"""Validation Constants."""


"""For any changes that are made to audio metadata requirements, please update:
https://github.com/theorchard/frontend-distribution/blob/b0f7ea92b0a2df8df145777abdb1b04b2c59c547/src/selectors/track-audio-validation-errors.js
"""  # noqa: E501


# audio metadata fields
FILE_SIZE_BYTES = 'file_size_bytes'
MIME_TYPE = 'mime_type'
CONTAINER = 'container'
CODEC = 'codec'
DURATION_MS = 'duration_ms'
BIT_RATE = 'bit_rate'
CHANNELS = 'channels'
SAMPLE_RATE = 'sample_rate'
BITS_PER_SAMPLE = 'bits_per_sample'

# computed fields
LOSSLESS = 'lossless'

# mime types
MIME_TYPE_FILE_WAV = 'audio/wav'
MIME_TYPE_FILE_XWAV = 'audio/x-wav'
MIME_TYPE_FILE_VNDWAV = 'audio/vnd.wave'
MIME_TYPE_FILE_FLAC = 'audio/flac'
MIME_TYPE_FILE_XFLAC = 'audio/x-flac'
MIME_TYPE_FILE_MP4 = 'audio/mp4'
MIME_TYPE_FILE_XM4A = 'audio/x-m4a'
WAV_MIME_TYPES = {
    MIME_TYPE_FILE_WAV,
    MIME_TYPE_FILE_XWAV,
    MIME_TYPE_FILE_VNDWAV,
}
FLAC_MIME_TYPES = {
    MIME_TYPE_FILE_FLAC,
    MIME_TYPE_FILE_XFLAC,
}
MP4_MIME_TYPES = {
    MIME_TYPE_FILE_MP4,
    MIME_TYPE_FILE_XM4A,
}

# containers
WAVE_CONTAINER_NAME = 'wave'
FLAC_CONTAINER_NAME = 'flac'
MPEG4_CONTAINER_NAME = 'mpeg-4'
CONTAINER_TO_MIME_TYPE = {
    WAVE_CONTAINER_NAME: MIME_TYPE_FILE_WAV,
    FLAC_CONTAINER_NAME: MIME_TYPE_FILE_FLAC,
    MPEG4_CONTAINER_NAME: MIME_TYPE_FILE_MP4,
}
ALLOWED_CONTAINERS = set(CONTAINER_TO_MIME_TYPE.keys())

# codecs
PCM_CODEC_NAME = 'pcm'
FLAC_CODEC_NAME = 'flac'
ALAC_CODEC_NAME = 'alac'
MIME_TYPE_TO_LOSSLESS_CODEC = {
    **{mime_type: PCM_CODEC_NAME for mime_type in WAV_MIME_TYPES},
    **{mime_type: FLAC_CODEC_NAME for mime_type in FLAC_MIME_TYPES},
    **{mime_type: ALAC_CODEC_NAME for mime_type in MP4_MIME_TYPES},
}
ALLOWED_MIME_TYPES = set(MIME_TYPE_TO_LOSSLESS_CODEC.keys())
ALLOWED_CODECS = set(MIME_TYPE_TO_LOSSLESS_CODEC.values())

# bits per sample and sample rates
BITS_PER_SAMPLE_TO_ALLOWED_SAMPLE_RATES = {
    16: {44100, 48000},
    24: {44100, 48000, 88200, 96000, 176400, 192000, 352800, 384000}
}
ALLOWED_BITS_PER_SAMPLE = set(BITS_PER_SAMPLE_TO_ALLOWED_SAMPLE_RATES.keys())

# file size
MIN_FILE_SIZE_BYTES_INCREASE_PER_SECOND = 78500