SNH购票…

snh48buyticket.js

(function () {
  if (location.host !== 'shop.48.cn') {
    console.error('kidding me?');
    return ;
  }

  if (typeof jQuery !== 'function') {
    console.error('缺少基础库');
    return ;
  }

  if (typeof Promise !== 'function') {
    console.error('请升级浏览器');
    return ;
  }

  var seat = {
    'vip坐票': '2',
    '普通坐票': '3',
    '普通站票': '4'
  };

  function buy(ticketId, ticketsCount, seatType) {
    ticketId = ticketId || /\/(\d+)$/.exec(location.href)[1];
    ticketsCount = ticketsCount || 1;
    seatType = seatType || '普通坐票';

    return new Promise(function (resolve, reject) {
      $.ajax({
        url: '/TOrder/add',
        type: 'post',
        dataType: 'json',
        data: {
          id: ticketId,
          num: ticketsCount,
          seattype: seat[seatType] || '3',
          brand_id: '1',
          r: Math.random()
        },
        error: reject,
        success: function (result) {
          if (result.HasError) {
            reject(result.Message);
          }
          else {
            resolve(result.ReturnObject);
          }
        }
      });
    });
  }

  function delay(tick) {
    return new Promise(function (resolve, reject) {
      setTimeout(resolve, tick);
    });
  }


  // 循环刷票，直到下单成功
  // tick: 刷单间隔，单位ms
  var failedTimes = 0;
  var freshControl = 1;
  function fresh(tick) {
    buy('106', 1, '普通坐票')
      .then(function (orderId) {
        if (orderId) window.location.href = orderId;  // 跳到下单页面
      }, function (failedReason) {
        failedTimes++;
        console.info('刷单失败' + failedTimes + '次，原因：' + failedReason);
        if (failedReason.indexOf('请不要反复点击') >= 0) {
          // 刷新间隔过大，停止循环
          var newTick = tick + 1000 * freshControl;
          freshControl += 1;
          console.log('系统检测到下单频率过快，延迟调整至：' + newTick);
          delay(newTick).then(fresh.bind(this, tick));
        } else {
          freshControl = 1;
          delay(tick).then(fresh.bind(this, tick));
        }
      });
  }

  fresh(3000);
})();