

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+<?php
+/*
+|--------------------------------------------------------------------------
+| DOCKER INSTALLATION
+|--------------------------------------------------------------------------
+ */
+$docker_cid = getenv('DOCKER_CID');
+
+if(is_string($docker_cid)) {
+    define('DATABASE_HOST', Getenv('DATABASE_HOST'));
+    define('DATABASE_PORT', filter_var(Getenv('DATABASE_PORT'), FILTER_VALIDATE_INT));
+    define('DATABASE_NAME', Getenv('DATABASE_NAME'));
+    define('DATABASE_USER', Getenv('DATABASE_USER'));
+    define('DATABASE_PASSWORD', Getenv('DATABASE_PASSWORD'));
+    // This must have a trailing underscore.
+    // Example: qr_
+    define('DATABASE_PREFIX', Getenv('DATABASE_PREFIX'));
+    define('DATABASE_CHARSET', Getenv('DATABASE_CHARSET'));
+} else {
+    define('DATABASE_HOST', "mariadb");
+    define('DATABASE_PORT', "3306");
+    define('DATABASE_NAME', "qrcode");
+    define('DATABASE_USER', "root");
+    define('DATABASE_PASSWORD', "root");
+    // This must have a trailing underscore.
+    // Example: qr_
+    define('DATABASE_PREFIX', "");
+    define('DATABASE_CHARSET', "utf8");
+}
+/*
+|--------------------------------------------------------------------------
+| INSTALLATION WITHOUT CONTAINER
+|--------------------------------------------------------------------------
+ */
+
+?>