slack channel rename bot

index.gs

var parseParams = function (qs) {
  return qs.split(/&/).reduce((base, cur) => {
    const kv = cur.split(/=/);
    base[decodeURIComponent(kv.shift())] = decodeURIComponent(kv.join('='));
    return base;
  }, {});
}

function doPost(e) {
  var prop = PropertiesService.getScriptProperties().getProperties();
  var SlackApp = SlackClient.create(prop.SLACK_OAUTH_ACCESS_TOKEN);

  var conversationsLeave = function (channel) {
    return SlackApp.fetch_(Utilities.formatString('%s/conversations.leave', SlackApp.apiUrl), { method: 'post', payload: {
        channel: channel
      }
    });
  }

  var conversationsRename = function (channel, name) {
    return SlackApp.fetch_(Utilities.formatString('%s/conversations.rename', SlackApp.apiUrl), { method: 'post', payload: {
        channel: channel,
        name:    name
      }
    });
  }

  var responseMessage = function (url, message, type) {
    return SlackApp.fetch_(url, { method: 'post', payload: {
        "text": message,
        "response_type": type || "in_channel"
      }
    });
  }
  
  var postData = e.postData.getDataAsString();
  var req = parseParams(postData);

  if (req.token !== prop.SLACK_VERIFICATION_TOKEN) {
    throw new Error("Invalid token");
  }
  delete req.token;

  if (!req.channel_id) {
    throw new Error("channel_id not found");
  }
  if (!req.response_url) {
    throw new Error("response_url not found");
  }

  if (!req.text) {
    responseMessage(req.response_url, "新しいチャンネル名が指定されてません。 `/rename-channel <変更したいチャンネル名>` といった形で指定してください:pray:", "ephemeral");
    return;
  }

  conversationsRename(req.channel_id, req.text);

  // conversationsLeave(req.channel_id);

  responseMessage(req.response_url, "変わったかな？", "ephemeral");
  return ContentService.createTextOutput("");
}