From f5d026767cba3f646cd1cbeef4dcc9dde04fc2bd Mon Sep 17 00:00:00 2001
From: mandlm <mandlm@molez.net>
Date: Thu, 7 Jan 2016 16:10:42 +0100
Subject: [PATCH] Added a script to switch mopidy config file

---
 Moped/SwitchMopidy.py | 67 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100755 Moped/SwitchMopidy.py

diff --git a/Moped/SwitchMopidy.py b/Moped/SwitchMopidy.py
new file mode 100755
index 0000000..f94a5be
--- /dev/null
+++ b/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()