LineContext

• Reply API
  • Imagemap Message
  • Template Messages
  • Flex Messages
• Push API
  • Imagemap Message
  • Template Messages
  • Flex Messages
• Quick Replies
• Profile API
• Group/Room Member Profile API
• Group/Room Member IDs API
• Leave API
• Rich Menu API
• Account Link API

Reply API - Official Docs

Responds to events from users, groups, and rooms.

reply(messages)

Responds messages to the receiver using reply token.

Param	Type	Description
messages	Array<Object>	Array of objects which contains the contents of the message to be sent.

Example:

context.reply([
  {
    type: 'text',
    text: 'Hello!',
  },
]);

replyToken can only be used once, but you can send up to 5 messages using the same token.

const { Line } = require('messaging-api-line');

context.reply([
  Line.createText('Hello'),
  Line.createImage({
    originalContentUrl: 'https://example.com/original.jpg',
    previewImageUrl: 'https://example.com/preview.jpg',
  }),
  Line.createText('End'),
]);

replyText(text) - Official Docs

Responds text message to the receiver using reply token.

You can include LINE original emoji in text messages using character codes. For a list of LINE emoji that can be sent in LINE chats, see the emoji list.

Param	Type	Description
text	String	Text of the message to be sent.

Example:

context.replyText('Hello!');

replyImage(imageUrl, previewImageUrl) - Official Docs

Responds image message to the receiver using reply token.

Param	Type	Description
imageUrl	String	Image URL.
previewImageUrl	String	Preview image URL.

Example:

context.replyImage({
  originalContentUrl: 'https://example.com/original.jpg',
  previewImageUrl: 'https://example.com/preview.jpg',
});

replyVideo(videoUrl, previewImageUrl) - Official Docs

Responds video message to the receiver using reply token.

Param	Type	Description
videoUrl	String	URL of video file.
previewImageUrl	String	URL of preview image.

Example:

context.replyVideo({
  originalContentUrl: 'https://example.com/original.mp4',
  previewImageUrl: 'https://example.com/preview.jpg',
});

replyAudio(audioUrl, duration) - Official Docs

Responds audio message to the receiver using reply token.

Param	Type	Description
audioUrl	String	URL of audio file.
duration	Number	Length of audio file.

Example:

context.replyAudio({
  originalContentUrl: 'https://example.com/original.m4a',
  duration: 240000,
});

replyLocation(location) - Official Docs

Responds location message to the receiver using reply token.

Param	Type	Description
location	Object	Object contains location's parameters.
location.title	String	Title of the location.
location.address	String	Address of the location.
location.latitude	Number	Latitude of the location.
location.longitude	Number	Longitude of the location.

Example:

context.replyLocation({
  title: 'my location',
  address: '〒150-0002 東京都渋谷区渋谷２丁目２１−１',
  latitude: 35.65910807942215,
  longitude: 139.70372892916203,
});

replySticker(packageId, stickerId) - Official Docs

Responds sticker message to the receiver using reply token. For a list of stickers that can be sent with the Messaging API, see the sticker list.

Param	Type	Description
packageId	String	Package ID.
stickerId	String	Sticker ID.

Example:

context.replySticker({ packageId: '1', stickerId: '1' });

Reply Imagemap Message

replyImagemap(altText, imagemap) - Official Docs

Responds imagemap message to the receiver using reply token.

Param	Type	Description
altText	String	Alternative text.
imagemap	Object	Object contains imagemap's parameters.
imagemap.baseUrl	String	Base URL of image.
imagemap.baseSize	Object	Base size object.
imagemap.baseSize.width	Number	Width of base image.
imagemap.baseSize.height	Number	Height of base image.
imagemap.actions	Array<Object>	Action when tapped.

Example:

context.replyImagemap('this is an imagemap', {
  baseUrl: 'https://example.com/bot/images/rm001',
  baseSize: {
    width: 1040,
    height: 1040,
  },
  actions: [
    {
      type: 'uri',
      linkUri: 'https://example.com/',
      area: {
        x: 0,
        y: 0,
        width: 520,
        height: 1040,
      },
    },
    {
      type: 'message',
      text: 'hello',
      area: {
        x: 520,
        y: 0,
        width: 520,
        height: 1040,
      },
    },
  ],
});

Reply Template Messages

replyTemplate(altText, template) - Official Docs

Responds template message to the receiver using reply token.

Param	Type	Description
altText	String	Alternative text.
template	Object	Object with the contents of the template.

Example:

context.replyTemplate('this is a template', {
  type: 'buttons',
  thumbnailImageUrl: 'https://example.com/bot/images/image.jpg',
  title: 'Menu',
  text: 'Please select',
  actions: [
    {
      type: 'postback',
      label: 'Buy',
      data: 'action=buy&itemid=123',
    },
    {
      type: 'postback',
      label: 'Add to cart',
      data: 'action=add&itemid=123',
    },
    {
      type: 'uri',
      label: 'View detail',
      uri: 'http://example.com/page/123',
    },
  ],
});

replyButtonTemplate(altText, buttonTemplate) - Official Docs

Alias: replyButtonsTemplate.

Responds button template message to the receiver using reply token.

Param	Type	Description
altText	String	Alternative text.
buttonTemplate	Object	Object contains buttonTemplate's parameters.
buttonTemplate.thumbnailImageUrl	String	Image URL of buttonTemplate.
buttonTemplate.imageAspectRatio	String	Aspect ratio of the image. Specify one of the following values: rectangle, square
buttonTemplate.imageSize	String	Size of the image. Specify one of the following values: cover, contain
buttonTemplate.imageBackgroundColor	String	Background color of image. Specify a RGB color value. The default value is #FFFFFF (white).
buttonTemplate.title	String	Title of buttonTemplate.
buttonTemplate.text	String	Message text of buttonTemplate.
buttonTemplate.defaultAction	Object	Action when image is tapped; set for the entire image, title, and text area.
buttonTemplate.actions	Array<Object>	Action when tapped.

Example:

context.replyButtonTemplate('this is a template', {
  thumbnailImageUrl: 'https://example.com/bot/images/image.jpg',
  title: 'Menu',
  text: 'Please select',
  actions: [
    {
      type: 'postback',
      label: 'Buy',
      data: 'action=buy&itemid=123',
    },
    {
      type: 'postback',
      label: 'Add to cart',
      data: 'action=add&itemid=123',
    },
    {
      type: 'uri',
      label: 'View detail',
      uri: 'http://example.com/page/123',
    },
  ],
});

replyConfirmTemplate(altText, confirmTemplate) - Official Docs

Responds confirm template message to the receiver using reply token.

Param	Type	Description
altText	String	Alternative text.
confirmTemplate	Object	Object contains confirmTemplate's parameters.
confirmTemplate.text	String	Message text of confirmTemplate.
confirmTemplate.actions	Array<Object>	Action when tapped.

Example:

context.replyConfirmTemplate('this is a confirm template', {
  text: 'Are you sure?',
  actions: [
    {
      type: 'message',
      label: 'Yes',
      text: 'yes',
    },
    {
      type: 'message',
      label: 'No',
      text: 'no',
    },
  ],
});

replyCarouselTemplate(altText, carouselItems, options) - Official Docs

Responds carousel template message to the receiver using reply token.

Param	Type	Description
altText	String	Alternative text.
carouselItems	Array<Object>	Array of columns which contains object for carousel.
options	Object	Object contains options.
options.imageAspectRatio	String	Aspect ratio of the image. Specify one of the following values: rectangle, square
options.imageSize	String	Size of the image. Specify one of the following values: cover, contain

Example:

context.replyCarouselTemplate('this is a carousel template', [
  {
    thumbnailImageUrl: 'https://example.com/bot/images/item1.jpg',
    title: 'this is menu',
    text: 'description',
    actions: [
      {
        type: 'postback',
        label: 'Buy',
        data: 'action=buy&itemid=111',
      },
      {
        type: 'postback',
        label: 'Add to cart',
        data: 'action=add&itemid=111',
      },
      {
        type: 'uri',
        label: 'View detail',
        uri: 'http://example.com/page/111',
      },
    ],
  },
  {
    thumbnailImageUrl: 'https://example.com/bot/images/item2.jpg',
    title: 'this is menu',
    text: 'description',
    actions: [
      {
        type: 'postback',
        label: 'Buy',
        data: 'action=buy&itemid=222',
      },
      {
        type: 'postback',
        label: 'Add to cart',
        data: 'action=add&itemid=222',
      },
      {
        type: 'uri',
        label: 'View detail',
        uri: 'http://example.com/page/222',
      },
    ],
  },
]);

replyImageCarouselTemplate(altText, carouselItems) - Official Docs

Responds image carousel template message to the receiver using reply token.

Param	Type	Description
altText	String	Alternative text.
carouselItems	Array<Object>	Array of columns which contains object for image carousel.

Example:

context.replyImageCarouselTemplate('this is an image carousel template', [
  {
    imageUrl: 'https://example.com/bot/images/item1.jpg',
    action: {
      type: 'postback',
      label: 'Buy',
      data: 'action=buy&itemid=111',
    },
  },
  {
    imageUrl: 'https://example.com/bot/images/item2.jpg',
    action: {
      type: 'message',
      label: 'Yes',
      text: 'yes',
    },
  },
  {
    imageUrl: 'https://example.com/bot/images/item3.jpg',
    action: {
      type: 'uri',
      label: 'View detail',
      uri: 'http://example.com/page/222',
    },
  },
]);

Reply Flex Messages

replyFlex(altText, contents) - Official Docs

Responds flex message using specified reply token.

Param	Type	Description
altText	String	Alternative text.
contents	Object	Flex Message container object.

Example:

context.replyFlex('this is a flex', {
  type: 'bubble',
  header: {
    type: 'box',
    layout: 'vertical',
    contents: [
      {
        type: 'text',
        text: 'Header text',
      },
    ],
  },
  hero: {
    type: 'image',
    url: 'https://example.com/flex/images/image.jpg',
  },
  body: {
    type: 'box',
    layout: 'vertical',
    contents: [
      {
        type: 'text',
        text: 'Body text',
      },
    ],
  },
  footer: {
    type: 'box',
    layout: 'vertical',
    contents: [
      {
        type: 'text',
        text: 'Footer text',
      },
    ],
  },
  styles: {
    comment: 'See the example of a bubble style object',
  },
});

Push API - Official Docs

Sends messages to the user, group, or room at any time.

push(messages)

Sends messages to the receiver using ID.

Param	Type	Description
messages	Array<Object>	Array of objects which contains the contents of the message to be sent.

Example:

context.push([
  {
    type: 'text',
    text: 'Hello!',
  },
]);

pushText(text) - Official Docs

Alias: sendText.

Sends text message to the receiver using ID.

You can include LINE original emoji in text messages using character codes. For a list of LINE emoji that can be sent in LINE chats, see the emoji list.

Param	Type	Description
text	String	Text of the message to be sent.

Example:

context.pushText('Hello!');

pushImage(imageUrl, previewImageUrl) - Official Docs

Alias: sendImage.

Sends image message to the receiver using ID.

Param	Type	Description
imageUrl	String	Image URL.
previewImageUrl	String	Preview image URL.

Example:

context.pushImage({
  originalContentUrl: 'https://example.com/original.jpg',
  previewImageUrl: 'https://example.com/preview.jpg',
});

pushVideo(videoUrl, previewImageUrl) - Official Docs

Alias: sendVideo.

Sends video message to the receiver using ID.

Param	Type	Description
videoUrl	String	URL of video file.
previewImageUrl	String	URL of preview image.

Example:

context.pushVideo({
  originalContentUrl: 'https://example.com/original.mp4',
  previewImageUrl: 'https://example.com/preview.jpg',
});

pushAudio(audioUrl, duration) - Official Docs

Alias: sendAudio.

Sends audio message to the receiver using ID.

Param	Type	Description
audioUrl	String	URL of audio file.
duration	Number	Length of audio file.

Example:

context.pushAudio({
  originalContentUrl: 'https://example.com/original.m4a',
  duration: 240000,
});

pushLocation(location) - Official Docs

Alias: sendLocation.

Sends location message to the receiver using ID.

Param	Type	Description
location	Object	Object contains location's parameters.
location.title	String	Title of the location.
location.address	String	Address of the location.
location.latitude	Number	Latitude of the location.
location.longitude	Number	Longitude of the location.

Example:

context.pushLocation({
  title: 'my location',
  address: '〒150-0002 東京都渋谷区渋谷２丁目２１−１',
  latitude: 35.65910807942215,
  longitude: 139.70372892916203,
});

pushSticker(packageId, stickerId) - Official Docs

Alias: sendSticker.

Sends sticker message to the receiver using ID. For a list of stickers that can be sent with the Messaging API, see the sticker list.

Param	Type	Description
packageId	String	Package ID.
stickerId	String	Sticker ID.

Example:

context.pushSticker({ packageId: '1', stickerId: '1' });

Push Imagemap Message

pushImagemap(altText, imagemap) - Official Docs

Alias: sendImagemap.

Sends imagemap message to the receiver using ID.

Param	Type	Description
altText	String	Alternative text.
imagemap	Object	Object contains imagemap's parameters.
imagemap.baseUrl	String	Base URL of image.
imagemap.baseSize	Object	Base size object.
imagemap.baseSize.width	Number	Width of base image.
imagemap.baseSize.height	Number	Height of base image.
imagemap.actions	Array<Object>	Action when tapped.

Example:

context.pushImagemap('this is an imagemap', {
  baseUrl: 'https://example.com/bot/images/rm001',
  baseSize: {
    width: 1040,
    height: 1040,
  },
  actions: [
    {
      type: 'uri',
      linkUri: 'https://example.com/',
      area: {
        x: 0,
        y: 0,
        width: 520,
        height: 1040,
      },
    },
    {
      type: 'message',
      text: 'hello',
      area: {
        x: 520,
        y: 0,
        width: 520,
        height: 1040,
      },
    },
  ],
});

Push Template Messages

pushTemplate(altText, template) - Official Docs

Alias: sendTemplate.

Sends template message to the receiver using ID.

Param	Type	Description
altText	String	Alternative text.
template	Object	Object with the contents of the template.

Example:

context.pushTemplate('this is a template', {
  type: 'buttons',
  thumbnailImageUrl: 'https://example.com/bot/images/image.jpg',
  title: 'Menu',
  text: 'Please select',
  actions: [
    {
      type: 'postback',
      label: 'Buy',
      data: 'action=buy&itemid=123',
    },
    {
      type: 'postback',
      label: 'Add to cart',
      data: 'action=add&itemid=123',
    },
    {
      type: 'uri',
      label: 'View detail',
      uri: 'http://example.com/page/123',
    },
  ],
});

pushButtonTemplate(altText, buttonTemplate) - Official Docs

Alias: pushButtonsTemplate, sendButtonTemplate, sendButtonsTemplate.

Sends button template message to the receiver using ID.

Param	Type	Description
altText	String	Alternative text.
buttonTemplate	Object	Object contains buttonTemplate's parameters.
buttonTemplate.thumbnailImageUrl	String	Image URL of buttonTemplate.
buttonTemplate.imageAspectRatio	String	Aspect ratio of the image. Specify one of the following values: rectangle, square
buttonTemplate.imageSize	String	Size of the image. Specify one of the following values: cover, contain
buttonTemplate.imageBackgroundColor	String	Background color of image. Specify a RGB color value. The default value is #FFFFFF (white).
buttonTemplate.title	String	Title of buttonTemplate.
buttonTemplate.text	String	Message text of buttonTemplate.
buttonTemplate.defaultAction	Object	Action when image is tapped; set for the entire image, title, and text area.
buttonTemplate.actions	Array<Object>	Action when tapped.

Example:

context.pushButtonTemplate('this is a template', {
  thumbnailImageUrl: 'https://example.com/bot/images/image.jpg',
  title: 'Menu',
  text: 'Please select',
  actions: [
    {
      type: 'postback',
      label: 'Buy',
      data: 'action=buy&itemid=123',
    },
    {
      type: 'postback',
      label: 'Add to cart',
      data: 'action=add&itemid=123',
    },
    {
      type: 'uri',
      label: 'View detail',
      uri: 'http://example.com/page/123',
    },
  ],
});

pushConfirmTemplate(altText, confirmTemplate) - Official Docs

Alias: sendConfirmTemplate.

Sends confirm template message to the receiver using ID.

Param	Type	Description
altText	String	Alternative text.
confirmTemplate	Object	Object contains confirmTemplate's parameters.
confirmTemplate.text	String	Message text of confirmTemplate.
confirmTemplate.actions	Array<Object>	Action when tapped.

Example:

context.pushConfirmTemplate('this is a confirm template', {
  text: 'Are you sure?',
  actions: [
    {
      type: 'message',
      label: 'Yes',
      text: 'yes',
    },
    {
      type: 'message',
      label: 'No',
      text: 'no',
    },
  ],
});

pushCarouselTemplate(altText, carouselItems, options) - Official Docs

Alias: sendCarouselTemplate.

Sends carousel template message to the receiver using ID.

Param	Type	Description
altText	String	Alternative text.
carouselItems	Array<Object>	Array of columns which contains object for carousel.
options	Object	Object contains options.
options.imageAspectRatio	String	Aspect ratio of the image. Specify one of the following values: rectangle, square
options.imageSize	String	Size of the image. Specify one of the following values: cover, contain

Example:

context.pushCarouselTemplate('this is a carousel template', [
  {
    thumbnailImageUrl: 'https://example.com/bot/images/item1.jpg',
    title: 'this is menu',
    text: 'description',
    actions: [
      {
        type: 'postback',
        label: 'Buy',
        data: 'action=buy&itemid=111',
      },
      {
        type: 'postback',
        label: 'Add to cart',
        data: 'action=add&itemid=111',
      },
      {
        type: 'uri',
        label: 'View detail',
        uri: 'http://example.com/page/111',
      },
    ],
  },
  {
    thumbnailImageUrl: 'https://example.com/bot/images/item2.jpg',
    title: 'this is menu',
    text: 'description',
    actions: [
      {
        type: 'postback',
        label: 'Buy',
        data: 'action=buy&itemid=222',
      },
      {
        type: 'postback',
        label: 'Add to cart',
        data: 'action=add&itemid=222',
      },
      {
        type: 'uri',
        label: 'View detail',
        uri: 'http://example.com/page/222',
      },
    ],
  },
]);

pushImageCarouselTemplate(altText, carouselItems) - Official Docs

Alias: sendImageCarouselTemplate.

Sends image carousel template message to the receiver using ID.

Param	Type	Description
altText	String	Alternative text.
carouselItems	Array<Object>	Array of columns which contains object for image carousel.

Example:

context.pushImageCarouselTemplate('this is an image carousel template', [
  {
    imageUrl: 'https://example.com/bot/images/item1.jpg',
    action: {
      type: 'postback',
      label: 'Buy',
      data: 'action=buy&itemid=111',
    },
  },
  {
    imageUrl: 'https://example.com/bot/images/item2.jpg',
    action: {
      type: 'message',
      label: 'Yes',
      text: 'yes',
    },
  },
  {
    imageUrl: 'https://example.com/bot/images/item3.jpg',
    action: {
      type: 'uri',
      label: 'View detail',
      uri: 'http://example.com/page/222',
    },
  },
]);

Push Flex Messages

pushFlex(altText, contents) - Official Docs

Sends flex message using ID of the receiver.

Param	Type	Description
altText	String	Alternative text.
contents	Object	Flex Message container object.

Example:

context.pushFlex('this is a flex', {
  type: 'bubble',
  header: {
    type: 'box',
    layout: 'vertical',
    contents: [
      {
        type: 'text',
        text: 'Header text',
      },
    ],
  },
  hero: {
    type: 'image',
    url: 'https://example.com/flex/images/image.jpg',
  },
  body: {
    type: 'box',
    layout: 'vertical',
    contents: [
      {
        type: 'text',
        text: 'Body text',
      },
    ],
  },
  footer: {
    type: 'box',
    layout: 'vertical',
    contents: [
      {
        type: 'text',
        text: 'Footer text',
      },
    ],
  },
  styles: {
    comment: 'See the example of a bubble style object',
  },
});

Quick Replies - Official Docs

Sends message with buttons appear at the bottom of the chat screen.

context.replyText(
  'Select your favorite food category or send me your location!',
  {
    quickReply: {
      items: [
        {
          type: 'action',
          imageUrl: 'https://example.com/sushi.png',
          action: {
            type: 'message',
            label: 'Sushi',
            text: 'Sushi',
          },
        },
        {
          type: 'action',
          imageUrl: 'https://example.com/tempura.png',
          action: {
            type: 'message',
            label: 'Tempura',
            text: 'Tempura',
          },
        },
        {
          type: 'action',
          action: {
            type: 'location',
            label: 'Send location',
          },
        },
      ],
    },
  }
);

Profile API - Official Docs

getUserProfile()

Gets user profile information.

Example:

context.getUserProfile().then((profile) => {
  console.log(profile);
  // {
  //   displayName: 'LINE taro',
  //   userId: USER_ID,
  //   pictureUrl: 'http://obs.line-apps.com/...',
  //   statusMessage: 'Hello, LINE!',
  // }
});

Group/Room Member Profile API - Official Docs

getMemberProfile(userId)

Gets the user profile of a member of the group/room that the bot is in. This includes the user IDs of users who has not added the bot as a friend or has blocked the bot.

Param	Type	Description
userId	String	ID of the user.

Example:

context.getMemberProfile(USER_ID).then((member) => {
  console.log(member);
  // {
  //   "displayName":"LINE taro",
  //   "userId":"Uxxxxxxxxxxxxxx...",
  //   "pictureUrl":"http://obs.line-apps.com/..."
  // }
});

Group/Room Member IDs API - Official Docs

getMemberIds(start)

Gets the ID of the users of the members of the group/room that the bot is in. This includes the user IDs of users who have not added the bot as a friend or has blocked the bot. This feature is only available for LINE@ Approved accounts or official accounts.

Param	Type	Description
start	String	continuationToken.

Example:

context.getMemberIds(CURSOR).then((res) => {
  console.log(res);
  // {
  //   memberIds: [
  //     'Uxxxxxxxxxxxxxx...',
  //     'Uxxxxxxxxxxxxxx...',
  //     'Uxxxxxxxxxxxxxx...'
  //   ],
  //   next: 'jxEWCEEP...'
  // }
});

getAllMemberIds()

Recursively gets the ID of the users of the members of the group/room that the bot is in using cursors. This feature is only available for LINE@ Approved accounts or official accounts.

Example:

context.getAllMemberIds().then((ids) => {
  console.log(ids);
  // [
  //   'Uxxxxxxxxxxxxxx..1',
  //   'Uxxxxxxxxxxxxxx..2',
  //   'Uxxxxxxxxxxxxxx..3',
  //   'Uxxxxxxxxxxxxxx..4',
  //   'Uxxxxxxxxxxxxxx..5',
  //   'Uxxxxxxxxxxxxxx..6',
  // ]
});

Leave API - Official Docs

leave()

Leave from the group or room.

Example:

context.leave();

Rich Menu API - Official Docs

getLinkedRichMenu() - Official Docs

Gets the ID of the rich menu linked to the user.

Example:

context.getLinkedRichMenu().then((richMenu) => {
  console.log(richMenu);
  // {
  //   richMenuId: "{richMenuId}"
  // }
});

linkRichMenu(richMenuId) - Official Docs

Links a rich menu to the user.

Param	Type	Description
richMenuId	String	ID of an uploaded rich menu.

Example:

context.linkRichMenu(RICH_MENU_ID);

unlinkRichMenu() - Official Docs

Unlinks a rich menu from the user.

Example:

context.unlinkRichMenu();

Account Link API - Official Docs

issueLinkToken() - Official Docs

Issues a link token used for the account link feature.

Example:

context.issueLinkToken().then((result) => {
  console.log(result);
  // {
  //   linkToken: 'NMZTNuVrPTqlr2IF8Bnymkb7rXfYv5EY',
  // }
});