import { BaseLifeCycle } from 'lifeCycle';

// 分割为指定格式
export const splitSecondToTime =  (second,sep) => {
  var seps = sep.split('|');
  var str = '';

  var days = parseInt((second / 60 / 60 / 24).toString());
  var hours = parseInt((second / 60 / 60).toString()) % 24;
  var minutes = parseInt((second / 60).toString()) % 60;
  var seconds = second % 60;

  if(seps.length == 3){ // 一般为时分秒
    str = (hours > 0 ? (hours + seps[0]) : '') +
      (minutes > 0 ? (minutes + seps[1]) : '') +
      (seconds >= 0 ? (seconds + seps[2]) : '');
  }else if(seps.length == 4){ //一般为天时分秒
    str = (days > 0 ? (days + seps[0]) : '') +
      (hours > 0 ? (hours + seps[1]) : '') +
      (minutes > 0 ? (minutes + seps[2]) : '') +
      (seconds >= 0 ? (seconds + seps[3]) : '');
  }

  return str;
}

/**
 * 秒转时分秒
 * @param second 当前秒数
 * @param sep 分隔符
 * @param pure 是否纯输出秒数
 * @returns {any}
 */
export const secondToTime =  (second, sep, pure) => {
  sep = sep || ':';

  if(pure){
    return second;
  }else{
    if(sep === ':'){
      return [
        parseInt((second / 60 / 60).toString()),
        parseInt((second / 60).toString()) % 60, second % 60
      ].join(sep)
        .replace(/\b(\d)\b/g, "0$1");
    }else{
      return splitSecondToTime(second,sep);
    }
  }
}

export interface countDownOption extends BaseLifeCycle{
  sep? // 分隔符
  pure?// 是否纯输出秒数
}

// == 倒计时
export const countDown = (second, option:countDownOption = {}) => {
  const { sep, pure, created, updated, destroyed } = option;
  let timer;
  let time = secondToTime(second, sep, pure);
  if(created) created(time);

  setTimeout(() => {
    count();
  },1000);

  function count() {
    time = secondToTime(--second, sep, pure);
    if(updated) updated(time);
    if(second > 0){
      timer = setTimeout(() => {
        count();
      },1000);
    }else{
      finish();
    }
  }

  function finish() {
    if(timer) clearTimeout(timer);
    timer = null;
    if(destroyed) destroyed();
  }

  return {
    // 结束
    finish,
    // 暂停
    pause: () => {
      if(timer) clearTimeout(timer);
    },
    // 恢复
    resume: () => {
      if(timer) count();
    }
  }
}