From 18a9eb43c307d5820db1ff9e4582e6e91caf2d55 Mon Sep 17 00:00:00 2001
From: Julien Veyssier <eneiluj@posteo.net>
Date: Wed, 24 Apr 2019 17:50:06 +0200
Subject: [PATCH] photo context menu: reset coordinates

Signed-off-by: Julien Veyssier <eneiluj@posteo.net>
---
 appinfo/routes.php                  |  1 +
 js/photosController.js              | 44 ++++++++++++++++++++++++++
 lib/Controller/PhotosController.php |  8 +++++
 lib/Service/PhotofilesService.php   | 49 ++++++++++++++++++++++++++++-
 4 files changed, 101 insertions(+), 1 deletion(-)

diff --git a/appinfo/routes.php b/appinfo/routes.php
index e9f7b536..e4948c65 100644
--- a/appinfo/routes.php
+++ b/appinfo/routes.php
@@ -22,6 +22,7 @@ return [
         ['name' => 'photos#getPhotosFromDb', 'url' => '/photos', 'verb' => 'GET'],
         ['name' => 'photos#getNonLocalizedPhotosFromDb', 'url' => '/photos/nonlocalized', 'verb' => 'GET'],
         ['name' => 'photos#placePhotos', 'url' => '/photos', 'verb' => 'POST'],
+        ['name' => 'photos#resetPhotosCoords', 'url' => '/photos', 'verb' => 'DELETE'],
 
         // contacts
         ['name' => 'contacts#getContacts', 'url' => '/contacts', 'verb' => 'GET'],
diff --git a/js/photosController.js b/js/photosController.js
index ddb2758f..a8a7a508 100644
--- a/js/photosController.js
+++ b/js/photosController.js
@@ -60,6 +60,12 @@ PhotosController.prototype = {
             that.enterMovePhotoMode();
             that.map.closePopup();
         });
+        $('body').on('click', '.resetphoto', function(e) {
+            var ul = $(this).parent().parent();
+            var filePath = ul.attr('filepath');
+            that.resetPhotoCoords([filePath]);
+            that.map.closePopup();
+        });
     },
 
     updateMyFirstLastDates: function() {
@@ -423,5 +429,43 @@ PhotosController.prototype = {
         });
     },
 
+    resetPhotoCoords: function(paths) {
+        var that = this;
+        $('#navigation-photos').addClass('icon-loading-small');
+        $('.leaflet-container').css('cursor', 'wait');
+        var req = {
+            paths: paths
+        };
+        var url = OC.generateUrl('/apps/maps/photos');
+        $.ajax({
+            type: 'DELETE',
+            url: url,
+            data: req,
+            async: true
+        }).done(function (response) {
+            OC.Notification.showTemporary(t('maps', '{nb} photos reset', {nb: response}));
+            if (response > 0) {
+                that.photosDataLoaded = false;
+                for (var i=0; i < that.photoMarkers.length; i++) {
+                    that.photoLayer.removeLayer(that.photoMarkers[i]);
+                }
+                that.photoMarkers = [];
+                that.photoMarkersOldest = null;
+                that.photoMarkersNewest = null;
+                that.photoMarkersFirstVisible = 0;
+                that.photoMarkersLastVisible = -1;
+                that.timeFilterBegin = 0;
+                that.timeFilterEnd = Date.now();
+
+                that.showLayer();
+            }
+        }).always(function (response) {
+            $('#navigation-photos').removeClass('icon-loading-small');
+            $('.leaflet-container').css('cursor', 'grab');
+        }).fail(function(response) {
+            OC.Notification.showTemporary(t('maps', 'Failed to reset photos coordinates') + ': ' + response.responseText);
+        });
+    },
+
 };
 
diff --git a/lib/Controller/PhotosController.php b/lib/Controller/PhotosController.php
index 5e72faea..bb009df8 100644
--- a/lib/Controller/PhotosController.php
+++ b/lib/Controller/PhotosController.php
@@ -62,4 +62,12 @@ class PhotosController extends Controller {
         return new DataResponse($result);
     }
 
+    /**
+     * @NoAdminRequired
+     */
+    public function resetPhotosCoords($paths) {
+        $result = $this->photofilesService->resetPhotosFilesCoords($this->userId, $paths);
+        return new DataResponse($result);
+    }
+
 }
diff --git a/lib/Service/PhotofilesService.php b/lib/Service/PhotofilesService.php
index c7c2f2c7..ff55ae9e 100644
--- a/lib/Service/PhotofilesService.php
+++ b/lib/Service/PhotofilesService.php
@@ -236,6 +236,24 @@ class PhotofilesService {
         return $nbDone;
     }
 
+    public function resetPhotosFilesCoords($userId, $paths) {
+        $userFolder = $this->root->getUserFolder($userId);
+        $nbDone = 0;
+
+        foreach ($paths as $i => $path) {
+            $cleanpath = str_replace(array('../', '..\\'), '',  $path);
+            if ($userFolder->nodeExists($cleanpath)) {
+                $file = $userFolder->get($cleanpath);
+                if ($this->isPhoto($file) and $file->isUpdateable()) {
+                    $this->resetExifCoords($file);
+                    $this->photoMapper->updateByFileId($file->getId(), null, null);
+                    $nbDone++;
+                }
+            }
+        }
+        return $nbDone;
+    }
+
     private function addPhoto($photo, $userId) {
         $exif = $this->getExif($photo);
         if (!is_null($exif)) {
@@ -387,9 +405,38 @@ class PhotofilesService {
         }
     }
 
-    private function setExifCoords($file, $lat, $lng) {
+    private function resetExifCoords($file) {
         $path = $file->getStorage()->getLocalFile($file->getInternalPath());
 
+        $data = new PelDataWindow($file->getContent());
+        $pelJpeg = new PelJpeg($data);
+
+        $pelExif = $pelJpeg->getExif();
+        if ($pelExif == null) {
+            $pelExif = new PelExif();
+            $pelJpeg->setExif($pelExif);
+        }
+
+        $pelTiff = $pelExif->getTiff();
+        if ($pelTiff == null) {
+            $pelTiff = new PelTiff();
+            $pelExif->setTiff($pelTiff);
+        }
+
+        $pelIfd0 = $pelTiff->getIfd();
+        if ($pelIfd0 == null) {
+            $pelIfd0 = new PelIfd(PelIfd::IFD0);
+            $pelTiff->setIfd($pelIfd0);
+        }
+
+        $pelSubIfdGps = new PelIfd(PelIfd::GPS);
+        $pelIfd0->addSubIfd($pelSubIfdGps);
+
+        $file->putContent($pelJpeg->getBytes());
+    }
+
+    private function setExifCoords($file, $lat, $lng) {
+        $path = $file->getStorage()->getLocalFile($file->getInternalPath());
 
         $data = new PelDataWindow($file->getContent());
         $pelJpeg = new PelJpeg($data);