Merge pull request #11 from labomatik/ability-to-encrypt-body

Ability to encrypt automatically message's body

Author: kajal-7span

README.md

@@ -64,7 +64,7 @@ php artisan migrate
 To configure message body encryption add these key on `.env` file.
 
 ```
-CHAT_ENCRYPT_MESSAGE=true #boolen
+CHAT_ENCRYPT_MESSAGE=true #boolean
 ```
 
 ## Usage

config/chat.php

@@ -14,5 +14,6 @@
     'media_folder' => env('CHAT_MEDIA_FOLDER', 'image'),
     'pusher_event_trigger' => [
         'send_message' => env('CHAT_SEND_MESSAGE_PUSHER_EVENT', true)
-    ]
+    ],
+    'encrypt_message' => env('CHAT_ENCRYPT_MESSAGE', false),
 ];

src/Helpers/Helper.php

@@ -6,7 +6,9 @@
 
 use Illuminate\Support\Str;
 use Illuminate\Support\Facades\File;
+use Illuminate\Support\Facades\Crypt;
 use Illuminate\Support\Facades\Storage;
+use Illuminate\Contracts\Encryption\DecryptException;
 
 class Helper
 {
@@ -63,4 +65,14 @@ public static function fileDelete($disk, $path, $fileName)
             return true;
         }
     }
+
+    public static function isEncrypted($value)
+    {
+        try {
+            Crypt::decryptString($value);
+            return true;
+        } catch (DecryptException $e) {
+            return false;
+        }
+    }
 }

src/Models/Message.php

@@ -3,9 +3,12 @@
 namespace SevenSpan\Chat\Models;
 
 use App\Models\User;
+use SevenSpan\Chat\Helpers\Helper;
+use Illuminate\Support\Facades\Crypt;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Support\Facades\Storage;
 use Illuminate\Database\Eloquent\SoftDeletes;
+use Illuminate\Database\Eloquent\Casts\Attribute;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 
 class Message extends Model
@@ -73,4 +76,32 @@ public function variables()
     {
         return $this->hasMany(MessageVariable::class, 'message_id', 'id');
     }
+
+    /**
+     * Get the attributes that should be cast.
+     *
+     * @return array<string, string>
+     */
+    protected function casts(): array
+    {
+        if(config('chat.encrypt_message')) {
+            return [
+                'body' => 'encrypted',
+            ];
+        }else {
+            return [
+                'body' => 'string',
+            ];
+        }
+    }
+
+   
+    protected function body(): Attribute
+    {
+        return Attribute::make(
+            get: function (string $value) {
+                return Helper::isEncrypted($value) ? Crypt::decryptString($value) : $value;
+            }
+        );
+    }
 }