Handle google translate max character limit 5000

Author: AlexStack

README.md

@@ -1,7 +1,7 @@
 # Translate content online by Baidu AI or Google AI
 
 -   This is an Amila Laravel CMS Plugin
--   Automatically translate content online via Baidu FanYi API or Google Translate API
+-   Automatically translate content online via Baidu FanYi API or Google Translate API or Google Translate Free Version
 
 ## Install it via the backend
 
@@ -66,7 +66,7 @@ php artisan laravelcms --action=clear
 
 ```json
 {
-    "api_provider": "google",
+    "api_provider": "google", // NOT SUPPORT YET
     "app_id": "AizSxUKysHBsds2", // Translation API KEY
     "app_key": "AizSxUKysHBsds2" // Translation API KEY
 }
@@ -95,6 +95,8 @@ php artisan laravelcms --action=clear
 }
 ```
 
+-   Limitations of free Google translate: (1) Google only allows a maximum of 5000 characters to be translated at once. If you want to translate a longer text, you can split it to shorter parts, and translate them one-by-one. (2) 503,429,403 error it is most likely that Google has banned your external IP address and/or requires you to solve a CAPTCHA. This is not a bug in this package. Google has become stricter, and it seems like they keep lowering the number of allowed requests per IP per a certain amount of time. You may need to wait 12-36 hours. [More details](https://github.com/Stichoza/google-translate-php#known-limitations)
+
 ## Improve this plugin & documents
 
 -   You are very welcome to improve this plugin and how to use documents

src/Controllers/TranslatorController.php

@@ -102,15 +102,25 @@ public function update($form_data, $page, $plugin_settings)
             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']);
+                try {
+                    $tr         = new \Stichoza\GoogleTranslate\GoogleTranslate($form_data['translate_to'], $form_data['translate_from'], ['verify' => false]);
+                    $api_result = $tr->translate($form_data['translate_content']);
+                } catch (\Exception $e) {
+                    exit($e->getMessage());
+                }
             } else {
                 // https://github.com/dejurin/php-google-translate-for-free
                 // Need copy the class code to the GoogleTranslateForFree.php
-
-                $tr         = new GoogleTranslateForFree();
-                $api_result = $tr->translate($form_data['translate_from'], $form_data['translate_to'], $form_data['translate_content'], 2);
+                try {
+                    $tr = new GoogleTranslateForFree();
+                    // google_free translate max character limit 5000
+                    if (strlen(urlencode($form_data['translate_content'])) >= 5000) {
+                        $form_data['translate_content'] = urldecode(substr(urlencode($form_data['translate_content']), 0, 4999));
+                    }
+                    $api_result = $tr->translate($form_data['translate_from'], $form_data['translate_to'], $form_data['translate_content'], 2).$plugin_settings['app_key'];
+                } catch (\Exception $e) {
+                    exit($e->getMessage());
+                }
             }
 
             if ($api_result) {

src/database/migrations/2020_01_19_114400_update_plugin_settings_table.php

@@ -27,13 +27,13 @@ public function up()
             'sort_value'      => 20,
             'abstract'        => 'Automatically translate content via Google AI or Baidu AI. <a href="https://github.com/AlexStack/Laravel-CMS-Plugin-Translator#where-can-i-get-the-app_id--app_key" target="_blank"><i class="fas fa-link mr-1"></i>Tutorial</a>',
             'param_value'     => '{
+    "api_provider": "Google_Free",
+    "app_id": "google_free_001",
+    "app_key": "google_free_001",                
     "plugin_name": "Content Translator",
     "blade_file": "translator",
     "tab_name": "<i class=\'fas fa-language mr-1\'></i>__(translator)",
-    "php_class": "App\\\\LaravelCms\\\\Plugins\\\\Translator\\\\Controllers\\\\TranslatorController",
-    "api_provider": "Google_Free",
-    "app_id": "google_free_001",
-    "app_key": "google_free_001"
+    "php_class": "App\\\\LaravelCms\\\\Plugins\\\\Translator\\\\Controllers\\\\TranslatorController"
 }',
         ];
         LaravelCmsSetting::UpdateOrCreate(