在 Google Chat 中安排会议

编码级别:中级
时长:25 分钟
项目类型:Google Chat 应用

目标

  • 了解该解决方案的用途。
  • 了解 Apps Script 服务在解决方案中的作用。
  • 设置环境。
  • 设置脚本。
  • 运行脚本。

关于此解决方案

在 Google Chat 的私信 (DM) 或聊天室中,在 Google 日历中安排会议。您可以为会议设置具体详细信息,例如主题、开始时间或时长,也可以使用默认设置来安排即时会议。

Meeting Scheduler Chat 应用的对话框界面

工作原理

Chat 应用脚本使用正斜线命令对话框从用户获取会议详细信息并安排日历活动。该脚本包含默认的会议设置,您可以根据需要对其进行自定义。

Apps Script 服务

此解决方案使用以下服务:

  • 日历服务 - 根据提供的会议信息创建日历活动。
  • 基本服务 - 使用 Session 类获取脚本的时区。Google 日历在安排活动时会使用此时区。
  • 实用程序服务 - 设置日历活动的日期格式并编码活动 ID,以便获取活动网址。

前提条件

设置环境

在 Google Cloud 控制台中打开您的 Cloud 项目

如果尚未打开,请打开您打算用于此示例的 Cloud 项目:

  1. 在 Google Cloud 控制台中,前往选择项目页面。

    选择 Cloud 项目

  2. 选择您要使用的 Google Cloud 项目。或者,点击创建项目,然后按照屏幕上的说明操作。如果您创建 Google Cloud 项目,则可能需要为项目启用结算功能

启用 API

在使用 Google API 之前,您需要先在 Google Cloud 项目中启用它们。您可以在单个 Google Cloud 项目中启用一个或多个 API。
  • 在您的 Cloud 项目中,开启 Google Chat API。

    启用 API

所有 Chat 应用都需要配置意见征求界面。配置应用的 OAuth 权限请求页面可定义 Google 向用户显示的内容,并注册应用以便您日后发布。

  1. 在 Google Cloud 控制台中,依次点击“菜单”图标 > API 和服务 > OAuth 权限请求页面

    转到 OAuth 同意屏幕

  2. 用户类型字段中,选择内部,然后点击创建
  3. 填写应用注册表单,然后点击保存并继续
  4. 现在,您可以跳过添加镜重,然后点击保存并继续。 今后,如果您创建的应用要在 Google Workspace 组织之外使用,则必须将用户类型更改为外部,然后添加应用所需的授权范围。

  5. 查看应用注册摘要。如需进行更改,请点击修改。如果应用注册未出现任何问题,请点击返回信息中心

设置脚本

创建 Apps 脚本项目

  1. 点击以下按钮以打开通过 Google Chat 安排会议 Apps 脚本项目。
    打开项目
  2. 点击概览
  3. 在概览页面上,点击“复制”图标 用于创建副本的图标

复制 Cloud 项目编号

  1. 在 Google Cloud 控制台中,依次选择“菜单”图标 > IAM 和管理 > 设置

    前往“IAM 和管理”设置

  2. 项目编号字段中,复制相应值。

设置 Apps 脚本项目的 Cloud 项目

  1. 在复制的 Apps 脚本项目中,点击项目设置 项目设置的图标
  2. Google Cloud Platform (GCP) Project(Google Cloud Platform [GCP] 项目)下,点击 Change project(更改项目)。
  3. GCP project number(GCP 项目编号)中,粘贴 Google Cloud 项目编号。
  4. 点击设置项目

创建测试部署

  1. 在复制的 Apps 脚本项目中,依次点击部署 > 测试部署
  2. 复制主部署 ID,以便在后续步骤中使用,然后点击完成

配置 Chat API

  1. 在 Google Cloud 控制台中,前往 Chat API 页面。
    前往 Chat API
  2. 点击配置
  3. 使用以下信息配置 Chat API:
    • 名称Meeting Scheduler
    • 头像网址:添加指向至少 256 x 256 像素的图片的网址。
    • 说明Quickly create meetings.
    • 功能:选中这两个复选框可让用户直接向应用发送消息并将其添加到聊天室。
    • 连接设置:点击 Apps 脚本,然后输入主部署 ID。
    • 斜杠命令:按照以下步骤为 /help/schedule_Meeting 添加斜杠命令:
      1. 点击添加斜杠命令,然后使用以下信息对其进行配置:
        • 名称/help
        • 命令 ID1
        • 说明Learn what this app does.
      2. 再次点击添加斜杠命令,然后使用以下信息对其进行配置:
        • 名称/schedule_Meeting
        • 命令 ID2
        • 说明Schedule a meeting.
        • 勾选打开对话框复选框。
    • 权限:选择您网域中的特定人员和群组,然后输入您的电子邮件地址。
  4. 点击保存并刷新页面。
  5. 在配置页面上的应用状态下,将状态设置为已上线 - 可供用户使用
  6. 点击保存

运行脚本

  1. 打开 Google Chat
  2. 点击“开始聊天”图标
  3. 搜索应用名称 Meeting Scheduler
  4. 发送初始消息(例如 hello),以提示授权。
  5. 当应用回复时,点击配置并授权应用。如果 OAuth 权限请求页面显示此应用未经验证警告,请继续选择高级 > 前往 {Project Name}(不安全)

  6. 向应用发送 /schedule_Meeting

  7. 在对话框中,添加至少一位邀请对象的电子邮件地址。您可以更新其他字段,也可以使用默认条目。

  8. 点击提交

  9. 如需查看会议,请点击打开日历活动

查看代码

如需查看此解决方案的 Apps Script 代码,请点击下方的查看源代码

查看源代码

Code.gs

solutions/schedule-meetings/Code.js
// To learn how to use this script, refer to the documentation:
// https://developers.google.com/apps-script/samples/chat-apps/schedule-meetings

/*
Copyright 2022 Google LLC

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    https://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

// Application constants
const APPNAME = 'Chat Meeting Scheduler';
const SLASHCOMMAND = {
  HELP: 1, // /help
  DIALOG: 2, // /schedule_Meeting
};

/**
 * Responds to an ADDED_TO_SPACE event in Google Chat.
 * Called when the Chat app is added to a space. The Chat app can either be directly added to the space
 * or added by a @mention. If the Chat app is added by a @mention, the event object includes a message property. 
 * Returns a Message object, which is usually a welcome message informing users about the Chat app.
 *
 * @param {Object} event The event object from Google Chat
 */
function onAddToSpace(event) {
  let message = '';

  // Personalizes the message depending on how the Chat app is called.
  if (event.space.singleUserBotDm) {
    message = `Hi ${event.user.displayName}!`;
  } else {
    const spaceName = event.space.displayName ? event.space.displayName : "this chat";
    message = `Hi! Thank you for adding me to ${spaceName}`;
  }

  // Lets users know what they can do and how they can get help.
  message = message + '/nI can quickly schedule a meeting for you with just a few clicks.' +
    'Try me out by typing */schedule_Meeting*. ' +
    '/nTo learn what else I can do, type */help*.'

  return { "text": message };
}

/**
 * Responds to a MESSAGE event triggered in Chat.
 * Called when the Chat app is already in the space and the user invokes it via @mention or / command.
 * Returns a message object containing the Chat app's response. For this Chat app, the response is either the
 * help text or the dialog to schedule a meeting.
 * 
 * @param {object} event The event object from Google Chat
 * @return {object} JSON-formatted response as text or Card message
 */
function onMessage(event) {

  // Handles regular onMessage logic.
  // Evaluates if and handles for all slash commands.
  if (event.message.slashCommand) {
    switch (event.message.slashCommand.commandId) {

      case SLASHCOMMAND.DIALOG: // Displays meeting dialog for /schedule_Meeting.

        // TODO update this with your own logic to set meeting recipients, subjects, etc (e.g. a group email).
        return getInputFormAsDialog_({
          invitee: '',
          startTime: getTopOfHourDateString_(),
          duration: 30,
          subject: 'Status Stand-up',
          body: 'Scheduling a quick status stand-up meeting.'
        });

      case SLASHCOMMAND.HELP: // Responds with help text for /help.
        return getHelpTextResponse_();

      /* TODO Add other use cases here. E.g:
      case SLASHCOMMAND.NEW_FEATURE:  // Your Feature Here
        getDialogForAddContact(message);
      */

    }
  }
  else {
    // Returns text if users didn't invoke a slash command.
    return { text: 'No action taken - use Slash Commands.' }
  }
}

/**
 * Responds to a CARD_CLICKED event triggered in Chat.
 * @param {object} event the event object from Chat
 * @return {object} JSON-formatted response
 * @see https://developers.google.com/chat/api/guides/message-formats/events
 */
function onCardClick(event) {
  if (event.action.actionMethodName === 'handleFormSubmit') {
    const recipients = getFieldValue_(event.common.formInputs, 'email');
    const subject = getFieldValue_(event.common.formInputs, 'subject');
    const body = getFieldValue_(event.common.formInputs, 'body');

    // Assumes dialog card inputs for date and times are in the correct format. mm/dd/yyy HH:MM
    const dateTimeInput = getFieldValue_(event.common.formInputs, 'date');
    const startTime = getStartTimeAsDateObject_(dateTimeInput);
    const duration = Number(getFieldValue_(event.common.formInputs, 'duration'));

    // Handles instances of missing or invalid input parameters.
    const errors = [];

    if (!recipients) {
      errors.push('Missing or invalid recipient email address.');
    }
    if (!subject) {
      errors.push('Missing subject line.');
    }
    if (!body) {
      errors.push('Missing event description.');
    }
    if (!startTime) {
      errors.push('Missing or invalid start time.');
    }
    if (!duration || isNaN(duration)) {
      errors.push('Missing or invalid duration');
    }
    if (errors.length) {
      // Redisplays the form if missing or invalid inputs exist.
      return getInputFormAsDialog_({
        errors,
        invitee: recipients,
        startTime: dateTimeInput,
        duration,
        subject,
        body
      });
    }

    //  Calculates the end time via duration.
    const endTime = new Date(startTime.valueOf());
    endTime.setMinutes(endTime.getMinutes() + duration);

    // Creates calendar event with notification.
    const calendar = CalendarApp.getDefaultCalendar()
    const scheduledEvent = calendar.createEvent(subject,
      startTime,
      endTime,
      {
        guests: recipients,
        sendInvites: true,
        description: body + '\nThis meeting scheduled by a Google Chat App!'
      });

    // Gets a link to the Calendar event.
    const url = getCalendarEventURL_(scheduledEvent, calendar)

    return getConfirmationDialog_(url);

  } else if (event.action.actionMethodName === 'closeDialog') {

    // Returns this dialog as success.
    return {
      actionResponse: {
        type: 'DIALOG',
        dialog_action: {
          actionStatus: 'OK'
        }
      }
    }
  }
}

/**
 * Responds with help text about this Chat app.
 * @return {string} The help text as seen below
 */
function getHelpTextResponse_() {
  const help = `*${APPNAME}* lets you quickly create meetings from Google Chat. Here\'s a list of all its commands:
  \`/schedule_Meeting\`  Opens a dialog with editable, preset parameters to create a meeting event
  \`/help\`  Displays this help message

  Learn more about creating Google Chat apps at https://developers.google.com/chat.`

  return { 'text': help }
}

Dialog.gs

solutions/schedule-meetings/Dialog.js
/**
 * Copyright 2022 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
* Form input dialog as JSON.
* @return {object} JSON-formatted cards for the dialog.
*/
function getInputFormAsDialog_(options) {
  const form = getForm_(options);
  return {
    'actionResponse': {
      'type': 'DIALOG',
      'dialogAction': {
        'dialog': {
          'body': form
        }
      }
    }
  };
}

/**
* Form JSON to collect inputs regarding the meeting.
* @return {object} JSON-formatted cards.
*/
function getForm_(options) {
  const sections = [];

  // If errors present, display additional section with validation messages.
  if (options.errors && options.errors.length) {
    let errors = options.errors.reduce((str, err) => `${str}• ${err}<br>`, '');
    errors = `<b>Errors:</b><br><font color="#ba0000">${errors}</font>`;
    const errorSection = {
      'widgets': [
        {
          textParagraph: {
            text: errors
          }
        }
      ]
    }
    sections.push(errorSection);
  }
  let formSection = {
    'header': 'Schedule meeting and send email to invited participants',
    'widgets': [
      {
        'textInput': {
          'label': 'Event Title',
          'type': 'SINGLE_LINE',
          'name': 'subject',
          'value': options.subject
        }
      },
      {
        'textInput': {
          'label': 'Invitee Email Address',
          'type': 'SINGLE_LINE',
          'name': 'email',
          'value': options.invitee,
          'hintText': 'Add team group email'
        }
      },
      {
        'textInput': {
          'label': 'Description',
          'type': 'MULTIPLE_LINE',
          'name': 'body',
          'value': options.body
        }
      },
      {
        'textInput': {
          'label': 'Meeting start date & time',
          'type': 'SINGLE_LINE',
          'name': 'date',
          'value': options.startTime,
          'hintText': 'mm/dd/yyyy H:MM'
        }
      },
      {
        'selectionInput': {
          'type': 'DROPDOWN',
          'label': 'Meeting Duration',
          'name': 'duration',
          'items': [
            {
              'text': '15 minutes',
              'value': '15',
              'selected': options.duration === 15
            },
            {
              'text': '30 minutes',
              'value': '30',
              'selected': options.duration === 30
            },
            {
              'text': '45 minutes',
              'value': '45',
              'selected': options.duration === 45
            },
            {
              'text': '1 Hour',
              'value': '60',
              'selected': options.duration === 60
            },
            {
              'text': '1.5 Hours',
              'value': '90',
              'selected': options.duration === 90
            },
            {
              'text': '2 Hours',
              'value': '120',
              'selected': options.duration === 120
            }
          ]
        }
      }
    ],
    'collapsible': false
  };
  sections.push(formSection);
  const card =  {
    'sections': sections,
    'name': 'Google Chat Scheduled Meeting',
    'fixedFooter': {
      'primaryButton': {
        'text': 'Submit',
        'onClick': {
          'action': {
            'function': 'handleFormSubmit'
          }
        },
        'altText': 'Submit'
      }
    }
  };
  return card;
}

/**
* Confirmation dialog after a calendar event is created successfully.
* @param {string} url The Google Calendar Event url for link button
* @return {object} JSON-formatted cards for the dialog
*/
function getConfirmationDialog_(url) {
  return {
    'actionResponse': {
      'type': 'DIALOG',
      'dialogAction': {
        'dialog': {
          'body': {
            'sections': [
              {
                'widgets': [
                  {
                    'textParagraph': {
                      'text': 'Meeting created successfully!'
                    },
                    'horizontalAlignment': 'CENTER'
                  },
                  {
                    'buttonList': {
                      'buttons': [
                        {
                          'text': 'Open Calendar Event',
                          'onClick': {
                            'openLink': {
                              'url': url
                            }
                          }
                        }

                      ]
                    },
                    'horizontalAlignment': 'CENTER'
                  }
                ]
              }
            ],
            'fixedFooter': {
              'primaryButton': {
                'text': 'OK',
                'onClick': {
                  'action': {
                    'function': 'closeDialog'
                  }
                }
              }
            }
          }
        }
      }
    }
  }
}

Utilities.gs

solutions/schedule-meetings/Utilities.js
/**
 * Copyright 2022 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
* Helper function that gets the field value from the given form input.
* @return {string} 
*/
function getFieldValue_(formInputs, fieldName) {
  return formInputs[fieldName][''].stringInputs.value[0];
}

// Regular expression to validate the date/time input.
const DATE_TIME_PATTERN = /\d{1,2}\/\d{1,2}\/\d{4}\s+\d{1,2}:\d\d/;

/**
* Casts date and time from string to Date object.
* @return {date} 
*/
function getStartTimeAsDateObject_(dateTimeStr) {
  if (!dateTimeStr || !dateTimeStr.match(DATE_TIME_PATTERN)) {
    return null;
  }

  const parts = dateTimeStr.split(' ');
  const [month, day, year] = parts[0].split('/').map(Number);
  const [hour, minute] = parts[1].split(':').map(Number);


  Session.getScriptTimeZone()

  return new Date(year, month - 1, day, hour, minute)
}

/** 
* Gets the current date and time for the upcoming top of the hour (e.g. 01/25/2022 18:00).
* @return {string} date/time in mm/dd/yyy HH:MM format needed for use by Calendar
*/
function getTopOfHourDateString_() {
  const date = new Date();
  date.setHours(date.getHours() + 1);
  date.setMinutes(0, 0, 0);
  // Adding the date as string might lead to an incorrect response due to time zone adjustments.
  return Utilities.formatDate(date, Session.getScriptTimeZone(), 'MM/dd/yyyy H:mm');
}


/** 
* Creates the URL for the Google Calendar event.
*
* @param {object} event The Google Calendar Event instance
* @param {object} cal The associated Google Calendar 
* @return {string} URL in the form of 'https://www.google.com/calendar/event?eid={event-id}'
*/
function getCalendarEventURL_(event, cal) {
  const baseCalUrl = 'https://www.google.com/calendar';
  // Joins Calendar Event Id with Calendar Id, then base64 encode to derive the event URL.
  let encodedId = Utilities.base64Encode(event.getId().split('@')[0] + " " + cal.getId()).replace(/\=/g, '');
  encodedId = `/event?eid=${encodedId}`;
  return (baseCalUrl + encodedId);

}

后续步骤