export interface Event<T extends string> {
  deltaTime: number
  type: T
}

export interface MetaEvent<T extends string> extends Event<"meta"> {
  subtype: T
}

/* Meta */

export interface SequenceNumberEvent extends MetaEvent<"sequenceNumber"> {
  number: number
}

export interface TextEvent extends MetaEvent<"text"> {
  text: string
}

export interface CopyrightNoticeEvent extends MetaEvent<"copyrightNotice"> {
  text: string
}

export interface TrackNameEvent extends MetaEvent<"trackName"> {
  text: string
}

export interface InstrumentNameEvent extends MetaEvent<"instrumentName"> {
  text: string
}

export interface LyricsEvent extends MetaEvent<"lyrics"> {
  text: string
}

export interface MarkerEvent extends MetaEvent<"marker"> {
  text: string
}

export interface CuePointEvent extends MetaEvent<"cuePoint"> {
  text: string
}

export interface ChannelPrefixEvent extends MetaEvent<"midiChannelPrefix"> {
  value: number
}

export interface PortPrefixEvent extends MetaEvent<"portPrefix"> {
  port: number
}

export interface EndOfTrackEvent extends MetaEvent<"endOfTrack"> {}

export interface SetTempoEvent extends MetaEvent<"setTempo"> {
  microsecondsPerBeat: number
}

export interface SmpteOffsetEvent extends MetaEvent<"smpteOffset"> {
  frameRate: number
  hour: number
  min: number
  sec: number
  frame: number
  subframe: number
}

export interface TimeSignatureEvent extends MetaEvent<"timeSignature"> {
  numerator: number
  denominator: number
  metronome: number
  thirtyseconds: number
}

export interface KeySignatureEvent extends MetaEvent<"keySignature"> {
  key: number
  scale: number
}

export interface SequencerSpecificEvent extends MetaEvent<"sequencerSpecific"> {
  data: number[]
}

export interface UnknownMetaEvent extends MetaEvent<"unknown"> {
  data: number[]
}

/* Channel */

export interface ChannelEvent<T extends string> extends Event<"channel"> {
  channel: number
  subtype: T
}

export interface NoteOffEvent extends ChannelEvent<"noteOff"> {
  noteNumber: number
  velocity: number
}

export interface NoteOnEvent extends ChannelEvent<"noteOn"> {
  noteNumber: number
  velocity: number
}

export interface NoteAftertouchEvent extends ChannelEvent<"noteAftertouch"> {
  noteNumber: number
  amount: number
}

export interface ProgramChangeEvent extends ChannelEvent<"programChange"> {
  value: number
}

export interface ChannelAftertouchEvent
  extends ChannelEvent<"channelAftertouch"> {
  amount: number
}

export interface PitchBendEvent extends ChannelEvent<"pitchBend"> {
  value: number
}

export interface UnknownChannelEvent extends ChannelEvent<"unknown"> {
  data: number
}

/* Controller */

export interface ControllerEvent extends ChannelEvent<"controller"> {
  controllerType: number
  value: number
}

/* Other */

export interface SysExEvent extends Event<"sysEx"> {
  data: number[]
}

export interface DividedSysExEvent extends Event<"dividedSysEx"> {
  data: number[]
}

/* System Common Events */

export interface SystemEvent<T extends string> extends Event<"system"> {
  subtype: T
}

export interface TimeCodeQuarterFrameEvent
  extends SystemEvent<"timeCodeQuarterFrame"> {
  data: number
}

export interface SongPositionPointerEvent
  extends SystemEvent<"songPositionPointer"> {
  value: number // 14-bit value
}

export interface SongPositionPointerEvent
  extends SystemEvent<"songPositionPointer"> {
  value: number // 14-bit value
}

export interface SongSelectEvent extends SystemEvent<"songSelect"> {
  songNumber: number
}

export interface TuneRequestEvent extends SystemEvent<"tuneRequest"> {
  data: number[]
}

/* Real-Time Events */

export interface TimingClockEvent extends SystemEvent<"timingClock"> {}

export interface StartEvent extends SystemEvent<"start"> {}

export interface ContinueEvent extends SystemEvent<"continue"> {}

export interface StopEvent extends SystemEvent<"stop"> {}

export interface ActiveSensingEvent extends SystemEvent<"activeSensing"> {}

export type AnyMetaEvent =
  | SequenceNumberEvent
  | TextEvent
  | CopyrightNoticeEvent
  | TrackNameEvent
  | InstrumentNameEvent
  | LyricsEvent
  | MarkerEvent
  | CuePointEvent
  | ChannelPrefixEvent
  | PortPrefixEvent
  | EndOfTrackEvent
  | SetTempoEvent
  | SmpteOffsetEvent
  | TimeSignatureEvent
  | KeySignatureEvent
  | SequencerSpecificEvent
  | UnknownMetaEvent

export type AnyChannelEvent =
  | NoteOffEvent
  | NoteOnEvent
  | NoteAftertouchEvent
  | ProgramChangeEvent
  | ChannelAftertouchEvent
  | PitchBendEvent
  | UnknownChannelEvent
  | ControllerEvent

export type AnySysExEvent =
  | SysExEvent
  | DividedSysExEvent
  | TimeCodeQuarterFrameEvent
  | SongPositionPointerEvent
  | SongSelectEvent
  | TuneRequestEvent
  | TimingClockEvent
  | StartEvent
  | ContinueEvent
  | StopEvent
  | ActiveSensingEvent

export type AnyEvent = AnyMetaEvent | AnySysExEvent | AnyChannelEvent