Bowelyzer{

  var <gui, <server, <analyzer, <config, <hubAddr, <forwardAddr, <localAddr, <synthServerAddr;

  *new{
    arg configFile;
    ^super.new.init(configFile);
  }

  init{
    //initialize with configuration, if available (else use default)
    arg configFile;
    config = BowelyzerConfig.new(configFile);
    server = Server.new(
      \bowelyzer,
      NetAddr.new(config.config.at(\synthServerAddress), config.config.at(\synthServerPort))
    );
    Server.default = server;
    server.waitForBoot({
      this.setupNetAddressesFromConfig(config.config);
      this.setupSynthListenersFromConfig(config.config);
      analyzer = BowelyzerAnalyzer.new(config.config);
      gui = BowelyzerGUI.new(config);
      this.addGUIListeners;
      this.addServerListeners;
   },
   5,
   {"scsynth failed to start!".postln});
  }

  // add OSCdefs listening for GUI events
  addGUIListeners{
    // listen for control changes
    OSCdef.newMatching(
      key: \controls,
      func: {|msg, time, addr, recvPort|
        var type = msg[0],
        name = msg[1],
        control = msg[2],
        value = msg[3],
        value2;
        postln("Received: "++msg);
        // if the control exists, change it
        if(name.notNil && control.notNil && value.notNil,{
          if(config.config.at(\controls).includesKey(name),{
            if(config.config.at(\controls).at(name).includesKey(control),{
              if(BowelyzerConfig.hasToBeArray.includes(control), {
                if(msg[4].notNil, {
                  value2 = msg[4];
                  config.config.at(\controls).at(name).put(control, config.getControlValue(control, [value, value2]));
                });
              },{
                config.config.at(\controls).at(name).put(control, config.getControlValue(control, value));
              });
            });
          });
        });
      },
      path: "/controls",
      srcID: NetAddr.new("127.0.0.1", NetAddr.langPort)
    );

    // listen for input changes (rename and input channel)
    OSCdef.newMatching(
      key: \inputs,
      func: {|msg, time, addr, recvPort|
        var name = msg[1],
        type = msg[2],
        update = msg[3];
        postln("Received: "++msg);
        if(name.notNil && type.notNil && update.notNil,{
          if(config.config.at(\inputs).includesKey(name) && config.config.at(\controls).includesKey(name),{
            switch(type,
              \name,{
                // if the name is not empty and not used, change to it
                if((update.asString != "") && config.config.at(\inputs).includesKey(update).not, {
                  //move the controls
                  config.config.at(\controls).put(update.asSymbol, config.config.at(\controls).at(name));
                  config.config.at(\controls).removeAt(name.asSymbol);
                  // rename the input
                  config.config.at(\inputs).put(update.asSymbol, config.config.at(\inputs).at(name));
                  config.config.at(\inputs).removeAt(name);
                  // rename the channelView
                  gui.setChannelName(name, update);
                  // free the old OSC indicator fadeout Task
                  gui.freeOSCIndicatorFadeOutTask(name);
                  // add a new OSC indicator fadeout Task using the new name
                  gui.addOSCIndicatorFadeOutTask(update);
                  // stop the listener for LevelIndicator by name and start a new one based upon the updated name
                  OSCdef(("levels_"++name).asSymbol).free;
                  this.setupLevelListener(update, synthServerAddr);
                  //TODO: refactor into function
                  // free the synth on the server and start a new one according to the config
                  analyzer.freeAnalysisSynth(name.asSymbol);
                  analyzer.synths.removeAt(name);
                  //TODO: refactor into function
                  analyzer.addSynthWithName(update);
                  // start the Synth (possibly paused)
                  Routine{
                    1.wait;
                    analyzer.startSynthWithNameAndControls(update.asSymbol, config.config.at(\controls).at(update), config.config.at(\inputs).at(update));
                  }.play;
                  //TODO: refactor into function
                  // rename the hub listener for the Synth
                  this.freeSynthListener(name);
                  this.addSynthListener(update);
                  this.startSynthListener(update);
                },{
                  ("New name not valid: "++update).error;
                  gui.setChannelText(name, name);
                });
              },
              \input,{
                // change the input in configuration
                config.config.at(\inputs).put(name, update.asInteger);
                // change the input in the Synth
                analyzer.setSynthControl(name.asSymbol, \inputChannel, update.asInteger);
              }
            );
          });
        });
      },
      path: "/inputs",
      srcID: NetAddr.new("127.0.0.1", NetAddr.langPort)
    );

    // listen for toggling messages to "mute" channel
    OSCdef.newMatching(
      key: \toggle,
      func: {|msg, time, addr, recvPort|
        var name = msg[1],
        toggle = msg[2];
        postln("Received: "++msg);
        if(name.notNil && toggle.notNil && toggle.isInteger,{
          if(config.config.at(\inputs).includesKey(name),{
            switch(toggle,
              0,{
                config.config.at(\controls).at(name).put(\active, true);
                analyzer.startAnalysisSynth(name);
              },
              1,{
                config.config.at(\controls).at(name).put(\active, false);
                analyzer.stopAnalysisSynth(name);
              }
            );
          });
        });
      },
      path: "/toggle",
      srcID: NetAddr.new("127.0.0.1", NetAddr.langPort)
    );

    // listen for messages to toggle all channels on/off simultaneously
    OSCdef.newMatching(
      key: \toggle_all,
      func: {|msg, time, addr, recvPort|
        var type = msg[0],
        toggle = msg[1];
        postln("Received: "++msg);
        switch(toggle,
          0,{
            config.config.at(\controls).pairsDo({|name, controls|
              controls.put(\active, true);
              analyzer.startAnalysisSynth(name);
              gui.setCurrentToggleState(name, true);
            });
          },
          1,{
            config.config.at(\controls).pairsDo({|name, controls|
              controls.put(\active, false);
              analyzer.stopAnalysisSynth(name);
              gui.setCurrentToggleState(name, false);
            });
          }
        );
      },
      path: "/toggle_all",
      srcID: NetAddr.new("127.0.0.1", NetAddr.langPort)
    );

    // listen for address messages to change OSC addresses
    OSCdef.newMatching(
      key: \address,
      func: {|msg, time, addr, recvPort|
        var type = msg[1],
        address = msg[2];
        postln("Received: "++msg);
        if(type.notNil && config.config.includesKey(type),{
          config.config.put(type.asSymbol, address.asString);
          this.setupNetAddressesFromConfig(config.config);
        });
      },
      path: "/address",
      srcID: localAddr
    );

    // listen for port messages to change OSC ports
    OSCdef.newMatching(
      key: \port,
      func: {|msg, time, addr, recvPort|
        var type = msg[1],
        port = msg[2];
        postln("Received: "++msg);
        if(type.notNil && config.config.includesKey(type),{
          config.config.put(type.asSymbol, port.asInteger);
          this.setupNetAddressesFromConfig(config.config);
        });
      },
      path: "/port",
      srcID: localAddr
    );

    // listen for message to save configuration to current file
    OSCdef.newMatching(
      key: \save,
      func: {|msg, time, addr, recvPort|
        var path = msg[1];
        postln("Received: "++msg);
        if(config.configFilePath.isNil || config.configFilePath == "",{
          gui.saveAsAction(nil);
        },{
          config.writeConfigurationFile;
        });
      },
      path: "/save",
      srcID: localAddr
    );

    // listen for message to save configuration to current file
    OSCdef.newMatching(
      key: \saveas,
      func: {|msg, time, addr, recvPort|
        var name = msg[0],
        fileName = msg[1],
        dict;
        postln("Received: "++msg);
        if(config.writeConfigurationFile(fileName), {
          if((gui.configFilePathView.items.size == 0), {
            gui.setCurrentConfigFilePath(fileName);
          },{
            dict = Dictionary.with(*gui.configFilePathView.items);
            if(dict.includesKey(fileName.asSymbol).not,{
              gui.setCurrentConfigFilePath(fileName);
            });
          });
        });
      },
      path: "/saveas",
      srcID: localAddr
    );

    // listen for messages to load configuration from file
    OSCdef.newMatching(
      key: \load,
      func: {|msg, time, addr, recvPort|
        var name = msg[0],
        fileName = msg[1];
        postln("Received: "++msg);
        // free all channels
        config.config.at(\inputs).order.do({ |name|
          this.freeChannel(name.asSymbol);
        });
        // read the configuration file
        if(config.readConfigurationFile(fileName),{
          this.setupNetAddressesFromConfig(config.config);
          this.setupSynthListenersFromConfig(config.config);
          analyzer.setupSynthsFromConfig(config.config);
          config.config.at(\inputs).keysDo({ |name|
            gui.setupChannelView(name, config.config);
            // setup a LevelListener for the new Synth
            this.setupLevelListener(name, synthServerAddr);
            // setup a OSC listener for the Synth by name
            this.addSynthListener(name);
          });
          // reload the addresses and ports Views
          gui.removeSettingsView("synthServer");
          gui.removeSettingsView("hub");
          gui.removeSettingsView("forward");
          gui.setupSynthServerView(config.config);
          gui.setupHubView(config.config);
          gui.setupForwardView(config.config);
          gui.setCurrentConfigFilePath(config.configFilePath);
          gui.setCurrentGlobalToggleState(true);
        },{
          ("Configuration could not be read: "++fileName).error;
        });
      },
      path: "/load",
      srcID: localAddr
    );

    // listen for messages to free (close) channels
    OSCdef.newMatching(
      key: \free,
      func: {|msg, time, addr, recvPort|
        var type = msg[0],
        name = msg[1];
        postln("Received: "++msg);
        this.freeChannel(name);
      },
      path: "/free",
      srcID: NetAddr.new("127.0.0.1", NetAddr.langPort)
    );

    // listen for messages to add channels
    OSCdef.newMatching(
      key: \add,
      func: {|msg, time, addr, recvPort|
        var type = msg[0],
        name;
        postln("Received: "++msg);
        this.addChannel;
      },
      path: "/add",
      srcID: NetAddr.new("127.0.0.1", NetAddr.langPort)
    );
  }

  // add OSCdefs listening for messages coming from scsynth, to update the GUI
  addServerListeners{
    this.setupIndicatorListener;
    // add and start a listener for each channel's LevelIndicator
    config.config.at(\inputs).pairsDo({|key,value|
      this.setupLevelListener(key, synthServerAddr);
    });
  }

  // setup a listener for a level indicator by name and source (of synth server)
  setupIndicatorListener{
    // listen for indicator messages
    OSCdef.newMatching(
      key: \indicate,
      func: {|msg, time, addr, recvPort|
        var name = msg[1];
        if(config.config.at(\inputs).includesKey(name),{
          gui.pingOSCIndicator(name);
        });
      },
      path: "/indicate",
      srcID: NetAddr.new("127.0.0.1", NetAddr.langPort)
    );
  }

  // setup a listener for a level indicator by name and source (of synth server)
  setupLevelListener{
    arg name, server;
    postln("Setting up LevelListener for: "++name);
    OSCdef.newMatching(
      key: ("levels_"++name).asSymbol,
      func: {|msg, time, addr, recvPort|
        var name = msg[0].asString.replace("/levels/", "").asSymbol,
        value = msg[3].ampdb.linlin(-40, 0, 0, 1),
        peak = msg[4].ampdb.linlin(-40, 0, 0, 1);
        gui.setLevel(name, value, peak);
      },
      path: "/levels/"++name,
      srcID: server
    );
  }

  // add a new channel by name
  addChannel{
    arg extName;
    // add a new input to the config
    var name;
    if(extName.isNil,{
      name = config.addInput;
    },{
      name = config.addInput(extName);
    });
    // initialize a new channelView with the name and controls
    gui.setupChannelView(name, config.config);
    // add and start a new Synth by the given name
    Routine{
      analyzer.addSynthWithName(name);
      1.wait;
      analyzer.startSynthWithNameAndControls(name, config.config.at(\controls).at(name), config.config.at(\inputs).at(name));
    }.play;
    // setup a LevelListener for the new Synth
    this.setupLevelListener(name, synthServerAddr);
    // setup a OSC listener for the Synth by name
    this.addSynthListener(name);
  }

  // free (remove) a channel
  freeChannel{
    arg name;
    ("Removing channel: "++name).postln;
    // free Synth
    analyzer.freeAnalysisSynth(name);
    // remove OSCdefs for the channel
    OSCdef.all.pairsDo({|key, value|
      if(key == name.asSymbol,{
        ("Freeing OSCdef: "++name).postln;
        value.free;
      });
      if(key == ("levels_"++name).asSymbol,{
        ("Freeing OSCdef: levels_"++name).postln;
        value.free;
      });
    });
    // remove configurations for the channel
    config.config.at(\inputs).removeAt(name);
    config.config.at(\controls).removeAt(name);
    // remove fadeout task for OSC indicator
    gui.freeOSCIndicatorFadeOutTask(name);
    // remove GUI elements
    gui.removeChannelView(name, config.config.at(\inputs).size);
  }

  // setup the NetAddresses from configuration
  setupNetAddressesFromConfig{
    arg config;
    forwardAddr = NetAddr.new(config.at(\forwardAddress), config.at(\forwardPort));
    hubAddr = NetAddr.new(config.at(\hubAddress), config.at(\hubPort));
    synthServerAddr = NetAddr.new(config.at(\synthServerAddress), config.at(\synthServerPort));
    localAddr = NetAddr.new("127.0.0.1", NetAddr.langPort);
  }

  // setup OSCdef for SynthServerAddress:SynthServerPort
  setupSynthListenersFromConfig{
    arg config;
    // listen for individual SendReply messages
    config.at(\inputs).keysValuesDo({|name, input|
      postln("Listening for messages called '/"++name++"' coming from scsynth at "++synthServerAddr.ip++":"++synthServerAddr.port++".");
      this.addSynthListener(name);
    });
  }

  // add a listener for a specific Synth (by name)
  addSynthListener{
    arg name;
    OSCdef.newMatching(
      key: name.asSymbol,
      func: {|msg, time, addr, recvPort|
        this.forwardToNetAddress(msg, time);
      },
      path: "/"++name.asString,
      srcID: synthServerAddr,
      recvPort: hubAddr.port
    );
  }

  startSynthListener{
    arg name;
    OSCdef(name).enable;
  }

  stopSynthListener{
    arg name;
    OSCdef(name.asSymbol).disable;
  }

  freeSynthListener{
    arg name;
    OSCdef(name.asSymbol).free;
  }

  //forward a received OSC message to the globally specified forward address
  forwardToNetAddress{
    arg msg, time;
    var name = msg[0],
    sanitizedName = name.asString.replace("/","").asSymbol,
    amplitude = msg[3],
    pitch = msg[4],
    hasPitch = msg[5],
    onsetDetect = msg[6],
    range = config.config.at(\controls).at(sanitizedName).at(\freqRange),
    onlyForwardOnNewPitch = config.config.at(\controls).at(sanitizedName).at(\onlyForwardOnNewPitch);
    // if there is something connected
    if(amplitude != 0,{
      // if the pitch is within freqRange
      if((pitch >= range[0]) && (pitch <= range[1]),{
        if(onlyForwardOnNewPitch, {
          if(hasPitch > 0, {
            localAddr.sendMsg("/indicate", sanitizedName);
            if(forwardAddr.isLocal && (forwardAddr.port == NetAddr.langPort), {
              postln(name++": amplitude: "++amplitude++"; pitch: "++pitch++"; hasPitch: "++hasPitch++"; onSet: "++onsetDetect);
            },{
              forwardAddr.sendMsg(name, amplitude, pitch, hasPitch, onsetDetect);
            });
          });
        },{
          localAddr.sendMsg("/indicate", sanitizedName);
          if(forwardAddr.isLocal && (forwardAddr.port == NetAddr.langPort), {
            postln(name++": amplitude: "++amplitude++"; pitch: "++pitch++"; hasPitch: "++hasPitch++"; onSet: "++onsetDetect);
          },{
            forwardAddr.sendMsg(name, amplitude, pitch, hasPitch, onsetDetect);
          });
        });
      });
    });
  }
}