Add ng-file-upload handler (#39)

* Add ng-file-upload handler

* Update readme for the support of ng-file-upload

* Add unit test for NgFileUpload handler

* Fix ngfileupload integer params verification

Author: L3o-pold

phpunit.xml

@@ -7,7 +7,8 @@
          convertWarningsToExceptions="true"
          processIsolation="false"
          stopOnFailure="false"
-         syntaxCheck="false">
+         syntaxCheck="false"
+         bootstrap="vendor/autoload.php">
     <testsuites>
         <testsuite name="Application Test Suite">
             <directory>./tests/</directory>

readme.md

@@ -47,6 +47,7 @@ Setup is composed in 3 steps:
 | [jQuery-File-Upload](https://github.com/blueimp/jQuery-File-Upload) | [Wiki](https://github.com/pionl/laravel-chunk-upload/wiki/blueimp-file-upload)  | :heavy_check_mark: | :heavy_multiplication_x: |
 | [Plupload](https://github.com/moxiecode/plupload) | [Wiki](https://github.com/pionl/laravel-chunk-upload/wiki/plupload) | :heavy_check_mark: | :heavy_multiplication_x: |
 | [simple uploader](https://github.com/simple-uploader) | :heavy_multiplication_x: | :heavy_check_mark: | :heavy_multiplication_x: |
+| [ng-file-upload](https://github.com/danialfarid/ng-file-upload) | :heavy_multiplication_x: | :heavy_check_mark: | :heavy_multiplication_x: |
 
 For more detailed information (tips) use the [Wiki](https://github.com/pionl/laravel-chunk-upload/wiki) or for working example continue to separate repository with [example](https://github.com/pionl/laravel-chunk-upload-example).
 

src/Exceptions/ChunkInvalidValueException.php

@@ -0,0 +1,28 @@
+<?php
+
+namespace Pion\Laravel\ChunkUpload\Exceptions;
+
+use Exception;
+
+/**
+ * Class ChunkInvalidValueException
+ *
+ * @package Pion\Laravel\ChunkUpload\Exception
+ */
+class ChunkInvalidValueException extends \Exception
+{
+    /**
+     * ChunkInvalidValueException constructor.
+     *
+     * @param string         $message
+     * @param int            $code
+     * @param Exception|null $previous
+     */
+    public function __construct(
+        $message = 'The chunk parameters are invalid',
+        $code = 500,
+        Exception $previous = null
+    ) {
+        parent::__construct($message, $code, $previous);
+    }
+}

src/Handler/ChunksInRequestSimpleUploadHandler.php

@@ -1,7 +1,6 @@
 <?php
 namespace Pion\Laravel\ChunkUpload\Handler;
 
-
 /**
  * Class ChunksInRequestSimpleUploadHandler
  *

src/Handler/HandlerFactory.php

@@ -14,7 +14,8 @@ class HandlerFactory
         ChunksInRequestUploadHandler::class,
         ResumableJSUploadHandler::class,
         DropZoneUploadHandler::class,
-        ChunksInRequestSimpleUploadHandler::class
+        ChunksInRequestSimpleUploadHandler::class,
+        NgFileUploadHandler::class,
     );
 
     /**

src/Handler/NgFileUploadHandler.php

@@ -0,0 +1,131 @@
+<?php
+
+namespace Pion\Laravel\ChunkUpload\Handler;
+
+use Pion\Laravel\ChunkUpload\Exceptions\ChunkInvalidValueException;
+use Illuminate\Http\Request;
+
+/**
+ * Class NgFileUploadHandler
+ *
+ * Upload receiver that detects the content range from he request value - chunks
+ * Works with:
+ * - ng-file-upload: https://github.com/danialfarid/ng-file-upload
+ *
+ * @package Pion\Laravel\ChunkUpload\Handler
+ */
+class NgFileUploadHandler extends ChunksInRequestUploadHandler
+{
+
+    /**
+     * Key for number of sending chunk
+     *
+     * @static string
+     */
+    const KEY_CHUNK_NUMBER = '_chunkNumber';
+
+    /**
+     * Key for total size of all chunks
+     *
+     * @static string
+     */
+    const KEY_TOTAL_SIZE = '_totalSize';
+
+    /**
+     * Key for every chunk size
+     *
+     * @static string
+     */
+    const KEY_CHUNK_SIZE = '_chunkSize';
+
+    /**
+     * Key for current chunk size
+     *
+     * @static string
+     */
+    const KEY_CHUNK_CURRENT_SIZE = '_currentChunkSize';
+
+    /**
+     * Determines if the upload is via chunked upload
+     *
+     * @var bool
+     */
+    protected $chunkedUpload = false;
+
+    /**
+     * Checks if the current handler can be used via HandlerFactory
+     *
+     * @param Request $request
+     *
+     * @return bool
+     * @throws ChunkInvalidValueException
+     */
+    public static function canBeUsedForRequest(Request $request)
+    {
+        $hasChunkParams = $request->has(static::KEY_CHUNK_NUMBER)
+                          && $request->has(static::KEY_TOTAL_SIZE)
+                          && $request->has(static::KEY_CHUNK_SIZE)
+                          && $request->has(static::KEY_CHUNK_CURRENT_SIZE);
+
+        return $hasChunkParams && self::checkChunkParams($request);
+    }
+
+    /**
+     * @return int
+     */
+    public function getPercentageDone()
+    {
+        // Check that we have received total chunks
+        if (!$this->chunksTotal) {
+            return 0;
+        }
+
+        return intval(parent::getPercentageDone());
+    }
+
+    /**
+     * @param Request $request
+     *
+     * @return bool
+     * @throws ChunkInvalidValueException
+     */
+    protected static function checkChunkParams($request)
+    {
+        $isInteger = ctype_digit($request->input(static::KEY_CHUNK_NUMBER))
+                     && ctype_digit($request->input(static::KEY_TOTAL_SIZE))
+                     && ctype_digit($request->input(static::KEY_CHUNK_SIZE))
+                     && ctype_digit($request->input(static::KEY_CHUNK_CURRENT_SIZE));
+
+        if ($request->get(static::KEY_CHUNK_SIZE) < $request->get(static::KEY_CHUNK_CURRENT_SIZE)) {
+            throw new ChunkInvalidValueException();
+        }
+
+        if ($request->get(static::KEY_CHUNK_NUMBER) < 0) {
+            throw new ChunkInvalidValueException();
+        }
+
+        if ($request->get(static::KEY_TOTAL_SIZE) < 0) {
+            throw new ChunkInvalidValueException();
+        }
+
+        return $isInteger;
+    }
+
+    /**
+     * Returns current chunk from the request
+     *
+     * @param Request $request
+     *
+     * @return int
+     */
+    protected function getTotalChunksFromRequest(Request $request)
+    {
+        if (!$request->get(static::KEY_CHUNK_SIZE)) {
+            return 0;
+        }
+
+        return intval(
+            ceil($request->get(static::KEY_TOTAL_SIZE) / $request->get(static::KEY_CHUNK_SIZE))
+        );
+    }
+}

src/Handler/SingleUploadHandler.php

@@ -25,7 +25,7 @@ class SingleUploadHandler extends AbstractHandler
      */
     public function startSaving($chunkStorage)
     {
-        return new SingleSave($this->file, $this,  $this->config);
+        return new SingleSave($this->file, $this, $this->config);
     }
 
     /**