/* play function for mass shooting data w/ custom timing */

// export const note_values = [
//   [8, '8 measures', 8 * 512],
//   [4, '4 measures', 4 * 512],
//   [2, '2 measures', 2 * 512],
//   [1, 'whole note', 512],
//   [1/2, 'half note', 256],
//   [1/3, 'third note', [170, 170, 171]],
//   [1/4, 'quarter note', 128],
//   [1/5, 'fifth note', [51,51,51,51,52]],
//   [1/6, 'sixth note', [85, 85, 86, 85, 85, 86]],
//   [1/8, 'eighth note', 64],
//   [1/10, 'tenth note', [25,26,26,25,26,25,26,26,25,26]],
//   [1/12, 'twelfth note', [21,21,22, 21,21,22, 21,21,22, 21,21,22]],
//   [1/16, 'sixteenth note', 32],
//   [1/32, 'thirtysecond note', 16],
// ]

function play_mass_shootings(i, bounds, diff, note_time, channel="all", exporting) {
  const { min, max } = bounds
  const total = dataset.dates.length
  let pedal_note
  let notes = [], midi_notes = []
  let cases = []
  let timings
  let week = Math.floor((i)/4) % 4
  let year = Math.floor((i - (4*4*3)) / 48) // + 2
  console.log(year)
  let yy = -year
  if (year > 0) year += 1
  let this_one = 0
  // console.log(i, mass_i, dataset.dates[mass_i], channel, exporting)
  while (i >= dataset.dates[mass_i] && mass_i < total) {
    // console.log(i, dataset.dates[mass_i])
    notes.push(dataset.lines[0][mass_i])
    if (dataset.isMass) {
      cases.push(dataset.data[mass_i][mass_fields.date] + ' ' + dataset.data[mass_i][mass_fields.case] +
        ", " + dataset.data[mass_i][mass_fields.fatalities] + ' dead, ' + dataset.data[mass_i][mass_fields.injured] + ' injured')
    } else {
      cases.push(dataset.labels[mass_i])
      // console.log(dataset.labels[mass_i])
    }
    // console.log('push case', dataset.data[mass_i][mass_fields.date] + ' ' + dataset.data[mass_i][mass_fields.case])
    mass_i += 1
    this_one += 1
    if (this_one >= 4) break
  }
  switch (notes.length) {
    default:
    case 0:
      break
    case 1:
      midi_notes.push(play_note( norm(notes[0], min, max) * nx.multiply.value + yy, 128, channel, exporting, 0))
      timings = [128]
      break
    case 2:
      midi_notes.push(play_note( norm(notes[0], min, max) * nx.multiply.value + yy, 64, channel, exporting, 0))
      midi_notes.push(play_note( norm(notes[1], min, max) * nx.multiply.value + yy, 64, channel, exporting, 64))
      timings = [64, 64]
      break
    case 3:
      midi_notes.push(play_note( norm(notes[0], min, max) * nx.multiply.value + yy, 43, channel, exporting, 0))
      midi_notes.push(play_note( norm(notes[1], min, max) * nx.multiply.value + yy, 43, channel, exporting, 43))
      midi_notes.push(play_note( norm(notes[2], min, max) * nx.multiply.value + yy, 42, channel, exporting, 85))
      timings = [43, 43 ,42]
      break
    case 4:
      midi_notes.push(play_note( norm(notes[0], min, max) * nx.multiply.value + yy, 32, channel, exporting, 0))
      midi_notes.push(play_note( norm(notes[1], min, max) * nx.multiply.value + yy, 32, channel, exporting, 32))
      midi_notes.push(play_note( norm(notes[2], min, max) * nx.multiply.value + yy, 32, channel, exporting, 64))
      midi_notes.push(play_note( norm(notes[3], min, max) * nx.multiply.value + yy, 32, channel, exporting, 96))
      timings = [32, 32, 32, 32]
      break
    case 5:
      midi_notes.push(play_note( norm(notes[0], min, max) * nx.multiply.value + yy, 22, channel, exporting, 0))
      midi_notes.push(play_note( norm(notes[1], min, max) * nx.multiply.value + yy, 21, channel, exporting, 22))
      midi_notes.push(play_note( norm(notes[2], min, max) * nx.multiply.value + yy, 21, channel, exporting, 43))
      midi_notes.push(play_note( norm(notes[3], min, max) * nx.multiply.value + yy, 32, channel, exporting, 64))
      midi_notes.push(play_note( norm(notes[4], min, max) * nx.multiply.value + yy, 32, channel, exporting, 96))
      timings = [22, 21, 21, 32, 32]
      break
    case 6:
      midi_notes.push(play_note( norm(notes[0], min, max) * nx.multiply.value + yy, 22, channel, exporting, 0))
      midi_notes.push(play_note( norm(notes[1], min, max) * nx.multiply.value + yy, 21, channel, exporting, 22))
      midi_notes.push(play_note( norm(notes[2], min, max) * nx.multiply.value + yy, 21, channel, exporting, 43))
      midi_notes.push(play_note( norm(notes[3], min, max) * nx.multiply.value + yy, 22, channel, exporting, 64))
      midi_notes.push(play_note( norm(notes[4], min, max) * nx.multiply.value + yy, 21, channel, exporting, 86))
      midi_notes.push(play_note( norm(notes[5], min, max) * nx.multiply.value + yy, 21, channel, exporting, 107))
      timings = [22, 21, 21, 22, 21, 21]
      break
    case 7:
      midi_notes.push(play_note( norm(notes[0], min, max) * nx.multiply.value, 16, channel, exporting, 0))
      midi_notes.push(play_note( norm(notes[1], min, max) * nx.multiply.value, 16, channel, exporting, 16))
      midi_notes.push(play_note( norm(notes[2], min, max) * nx.multiply.value, 16, channel, exporting, 32))
      midi_notes.push(play_note( norm(notes[3], min, max) * nx.multiply.value, 16, channel, exporting, 48))
      midi_notes.push(play_note( norm(notes[4], min, max) * nx.multiply.value, 22, channel, exporting, 64))
      midi_notes.push(play_note( norm(notes[5], min, max) * nx.multiply.value, 21, channel, exporting, 86))
      midi_notes.push(play_note( norm(notes[6], min, max) * nx.multiply.value, 21, channel, exporting, 107))
      timings = [16, 16, 16, 16, 22, 21, 21]
      break
    case 8:
      midi_notes.push(play_note( norm(notes[0], min, max) * nx.multiply.value, 16, channel, exporting, 0))
      midi_notes.push(play_note( norm(notes[1], min, max) * nx.multiply.value, 16, channel, exporting, 16))
      midi_notes.push(play_note( norm(notes[2], min, max) * nx.multiply.value, 16, channel, exporting, 32))
      midi_notes.push(play_note( norm(notes[3], min, max) * nx.multiply.value, 16, channel, exporting, 48))
      midi_notes.push(play_note( norm(notes[4], min, max) * nx.multiply.value, 16, channel, exporting, 64))
      midi_notes.push(play_note( norm(notes[5], min, max) * nx.multiply.value, 16, channel, exporting, 80))
      midi_notes.push(play_note( norm(notes[6], min, max) * nx.multiply.value, 16, channel, exporting, 96))
      midi_notes.push(play_note( norm(notes[7], min, max) * nx.multiply.value, 16, channel, exporting, 112))
      timings = [16, 16, 16, 16, 16, 16, 16, 16]
      break
    case 9:
      midi_notes.push(play_note( norm(notes[0], min, max) * nx.multiply.value, 11, channel, exporting, 0))
      midi_notes.push(play_note( norm(notes[1], min, max) * nx.multiply.value, 11, channel, exporting, 11))
      midi_notes.push(play_note( norm(notes[2], min, max) * nx.multiply.value, 10, channel, exporting, 22))
      midi_notes.push(play_note( norm(notes[3], min, max) * nx.multiply.value, 16, channel, exporting, 32))
      midi_notes.push(play_note( norm(notes[4], min, max) * nx.multiply.value, 16, channel, exporting, 48))
      midi_notes.push(play_note( norm(notes[5], min, max) * nx.multiply.value, 16, channel, exporting, 64))
      midi_notes.push(play_note( norm(notes[6], min, max) * nx.multiply.value, 16, channel, exporting, 80))
      midi_notes.push(play_note( norm(notes[7], min, max) * nx.multiply.value, 16, channel, exporting, 96))
      midi_notes.push(play_note( norm(notes[8], min, max) * nx.multiply.value, 16, channel, exporting, 112))
      timings = [11, 11, 10, 16, 16, 16, 16, 16, 16]
      break
    case 10:
      midi_notes.push(play_note( norm(notes[0], min, max) * nx.multiply.value, 11, channel, exporting, 0))
      midi_notes.push(play_note( norm(notes[1], min, max) * nx.multiply.value, 11, channel, exporting, 11))
      midi_notes.push(play_note( norm(notes[2], min, max) * nx.multiply.value, 10, channel, exporting, 22))
      midi_notes.push(play_note( norm(notes[3], min, max) * nx.multiply.value, 11, channel, exporting, 32))
      midi_notes.push(play_note( norm(notes[4], min, max) * nx.multiply.value, 11, channel, exporting, 43))
      midi_notes.push(play_note( norm(notes[5], min, max) * nx.multiply.value, 10, channel, exporting, 54))
      midi_notes.push(play_note( norm(notes[6], min, max) * nx.multiply.value, 16, channel, exporting, 64))
      midi_notes.push(play_note( norm(notes[7], min, max) * nx.multiply.value, 16, channel, exporting, 80))
      midi_notes.push(play_note( norm(notes[8], min, max) * nx.multiply.value, 16, channel, exporting, 96))
      midi_notes.push(play_note( norm(notes[9], min, max) * nx.multiply.value, 16, channel, exporting, 112))
      timings = [11, 11, 10, 11, 11, 10, 16, 16, 16, 16]
      break
    case 11:
      midi_notes.push(play_note( norm(notes[0], min, max) * nx.multiply.value, 11, channel, exporting, 0))
      midi_notes.push(play_note( norm(notes[1], min, max) * nx.multiply.value, 11, channel, exporting, 11))
      midi_notes.push(play_note( norm(notes[2], min, max) * nx.multiply.value, 10, channel, exporting, 22))
      midi_notes.push(play_note( norm(notes[3], min, max) * nx.multiply.value, 11, channel, exporting, 32))
      midi_notes.push(play_note( norm(notes[4], min, max) * nx.multiply.value, 11, channel, exporting, 43))
      midi_notes.push(play_note( norm(notes[5], min, max) * nx.multiply.value, 10, channel, exporting, 54))
      midi_notes.push(play_note( norm(notes[6], min, max) * nx.multiply.value, 11, channel, exporting, 64))
      midi_notes.push(play_note( norm(notes[7], min, max) * nx.multiply.value, 11, channel, exporting, 75))
      midi_notes.push(play_note( norm(notes[8], min, max) * nx.multiply.value, 10, channel, exporting, 86))
      midi_notes.push(play_note( norm(notes[9], min, max) * nx.multiply.value, 16, channel, exporting, 96))
      midi_notes.push(play_note( norm(notes[10], min, max) * nx.multiply.value, 16, channel, exporting, 112))
      timings = [11, 11, 10, 11, 11, 10, 11, 11, 10, 16, 16]
      break
    case 12:
      midi_notes.push(play_note( norm(notes[0], min, max) * nx.multiply.value, 11, channel, exporting, 0))
      midi_notes.push(play_note( norm(notes[1], min, max) * nx.multiply.value, 11, channel, exporting, 11))
      midi_notes.push(play_note( norm(notes[2], min, max) * nx.multiply.value, 10, channel, exporting, 22))
      midi_notes.push(play_note( norm(notes[3], min, max) * nx.multiply.value, 11, channel, exporting, 32))
      midi_notes.push(play_note( norm(notes[4], min, max) * nx.multiply.value, 11, channel, exporting, 43))
      midi_notes.push(play_note( norm(notes[5], min, max) * nx.multiply.value, 10, channel, exporting, 54))
      midi_notes.push(play_note( norm(notes[6], min, max) * nx.multiply.value, 11, channel, exporting, 64))
      midi_notes.push(play_note( norm(notes[7], min, max) * nx.multiply.value, 11, channel, exporting, 75))
      midi_notes.push(play_note( norm(notes[8], min, max) * nx.multiply.value, 10, channel, exporting, 86))
      midi_notes.push(play_note( norm(notes[9], min, max) * nx.multiply.value, 11, channel, exporting, 96))
      midi_notes.push(play_note( norm(notes[10], min, max) * nx.multiply.value, 11, channel, exporting, 107))
      midi_notes.push(play_note( norm(notes[11], min, max) * nx.multiply.value, 10, channel, exporting, 118))
      timings = [11, 11, 10, 11, 11, 10, 11, 11, 10, 11, 11, 10]
      break
  }
  const pedal_freq = scales.current().index(nx.pedal_tone.value - week + 4 - year, nx.octave.value)
  pedal_note = get_midi_note_for_frequency(pedal_freq)
  if (!exporting) {
    kalimba.play(pedal_freq, -12)
    if (cases.length) {
      document.querySelector('#cases').innerHTML = cases.join('<br>')
    }
  }
  if (total <= mass_i) {
    mass_i = 0
    i = 0
  } else {
    i += 1
  }

  if (notes.length) {
    return [i, midi_notes, timings, pedal_note]
  }
  return [i, [], [], pedal_note]
}

function get_midi_note_for_frequency(freq){
  let midi_note = ftom(freq)
  let cents = midi_note % 1
  if (cents > 0.5) {
    midi_note += 1
    cents -= 1
  }
  cents *= 2
  midi_note = Math.floor(midi_note)
  if (midi_note > 127) return 0
  const note = Tone.Frequency(Math.floor(midi_note), "midi").toNote()
  // console.log(freq, midi_note, note)
  return note
}

/* play next note according to sonification */

function play_next(){
  if (paused) return
  let note_time = 120000 / Tone.Transport.bpm.value * note_values[nx.timing.active][0]
  clearTimeout(playTimeout)
  playTimeout = setTimeout(play_next, note_time)
  let [new_i, notes, timings] = play_fn(i, bounds, diff, note_time)
  if (dataset.labels) {
    // const j = Math.floor(i / bounds.rows[0].length)
    // document.querySelector('#cases').innerHTML = dataset.labels[j]
  }

  i = new_i
  if (recording) {
    let timing = note_values[nx.timing.active][2]
    if (timing.length) timing = timing[i % timing.length]
    recorder.addEvent(new MidiWriter.NoteEvent({ pitch: notes, duration: 't' + timing }))
  }
}

function play() {
  i = 0
  mass_i = 0
  paused = false
  play_next()
}
function pause() {
  paused = true
}

/* bind selects */

function pick_dataset(key){
  console.log('pick dataset:', key, datasets[key])
  i = 0
  mass_i = 0
  window.location.hash = key
  dataset = datasets[key]
  bounds = get_bounds(dataset)
  diff = get_diff_bounds(bounds.rows)
  play_fn = dataset.play_fn
  max_i = dataset.max_i || (bounds.rows.length * bounds.rows[0].length)
  if (dataset.onPick) {
    dataset.onPick()
  }
}

/* build and bind the UI */

function ready() {
  scales.build_options(document.querySelector('#scale'))
  build_options(document.querySelector('#dataset'), datasets, pick_dataset)

  const dial_size = [50, 50]

	Tone.Transport.bpm.value = DEFAULT_BPM
  nx.tempo = new Nexus.Dial('#tempo', {
    size: dial_size,
    min: 10,
    max: 300,
    step: 1,
    value: DEFAULT_BPM,
  })
  update_value_on_change(nx.tempo, '#tempo', true, v => Tone.Transport.bpm.value = v)

  nx.timing = new Nexus.RadioButton('#timing', {
    size: [400,25],
    numberOfButtons: note_values.length,
    active: 6,
  })
  update_radio_value_on_change(nx.timing, '#timing', note_values)

  nx.duration = new Nexus.Dial('#duration', {
    size: dial_size,
    min: 0,
    max: 2,
    step: 0.01,
    value: 0.8,
  })
  update_value_on_change(nx.duration, '#duration', false)

  nx.offset = new Nexus.Dial('#offset', {
    size: dial_size,
    min: -24,
    max: 24,
    step: 1,
    value: -5,
  })
  update_value_on_change(nx.offset, '#offset', true)

  nx.octave = new Nexus.Dial('#octave', {
    size: dial_size,
    min: -4,
    max: 4,
    step: 1,
    value: 0,
  })
  update_value_on_change(nx.octave, '#octave', true)

  nx.multiply = new Nexus.Dial('#multiply', {
    size: dial_size,
    min: -64,
    max: 64,
    step: 1,
    value: 19,
  })
  update_value_on_change(nx.multiply, '#multiply', true)

  nx.interval = new Nexus.Dial('#interval', {
    size: dial_size,
    min: -64,
    max: 64,
    step: 1,
    value: 10,
  })
  update_value_on_change(nx.interval, '#interval', true)

  nx.pedal_tone = new Nexus.Dial('#pedal_tone', {
    size: dial_size,
    min: -24,
    max: 24,
    step: 1,
    value: -7,
  })
  update_value_on_change(nx.pedal_tone, '#pedal_tone', true)

  const play_button = document.querySelector('#play')
  play_button.addEventListener('click', () => {
    play()
  })

  const pause_button = document.querySelector('#pause')
  pause_button.addEventListener('click', () => {
    pause()
  })

  const export_midi_button = document.querySelector('#export_midi')
  export_midi_button.addEventListener('click', () => {
    export_pattern_as_midi(dataset, bounds, diff, nx.tempo.value, nx.timing.active, play_fn, max_i)
  })

  const record_midi_button = document.querySelector('#record_midi')
  record_midi_button.addEventListener('click', () => {
    if (recording) {
      record_midi_button.innerHTML = 'Record MIDI'
      document.body.classList.remove('recording')
      recording = false
      const writer = new MidiWriter.Writer([recorder])
      const blob = dataURItoBlob(writer.dataUri())
      saveAs(blob, 'Recording - ' + dataset.name + '.mid')
    } else {
      record_midi_button.innerHTML = 'Save Recording'
      document.body.classList.add('recording')
      recording = true
      recorder = new MidiWriter.Track()
      recorder.setTempo(nx.tempo.value)
    }
  })

  document.querySelector('.loading').classList.remove('loading')

  document.querySelector('#scale').value = '14'
  scales.pick(14)

  const initial_dataset = decodeURIComponent(window.location.hash.substr(1)) || 'Mass Shootings'
  document.querySelector('#dataset').value = initial_dataset
  pick_dataset(initial_dataset)

  // play_next()
}

/* keys */

keys.listen(index => {
  nx.offset.value = index
  nx.offset.update(index)
})