Add a flatpak wrapper to start Tuhi on demand

No-one but Arch packages Tuhi at the moment, so let's assume it's not
running/installed, install it and start it up together with TuhiGui and voila,
everything just works as it should be.

README.md

@@ -34,6 +34,16 @@ Install TuhiGUI
 
 TuhiGui requires Python v3.6 or above.
 
+Flatpak
+-------
+
+```
+ $> git clone http://github.com/tuhiproject/tuhigui
+ $> cd tuhigui
+ $> flatpak-builder flatpak_builddir org.freedesktop.TuhiGui.json --install --user --force-clean
+ $> flatpak run org.freedesktop.TuhiGui
+```
+
 License
 -------
 

meson.build

@@ -104,3 +104,8 @@ if appstream_util.found()
     test('appstream-util validate-relax', appstream_util,
          args: ['validate-relax', appdata])
 endif
+
+# A wrapper to start tuhi at the same time as tuhigui, used by the flatpak
+configure_file(input: 'tools/tuhi-gui-flatpak.py',
+               output: 'tuhi-gui-flatpak.py',
+               copy: true)

org.freedesktop.TuhiGui.json

@@ -3,11 +3,12 @@
     "runtime": "org.gnome.Platform",
     "runtime-version": "3.30",
     "sdk": "org.gnome.Sdk",
-    "command": "tuhigui",
+    "command": "tuhi-gui",
       "finish-args": [
         "--share=ipc",
         "--socket=x11",
         "--talk-name=org.freedesktop.tuhi1",
+        "--own-name=org.freedesktop.tuhi1",
         "--system-talk-name=org.bluez"
       ],
     "modules": [
@@ -51,6 +52,19 @@
                 "pip3 install --no-index --find-links=\"file://${PWD}\" --prefix=${FLATPAK_DEST} ."
             ]
         },
+        {
+            "name": "tuhi",
+            "buildsystem": "simple",
+            "sources": [
+                {
+                    "type": "git",
+                    "url": "https://github.com/tuhiproject/tuhi"
+                }
+            ],
+            "build-commands": [
+                "pip3 install --no-index --find-links=\"file://${PWD}\" --prefix=${FLATPAK_DEST} ."
+            ]
+        },
         {
             "name": "tuhigui",
             "buildsystem": "meson",
@@ -59,6 +73,10 @@
                     "type": "git",
                     "url": "."
                 }
+            ],
+            "post-install": [
+                "cp tuhi-gui-flatpak.py /app/bin/tuhi-gui",
+                "chmod +x /app/bin/tuhi-gui"
             ]
         }
     ]

tools/tuhi-gui-flatpak.py

@@ -0,0 +1,29 @@
+#!/usr/bin/env python3
+#
+#  This program is free software; you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation; either version 2 of the License, or
+#  (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+
+import subprocess
+from multiprocessing import Process
+
+def start_tuhi():
+    subprocess.run('tuhi')
+
+def start_tuhigui():
+    subprocess.run('tuhigui')
+
+if __name__ == '__main__':
+    tuhi = Process(target=start_tuhi)
+    tuhi.daemon = True
+    tuhi.start()
+    tuhigui = Process(target=start_tuhigui)
+    tuhigui.start()
+    tuhigui.join()