From ba930d034c33044d22fda3d58b4d192a4791eb28 Mon Sep 17 00:00:00 2001
From: Tangui Morlier <tangui@tangui.eu.org>
Date: Thu, 22 Aug 2024 18:03:16 +0200
Subject: [PATCH] Allow to edit the metadata of a pdf stored on the server

---
 app.php                   | 37 +++++++++++++++++++++++++++++++++++++
 config/config.ini.example |  3 +++
 public/js/metadata.js     | 22 +++++++++++++++++++---
 3 files changed, 59 insertions(+), 3 deletions(-)

diff --git a/app.php b/app.php
index ab303d9..f4793a1 100644
--- a/app.php
+++ b/app.php
@@ -443,6 +443,43 @@ $f3->route ('POST /compress',
     }
 );
 
+$f3->route('GET /api/file/get', function($f3) {
+    $localRootFolder = $f3->get('PDF_LOCAL_PATH');
+    if (!$localRootFolder) {
+        $f3->error(403);
+    }
+    $pdf_path = $localRootFolder . '/' . $f3->get('GET.path');
+    $pdf_filename = basename($pdf_path);
+    if (!preg_match('/.pdf$/', $pdf_path)) {
+        $f3->error(403);
+    }
+    if (!file_exists($pdf_path)) {
+        $f3->error(403);
+    }
+    header('Content-type: application/pdf');
+    header("Content-Disposition: attachment; filename=$pdf_filename");
+    echo file_get_contents($pdf_path);
+});
+
+$f3->route('PUT /api/file/save', function($f3) {
+    $localRootFolder = $f3->get('PDF_LOCAL_PATH');
+    if (!$localRootFolder) {
+        $f3->error(403);
+    }
+    $pdf_path = $localRootFolder . '/' . $f3->get('GET.path');
+    $pdf_filename = basename($pdf_path);
+    if (!preg_match('/.pdf$/', $pdf_path)) {
+        $f3->error(403);
+    }
+    if (!file_exists($pdf_path)) {
+        $f3->error(403);
+    }
+    file_put_contents($pdf_path, $f3->get('BODY'));
+
+});
+
+
+
 function getCommit() {
     if(!file_exists(__DIR__.'/.git/HEAD')) {
 
diff --git a/config/config.ini.example b/config/config.ini.example
index dff71c6..075c455 100644
--- a/config/config.ini.example
+++ b/config/config.ini.example
@@ -26,3 +26,6 @@ PDF_STORAGE_PATH=/path/to/folder
 
 ; Authorize these IP to use debug mode (separate IP adresses with space ' ')
 ;ADMIN_AUTHORIZED_IP=
+
+; Enable the edition of local server pdf metadata
+; PDF_LOCAL_PATH=/path/to/pdf/metadata/edition
diff --git a/public/js/metadata.js b/public/js/metadata.js
index 990ca40..8374fc2 100644
--- a/public/js/metadata.js
+++ b/public/js/metadata.js
@@ -179,6 +179,15 @@ const save = async function () {
     });
 
     const newPDF = new Blob([await pdf.save()], {type: "application/pdf"});
+
+    if(window.location.hash && window.location.hash.match(/^\#local/)) {
+        let apiUrl = window.location.origin + "/api/file/save?path=" + window.location.hash.replace(/^\#local:/, '');
+        fetch(apiUrl, {
+          method: 'PUT',
+          body: newPDF,
+        });
+        return ;
+    }
     DL(newPDF, filename)
 }
 
@@ -220,7 +229,7 @@ async function getPDFBlobFromCache(cacheUrl) {
     return pdfBlob;
 }
 
-async function uploadFromUrl(url) {
+async function uploadFromUrl(url, local = null) {
     history.replaceState({}, '', '/metadata');
     var response = await fetch(url);
     if(response.status != 200) {
@@ -232,8 +241,11 @@ async function uploadFromUrl(url) {
         return;
     }
     let dataTransfer = new DataTransfer();
-    let filename = url.replace(/^.*\//, '');
-    dataTransfer.items.add(new File([pdfBlob], filename, {
+    let file_id = url.replace(/^.*\//, '');
+    if (local) {
+        file_id = local;
+    }
+    dataTransfer.items.add(new File([pdfBlob], file_id, {
         type: 'application/pdf'
     }));
     document.getElementById('input_pdf_upload').files = dataTransfer.files;
@@ -289,6 +301,10 @@ var pageMetadata = async function(url) {
         let hashUrl = window.location.hash.replace(/^\#/, '');
         pageUpload();
         uploadFromUrl(hashUrl);
+    } else if(window.location.hash && window.location.hash.match(/^\#local/)) {
+        let hashUrl = window.location.origin + "/api/file/get?path=" + window.location.hash.replace(/^\#local:/, '');
+        pageUpload();
+        uploadFromUrl(hashUrl, window.location.hash.replace(/^\#/, ''));
     } else if(window.location.hash) {
         pageMetadata('/pdf/'+window.location.hash.replace(/^\#/, ''));
     } else {