Issue Dynamic Link via Cloud Functions

sample.ts

import * as functions from 'firebase-functions'
import * as request from 'request-promise-native'

export namespace IssueDynamicLink {
  export interface Request {
    params: DynamicLinkParameters
  }

  export interface Response {
    url: string
  }
}

export interface DynamicLinkParameters {
  link: string
  iosInfo?: {
    iosBundleId?: BundleIdentifier
    iosFallbackLink?: string
    iosAppStoreId?: AppID
  }
  socialMetaTagInfo?: {
    socialTitle?: string
    socialDescription?: string
    socialImageLink?: string
  }
}


export const onCalledIssueDynamicLink = functions.https.onCall(async (data, context) => {
  try {
    return issueDynamicLink(data, context)
  } catch (error) {
    console.error(error)
    throw error
  }
})

const issueDynamicLink = async (data: IssueDynamicLink.Request, context: CallableContext) => {
  const json = {
    'dynamicLinkInfo': {
      'dynamicLinkDomain': 'example.page.link',
      'link': data.params.link,
      'iosInfo': data.params.iosInfo,
      'socialMetaTagInfo': data.params.socialMetaTagInfo
    },
    'suffix': {
      'option': 'SHORT'
    }
  }

  const options: request.Options = {
    uri: `https://firebasedynamiclinks.googleapis.com/v1/shortLinks?key=${API_KEY}`,
    method: 'POST',
    headers: {
      'content-type': 'application/json'
    },
    json: JSON.parse(JSON.stringify(json))
  }
  const response = await request(options)
  return { url: response.shortLink }
}