# -*- coding: utf-8 -*-
"""

*** Description ***

    Converts a progression to chords and plays them using fluidsynth.

    You should specify the SF2 soundfont file.
"""

from mingus.core import progressions, intervals
from mingus.core import chords as ch
from mingus.containers import NoteContainer, Note
from mingus.midi import fluidsynth
import time
import sys
from random import random

SF2 = "/usr/share/sounds/sf2/FluidR3_GM.sf2"
progression = [
    "I",
    "vi",
    "ii",
    "iii7",
    "I7",
    "viidom7",
    "iii7",
    "V7",
]
key = "C"
chords = progressions.to_chords(progression, key)
if not fluidsynth.init(SF2):
    print("Couldn't load soundfont", SF2)
    sys.exit(1)
while 1:
    i = 0
    for chord in chords:
        c = NoteContainer(chords[i])
        l = Note(c[0].name)
        p = c[1]
        l.octave_down()
        print(ch.determine(chords[i])[0])

        # Play chord and lowered first note

        fluidsynth.play_NoteContainer(c)
        fluidsynth.play_Note(l)
        time.sleep(1.0)

        # Play highest note in chord

        fluidsynth.play_Note(c[-1])

        # 50% chance on a bass note

        if random() > 0.50:
            p = Note(c[1].name)
            p.octave_down()
            fluidsynth.play_Note(p)
        time.sleep(0.50)

        # 50% chance on a ninth

        if random() > 0.50:
            l = Note(intervals.second(c[0].name, key))
            l.octave_up()
            fluidsynth.play_Note(l)
        time.sleep(0.25)

        # 50% chance on the second highest note

        if random() > 0.50:
            fluidsynth.play_Note(c[-2])
        time.sleep(0.25)
        fluidsynth.stop_NoteContainer(c)
        fluidsynth.stop_Note(l)
        fluidsynth.stop_Note(p)
        i += 1
    print("-" * 20)