AI-powered summaries (simplified)

This sample demonstrates the use of AI-powered summaries in a simplified format; instead of an interactive UI, it shows the summary in an info window. To view summaries for different places, swap out the Place ID.

Read the documentation.

TypeScript

const mapElement = document.querySelector('gmp-map')!;
let innerMap: google.maps.Map;
let infoWindow: google.maps.InfoWindow;

async function init() {
    const { InfoWindow } = await google.maps.importLibrary('maps');

    innerMap = mapElement.innerMap;
    innerMap.setOptions({
        mapTypeControl: false,
    });

    infoWindow = new InfoWindow();
    void getPlaceDetails();
}

async function getPlaceDetails() {
    // Request needed libraries.
    const [{ AdvancedMarkerElement }, { Place }] = await Promise.all([
        google.maps.importLibrary('marker'),
        google.maps.importLibrary('places'),
    ]);

    // Use place ID to create a new Place instance.
    const place = new Place({
        id: 'ChIJzzc-aWUM3IARPOQr9sA6vfY', // San Diego Botanic Garden
    });

    // Call fetchFields, passing the needed data fields.
    await place.fetchFields({
        fields: [
            'displayName',
            'formattedAddress',
            'location',
            'generativeSummary',
        ],
    });

    // Add an Advanced Marker
    const marker = new AdvancedMarkerElement({
        map: innerMap,
        position: place.location,
        title: place.displayName,
    });

    // Create a content container.
    const content = document.createElement('div');
    // Populate the container with data.
    const address = document.createElement('div');
    const summary = document.createElement('div');
    const lineBreak = document.createElement('br');
    const attribution = document.createElement('div');

    // Retrieve the textual data (summary, disclosure, flag URI).
    const overviewText = place.generativeSummary?.overview;
    const disclosureText = place.generativeSummary?.disclosureText;
    const reportingURI = place.generativeSummary?.flagContentURI;

    // Create HTML for reporting link.
    const reportingLink = document.createElement('a');
    reportingLink.href = reportingURI ?? '';
    reportingLink.target = '_blank';
    reportingLink.textContent = 'Report a problem.';

    // Add text to layout.
    address.textContent = place.formattedAddress ?? '';
    summary.textContent = overviewText ?? 'No summary is available.';
    attribution.textContent = overviewText ? `${disclosureText}  ` : '';
    if (overviewText) attribution.appendChild(reportingLink);

    content.append(address, lineBreak, summary, lineBreak, attribution);

    innerMap.setCenter(place.location!);

    // Handle marker click.
    marker.addEventListener('gmp-click', () => {
        showInfoWindow(marker, place, content);
    });

    // Display the info window at load time.
    showInfoWindow(marker, place, content);
}

function showInfoWindow(
    marker: google.maps.marker.AdvancedMarkerElement,
    place: google.maps.places.Place,
    content: HTMLElement
) {
    // Display an info window.
    infoWindow.setHeaderContent(place.displayName);
    infoWindow.setContent(content);
    infoWindow.open({
        anchor: marker,
    });
}

void init();

JavaScript

const mapElement = document.querySelector('gmp-map');
let innerMap;
let infoWindow;

async function init() {
    const { InfoWindow } = await google.maps.importLibrary('maps');

    innerMap = mapElement.innerMap;
    innerMap.setOptions({
        mapTypeControl: false,
    });

    infoWindow = new InfoWindow();
    void getPlaceDetails();
}

async function getPlaceDetails() {
    // Request needed libraries.
    const [{ AdvancedMarkerElement }, { Place }] = await Promise.all([
        google.maps.importLibrary('marker'),
        google.maps.importLibrary('places'),
    ]);

    // Use place ID to create a new Place instance.
    const place = new Place({
        id: 'ChIJzzc-aWUM3IARPOQr9sA6vfY', // San Diego Botanic Garden
    });

    // Call fetchFields, passing the needed data fields.
    await place.fetchFields({
        fields: [
            'displayName',
            'formattedAddress',
            'location',
            'generativeSummary',
        ],
    });

    // Add an Advanced Marker
    const marker = new AdvancedMarkerElement({
        map: innerMap,
        position: place.location,
        title: place.displayName,
    });

    // Create a content container.
    const content = document.createElement('div');
    // Populate the container with data.
    const address = document.createElement('div');
    const summary = document.createElement('div');
    const lineBreak = document.createElement('br');
    const attribution = document.createElement('div');

    // Retrieve the textual data (summary, disclosure, flag URI).
    const overviewText = place.generativeSummary?.overview;
    const disclosureText = place.generativeSummary?.disclosureText;
    const reportingURI = place.generativeSummary?.flagContentURI;

    // Create HTML for reporting link.
    const reportingLink = document.createElement('a');
    reportingLink.href = reportingURI ?? '';
    reportingLink.target = '_blank';
    reportingLink.textContent = 'Report a problem.';

    // Add text to layout.
    address.textContent = place.formattedAddress ?? '';
    summary.textContent = overviewText ?? 'No summary is available.';
    attribution.textContent = overviewText ? `${disclosureText}  ` : '';
    if (overviewText) attribution.appendChild(reportingLink);

    content.append(address, lineBreak, summary, lineBreak, attribution);

    innerMap.setCenter(place.location);

    // Handle marker click.
    marker.addEventListener('gmp-click', () => {
        showInfoWindow(marker, place, content);
    });

    // Display the info window at load time.
    showInfoWindow(marker, place, content);
}

function showInfoWindow(marker, place, content) {
    // Display an info window.
    infoWindow.setHeaderContent(place.displayName);
    infoWindow.setContent(content);
    infoWindow.open({
        anchor: marker,
    });
}

void init();

CSS

/* 
 * Always set the map height explicitly to define the size of the div element
 * that contains the map. 
 */
#map {
    height: 100%;
}

/* 
 * Optional: Makes the sample page fill the window. 
 */
html,
body {
    height: 100%;
    margin: 0;
    padding: 0;
}

HTML

<html>
    <head>
        <title>AI-powered Summaries Basic Sample</title>

        <link rel="stylesheet" type="text/css" href="./style.css" />
        <script type="module" src="./index.js"></script>
        <script>
            // prettier-ignore
            (g=>{var h,a,k,p="The Google Maps JavaScript API",c="google",l="importLibrary",q="__ib__",m=document,b=window;b=b[c]||(b[c]={});var d=b.maps||(b.maps={}),r=new Set,e=new URLSearchParams,u=()=>h||(h=new Promise(async(f,n)=>{await (a=m.createElement("script"));e.set("libraries",[...r]+"");for(k in g)e.set(k.replace(/[A-Z]/g,t=>"_"+t[0].toLowerCase()),g[k]);e.set("callback",c+".maps."+q);a.src=`https://maps.${c}apis.com/maps/api/js?`+e;d[q]=f;a.onerror=()=>h=n(Error(p+" could not load."));a.nonce=m.querySelector("script[nonce]")?.nonce||"";m.head.append(a)}));d[l]?console.warn(p+" only loads once. Ignoring:",g):d[l]=(f,...n)=>r.add(f)&&u().then(()=>d[l](f,...n))})({
                key: "GOOGLE_MAPS_API_KEY"
            });
        </script>
    </head>
    <body>
        <gmp-map
            center="32.7360353,-117.1509849"
            zoom="14"
            map-id="DEMO_MAP_ID">
        </gmp-map>
    </body>
</html>

Clone Sample

Git and Node.js are required to run this sample locally. Follow these instructions to install Node.js and NPM. You will also need a Google Maps API key.

The following commands clone the repository, install dependencies, and copy the environment file. 

  git clone https://github.com/googlemaps-samples/js-api-samples.git
  cd js-api-samples
  npm i
  cp .env.template .env

Once you copy the environment file, make sure to open the .env file and replace <Insert your own development API key here> with your actual API key before starting the sample. 

  cd samples/ai-powered-summaries-basic
  npm start