import * as faceapi from "@vladmandic/face-api";
import * as path from "path";
import fs from "fs";

// SsdMobilenetv1Options
export const minConfidence = 0.5;

// TinyFaceDetectorOptions
export const inputSize = 408;
export const scoreThreshold = 0.5;

export const getFaceDetectorOptions = (net: faceapi.NeuralNetwork<any>) => {
  return net === faceapi.nets.ssdMobilenetv1
    ? new faceapi.SsdMobilenetv1Options({ minConfidence })
    : new faceapi.TinyFaceDetectorOptions({ inputSize, scoreThreshold });
};

export function saveFile(basePath: string, fileName: string, buf: Buffer) {
  if (!fs.existsSync(basePath)) {
    fs.mkdirSync(basePath);
  }

  fs.writeFileSync(path.resolve(basePath, fileName), buf, "base64");
}

export const delay = (ms: number): Promise<void> => {
  return new Promise((resolve) => {
    setTimeout(() => {
      resolve();
    }, ms);
  });
};