# Standard library imports
from dataclasses import dataclass, field
from enum import auto, Enum
from typing import Any, Optional

# PyQt imports
from PyQt6.QtCore import pyqtSignal, QObject

# Third party imports

# App imports
import helpers


class Col(Enum):
    START_GAP = 0
    TITLE = auto()
    ARTIST = auto()
    INTRO = auto()
    DURATION = auto()
    START_TIME = auto()
    END_TIME = auto()
    LAST_PLAYED = auto()
    BITRATE = auto()
    NOTE = auto()


@helpers.singleton
@dataclass
class MusicMusterSignals(QObject):
    """
    Class for all MusicMuster signals. See:
     - https://zetcode.com/gui/pyqt5/eventssignals/
     - https://stackoverflow.com/questions/62654525/
        emit-a-signal-from-another-class-to-main-class
    and Singleton class at
    https://refactoring.guru/design-patterns/singleton/python/example#example-0
    """

    begin_reset_model_signal = pyqtSignal(int)
    enable_escape_signal = pyqtSignal(bool)
    end_reset_model_signal = pyqtSignal(int)
    next_track_changed_signal = pyqtSignal()
    resize_rows_signal = pyqtSignal(int)
    row_order_changed_signal = pyqtSignal(int)
    search_songfacts_signal = pyqtSignal(str)
    search_wikipedia_signal = pyqtSignal(str)
    show_warning_signal = pyqtSignal(str, str)
    span_cells_signal = pyqtSignal(int, int, int, int, int)
    status_message_signal = pyqtSignal(str, int)
    track_ended_signal = pyqtSignal()

    def __post_init__(self):
        super().__init__()


@dataclass
class TrackFileData:
    """
    Simple class to track details changes to a track file
    """

    new_file_path: str
    track_id: int = 0
    track_path: Optional[str] = None
    obsolete_path: Optional[str] = None
    tags: dict[str, Any] = field(default_factory=dict)
    audio_metadata: dict[str, str | int | float] = field(default_factory=dict)