"""Collection of converters"""
from music21 import converter, note, stream, meter, chord, environment
from ziffers import zparse, Ziffers, Pitch, Rest, Chord


def to_music21(expression: str | Ziffers, **options):
    """Helper for passing options to the parser"""
    converter.registerSubconverter(ZiffersMusic21)

    if isinstance(expression, Ziffers):
        if options:
            options["preparsed"] = expression
        else:
            options = {"preparsed": expression}
        options = {"ziffers": options}
        return converter.parse("PREPARSED", format="ziffers", keywords=options)

    if options:
        options = {"ziffers": options}
        return converter.parse(expression, format="ziffers", keywords=options)

    test = converter.parse(expression, format="ziffers")
    return test


def set_musescore_path(path: str):
    """Helper for setting the Musescore path"""
    settings = environment.UserSettings()
    # Default windows path:
    # 'C:\\Program Files\\MuseScore 3\\bin\\MuseScore3.exe'
    settings["musicxmlPath"] = path
    settings["musescoreDirectPNGPath"] = path


class ZiffersMusic21(converter.subConverters.SubConverter):
    """Ziffers converter to Music21"""

    registerFormats = ("ziffers",)
    registerInputExtensions = ("zf",)

    def parseData(self, dataString, number=None):
        """Parses Ziffers string to Music21 object"""
        # Look for options in keywords object
        keywords = self.keywords["keywords"]
        if "ziffers" in keywords:
            options = keywords["ziffers"]
            if "preparsed" in options:
                parsed = options["preparsed"]
            else:
                parsed = zparse(dataString, **options)
        else:
            parsed = zparse(dataString)

        note_stream = stream.Part()
        if "time" in options:
            m_item = meter.TimeSignature(options["time"])  # Common time
        else:
            m_item = meter.TimeSignature("c")  # Common time

        note_stream.insert(0, m_item)
        for item in parsed:
            if isinstance(item, Pitch):
                m_item = note.Note(item.note)
                m_item.duration.quarterLength = item.duration * 4
            elif isinstance(item, Rest):
                m_item = note.Rest(item.duration * 4)
            elif isinstance(item, Chord):
                m_item = chord.Chord(item.notes)
                m_item.duration.quarterLength = item.durations * 4
            note_stream.append(m_item)
        self.stream = note_stream.makeMeasures()