const token = PropertiesService.getScriptProperties()
  .getProperty('SLACK_ACCESS_TOKEN');
const channel = PropertiesService.getScriptProperties()
  .getProperty('SLACK_CHANNEL');

const json = JSON.parse(
  e.postData.getDataAsString()
);
const event = json.event;

// 指定の顔文字リアクションでなければ無視
if (event.reaction !== 'lgtm') return;
Logger.log(event.reaction);

const slackParams = JSON.parse(
  e.postData.getDataAsString()
).event;
const messageTs = slackParams.item.ts;
const messageTsDate  = new Date(messageTs * 1000);

const baseUrl = 'https://slack.com/api/conversations.history';
const baseParams = [
  'token=' + token,
  'channel=' + channel,
  'oldest=' + messageTs,
  'latest=' + messageTs,
  'inclusive=' + true
];

const latestMessage = '';
const params = baseParams.concat([latestMessage]).join('&');
const encodeType =　'application/x-www-form-urlencoded';
const res = postMessageToSlack(baseUrl + '?' + params, encodeType);

function postMessageToSlack(url, encodeType) {
  const res = UrlFetchApp.fetch(url, {
    method: 'GET',
    headers: {
      'Content-Type': encodeType
    }
  });
  return JSON.parse(res);
}

const today = new Date();
const sheetName = Utilities.formatDate(
  today,
  'Asia/Tokyo',
  'yyyyMM'
);

const sheet = SpreadsheetApp
  .getActive()
  .getSheetByName(sheetName);

// 存在していない場合新たに作る
if(!sheet) SpreadsheetApp.create(sheetName);

export interface TipForm {
  title: string
  url: string
  description: string
  tags: number[]
  event: number
  time: Date
}

addDataToFirestore({
  time: messageTsDate,
  title: messageText,
  url: matches[0]
});

function addDataToFirestore({ time, title, url }) {
  const certification = initFirestore();

  const firestore = FirestoreApp.getFirestore(
    certification.email,
    certification.key,
    certification.projectId
  );

  try {
    firestore.updateDocument('tips/' + getUuid(), {
      time: time,
      title: title,
      url: url,
      description: '',
      event: 0,
      tags: []
    });
  } catch (e) {
    Logger.log(e);
  }
}