/**
 * Shared utility: infer a `TTSAudioFormat` from a file path.
 *
 * Used by the CLI generate/stream handlers (m2) to set `stt.format` so
 * `STTProcessor.transcribe()` can fail fast on incompatible provider/format
 * combinations (e.g. MP3 to azure-stt). Pulled into a single helper to
 * avoid duplicating the 11-element format list across two CLI handlers.
 */
const VALID_FORMATS = [
    "mp3",
    "wav",
    "ogg",
    "opus",
    "m4a",
    "flac",
    "webm",
    "mp4",
    "mpeg",
    "mpga",
    "pcm16",
];
/**
 * Returns the `TTSAudioFormat` that matches the file extension of `path`,
 * or `undefined` when the path is missing or its extension isn't a known
 * audio format. The check is case-insensitive.
 */
export function inferAudioFormatFromPath(path) {
    if (!path) {
        return undefined;
    }
    const ext = path.toLowerCase().split(".").pop();
    return ext && VALID_FORMATS.includes(ext) ? ext : undefined;
}
