"""Constants related to artist roles."""

PERFORMER = 'performer'
COMPOSER = 'composer'
FEATURING = 'featuring'
REMIXER = 'remixer'
PRODUCER = 'producer'
TRACK_ARTIST_ROLE = 'track_artist'
ORCHESTRA = 'orchestra'
CONDUCTOR = 'conductor'
ENSEMBLE = 'ensemble'


NON_REQUIRED_CLASSICAL_ARTIST_ROLES = (
    'orchestra', 'ensemble', 'conductor'
)

NON_REQUIRED_ARTIST_ROLES = (
    'remixer'
)

CLASSICAL_ARTIST_ROLES = [
    'performer', 'composer', 'orchestra', 'ensemble', 'conductor'
]
NON_CLASSICAL_ARTIST_ROLES = [
    'performer', 'featuring', 'feature_to_primary', 'remixer', 'producer'
]
SOUNDTRACK_AND_WORLDMUSIC_ARTIST_ROLES = [
    'performer', 'featuring', 'feature_to_primary', 'remixer', 'producer', 'composer'
]
TRACK_ARTIST = [
    'performer', 'composer', 'conductor', 'ensemble', 'orchestra'
]