Lesson6

.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 +1,20 @@
+<?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/catalog.php";
+include ROOT . "/engine/calculator.php";
+include ROOT . "/engine/classSimpleImage.php";
+include ROOT . "/engine/feedback.php";

engine/calculator.php

@@ -0,0 +1,44 @@
+<?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

@@ -0,0 +1,48 @@
+<?php
+function getCatalog():array{
+	return getAssocResult("SELECT * FROM `catalog` ORDER BY views DESC");
+}
+
+function getOneImage($id){
+	return getAssocResult("SELECT * FROM `catalog` WHERE id = {$id}")[0];
+}
+
+function addLikes($id){
+	executeQuery("UPDATE `catalog` SET views = views + 1 WHERE id = {$id}");
+}
+
+function uploadImage():string{
+	$path_big = IMG_BIG . $_FILES['image']['name'];
+	$path_small = IMG_SMALL . $_FILES['image']['name'];
+
+	$image_info = getimagesize($_FILES['image']['tmp_name']);
+
+	if ($image_info['mime'] != 'image/png' && $image_info['mime'] != 'image/gif' && $image_info['mime'] != 'image/jpeg') {
+		return "Можно загружать только jpg/png/gif/jpeg - файлы";
+	}
+
+	if ($_FILES['image']['size'] > 1024 * 5 * 1024) {
+		return "Размер файла не более 5 Мб";
+	}
+
+	$blacklist = ['.php', '.phtml', '.php3', '.php4'];
+	foreach ($blacklist as $item) {
+		if(preg_match("/$item\$/i", $_FILES['image']['name'])){
+			return "Загрузка php-файлов запрещена";
+		}
+	}
+
+	if (move_uploaded_file($_FILES['image']['tmp_name'], $path_big)) {
+
+		$filename = mysqli_real_escape_string(getDb(), $_FILES['image']['name']);
+		executeQuery("INSERT INTO `catalog` (`filename`) VALUES ('{$filename}')");
+
+		$image = new SimpleImage();
+		$image->load($path_big);
+		$image->resizeToWidth(250);
+		$image->save($path_small);
+		header("Location: /catalog");
+	} else {
+		return "Ошибка ресайза файла";
+	}
+}

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

@@ -0,0 +1,25 @@
+<?php
+
+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 $db;
+}
+
+function getAssocResult($sql):array{
+	$result = @mysqli_query(getDb(), $sql) or die(mysqli_error(getDb()));
+	$array_result = [];
+	while ($row = mysqli_fetch_assoc($result)) {
+		$array_result[] = $row;
+	}
+
+	return $array_result;
+}
+
+function executeQuery($sql):bool{
+	@mysqli_query(getDb(), $sql) or die(mysqli_error(getDb()));
+	return !(mysqli_affected_rows(getDb()) === 0);
+}

engine/feedback.php

@@ -0,0 +1,68 @@
+<?php
+
+function getAllFeedback():array{
+    $sql = "SELECT * FROM `feedback` ORDER BY id";
+    return getAssocResult($sql);
+}
+
+function feedbackAction($action = '') {
+    switch ($action) {
+        case 'create':
+            $data = readFeedback();
+            $id = createFeedback($data->name, $data->feedback);
+
+            $response = [
+                'id' => $id,
+                'name' => $data->name,
+                'feedback' => $data->feedback
+            ];
+
+            echo json_encode($response, JSON_UNESCAPED_UNICODE);
+            break;
+
+        case 'read':
+            echo json_encode(getOneFeedback(), JSON_UNESCAPED_UNICODE);
+            break;
+
+        case 'update':
+            $data = readFeedback();
+            $response = updateFeedback($data);
+            echo json_encode(['updated' => $response]);
+            break;
+
+        case 'delete':
+            $data = json_decode(file_get_contents('php://input'));
+            $response = deleteFeedback($data);
+            echo json_encode(['deleted' => $response]);
+            break;
+    }
+    die();
+}
+
+function createFeedback($name, $feedback) {
+    $name = strip_tags(htmlspecialchars(mysqli_real_escape_string(getDb(), $name)));
+    $feedback = strip_tags(htmlspecialchars(mysqli_real_escape_string(getDb(), $feedback)));
+    $sql = "INSERT INTO `feedback` (`name`, `feedback`) VALUES ('{$name}', '{$feedback}');";
+    executeQuery($sql);
+    return mysqli_insert_id(getDb());
+}
+
+function readFeedback() {
+    return json_decode(file_get_contents('php://input'));
+}
+
+function updateFeedback($data):bool {
+    return executeQuery("UPDATE `feedback` SET `name` = '{$data->name}', `feedback` = '{$data->feedback}' WHERE `feedback`.`id` = {$data->id}");
+}
+
+function deleteFeedback($id):bool {
+    $id = (INT)$id;
+    return executeQuery("DELETE FROM `feedback` WHERE `feedback`.`id` = {$id}");
+}
+
+function getOneFeedback():array {
+    $id = (INT)json_decode(file_get_contents('php://input'));
+    $sql = "SELECT * FROM feedback WHERE id = {$id}";
+    return getAssocResult($sql)[0];
+
+}

engine/functions.php

@@ -0,0 +1,71 @@
+<?php
+
+function prepareVariables($page, $action):array{
+    $params['layout'] = 'main';
+    switch ($page) {
+
+        case 'image':
+            $params['layout'] = 'catalog';
+            $params['image'] = getOneImage((int)$_GET['id']);
+            break;
+
+        case 'addLike':
+            $params['layout'] = 'catalog';
+            addLikes((int)$_GET['id']);
+            break;
+
+        case 'catalog':
+            if(isset($_POST['load'])){
+                $params['errors'] = uploadImage();
+            }
+            $params['layout'] = 'catalog';
+            $params['catalog'] = getCatalog();
+            break;
+
+        case 'feedback':
+            $params['layout'] = 'feedback';
+            $params['feedback'] = getAllFeedback();
+            break;
+
+        case 'feedbackapi':
+            feedbackAction($action);
+            break;
+
+        case 'calculator':
+            if (!empty($_POST['output'])) {
+                $params['output'] = parseOperations($_POST['output']);
+            }
+            $params['layout'] = 'calculator';
+            break;
+
+        case 'homework_3':
+            $params['layout'] = 'homework_3';
+            break;
+    }
+    return $params;
+}
+
+function render($page, $params){
+    return renderTemplate(LAYOUTS_DIR . $params['layout'], [
+            'content' => renderTemplate($page, $params),
+            'menu' => renderTemplate('menu', $params),
+        ]
+    );
+}
+
+function renderTemplate($page, $params = []){
+    ob_start();
+
+    if (!is_null($params))
+        extract($params);
+
+    $fileName = TEMPLATES_DIR . $page . ".php";
+
+    if (file_exists($fileName)) {
+        include $fileName;
+    } else {
+        Die("Страницы {$fileName} не существует.");
+    }
+
+    return ob_get_clean();
+}