Finishing up OPS image API integration to display PDF images

site/ops_api.php

@@ -61,7 +61,30 @@ function get_publication_details($document_reference) {
 
 }
 
-function get_images($document_reference) {
+function check_for_images($document_reference) {
+
+  $access_token = get_access_token();
+
+  // OPS API credentials (details at http://documents.epo.org/projects/babylon/eponet.nsf/0/F3ECDCC915C9BCD8C1258060003AA712/$File/ops_v3.2_documentation_-_version_1.3.16_en.pdf)
+  $ops_url = $_ENV["OPS_URL"] . 'rest-services/published-data/publication/epodoc/' . $document_reference . '/images';
+
+  // Set up API call
+  $ch = curl_init();
+  curl_setopt($ch, CURLOPT_URL, $ops_url);
+  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+  curl_setopt($ch, CURLOPT_HTTPHEADER, array("Authorization: Bearer $access_token"));
+
+  // Give back curl result
+  $response = curl_exec($ch);
+  curl_close($ch);
+
+  if (strpos($response,"No results found") === false ) {
+    return $response;
+  }
+
+}
+
+function get_images($document_reference){
 
   $access_token = get_access_token();
 
@@ -90,15 +113,14 @@ function get_images($document_reference) {
     $ch = curl_init();
     curl_setopt($ch, CURLOPT_URL, $drawings_url);
     curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
-    curl_setopt($ch, CURLOPT_HTTPHEADER, array("Authorization: Bearer $access_token"));
+    curl_setopt($ch, CURLOPT_HTTPHEADER, array("Authorization: Bearer $access_token","Accept: application/pdf"));
 
     // Give back curl result
     $response = curl_exec($ch);
     curl_close($ch);
 
-    //Display the image in the browser
-    header('Content-type: image/jpeg');
-    echo $response;
+    // Return the PDF response
+    return $response;
 
   }
 

site/public/index.php

@@ -92,16 +92,14 @@ echo $random_record['abstract'];
 
 <?php
 
-  //if (get_images($random_record['doc_ref'])):
+  if (check_for_images($random_record['doc_ref'])):
 
 ?>
 
-<!-- TO DO: RESOLVE WHY NGINX DOESN'T DISPLAY ANY OTHER PAGES IN THE PUBLIC DIRECTORY INCLUDING THESE TWO-->
-
 <a href="./ops_image.php?doc_ref=<?php echo $random_record['doc_ref'] ?>">Click here for image</a>
 
 <br><br>
 
 <?php
-  //endif;
+  endif;
 ?>

site/public/ops_image.php

@@ -15,44 +15,11 @@ include '../ops_api.php';
 
 if(isset($_GET["doc_ref"])){
 
-  $access_token = get_access_token();
+  $image_output = get_images($_GET["doc_ref"]);
 
-  // OPS API credentials (details at http://documents.epo.org/projects/babylon/eponet.nsf/0/F3ECDCC915C9BCD8C1258060003AA712/$File/ops_v3.2_documentation_-_version_1.3.16_en.pdf)
-  $ops_url = $_ENV["OPS_URL"] . 'rest-services/published-data/publication/epodoc/' . $document_reference . '/images';
-
-  // Set up API call
-  $ch = curl_init();
-  curl_setopt($ch, CURLOPT_URL, $ops_url);
-  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
-  curl_setopt($ch, CURLOPT_HTTPHEADER, array("Authorization: Bearer $access_token"));
-
-  // Give back curl result
-  $response = curl_exec($ch);
-  curl_close($ch);
-
-  if (strpos($response,"No results found") === false ) {
-
-		// Turn the API response into useful XML
-		$xml = new SimpleXMLElement($response);
-
-    // Retrieve image path from that XML
-    $drawings_url = $_ENV["OPS_URL_IMAGES"] . '3.2/rest-services/' . $xml->xpath("///ops:document-instance[@desc='Drawing']/@link")[0][0]->__toString() . '?Range=1';
-
-    // Set up API call
-    $ch = curl_init();
-    curl_setopt($ch, CURLOPT_URL, $drawings_url);
-    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
-    curl_setopt($ch, CURLOPT_HTTPHEADER, array("Authorization: Bearer $access_token"));
-
-    // Give back curl result
-    $response = curl_exec($ch);
-    curl_close($ch);
-
-    //Display the image in the browser
-    header('Content-type: image/jpeg');
-    echo $response;
-
-  }
+  //Display the image in the browser
+  header('Content-type: application/pdf');
+  echo $image_output;
 
 }