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#!/usr/bin/env python

from __future__ import division
import os
import pdb
import random
import sys
import time
random.seed(time.time())

import parse
import topsort
import yaml

import tree

random.seed(time.time())

def main():
    key = "A"
    bps = 60/60
    tempo = 1/bps
    max_duration = 1

    composition = yaml.load(open("score.yaml"))

    composition = {
        "fm_test": {
            "intro": {
                "melody": {  # Instrument 'melody'
                    "score_line": "i2 %(time)f %(duration)f 7000 %(octave)d.%(note)s 2 6 5 1",
                    "octave": 8,
                    "duration": 10,
                    "grammars": {  # Notes for this instrument to use in this piece
                        "u": ["G/2 G/2 | G/4 G/4 A/4 A/4 | A/2 A/2 | G | G | A | A | A3 (w)"],
                        "w": ["E | E | F | F | G/2 G/2 | G3 (u)"],
                    },
                },
            },
        },
        "verse1": {
            "intro": {
                "melody": {  # Instrument 'melody'
                    "score_line": "i2 %(time)f %(duration)f 7000 %(octave)d.%(note)s 1",
                    "octave": 8,
    max_t = 0  # max time encountered so far. Used for movement timing
    progression = "chorus"

    for movement in progression.split():
        for section in ["intro", "core", "outro"]:
                    "duration": 10,
                    "grammars": {  # Notes for this instrument to use in this piece
                        "u": ["G/2 G/2 | G/4 G/4 A/4 A/4 | A/2 A/2 | G | G | A | A | A3 (w)"],
                        "w": ["E | E | F | F | G/2 G/2 | G3 (u)"],
                    },
                },
            },
            "body": {
                "melody": {  # Instrument 'melody'
                    "score_line": "i2 %(time)f %(duration)f 7000 %(octave)d.%(note)s 1",
                    "octave": 8,
                    "duration": 10,
            if section in composition[movement].keys():
                try:
                    "grammars": {  # Notes for this instrument to use in this piece
                        "u": ["C | G/2 G/2 | G/2 G/2 | C | B, | F' | C | F | C | B | F | (w)"],
                        "w": ["E/4 A/4 D/4 G/4 | F/4 F/4 B2 | (u)"],
                    },
                },
            },
            "outro": {
                    render_order = topsort.topsort([[composition[movement][section][instrument]["sync"], instrument] if "sync" in composition[movement][section][instrument].keys() else [None, instrument] for instrument in composition[movement][section]])
                except topsort.CycleError as ex:
                    print "Your instruments are synced in a circle! This makes no sense!"
                    print movement, section
                "melody": {  # Instrument 'melody'
                    "score_line": "i2 %(time)f %(duration)f 7000 %(octave)d.%(note)s 1",
                    "octave": 8,
                    "duration": 10,
                    print ex
                    sys.exit(1)
                

                    "grammars": {  # Notes for this instrument to use in this piece
                        "u": ["C/4 C/4 C/4 C/4 | z2"],
                    },
                },
            },
#    for comp_name in progression.split():
#        comp_start_time = max_t
#        for instr_name, instr in composition[comp_name].iteritems():
#            generated_score = generate_score(instr["score"], instr["grammars"])  # Fill in the scores by generating them based on the grammars
##            print generated_score
#            score = parse.parse(generated_score, default_octave=instr["octave"])  # Return Node/Chord objects
        },
        "verse2": {
            "body": {
                "melody": {  # Instrument 'melody'
                    "score_line": "i2 %(time)f %(duration)f 7000 %(octave)d.%(note)s 1",
                    "octave": 8,
#
#            # Generate timestamps for the notes 
#            t = comp_start_time
                    "duration": 30,
                    "grammars": {  # Notes for this instrument to use in this piece
                        "u": ["C | C | C | C | F/2 F/2 | F/2 F/2 | (u)", "D | D | G/2 A/2 | D | D | (u)"],
#            for note in range(len(score)):
#                score[note].time = t
#                score[note].duration *= tempo
#                t += score[note].duration
##                print "time difference =", t-comp_start_time
##                print "instrument duration =",composition[comp_name][instr_name]["duration"]
#                if (t-comp_start_time) > float(composition[comp_name][instr_name]["duration"]):
                    },
                },
                "harmony": {  # Instrument 'melody'
                    "score_line": "i3 %(time)f %(duration)f 4000 %(octave)d.%(note)s 2 3 5 3",
                    "octave": 8,
                    "duration": 30,
                    "grammars": {  # Notes for this instrument to use in this piece
                        "u": ["C | C | z | C | C | z/2 F/4 F/2 F/2 | F/2 F/2 | z (u)", "D | D | G/2 A/2 | D | D | z (u)"],
                    },
                },
                "percussion": {  # Instrument 'melody'
                    "score_line": "i1 %(time)f %(duration)f 7000 %(octave)d.%(note)s %(octave)d.%(note)s 0 6",
                    "octave": 8,
                    "duration": 30,
                    "grammars": {  # Notes for this instrument to use in this piece
                        "u": ["C/4 C/4 C/4 C/4 | F/2 F/2 | F/2 F/2 | (u)", "D/4 D/4 G/4 A/4 | D | D | (v)"],
                        "v": ["C | D | E | F | E | D | C | (u)",],
                    },
                },
            },
            "outro": {
                "percussion": {  # Instrument 'melody'
                    "score_line": "i1 %(time)f %(duration)f 7000 %(octave)d.%(note)s %(octave)d.%(note)s 0 6",
                    "octave": 8,
                    "duration": 30,
##                    print "here"
#                    score = score[:note]
#                    break
#                max_t = t if t > max_t else max_t
#            composition[comp_name][instr_name]["score"] = score

                    "grammars": {  # Notes for this instrument to use in this piece
                        "u": ["C/4 C/4 C/4 C/4"],
                    },
                },
            },
        },
    }
    # Must be done after all note times keyed in, else you can't coordinate melodies with the rhythm chords
    print '''f1  0  512  10  1
            f2 0 8192 10 .24 .64 .88 .76 .06 .5 .34 .08
            f3 0 1025 10 1
    print '''f1 0 512 10 1
f2 0 8192 10 .24 .64 .88 .76 .06 .5 .34 .08
f3 0 1025 10 1
t 0 100
    '''
    for comp_name in progression.split():
        print "; Movement:", comp_name
        for instr_name, instr in composition[comp_name].iteritems():
            composition[comp_name][instr_name]["score"] = transliterate_score(composition[comp_name][instr_name]["score"], key)
#            print "\nMovement %s instrument %s" % (comp_name, instr_name)
#            print composition[comp_name][instr_name]["score"] 

    section_start = 0
#    for section in ["verse1", "verse2"]:
    for section in ["fm_test"]:
        print "; Section " + section
        subsection_start = section_start
        section = composition[section]
            final_score = generate_csound_score(composition[comp_name][instr_name]["score"], composition[comp_name][instr_name]["score_line"])
            for line in final_score:
                print line
            

        for subsection in ["intro", "body", "outro"]:
            try:
                print "; Subsection " + subsection
                subsection = section[subsection]
                instrs = []
def make_scale(key):
    notes = ["A", "A#", "B", "C", "C#", "D", "D#", "E", "F", "F#", "G", "G#"]
    scale = [key]
    pos = notes.index(key)
                for instr in subsection:
                    print ";Instrument " + instr
                    instr = subsection[instr]
                    sync = None
    progression = [2,2,1,2,2,2,1]
    for p in progression:
        pos = (pos + p) % 12
        scale.append(notes[pos])
    return scale

                    max_time = instr["duration"]
                    instr_score = render_instr(instr, sync, 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 generate_score(score, grammars):

    while 1:
        found_substitution = False
        for key,value in grammars.iteritems():
            if score.find(key) != -1:
                found_substitution = True
                while score.find(key) != -1:
def render_instr(instr, sync, max_time):
    grammars = instr["grammars"]
    for g in instr["grammars"]:
        for i in range(len(grammars[g])):
            grammars[g][i] = parse.parse(grammars[g][i])
    init_node = random.choice(instr["grammars"].keys())
    init_score = random.choice(instr["grammars"][init_node])
    score = init_score
    while True:
                    score = score.replace(key, random.choice(grammars[key]), 1)
#                    print scoe
                    if len(score.split()) > 2000:
                        for k in grammars.keys():
        time_remaining = max_time - score_len(score)
        try:
            score = choose_node(score, grammars, time_remaining, sync)
                            score = score.replace(k, "")
                        return score
        except ValueError:
        if found_substitution is False:
            break
    return score

def transliterate_score(score, key):
    scale = make_scale(key)
    scale_conversion = {
        "I": 1,
        "II": 2,
        "III": 3,
        "IV": 4,
        "V": 5,
        "VI": 6,
        "VII": 7,
        "VIII": 8,
    }
    keyed_score = []
    for i in range(len(score)):
        if isinstance(score[i], parse.Note):
            score[i].value = scale[scale_conversion[score[i].value]-1]
        elif isinstance(score[i], parse.Chord):
            chord = []

def choose_node(score, grammars, time_remaining, sync):
    if time_remaining <= 0:
        raise ValueError("No time remaining in the score")
    node = None
    node_index = None
    for item in range(len(score)):
        if isinstance(score[item], tree.Tree):
            node = score[item].name
            node_index = item
    if node is None:
        raise ValueError("No more nodes to fill in")
    options = []
            root_note_index = scale.index(key) + scale_conversion[score[i].value]
            chord.append(scale[root_note_index])
    for g in range(len(grammars[node])):
        if score_len(grammars[node][g]) <= time_remaining:
            options.append(grammars[node][g])
            chord.append(scale[(root_note_index+3) % 8])
            if score[i].chord_type == "m":  # Minor chords, flat the 5th
    if len(options) == 0:
        raise ValueError("No available grammars that will fit in the score")
    if sync:
                chord.append(scale[(root_note_index+4) % 8])
            else:
                chord.append(scale[(root_note_index+5) % 8])
            score[i].chord = chord
        elif isinstance(score[i], parse.Rest):
            pass
    return score
        pass
    else:
        phrase = random.choice(options)
    score = score[:node_index-1] + phrase + score[node_index+1:]
    return score


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


def generate_csound_score(score, score_line):
def generate_csound_score(score, score_line, t):
    csound_note_values = {
        "C": "00",
        "C#": "01",
        "D": "02",
        "D#": "03",
        "E": "04",
        "F": "05",
        "F#": "06",
        "G": "07",
        "G#": "08",
        "A": "09",
        "A#": "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": token.time, "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": token.time, "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, tree.Tree):
            continue
        t += token.duration
    return csound_score


if __name__ == "__main__": main()