Lesson8

.gitignore

@@ -1,5 +1,8 @@
-**/node_modules/
-**.DS_Store
-**/.vs/
-**/dist/
-**/.idea
+**/node_modules/
+**.DS_Store
+**/.vs/
+**/dist/
+**/.idea
+**/.sublime-project
+**/.sublime-workspace
+**/_log

config/config.php

@@ -0,0 +1,23 @@
+<?php
+define('ROOT', dirname(__DIR__));
+define('IMG_BIG', $_SERVER['DOCUMENT_ROOT'] . '/images/gallery_img/big/');
+define('IMG_SMALL', $_SERVER['DOCUMENT_ROOT'] . '/images/gallery_img/small/');
+define('TEMPLATES_DIR', ROOT . '/templates/');
+define('LAYOUTS_DIR', 'layouts/');
+
+/* DB config */
+define('HOST', 'localhost');
+define('USER', 'root');
+define('PASS', 'root');
+define('DB', 'php1');
+
+include ROOT . "/engine/db.php";
+include ROOT . "/engine/functions.php";
+include ROOT . "/engine/log.php";
+include ROOT . "/engine/gallery.php";
+include ROOT . "/engine/catalog.php";
+include ROOT . "/engine/calculator.php";
+include ROOT . "/engine/classSimpleImage.php";
+include ROOT . "/engine/feedback.php";
+include ROOT . "/engine/auth.php";
+include ROOT . "/engine/service.php";

engine/auth.php

@@ -0,0 +1,53 @@
+<?php
+
+if (isset($_POST['auth'])) {
+    $login = $_POST['login'];
+    $password = $_POST['password'];
+    if (!auth($login, $password)) {
+        $_GET['authError'] = "Неверный логин/пароль!";
+    } else {
+        if (isset($_POST['cookie'])) {
+            /** @var Stringable $hash */
+            $hash = uniqid(rand(), true);
+            $id = (INT)$_SESSION['id'];
+            executeQuery("UPDATE `users` SET `hash` = '{$hash}' WHERE id = {$id}");
+            setcookie("hash", $hash, time() + 36000, '/');
+        }
+
+        header("Location:" . $_SERVER["HTTP_REFERER"]);
+    }
+
+}
+
+function auth($login, $password):bool {
+    $login = mysqli_real_escape_string(getDb(), strip_tags(stripcslashes($login)));
+    $passDb = getAssocResult("SELECT * FROM `users` WHERE login = '{$login}'")[0];
+
+    if (password_verify($password, $passDb['password'])) {
+        $_SESSION['login'] = $login;
+        $_SESSION['id'] = $passDb['id'];
+        return true;
+    }
+    return false;
+}
+
+function isAuth():bool {
+    if (isset($_COOKIE['hash']) && !isset($_SESSION['login'])) {
+        $hash = $_COOKIE['hash'];
+        $user = getAssocResult("SELECT * FROM `users` WHERE `hash` = '{$hash}'")[0]['login'];
+        if (!empty($user)) {
+            $_SESSION['login'] = $user;
+        }
+    }
+    return isset($_SESSION['login']);
+}
+
+function getUser() {
+    return $_SESSION['login'];
+}
+
+if (isset($_GET['logout'])) {
+    session_destroy();
+    setcookie('hash', '', time() - 36000, '/');
+    header('Location: /');
+}

engine/calculator.php

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+<?php
+
+function parseOperations($str) {
+
+	if(strlen($str) < 3) return $str;
+
+	$operations = [
+		'+' => 'sum',
+		'-' => 'sub',
+		'*' => 'mul',
+		'/' => 'div'
+	];
+
+	$arg1 = preg_split('/[\+\-\*\/]+/', $str)[0];
+	$arg2 = preg_split('/[\+\-\*\/]+/', $str)[1];
+	$operation = preg_split('/[^\+\-\*\/]+/', $str)[1];
+
+	return mathOperation($arg1, $arg2, $operations[$operation]);
+}
+
+function sum($arg1, $arg2){
+	return $arg1 + $arg2;
+}
+
+function sub($arg1, $arg2){
+	return $arg1 - $arg2;
+}
+
+function mul($arg1, $arg2){
+	return $arg1 * $arg2;
+}
+
+function div($arg1, $arg2){
+	if($arg2 == 0) {
+		return 'Ошибка! На ноль делить нельзя.';
+	}
+	return $arg1 / $arg2;
+}
+
+function mathOperation($arg1, $arg2, $operation){
+	if(function_exists($operation)){
+		return $operation($arg1, $arg2);
+	}
+}

engine/catalog.php

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+<?php
+function getCatalog():array {
+    return getAssocResult("SELECT * FROM `catalog`");
+}
+
+function getOneGood($id){
+    return getAssocResult("SELECT * FROM `catalog` WHERE id = {$id}")[0];
+}
+
+function cartAction($action, $session_id) {
+    $id = (INT)$_GET['id'];
+    switch ($action) {
+        case 'add':
+            echo json_encode(
+                [
+                    'added' => addToCart($id, $session_id),
+                    'count' => getAllCartItemsCount($session_id),
+                    'total' => getTotalPrice(getCart($session_id))
+                ]
+            );
+            break;
+
+        case 'delete':
+            echo json_encode(
+                [
+                    'deleted' => deleteFromCart($id, $session_id),
+                    'count' => getAllCartItemsCount($session_id),
+                    'total' => getTotalPrice(getCart($session_id))
+                ]
+            );
+            break;
+
+        case 'checkout':
+
+            echo json_encode(
+                [
+                    'ordered' => makeAnOrder($session_id),
+                ]
+            );
+            break;
+    }
+    die();
+}
+
+function makeAnOrder($session_id):bool {
+    $result = json_decode(file_get_contents('php://input'));
+    executeQuery("UPDATE `cart` SET `cart_status` = 1 WHERE session_id = '{$session_id}'");
+    return executeQuery("INSERT INTO `orders` (name, number, mail, session_id) VALUES ('{$result->name}', '{$result->number}', '{$result->email}', '{$session_id}')");
+}
+
+function getCart($session_id):array {
+
+    $cart = getAssocResult("SELECT cart.id cart_id, catalog.image, catalog.id catalog_id, catalog.name, catalog.price FROM cart, catalog WHERE cart.good_id=catalog.id AND session_id = '{$session_id}' AND cart_status = 0");
+
+    $each = getEachCartItemsCount($session_id);
+
+    $tmp = [];
+    $unique = [];
+
+    foreach ($cart as $good) {
+        if (!in_array($good['catalog_id'], $tmp)) {
+            $unique[] = $good;
+            $tmp[] = $good['catalog_id'];
+        }
+    }
+
+    function replace($a, $b) {
+        if ($a['catalog_id'] === $b['catalog_id']) {
+            $a['count'] = $b['count'];
+        }
+
+        $a['sub_total'] = (INT)str_replace(' ', '', $a['price']) * $b['count'];
+        return $a;
+    }
+
+    return array_map('replace', $unique, $each);
+}
+
+function getAllCartItemsCount($session_id):string {
+    return getAssocResult("SELECT COUNT(id) as count FROM `cart` WHERE `session_id`='{$session_id}' AND cart_status = 0")[0]['count'];
+}
+
+function getEachCartItemsCount($session_id):array {
+//    $sql =  "SELECT `catalog`.id AS good_id, SUM(`catalog`.price) AS total FROM `cart` INNER JOIN `catalog` ON `catalog`.id = `cart`.good_id GROUP BY `cart`.id";
+    return getAssocResult("SELECT `good_id` AS `catalog_id` , COUNT(`good_id`) AS count FROM `cart` WHERE `session_id` = '$session_id' AND cart_status = 0 GROUP BY (good_id)");
+}
+
+function getTotalPrice($cart) {
+    $total = 0;
+    foreach ($cart as $item) {
+        $total += $item['sub_total'];
+    }
+    return $total;
+}
+
+function addToCart($id, $session_id):bool {
+    $sql = "INSERT INTO `cart` (good_id, session_id) VALUES ($id, '$session_id')";
+    return executeQuery($sql);
+}
+
+function deleteFromCart($good_id, $session_id):bool {
+    return executeQuery("DELETE FROM `cart` WHERE good_id = '{$good_id}' AND session_id = '{$session_id}' AND cart_status = 0 LIMIT 1");
+}

engine/classSimpleImage.php

@@ -0,0 +1,85 @@
+<?php
+/*
+* File: SimpleImage.php
+* Author: Simon Jarvis
+* Copyright: 2006 Simon Jarvis
+* Date: 08/11/06
+* Link: http://www.white-hat-web-design.co.uk/articles/php-image-resizing.php
+*
+* This program is free software; you can redistribute it and/or
+* modify it under the terms of the GNU General Public License
+* as published by the Free Software Foundation; either version 2
+* of the License, or (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU General Public License for more details:
+* http://www.gnu.org/licenses/gpl.html
+*
+*/
+
+class SimpleImage {
+
+   var $image;
+   var $image_type;
+
+   function load($filename) {
+      $image_info = getimagesize($filename);
+      $this->image_type = $image_info[2];
+      if( $this->image_type == IMAGETYPE_JPEG ) {
+         $this->image = imagecreatefromjpeg($filename);
+      } elseif( $this->image_type == IMAGETYPE_GIF ) {
+         $this->image = imagecreatefromgif($filename);
+      } elseif( $this->image_type == IMAGETYPE_PNG ) {
+         $this->image = imagecreatefrompng($filename);
+      }
+   }
+   function save($filename, $image_type=IMAGETYPE_JPEG, $compression=75, $permissions=null) {
+      if( $image_type == IMAGETYPE_JPEG ) {
+         imagejpeg($this->image,$filename,$compression);
+      } elseif( $image_type == IMAGETYPE_GIF ) {
+         imagegif($this->image,$filename);
+      } elseif( $image_type == IMAGETYPE_PNG ) {
+         imagepng($this->image,$filename);
+      }
+      if( $permissions != null) {
+         chmod($filename,$permissions);
+      }
+   }
+   function output($image_type=IMAGETYPE_JPEG) {
+      if( $image_type == IMAGETYPE_JPEG ) {
+         imagejpeg($this->image);
+      } elseif( $image_type == IMAGETYPE_GIF ) {
+         imagegif($this->image);
+      } elseif( $image_type == IMAGETYPE_PNG ) {
+         imagepng($this->image);
+      }
+   }
+   function getWidth() {
+      return imagesx($this->image);
+   }
+   function getHeight() {
+      return imagesy($this->image);
+   }
+   function resizeToHeight($height) {
+      $ratio = $height / $this->getHeight();
+      $width = $this->getWidth() * $ratio;
+      $this->resize($width,$height);
+   }
+   function resizeToWidth($width) {
+      $ratio = $width / $this->getWidth();
+      $height = $this->getheight() * $ratio;
+      $this->resize($width,$height);
+   }
+   function scale($scale) {
+      $width = $this->getWidth() * $scale/100;
+      $height = $this->getheight() * $scale/100;
+      $this->resize($width,$height);
+   }
+   function resize($width,$height) {
+      $new_image = imagecreatetruecolor($width, $height);
+      imagecopyresampled($new_image, $this->image, 0, 0, 0, 0, $width, $height, $this->getWidth(), $this->getHeight());
+      $this->image = $new_image;
+   }
+}

engine/db.php

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+<?php
+
+/*
+ * Функция, осуществляющая соединение с базой данных и возвращающее его
+ * static позволяет сохранить состояние и вернуть уже текущее соединение
+ * чтобы не делать нового
+ */
+function getDb(){
+	static $db = null;
+
+	if(is_null($db)){
+		$db = @mysqli_connect(HOST, USER, PASS, DB) or die('Could not connect: ' . mysqli_connect_error());
+	}
+	return $db;
+}
+
+/*
+ * Обертка для выполнения запроса на получение данных
+ * Данные возвращаются в виде ассоциативного массива
+ * Цикл по получению данных уже реализован в этой функции
+ */
+function getAssocResult($sql):array{
+	$result = @mysqli_query(getDb(), $sql) or die(mysqli_error(getDb()));
+	$array_result = [];
+	while ($row = mysqli_fetch_assoc($result)) {
+		$array_result[] = $row;
+	}
+
+	return $array_result;
+}
+
+/*
+ * Обертка для выполнения любого запроса.
+ * Передаем в параметре текст sql-запроса.
+ * Возвращаем результат,
+ * в виде логического значения (выполнился/не выполнился) запрос.
+ */
+function executeQuery($sql):bool{
+	@mysqli_query(getDb(), $sql) or die(mysqli_error(getDb()));
+	return !(mysqli_affected_rows(getDb()) === 0);
+}