#!/usr/bin/env python

from __future__ import division
import ipdb
import os
import random
import sys
import time


import parse
import topsort
import yaml

import tree

random.seed(time.time())


def main():
    composition = {
        "fm_test": {
            "intro": {
                "melody": {  # Instrument 'melody'
                    "score_line": "i2 %(time)f %(duration)f 7000 %(octave)d.%(note)s 2 6 5 1",

                        "u": ["C/4 C/4 C/4 C/4"],
                    },
                },
            },
        },
        "sync_test": {
            "body": {
#                "lead_instr": {  # Instrument 'melody'
#                    "score_line": "i1 %(time)f %(duration)f 7000 %(octave)d.%(note)s %(octave)d.%(note)s 0 6",
##                    "score_line": "i5 %(time)f %(duration)f 7000 %(octave)d.%(note)s",
#                    "octave": 7,
#                    "duration": 30,
#                    "grammars": {  # Notes for this instrument to use in this piece
##                        "u": ["A ^A B C ^C D ^D E F ^F G ^G"],
#                        "u": ["A/2, B/2, C/2 D/2 (u)", "D/2' D/2' D/2' D/2' (v)"],
#                        "v": ["C/2 C/2 C/2 C/2 (w)"],
#                        "w": ["E/2 F/2 E/2 F/2 (u)"],

#                    },
#                },
                "follow_instr": {  # Instrument 'melody'
#                    "score_line": "i2 %(time)f %(duration)f 7000 %(octave)d.%(note)s 1",
                    "score_line": "i3 %(time)f %(duration)f 7000 %(octave)d.%(note)s",
#                    "sync": "lead_instr",
                    "octave": 2,
                    "duration": 30,
                    "grammars": {  # Notes for this instrument to use in this piece
#                        "u": ["A ^A B C ^C D ^D E F ^F G ^G"],
                        "u": ["E F G E (v)"],
                        "v": ["G A A A (e)", "G A A A (v)"],
                        "e": ["B A G A (u)"],

                    },
                },
#                "instr2": {  # Instrument 'melody'
#                    "score_line": "i1 %(time)f %(duration)f 7000 %(octave)d.%(note)s %(octave)d.%(note)s 0 6",
#                    "score_line": "i1 %(time)f %(duration)f 7000 %(octave)d.%(note)s %(octave)d.%(note)s",
#                    "octave": 5,
#                    "duration": 30,

                        subsection[instr]["sync"] = None
                    unordered_instrs.append([subsection[instr]["sync"], instr])
                ordered_instrs = topsort.topsort(unordered_instrs)
                ordered_instrs.remove(None)  # None used as a placeholder for sort order for instruments with no sync setting

                instrs = []
                syncs = {}

                for instr in ordered_instrs:
                    print ";Instrument " + instr
                    instr = subsection[instr]
                    max_time = instr["duration"]
                    instr_score, syncs = render_instr(instr, syncs, max_time)
                    instrs.append(instr_score)
                    for line in generate_csound_score(instr_score, instr["score_line"], subsection_start):
                        print line
                longest_score = max(instrs, key=lambda i: score_len(i))
                subsection_start += score_len(longest_score)
                section_start += score_len(longest_score)

            except KeyError:
                pass





def render_instr(instr, syncs, max_time):
    for g in instr["grammars"]:
        for i in range(len(instr["grammars"][g])):
            instr["grammars"][g][i] = parse.parse(instr["grammars"][g][i], default_octave=instr["octave"])

    total = 0
    for n in score:
        if not isinstance(n, tree.Tree):
            total += n.duration
    return total






def generate_csound_score(score, score_line, t):
    csound_note_values = {
        "C": "00",
        "C#": "01", "Db": "01",
        "D": "02",
        "D#": "03", "Eb": "03",
        "E": "04",
        "F": "05",
        "F#": "06", "Gb": "06",
        "G": "07",
        "G#": "08", "Ab": "08",
        "A": "09",
        "A#": "10", "Bb": "10",
        "B": "11",
    }
    csound_score = []
    for token in score:
        if isinstance(token, parse.Chord):  # Chords
            for note in token.chord: 
                note = csound_note_values[note]
                csound_score.append(score_line % {"time": t, "octave": token.octave, "note": note, "duration": token.duration})
                csound_score.append(score_line % {"time": t, "octave": token.octave, "note": note, "duration": token.duration})

        elif isinstance(token, parse.Note):  # Individual notes
            note = csound_note_values[token.value]
            csound_score.append(score_line % {"time": t, "octave": token.octave, "note": note, "duration": token.duration})

        elif isinstance(token, tree.Tree):
            continue
        t += token.duration

    return csound_score


if __name__ == "__main__": main()