fixed all errors on local upload, now testing cloud uploads

.gitignore

 uploads/*
 vendor
+index.php

application/config/config.php

@@ -523,3 +523,15 @@ $config['rewrite_short_tags'] = FALSE;
 | Array:		array('10.0.1.200', '192.168.5.0/24')
 */
 $config['proxy_ips'] = '';
+
+/* ------------------------------------------------------------------
+| Configuration of the upload helper for enabling user uploads
+| 
+| amontejo@ujaen.es - 2020
+--------------------------------------------------------------------*/
+
+// Destination storage path (don't forget trailing '/')
+$config['upload_path'] = ENVIRONMENT == 'production' ? 'gs://wbt2020.appspot.com/uploads/' : './uploads/';
+
+// Prefix for building public URL to the uploaded file
+$config['upload_prefix'] = ENVIRONMENT == 'production' ? 'https://storage.cloud.google.com/uploads/' : $config['base_url'] . 'uploads/';
\ No newline at end of file

application/controllers/Upload.php

 <?php
-
+/*
+| This is an example controller to show how to use upload helper
+| amontejo@ujaen.es - 2020
+*/
 class Upload extends CI_Controller {
 
     function __construct ()  {
@@ -8,12 +11,8 @@ class Upload extends CI_Controller {
 
     public function upload() {      
         $this->load->helper('upload');
-        //if (ENVIRONMENT == 'production') {
-        //    $url = upload_to_bucket('wbt2020.appspot.com', 'uploads');
-        //} else {
-            $url = upload_to_local('./uploads');
-        //}
-        $this->load->view('upload', array('img_url' => $url));
+        $fileurl = upload_file();
+        $this->load->view('upload', array('img_url' => $fileurl));
     }
 
 }
\ No newline at end of file

application/helpers/upload_helper.php

 <?php
 /*
-require 'vendor/autoload.php';
-use Google\Cloud\Storage\StorageClient;
-
-// Store file in $path in the bucket $bucket_name
-function upload_to_bucket ($bucket_name, $path) {
+| This is the upload helper
+| amontejo@ujaen.es - 2020
+*/
 
-    if(isset($_FILES['file'])) {
-        
-        // Authentication with Google Cloud Platform
-        $storage = new StorageClient();
-        $bucket = $storage->bucket($bucket_name);
-        
-        // Upload a file to the bucket.
-        $file = pathinfo($_FILES['file']['name']);
-        $prefix = uniqid('uploaded_', true); //generate random string to avoid name conflicts
-        $filename = $path . '/' . $prefix . "." . $file['extension'];
-        $bucket->upload(
-            fopen($_FILES['file']['tmp_name'], 'r'),
-            ['name' => $filename]
-        );  
-        return ('https://storage.cloud.google.com/'.$bucket_name.'/'.$filename);
-        
-    }  
-}
+/*
+    This function will check if there is a input POST 'file' item. 
+    If so, it will save the file to the path specified by the
+    'upload_path' config parameter set at config/config.php 
+    
+    It returns the public URL path to the uploaded file, which is defined
+    in the 'upload_prefix' config parameter.
 */
-// upload a file to local server filesystem
-function upload_to_local ($path) {
+function upload_file () {
+    
     if(isset($_FILES['file'])) {
-        $config['upload_path']          = 'gs://wbt2020.appspot.com/uploads/';//$path;
+        $ci =& get_instance();
+        $config['upload_path']          = $ci->config->item('upload_path');
         $config['allowed_types']        = 'gif|jpg|png';
         $config['max_size']             = 20480; // Max file size: 20480 = 20M
         $config['max_width']            = 2048;
         $config['max_height']           = 2048;
         $config['encrypt_name']         = TRUE;
 
-        $ci =& get_instance();
         $ci->load->library('upload', $config);
-
         if ( ! $ci->upload->do_upload('file'))
             return NULL;
         else
-            return base_url('uploads/').$ci->upload->data('file_name');
+            return $ci->config->item('upload_prefix') . $ci->upload->data('file_name');
     }
 }
\ No newline at end of file

application/views/upload.php

+<?php
+/*
+| This is an example view to show how to use upload helper
+| amontejo@ujaen.es - 2020
+*/
+?>
 <form id="fileForm" action="<?= base_url('index.php/upload/upload') ?>" method="post" enctype="multipart/form-data">
     <div class="form-row">
         <br/>

index.php

@@ -53,7 +53,7 @@
  *
  * NOTE: If you change these, also change the error_reporting() code below
  */
-	define('ENVIRONMENT', isset($_SERVER['CI_ENV']) ? $_SERVER['CI_ENV'] : 'production');
+	define('ENVIRONMENT', isset($_SERVER['CI_ENV']) ? $_SERVER['CI_ENV'] : 'development');
 
 /*
  *---------------------------------------------------------------