Add web mixer with native input volume and output selection

scripts/backup.py

@@ -8,10 +8,18 @@ import subprocess
 import sys
 
 UNITS = ['shairport-sync', 'nqptp', 'bluealsa', 'bluealsa-aplay',
-         'radxa-bt-output', 'radxa-bose-output', 'avahi-daemon', 'bluetooth']
+         'radxa-bt-output', 'radxa-bose-output', 'radxa-mixer-web', 'avahi-daemon', 'bluetooth']
 PATHS = [
+    '/etc/systemd/system/radxa-mixer-web.service',
+    '/etc/dbus-1/system.d/shairport-sync-dbus.conf',
+    '/usr/local/lib/radxa-mixer/input_controls.py',
+    '/usr/local/lib/radxa-mixer/web_server.py',
+    '/usr/local/lib/radxa-mixer/web/index.html',
+    '/usr/local/lib/radxa-mixer/web/app.js',
+    '/usr/local/lib/radxa-mixer/web/style.css',
     '/etc/asound.conf', '/etc/shairport-sync.conf',
     '/etc/radxa-audio/mixer.json', '/etc/radxa-audio/asound-dac.conf',
+    '/etc/radxa-audio/input-memory.json',
     '/etc/radxa-audio/asound-bluetooth.conf',
     '/etc/systemd/system/shairport-sync.service', '/etc/systemd/system/nqptp.service',
     '/etc/systemd/system/bluealsa.service.d/10-radxa-sink.conf',
@@ -48,9 +56,9 @@ def snapshot(directory):
 def restore(directory):
     manifest = json.loads((directory / 'manifest.json').read_text())
     # Only restore allowlisted paths from our own snapshot.
-    if set(manifest['files']) != set(PATHS) or set(manifest['units']) != set(UNITS):
+    if not set(manifest['files']).issubset(PATHS) or not set(manifest['units']).issubset(UNITS):
         raise ValueError('알 수 없는 백업 형식입니다.')
-    for unit in UNITS[:6]: ctl('stop', unit)
+    for unit in UNITS[:7]: ctl('stop', unit)
     for name, existed in manifest['files'].items():
         target = Path(name)
         if existed:
@@ -60,11 +68,12 @@ def restore(directory):
         else:
             target.unlink(missing_ok=True)
     ctl('daemon-reload')
-    for unit, state in manifest['units'].items():
+    for unit in UNITS:
+        state = manifest['units'].get(unit, {'active': False, 'enabled': False})
         ctl('enable' if state['enabled'] else 'disable', unit)
     # Bluetooth and Avahi may have been started by apt during installation.
     for unit in reversed(UNITS):
-        state = manifest['units'][unit]
+        state = manifest['units'].get(unit, {'active': False, 'enabled': False})
         result = ctl('restart' if state['active'] else 'stop', unit)
         if state['active'] and result.returncode:
             print(result.stdout, file=sys.stderr)