#pragma once

friend class AxeEffect;

const static byte SYSEX_END													= 0xF7;
const static byte MAX_SYSEX 												= 128;
const static unsigned MIDI_BAUD											= 31250;

const static byte BANK_CHANGE_CC 										= 0x00;
const static byte SYSEX_TUNER_ON 										= 0x01;
const static byte SYSEX_TUNER_OFF 									= 0x00;
const static byte SYSEX_EFFECT_BYPASS 							= 0x01;
const static byte SYSEX_EFFECT_ENABLE 							= 0x00;

const static byte SYSEX_MANUFACTURER_BYTE1 					= 0x00;
const static byte SYSEX_MANUFACTURER_BYTE2 					= 0x01;
const static byte SYSEX_MANUFACTURER_BYTE3 					= 0x74;
const static byte SYSEX_AXE_VERSION 								= 0x10;
const static byte SYSEX_QUERY_BYTE 									= 0x7F;
const static byte SYSEX_CHECKSUM_PLACEHOLDER 				= 0x00;

const static byte SYSEX_REQUEST_FIRMWARE 						= 0x08;
const static byte SYSEX_REQUEST_EFFECT_BYPASS 			= 0x0A;
const static byte SYSEX_REQUEST_EFFECT_CHANNEL 			= 0x0B;
const static byte SYSEX_REQUEST_SCENE_NUMBER 				= 0x0C;
const static byte SYSEX_REQUEST_PRESET_INFO 				= 0x0D;
const static byte SYSEX_REQUEST_SCENE_INFO 					= 0x0E;
const static byte SYSEX_REQUEST_LOOPER_STATUS 			= 0x0F;
const static byte SYSEX_TAP_TEMPO_PULSE 						= 0x10;
const static byte SYSEX_TUNER 											= 0x11;
const static byte SYSEX_EFFECT_DUMP 								= 0x13;
const static byte SYSEX_REQUEST_TEMPO 							= 0x14;

enum MidiType {
  ControlChange = 0xB0,
  ProgramChange = 0xC0,
  SystemExclusive = 0xF0
};

void readMidi();
void checkFirmware();
void checkTimers();
void checkIncomingPreset();
void sendSysEx(const byte length, byte *sysex);
void setSystemConnected(const bool connected);
bool isAxeSysEx(const byte *sysex, const byte length);
bool isRequestedPreset(const PresetNumber);
void parseName(const byte *sysex, const byte length, const byte offset, char *buffer, const byte size);
void processEffectDump(const byte *sysex, const byte length);
void onSystemExclusive(const byte *sysex, const byte length);
void onPresetChange(const PresetNumber number, bool receivedFromAxe = true);

AxeEffect* findEffect(const EffectId);

void callConnectionStatusCallback(const bool connected);	
void callTapTempoCallback();
void callPresetChangingCallback(const PresetNumber);
void callPresetNameCallback(const PresetNumber, const char*, const byte);
void callSceneNameCallback(const SceneNumber, const char*, const byte);
void callEffectsReceivedCallback(AxePreset*);
void callPresetChangeCallback(AxePreset*);
void callSystemChangeCallback();
void callTunerDataCallback(const char *note, const byte string, const byte fineTune);
void callTunerStatusCallback(bool enabled);
void callLooperStatusCallback(AxeLooper*);
bool callSysexPluginCallback(const byte*, const byte); 
bool callEffectFilterCallback(const PresetNumber, AxeEffect); 

bool isValidPresetNumber(const PresetNumber preset);
bool isValidSceneNumber(const SceneNumber scene); 
void intToMidiBytes(const int, byte*, byte*);
int midiBytesToInt(const byte, const byte);
bool filterMidiChannel(byte message);
byte applyMidiChannel(byte midiByte, byte channel);

#ifdef AXE_DEBUG_SYSEX
void debugSysex(const byte *sysex, const byte length, const char *message);
#endif

UpdateMode _updateMode = UpdateMode::AUTO;
AxePreset _preset, _incomingPreset;
AxeLooper _looper;
Version _firmwareVersion;
Version _usbVersion;
HardwareSerial *_serial = nullptr;
byte _tempo;
byte _bank;
byte _midiChannel; 
bool _firmwareRequested = false;
bool _tunerEngaged = false;
bool _systemConnected = false;
bool _midiReady = false;
bool _readingSysex = false;
bool _fetchEffects = false;
byte _sysexBuffer[MAX_SYSEX];
byte _sysexCount;
byte _tunerIncomingCount = 0, _tunerTriggerThreshold = 15;
millis_t _startupDelay = 1000;
millis_t _refreshRate = 0, _refreshThrottle = 500;
millis_t _sysexTimout = 2000, _tunerTimout = 800;
millis_t _lastSysexResponse = 0, _lastTunerResponse = 0, _lastRefresh = 0;

ConnectionStatusCallback 	_connectionStatusCallback;
TapTempoCallback 					_tapTempoCallback;
PresetChangingCallback 		_presetChangingCallback;
PresetNameCallback				_presetNameCallback;
SceneNameCallback					_sceneNameCallback;
EffectsReceivedCallback		_effectsReceivedCallback;
PresetChangeCallback 			_presetChangeCallback;
SystemChangeCallback 			_systemChangeCallback;
TunerStatusCallback 			_tunerStatusCallback;
TunerDataCallback 				_tunerDataCallback;
LooperStatusCallback 			_looperStatusCallback;
SysexPluginCallback 			_sysexPluginCallback;
EffectFilterCallback			_effectFilterCallback;

const char *_notes[12] = {"A ", "Bb", "B ", "C ", "C#", "D ", "Eb", "E ", "F ", "F#", "G ", "Ab"};