"""Adds an album template field for formatted album types."""

from __future__ import annotations

from typing import TYPE_CHECKING

from beets.plugins import BeetsPlugin

from .musicbrainz import VARIOUS_ARTISTS_ID

if TYPE_CHECKING:
    from beets.library import Album


class AlbumTypesPlugin(BeetsPlugin):
    """Adds an album template field for formatted album types."""

    def __init__(self):
        """Init AlbumTypesPlugin."""
        super().__init__()
        self.album_template_fields["atypes"] = self._atypes
        self.config.add(
            {
                "types": [
                    ("ep", "EP"),
                    ("single", "Single"),
                    ("soundtrack", "OST"),
                    ("live", "Live"),
                    ("compilation", "Anthology"),
                    ("remix", "Remix"),
                ],
                "ignore_va": ["compilation"],
                "bracket": "[]",
            }
        )

    def _atypes(self, item: Album):
        """Returns a formatted string based on album's types."""
        types = self.config["types"].as_pairs()
        ignore_va = self.config["ignore_va"].as_str_seq()
        bracket = self.config["bracket"].as_str()

        # Assign a left and right bracket or leave blank if argument is empty.
        if len(bracket) == 2:
            bracket_l = bracket[0]
            bracket_r = bracket[1]
        else:
            bracket_l = ""
            bracket_r = ""

        res = ""
        albumtypes = item.albumtypes
        is_va = item.mb_albumartistid == VARIOUS_ARTISTS_ID
        for type_ in types:
            if type_[0] in albumtypes and type_[1]:
                if not is_va or (type_[0] not in ignore_va and is_va):
                    res += f"{bracket_l}{type_[1]}{bracket_r}"

        return res