Google Trends integration guide

import googleTrends from "google-trends-api";

async function main() {
  const apiKey = process.env.TRENDSAGI_API_KEY;
  if (!apiKey) throw new Error("Set TRENDSAGI_API_KEY first");

  const apiBaseUrl = process.env.API_BASE_URL ?? "https://api.trendsagi.com";
  const url = new URL("/api/trends", apiBaseUrl);
  url.search = new URLSearchParams({
    search: "AI chips",
    sort_by: "velocity",
    period: "24h",
    limit: "5",
  }).toString();

  const response = await fetch(url, {
    headers: { Authorization: `Bearer ${apiKey}` },
  });
  if (!response.ok) throw new Error(`Request failed: ${response.status}`);

  const signals = await response.json();

  for (const signal of signals.trends ?? []) {
    const response = await googleTrends.interestOverTime({
      keyword: signal.name,
      geo: "US",
      startTime: new Date(Date.now() - 7 * 24 * 60 * 60 * 1000),
    });
    const parsed = JSON.parse(response);
    const timeline = parsed.default?.timelineData ?? [];
    const latestInterest = timeline.length
      ? Number(timeline[timeline.length - 1]?.value?.[0] ?? 0)
      : 0;
    console.log(signal.name, signal.average_velocity, latestInterest);
  }
}

main().catch(console.error);