From b30be5b344e2ae5c0e242f488638fe415ccac4c4 Mon Sep 17 00:00:00 2001
From: Vincent LAURENT <vince.laurent@gmail.com>
Date: Thu, 20 Apr 2023 15:37:01 +0200
Subject: [PATCH] metadata: fields list by default define in configuration

---
 config/config.ini.example   |  3 +++
 public/js/metadata.js       | 27 +++++++++++++++++++++++----
 templates/metadata.html.php |  2 +-
 3 files changed, 27 insertions(+), 5 deletions(-)

diff --git a/config/config.ini.example b/config/config.ini.example
index ee6842a..7611cbd 100644
--- a/config/config.ini.example
+++ b/config/config.ini.example
@@ -9,3 +9,6 @@ PDF_STORAGE_PATH=/path/to/folder
 
 ; Manage demo link pdf : true (by default, show), false (hide), or custom link
 ;PDF_DEMO_LINK=true
+
+; Metadata default fields
+;METADATA_DEFAULT_FIELDS[metadata_key].type = "text"
diff --git a/public/js/metadata.js b/public/js/metadata.js
index b280fa0..4979ccb 100644
--- a/public/js/metadata.js
+++ b/public/js/metadata.js
@@ -33,18 +33,23 @@ var loadPDF = async function(pdfBlob, filename, pdfIndex) {
     await loadingTask.promise.then(function(pdf) {
         pdf.getMetadata().then(function(metadata) {
             console.log(metadata);
+            for(fieldKey in defaultFields) {
+                addMetadata(fieldKey, null, defaultFields[fieldKey]['type']);
+            }
+
             for(metaKey in metadata.info) {
                 if(metaKey == "Custom" || metaKey == "PDFFormatVersion" || metaKey.match(/^Is/) || metaKey == "Trapped") {
                     continue;
                 }
-                addMetadata(metaKey, metadata.info[metaKey]);
+                addMetadata(metaKey, metadata.info[metaKey], "text");
             }
+
             for(metaKey in metadata.info.Custom) {
                 if(metaKey == "sha256") {
                     continue;
                 }
 
-                addMetadata(metaKey, metadata.info.Custom[metaKey]);
+                addMetadata(metaKey, metadata.info.Custom[metaKey], "text");
             }
 
             for(let pageNumber = 1; pageNumber <= pdf.numPages; pageNumber++ ) {
@@ -89,12 +94,26 @@ var pageRender = async function(pageIndex) {
   });
 }
 
-var addMetadata = function(key, value) {
+var addMetadata = function(key, value, type) {
+    let input = document.querySelector('.input-metadata input[name="'+key+'"]');
+
+    if(input && input.value === null) {
+        input.value = value;
+        return;
+    }
+
+    if(input) {
+        input.focus();
+        return;
+    }
+
     let div = document.createElement('div');
     div.classList.add('form-floating', 'mt-3', 'input-metadata');
 
-    let input = document.createElement('input');
+    input = document.createElement('input');
     input.value = value;
+    input.type = type;
+    input.name = key;
     input.classList.add('form-control');
 
     let label = document.createElement('label');
diff --git a/templates/metadata.html.php b/templates/metadata.html.php
index 1ceac5c..a868f2a 100644
--- a/templates/metadata.html.php
+++ b/templates/metadata.html.php
@@ -100,7 +100,7 @@
     <script src="/vendor/pdf.js?legacy"></script>
     <script src="/vendor/pdf-lib.min.js?1.17.1"></script>
     <script>
-    var maxSize = <?php echo $maxSize ?>;
+    var defaultFields = <?php echo json_encode(isset($METADATA_DEFAULT_FIELDS) ? $METADATA_DEFAULT_FIELDS : array()); ?>;
     </script>
     <script src="/js/metadata.js?202212070154"></script>
   </body>