Add free Google translate

AlexStack · AlexStack · commit de9be13d832f · 2020-01-19T19:06:02.000+13:00
diff --git a/README.md b/README.md
@@ -50,6 +50,17 @@ php artisan laravelcms --action=clear
 }
 ```
 
+## Where can I get the app_id & app_key
+
+-   Option 1: Provider Baidu, From https://api.fanyi.baidu.com/, free, only 1 translate allowed per second
+-   Option 2: Provider Google, From https://cloud.google.com/translate/docs/
+
+## Use free Google translate
+
+-   Set provider to Google_Free
+-   Set both app_id & app_key to google_free_001, then our CMS will use package https://github.com/dejurin/php-google-translate-for-free to do the translate. (It's the default)
+-   Set both app_id & app_key to google_free_002, then our CMS will use the package https://github.com/Stichoza/google-translate-php to do the translate, YOU NEED INSTALL THE PACKAGE VIA COMMAND LINE FIRST: composer require stichoza/google-translate-php
+
 ## Improve this plugin & documents
 
 -   You are very welcome to improve this plugin and how to use documents
diff --git a/src/Controllers/GoogleTranslateForFree.php b/src/Controllers/GoogleTranslateForFree.php
@@ -0,0 +1,188 @@
+<?php
+
+namespace Amila\LaravelCms\Plugins\Translator\Controllers;
+
+/**
+ * GoogleTranslateForFree.php.
+ *
+ * Class for free use Google Translator. With attempts connecting on failure and array support.
+ *
+ * @category Translation
+ *
+ * @author Yuri Darwin
+ * @author Yuri Darwin <gkhelloworld@gmail.com>
+ * @copyright 2019 Yuri Darwin
+ * @license https://opensource.org/licenses/MIT
+ *
+ * @version 1.0.0
+ */
+
+/**
+ * Main class GoogleTranslateForFree.
+ */
+class GoogleTranslateForFree
+{
+    /**
+     * @param string       $source
+     * @param string       $target
+     * @param string|array $text
+     * @param int          $attempts
+     *
+     * @return string|array With the translation of the text in the target language
+     */
+    public static function translate($source, $target, $text, $attempts = 5)
+    {
+        // Request translation
+        if (is_array($text)) {
+            // Array
+            $translation = self::requestTranslationArray($source, $target, $text, $attempts = 5);
+        } else {
+            // Single
+            $translation = self::requestTranslation($source, $target, $text, $attempts = 5);
+        }
+
+        return $translation;
+    }
+
+    /**
+     * @param string $source
+     * @param string $target
+     * @param array  $text
+     * @param int    $attempts
+     *
+     * @return array
+     */
+    protected static function requestTranslationArray($source, $target, $text, $attempts)
+    {
+        $arr = [];
+        foreach ($text as $value) {
+            // timeout 0.5 sec
+            usleep(500000);
+            $arr[] = self::requestTranslation($source, $target, $value, $attempts = 5);
+        }
+
+        return $arr;
+    }
+
+    /**
+     * @param string $source
+     * @param string $target
+     * @param string $text
+     * @param int    $attempts
+     *
+     * @return string
+     */
+    protected static function requestTranslation($source, $target, $text, $attempts)
+    {
+        // Google translate URL
+        $url = 'https://translate.google.com/translate_a/single?client=at&dt=t&dt=ld&dt=qca&dt=rm&dt=bd&dj=1&hl=uk-RU&ie=UTF-8&oe=UTF-8&inputm=2&otf=2&iid=1dd3b944-fa62-4b55-b330-74909a99969e';
+
+        $fields = [
+            'sl' => urlencode($source),
+            'tl' => urlencode($target),
+            'q'  => urlencode($text),
+        ];
+
+        if (strlen($fields['q']) >= 5000) {
+            throw new \Exception('Maximum number of characters exceeded: 5000');
+        }
+        // URL-ify the data for the POST
+        $fields_string = self::fieldsString($fields);
+
+        $content = self::curlRequest($url, $fields, $fields_string, 0, $attempts);
+
+        if (null === $content) {
+            //echo $text,' Error',PHP_EOL;
+            return '';
+        } else {
+            // Parse translation
+            return self::getSentencesFromJSON($content);
+        }
+    }
+
+    /**
+     * Dump of the JSON's response in an array.
+     *
+     * @param string $json
+     *
+     * @return string
+     */
+    protected static function getSentencesFromJSON($json)
+    {
+        $arr       = json_decode($json, true);
+        $sentences = '';
+
+        if (isset($arr['sentences'])) {
+            foreach ($arr['sentences'] as $s) {
+                $sentences .= isset($s['trans']) ? $s['trans'] : '';
+            }
+        }
+
+        return $sentences;
+    }
+
+    /**
+     * Curl Request attempts connecting on failure.
+     *
+     * @param string $url
+     * @param array  $fields
+     * @param string $fields_string
+     * @param int    $i
+     * @param int    $attempts
+     *
+     * @return string
+     */
+    protected static function curlRequest($url, $fields, $fields_string, $i, $attempts)
+    {
+        ++$i;
+        $ch = curl_init();
+        curl_setopt($ch, CURLOPT_URL, $url);
+        curl_setopt($ch, CURLOPT_POST, count($fields));
+        curl_setopt($ch, CURLOPT_POSTFIELDS, $fields_string);
+        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+        curl_setopt($ch, CURLOPT_ENCODING, 'UTF-8');
+        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
+        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
+        //curl_setopt($ch, CURLOPT_HEADER, true);
+        curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 15);
+        curl_setopt($ch, CURLOPT_USERAGENT, 'AndroidTranslate/5.3.0.RC02.130475354-53000263 5.1 phone TRANSLATE_OPM5_TEST_1');
+
+        $result   = curl_exec($ch);
+        $httpcode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
+
+        if (false === $result || 200 !== $httpcode) {
+            // echo $i,'/',$attempts,' Aborted, trying again... ',curl_error($ch),PHP_EOL;
+
+            if ($i >= $attempts) {
+                //echo 'Could not connect and get data.',PHP_EOL;
+                return;
+            //die('Could not connect and get data.'.PHP_EOL);
+            } else {
+                // timeout 1.5 sec
+                usleep(1500000);
+
+                return self::curlRequest($url, $fields, $fields_string, $i, $attempts);
+            }
+        } else {
+            return $result; //self::getBodyCurlResponse();
+        }
+        curl_close($ch);
+    }
+
+    /**
+     * Make string with post data fields.
+     *
+     * @param array $fields
+     *
+     * @return string
+     */
+    protected static function fieldsString($fields)
+    {
+        $fields_string = '';
+        foreach ($fields as $key => $value) {
+            $fields_string .= $key.'='.$value.'&';
+        }
+
+        return rtrim($fields_string, '&');
+    }
+}
diff --git a/src/Controllers/TranslatorController.php b/src/Controllers/TranslatorController.php
@@ -11,7 +11,7 @@ class TranslatorController extends Controller
     private $user = null;
     private $helper;
 
-    private $app_id = null;
+    private $app_id  = null;
     private $app_key = null;
 
     public function __construct()
@@ -31,18 +31,19 @@ public function create($form_data, $page, $plugin_settings)
     {
         // set a default select box value to the form
         // any better idea than change the $_GET?
-        $_GET['translate_to'] = $_COOKIE['translate_to'] ?? $this->helper->s('template.frontend_language');
+        $_GET['translate_to']   = $_COOKIE['translate_to'] ?? $this->helper->s('template.frontend_language');
         $data['translate_from'] = $_COOKIE['translate_from'] ?? 'en';
 
         $_GET['append_source_content'] = $_COOKIE['append_source_content'] ?? 'yes';
 
         $_GET['translate_result_add_to_field'] = $_COOKIE['translate_result_add_to_field'] ?? 'main_content';
 
-        if ($plugin_settings['api_provider'] == 'baidu') {
-            $data['translate_languages'] = ["en"=>"English", "zh"=>"Chinese", "epa"=>"Spanish", "ara"=>"Arabic", "jp"=>"Japanese", "hi"=>"Hindi", "pt"=>"Portuguese", "fra"=>"French", "ru"=>"Russian", "de"=>"German", "kor"=>"Korean", "it"=>"Italian", "th"=>"Thai"];
+        if ('baidu' == strtolower($plugin_settings['api_provider'])) {
+            $data['translate_languages'] = ['en'=>'English', 'zh'=>'Chinese', 'epa'=>'Spanish', 'ara'=>'Arabic', 'jp'=>'Japanese', 'hi'=>'Hindi', 'pt'=>'Portuguese', 'fra'=>'French', 'ru'=>'Russian', 'de'=>'German', 'kor'=>'Korean', 'it'=>'Italian', 'th'=>'Thai'];
         } else {
-            $data['translate_languages'] = ["en"=>"English", "zh"=>"Chinese", "es"=>"Spanish", "ar"=>"Arabic", "ja"=>"Japanese", "hi"=>"Hindi", "pt"=>"Portuguese", "fr"=>"French", "ru"=>"Russian", "de"=>"German", "ko"=>"Korean", "it"=>"Italian", "la"=>"Latin"];
+            $data['translate_languages'] = ['en'=>'English', 'zh'=>'Chinese', 'es'=>'Spanish', 'ar'=>'Arabic', 'ja'=>'Japanese', 'hi'=>'Hindi', 'pt'=>'Portuguese', 'fr'=>'French', 'ru'=>'Russian', 'de'=>'German', 'ko'=>'Korean', 'it'=>'Italian', 'la'=>'Latin'];
         }
+
         return $data;
     }
 
@@ -56,11 +57,12 @@ public function edit($id, $page, $plugin_settings)
 
         $page->translate_result_add_to_field = $_COOKIE['translate_result_add_to_field'] ?? 'main_content';
 
-        if ($plugin_settings['api_provider'] == 'baidu') {
-            $data['translate_languages'] = ["en"=>"English", "zh"=>"Chinese", "epa"=>"Spanish", "ara"=>"Arabic", "jp"=>"Japanese", "hi"=>"Hindi", "pt"=>"Portuguese", "fra"=>"French", "ru"=>"Russian", "de"=>"German", "kor"=>"Korean", "it"=>"Italian", "th"=>"Thai"];
+        if ('baidu' == strtolower($plugin_settings['api_provider'])) {
+            $data['translate_languages'] = ['en'=>'English', 'zh'=>'Chinese', 'epa'=>'Spanish', 'ara'=>'Arabic', 'jp'=>'Japanese', 'hi'=>'Hindi', 'pt'=>'Portuguese', 'fra'=>'French', 'ru'=>'Russian', 'de'=>'German', 'kor'=>'Korean', 'it'=>'Italian', 'th'=>'Thai'];
         } else {
-            $data['translate_languages'] = ["en"=>"English", "zh"=>"Chinese", "es"=>"Spanish", "ar"=>"Arabic", "ja"=>"Japanese", "hi"=>"Hindi", "pt"=>"Portuguese", "fr"=>"French", "ru"=>"Russian", "de"=>"German", "ko"=>"Korean", "it"=>"Italian", "la"=>"Latin"];
+            $data['translate_languages'] = ['en'=>'English', 'zh'=>'Chinese', 'es'=>'Spanish', 'ar'=>'Arabic', 'ja'=>'Japanese', 'hi'=>'Hindi', 'pt'=>'Portuguese', 'fr'=>'French', 'ru'=>'Russian', 'de'=>'German', 'ko'=>'Korean', 'it'=>'Italian', 'la'=>'Latin'];
         }
+
         return $data;
     }
 
@@ -71,34 +73,60 @@ public function store($form_data, $page, $plugin_settings)
 
     public function update($form_data, $page, $plugin_settings)
     {
-        if (trim($form_data['translate_content']) == '') {
+        if ('' == trim($form_data['translate_content'])) {
             return false;
         }
-        if ($plugin_settings['api_provider'] == 'baidu') {
-            $this->app_id = $plugin_settings['app_id'];
+        if ('baidu' == $plugin_settings['api_provider']) {
+            $this->app_id  = $plugin_settings['app_id'];
             $this->app_key = $plugin_settings['app_key'];
 
             $api_result = $this->baiduTranslate($form_data['translate_content'], $form_data['translate_from'], $form_data['translate_to']);
             if (isset($api_result['trans_result'][0]['dst'])) {
                 $translate_result = '<div class="translate-content">';
                 foreach ($api_result['trans_result'] as $rs) {
-                    if ($form_data['append_source_content'] == 'yes') {
-                        $translate_result .= '<div class="src">' . $rs['src'] . '</div>';
+                    if ('yes' == $form_data['append_source_content']) {
+                        $translate_result .= '<div class="src">'.$rs['src'].'</div>';
                     }
-                    $translate_result .= '' . $rs['dst'] . '<br/><br/>';
+                    $translate_result .= ''.$rs['dst'].'<br/><br/>';
                 }
                 $translate_result .= '</div>';
-                $new_content = $page[$form_data['translate_result_add_to_field']] . $translate_result;
+                $new_content = $page[$form_data['translate_result_add_to_field']].$translate_result;
             } else {
                 if (request()->debug) {
                     $this->helper->debug($api_result);
                 }
+
                 return false;
             }
-        }
+        } elseif ('google_free' == $plugin_settings['api_provider']) {
+            if ('google_free_002' == $plugin_settings['app_key']) {
+                // https://github.com/Stichoza/google-translate-php
+                // Need the end-user install via composer first
 
+                $tr         = new \Stichoza\GoogleTranslate\GoogleTranslate($form_data['translate_to'], $form_data['translate_from'], ['verify' => false]);
+                $api_result = $tr->translate($form_data['translate_content']);
+            } else {
+                // https://github.com/dejurin/php-google-translate-for-free
+                // Need copy the class code to the GoogleTranslateForFree.php
 
-        // $this->helper->debug($api_result);
+                $tr         = new GoogleTranslateForFree();
+                $api_result = $tr->translate($form_data['translate_from'], $form_data['translate_to'], $form_data['translate_content'], 2).$plugin_settings['app_key'];
+            }
+
+            if ($api_result) {
+                $translate_result = '<div class="translate-content">'.nl2br($api_result).'</div>';
+
+                if ('yes' == $form_data['append_source_content']) {
+                    $translate_result .= '<div class="pt-3 source-content"><hr class="source-hr" />'.nl2br($form_data['translate_content']).'</div>';
+                }
+
+                $new_content = $page[$form_data['translate_result_add_to_field']].$translate_result;
+            }
+
+            $this->helper->debug([$new_content, $form_data]);
+        }
+
+        $this->helper->debug($api_result);
         if (isset($new_content)) {
             $page->update([$form_data['translate_result_add_to_field']=>$new_content]);
         }
@@ -120,14 +148,13 @@ public function update($form_data, $page, $plugin_settings)
      * Other methods.
      */
 
-
     // baidu FanYi translate
     public function baiduTranslate($query, $from, $to)
     {
         $app_id  = $this->app_id;
         $app_key = $this->app_key;
         if (strlen($app_id) < 10 || strlen($app_key) < 10) {
-            exit("Please edit the app_id & app_key in the translator plugin setting page, you can get them from https://api.fanyi.baidu.com/");
+            exit('Please edit the app_id & app_key in the translator plugin setting page, you can get them from https://api.fanyi.baidu.com/');
         }
 
         $args = [
@@ -153,8 +180,6 @@ public function buildSign($query, $appID, $salt, $secKey)
         return $ret;
     }
 
-
-
     //发起网络请求
     public function baiduCall($url, $args=null, $method='post', $testflag = 0, $timeout = 10, $headers=[])
     {
@@ -174,8 +199,6 @@ public function baiduCall($url, $args=null, $method='post', $testflag = 0, $time
         return $ret;
     }
 
-
-
     public function baiduCallOnce($url, $args=null, $method='post', $withCookie = false, $timeout = 10, $headers=[])
     {
         $ch = curl_init();
@@ -208,8 +231,6 @@ public function baiduCallOnce($url, $args=null, $method='post', $withCookie = fa
         return $r;
     }
 
-
-
     public function baiduConvert(&$args)
     {
         $data = '';
diff --git a/src/database/migrations/2020_01_19_114400_update_plugin_settings_table.php b/src/database/migrations/2020_01_19_114400_update_plugin_settings_table.php
@@ -30,11 +30,9 @@ public function up()
     "blade_file": "translator",
     "tab_name": "<i class=\'fas fa-language mr-1\'></i>__(translator)",
     "php_class": "App\\\\LaravelCms\\\\Plugins\\\\Translator\\\\Controllers\\\\TranslatorController",
-    "api_provider": "baidu",
-    "app_id": "",
-    "app_key": "",
-    "append_source_content": "yes"
-
+    "api_provider": "google_free",
+    "app_id": "google_free_001",
+    "app_key": "google_free_002"
 }',
         ];
         LaravelCmsSetting::UpdateOrCreate(
diff --git a/src/resources/views/plugins/page-tab-translator/translator.blade.php b/src/resources/views/plugins/page-tab-translator/translator.blade.php
