import type { videoInfo } from 'ytdl-core';
import ytpl from 'ytpl';

const videoViews = (info: videoInfo): number => {
  const views = info.player_response.videoDetails.viewCount;
  return parseInt(views, 10);
};

const sourceDurationSeconds = (items: ytpl.Item[]): number => {
  return items
    ?.map((video) => {
      return video?.durationSec ?? 0;
    })
    ?.reduce((cur, next) => cur + next, 0) ?? 0;
};

const sourceDurationHours = (items: ytpl.Item[]): number => {
  const seconds = sourceDurationSeconds(items);
  return seconds > 0 ? Math.ceil(seconds / 3600) : 0;
};

/**
 * Return value is in cents
 */
const sourceTranscriptionCost = (items: ytpl.Item[]): number => {
  const hours = sourceDurationHours(items);
  return hours * 0.5 * 100;
};

/**
 *
 */
const YouTubeUtil = {
  videoViews,
  sourceDurationSeconds,
  sourceDurationHours,
  sourceTranscriptionCost,
};

export default YouTubeUtil;