add browser based file manager

snap/snapcraft.yaml

@@ -4,20 +4,22 @@ summary: A kiosk image viewer intended for use with mir-kiosk
 description: |
   Image viewer for mir-kiosk based on imv
 
-  Put Pictures into /var/snap/picviewer-kiosk/common/,
-  restart the snap with "snap restart picviewer-kiosk" and the
-  Pictures will run as a slideshow at a 10 second rotation 
-  frequency.
+  To manage pictures shown by the Image Viewer, open
+  http://<IP of your kiosk device>:8080/ and upload some
+  picture files to the directory, a slideshow will automatically
+  start on the Image Viewer screen.
 
-  Support for over 30 different image file formats including
+  Imv has support for over 30 different image file formats including
     - Photoshop PSD files
     - Animated GIFS
     - Various RAW formats
-  Configurable key bindings and behaviour
 
   To find out more about imv go to
   https://github.com/eXeC64/imv
 
+  To find out more about the FileManager tool used, go to
+  https://github.com/serverwentdown/file-manager
+
   To find out more about the snap package of imv go to
   https://github.com/ogra1/picviewer-kiosk
 
@@ -26,8 +28,8 @@ grade: stable
 confinement: strict
 
 apps:
-  picviewer-kiosk:
-    command: snap/command-chain/desktop-launch $SNAP/usr/bin/imv -b checks -f -t 10 $SNAP_COMMON/
+  imv:
+    command: snap/command-chain/desktop-launch $SNAP/usr/bin/imv -f -t 10 -r $SNAP_DATA/
     daemon: simple
     restart-condition: always
     extensions: [ gnome-3-28 ]
@@ -36,6 +38,15 @@ apps:
       - network-bind
       - opengl
       - wayland
+  file-browser:
+    command: bin/node $SNAP/index.js
+    daemon: simple
+    plugs:
+      - network
+      - network-bind
+  watcher:
+    command: watcher.sh
+    daemon: simple
 
 parts:
   imv:
@@ -71,3 +82,34 @@ parts:
       - libopenjp2-7
       - libraw16
       - libwebpmux3
+  filebrowser:
+    source: https://github.com/serverwentdown/file-manager.git
+    source-depth: 1
+    plugin: nodejs
+    nodejs-version: 10.21.0
+    nodejs-package-manager: npm
+    build-environment:
+      - PATH: "$PATH:$SNAPCRAFT_PART_SRC/../npm/bin"
+      - PATH: "$PATH:$SNAPCRAFT_PART_BUILD/node_modules/.bin"
+      - NPM_CONFIG_UNSAFE_PERM: "true"
+    override-build: |
+      # workaround for build.snapcraft.io builds
+      # https://bugs.launchpad.net/bugs/1886861
+      if [ -n "$http_proxy" ]; then
+        export ELECTRON_GET_USE_PROXY=1
+        export GLOBAL_AGENT_HTTP_PROXY="${http_proxy}"
+        export GLOBAL_AGENT_HTTPS_PROXY="${http_proxy}"
+      fi
+
+      npm install
+      cp -av index.js $SNAPCRAFT_PART_INSTALL/
+      cp -av node_modules $SNAPCRAFT_PART_INSTALL/
+      cp -av views $SNAPCRAFT_PART_INSTALL/
+      cp -av assets $SNAPCRAFT_PART_INSTALL/
+      cp -av $SNAPCRAFT_PART_SRC/../npm/bin $SNAPCRAFT_PART_INSTALL/
+      cp -av $SNAPCRAFT_PART_SRC/../npm/lib/node_modules/* $SNAPCRAFT_PART_INSTALL/node_modules/
+  watcher:
+    plugin: dump
+    source: watcher
+    stage-packages:
+      - inotify-tools

watcher/watcher.sh

@@ -0,0 +1,7 @@
+#! /bin/sh
+
+inotifywait -m $SNAP_DATA -e create -e moved_to |
+    while read dir action file; do
+        echo "The file '$file' appeared in directory '$dir' via '$action'"
+        snapctl restart "$SNAP_NAME".imv
+done