Google reviews API in Node.js: three ways, with working code

const PLACE_ID = "ChIJN1t_tDeuEmsRUsoyG83frY4";
const res = await fetch(`https://places.googleapis.com/v1/places/${PLACE_ID}`, {
  headers: {
    "X-Goog-Api-Key": process.env.GOOGLE_MAPS_API_KEY,
    "X-Goog-FieldMask": "displayName,rating,userRatingCount,reviews",
  },
});
if (!res.ok) throw new Error(`${res.status} ${await res.text()}`);
const place = await res.json();
console.log(place.displayName.text, place.rating, place.userRatingCount);
for (const r of place.reviews ?? []) console.log(r.rating, r.authorAttribution.displayName, r.text?.text ?? "");

npm install google-auth-library

import { OAuth2Client } from "google-auth-library";

const client = new OAuth2Client({
  clientId: process.env.GOOGLE_CLIENT_ID,
  clientSecret: process.env.GOOGLE_CLIENT_SECRET,
  redirectUri: "http://localhost:3000/oauth/callback",
});
// 1) send the owner here once; 2) on the callback, exchange `code` and store tokens.refresh_token
const url = client.generateAuthUrl({ access_type: "offline", prompt: "consent",
  scope: ["https://www.googleapis.com/auth/business.manage"] });
// const { tokens } = await client.getToken(code); client.setCredentials(tokens);

client.setCredentials({ refresh_token: process.env.GOOGLE_REFRESH_TOKEN });
const { token } = await client.getAccessToken();
const H = { Authorization: `Bearer ${token}` };
const get = async (u) => { const r = await fetch(u, { headers: H }); if (!r.ok) throw new Error(`${r.status} ${await r.text()}`); return r.json(); };

const { accounts } = await get("https://mybusinessaccountmanagement.googleapis.com/v1/accounts");
const account = accounts[0].name;                                   // "accounts/123"
const { locations } = await get(`https://mybusinessbusinessinformation.googleapis.com/v1/${account}/locations?readMask=name,title`);
const location = locations[0].name;                                 // "locations/456"

const STARS = { ONE: 1, TWO: 2, THREE: 3, FOUR: 4, FIVE: 5 };
async function* allReviews(account, location) {
  let pageToken;
  do {
    const u = new URL(`https://mybusiness.googleapis.com/v4/${account}/${location}/reviews`);
    u.searchParams.set("pageSize", "50");
    if (pageToken) u.searchParams.set("pageToken", pageToken);
    const data = await get(u);
    yield* data.reviews ?? [];
    pageToken = data.nextPageToken;
  } while (pageToken);
}
for await (const rev of allReviews(account, location))
  console.log(STARS[rev.starRating], rev.reviewer.displayName, rev.comment ?? "", !!rev.reviewReply);

await fetch(`https://mybusiness.googleapis.com/v4/${rev.name}/reply`, {
  method: "PUT", headers: { ...H, "Content-Type": "application/json" },
  body: JSON.stringify({ comment: "Thank you, Laura. We've passed your note to the kitchen team." }),
});
// the same PUT edits; DELETE …/reply removes the reply

const API = "https://api.prismareviews.com/v1";
const H = { Authorization: `Bearer ${process.env.PRISMA_API_KEY}` };

let cursor;
do {
  const u = new URL(`${API}/reviews`); u.searchParams.set("limit", "100"); if (cursor) u.searchParams.set("cursor", cursor);
  const { data, next_cursor } = await (await fetch(u, { headers: H })).json();
  for (const r of data) console.log(r.platform, r.rating, r.author, r.text, r.reply?.status);
  cursor = next_cursor;
} while (cursor);

await fetch(`${API}/reviews/${reviewId}/reply`, { method: "POST", headers: { ...H, "Content-Type": "application/json" },
  body: JSON.stringify({ text: "Thank you, Laura. We've passed your note to the kitchen team." }) });