from midi_wrapper_mido import MidiWrapper

class MidiController:
    DEVICE_NAME = "Launchpad Mini MIDI 1"

    def __init__(self, soloTool, midiWrapperOverride=None):
        self._soloTool = soloTool
        if midiWrapperOverride is not None:
            self._midiWrapper = midiWrapperOverride
        else:
            self._midiWrapper = MidiWrapper()

        self._handlers = {
            112 : self._playPause,
            96 : self._soloTool.stop,
            101 : self._soloTool.jumpToA,
            118 : self._soloTool.previousSong,
            119 : self._soloTool.nextSong
        }

    def connect(self):
        self._midiWrapper.connect(MidiController.DEVICE_NAME)
        self._midiWrapper.setCallback(self._callback)

    def _callback(self, msg):
        if msg.velocity < 127:
            return

        if msg.note in self._handlers:
            handler = self._handlers[msg.note]()

    def _playPause(self):
        if self._soloTool.isPlaying():
            self._soloTool.pause()
        else:
            self._soloTool.play()