export interface ModelParam {
  modelToUse: string;
  threshold: number;
  bufferCount: number;
  onKeywordDetected: (result: {
    prediction: number;
    model: string;
    cntBuf: number;
  }) => void;
}

export interface KeywordDetectorHealth {
  activated: boolean;
  listening: boolean;
  initialized: boolean;
  licensed: boolean;
  audio: {
    isReceiving: boolean;
    lastReceivedAt: string | null;
    msSinceLastReceived: number | null;
    framesReceived: number;
    samplesReceived: number;
  };
  wakeWord: {
    isProcessing: boolean;
    lastPredictionAt: string | null;
    msSinceLastPrediction: number | null;
    predictionsCalculated: number;
    lastPrediction: {
      model: string;
      score: number;
      threshold: number;
      fakeThreshold: number;
      aboveThreshold: boolean;
      consecutiveMatches: number;
      at: string;
    } | null;
    lastKeywordDetectedAt: string | null;
    detections: number;
  };
  lastError: {
    message: string;
    at: string | null;
  } | null;
}

export class KeywordDetector {
  constructor(
    modelsFolderPath: string,
    modelToUse: string,
    threshold: number,
    bufferCount: number,
    onKeywordDetected: (result: {
      prediction: number;
      model: string;
      cntBuf: number;
    }) => void,
    wasmBasePath?: string,
    audioWorkletPath?: string
  );

  constructor(
    modelsFolderPath: string,
    modelParams: ModelParam[],
    wasmBasePath?: string,
    audioWorkletPath?: string
  );

  setLicense(licenseKey: string): Promise<boolean>;
  init(): Promise<void>;
  startListening(): Promise<void>;
  stopListening(): Promise<void>;
  getHealth(): Promise<KeywordDetectorHealth>;
}