from __future__ import annotations

DEFAULT_STYLE = "Medium Swing"

BUILT_IN_STYLES = (
  # Jazz
  "Afro 12/8",
  "Ballad Double Time Feel",
  "Ballad Even",
  "Ballad Melodic",
  "Ballad Swing",
  "Blue Note",
  "Bossa Nova",
  "Doo Doo Cats",
  "Double Time Swing",
  "Even 8ths",
  "Even 8ths Open",
  "Even 16ths",
  "Guitar Trio",
  "Gypsy Jazz",
  "Latin",
  "Latin/Swing",
  "Long Notes",
  "Medium Swing",
  "Medium Up Swing",
  "Medium Up Swing 2",
  "New Orleans Swing",
  "Second Line",
  "Slow Swing",
  "Swing Two/Four",
  "Trad Jazz",
  "Up Tempo Swing",
  "Up Tempo Swing 2",
  # Latin
  "Argentina: Tango",
  "Brazil: Bossa Acoustic",
  "Brazil: Bossa Electric",
  "Brazil: Samba",
  "Cuba: Bolero",
  "Cuba: Cha Cha Cha",
  "Cuba: Son Montuno 2-3",
  "Cuba: Son Montuno 3-2",
  # Pop
  "Bluegrass",
  "Country",
  "Disco",
  "Funk",
  "Glam Funk",
  "House",
  "Reggae",
  "RnB",
  "Rock",
  "Rock 12/8",
  "Shuffle",
  "Slow Rock",
  "Smooth",
  "Soul",
  "Virtual Funk",
)

BUILT_IN_STYLE_SET = frozenset(BUILT_IN_STYLES)

STYLE_ALIASES = {
  "Med.": DEFAULT_STYLE,
  "Med. Swing": DEFAULT_STYLE,
  "Medium": DEFAULT_STYLE,
}

def canonical_style(value: object) -> str:
  if value is None:
    return DEFAULT_STYLE
  if not isinstance(value, str):
    raise ValueError("style must be a string")
  style = value.strip()
  if not style:
    return DEFAULT_STYLE
  style = STYLE_ALIASES.get(style, style)
  if style not in BUILT_IN_STYLE_SET:
    raise ValueError(f"style {value!r} is not a supported player style")
  return style