Added a script to switch mopidy config file

Moped/SwitchMopidy.py

@@ -0,0 +1,67 @@
+#!/usr/bin/python
+
+import glob
+import os
+import subprocess
+
+import RPi.GPIO as GPIO
+
+mopidyConf = '/etc/mopidy/mopidy.conf'
+userDir = '/etc/mopidy/conf.user/'
+
+def stopMopidy():
+    command = ['service', 'mopidy', 'stop']
+    subprocess.call(command, shell=False)
+
+def startMopidy():
+    command = ['service', 'mopidy', 'start']
+    subprocess.call(command, shell=False)
+
+def getConfigs():
+    return sorted(glob.glob(os.path.join(userDir, '*.conf')))
+
+def getCurrentConfig():
+    if os.path.islink(mopidyConf):
+        return os.path.realpath(mopidyConf)
+    else:
+        return None
+
+def getNextConfig():
+    currentConfig = getCurrentConfig()
+    availableConfigs = getConfigs()    
+    currentIndex = availableConfigs.index(currentConfig)
+    nextIndex = (currentIndex + 1) % len(availableConfigs)
+    return availableConfigs[nextIndex]
+
+def setConfig(newConfig):
+    if os.path.islink(mopidyConf) and os.path.isfile(newConfig):
+        os.unlink(mopidyConf)
+        os.symlink(newConfig, mopidyConf)
+
+def switchConfig():
+    setConfig(getNextConfig())
+    
+def buttonHandler(channel):
+    print 'Switching to ' + getNextConfig()
+    try:
+        stopMopidy()
+        switchConfig()
+        startMopidy()
+    except OSError as e:
+        print 'Error: ' + e.strerror
+    
+if __name__ == '__main__':
+    buttonPin = 4
+    dummyPin = 15
+    
+    GPIO.setmode(GPIO.BCM)
+    GPIO.setup(buttonPin, GPIO.IN, pull_up_down=GPIO.PUD_UP)
+    GPIO.setup(dummyPin, GPIO.IN, pull_up_down=GPIO.PUD_UP)
+
+    GPIO.add_event_detect(buttonPin, GPIO.FALLING, callback=buttonHandler, bouncetime=1000)
+
+    try:
+        while True:
+            GPIO.wait_for_edge(dummyPin, GPIO.RISING)
+    finally:
+        GPIO.cleanup()