97 lines
2.3 KiB
TypeScript
97 lines
2.3 KiB
TypeScript
import { CRYPTO_ASSETS } from "@/lib/assets";
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export interface CryptoRateResult {
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usdPrices: Record<string, number>;
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updatedAt: string;
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}
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const COINGECKO_BASE_URL = "https://api.coingecko.com/api/v3";
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function buildCoinGeckoHeaders(): HeadersInit {
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const headers: Record<string, string> = {
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accept: "application/json"
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};
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const proApiKey = process.env.COINGECKO_PRO_API_KEY?.trim();
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const demoApiKey = process.env.COINGECKO_DEMO_API_KEY?.trim();
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const genericApiKey = process.env.COINGECKO_API_KEY?.trim();
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const genericApiKeyType =
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process.env.COINGECKO_API_KEY_TYPE?.trim().toLowerCase() ?? "demo";
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if (proApiKey) {
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headers["x-cg-pro-api-key"] = proApiKey;
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return headers;
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}
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if (demoApiKey) {
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headers["x-cg-demo-api-key"] = demoApiKey;
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return headers;
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}
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if (genericApiKey) {
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if (genericApiKeyType === "pro") {
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headers["x-cg-pro-api-key"] = genericApiKey;
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} else {
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headers["x-cg-demo-api-key"] = genericApiKey;
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}
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}
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return headers;
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}
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export async function fetchCryptoData(): Promise<CryptoRateResult> {
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const ids = CRYPTO_ASSETS.map((asset) => asset.providerId).filter(
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(id): id is string => Boolean(id)
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);
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const url = `${COINGECKO_BASE_URL}/simple/price?ids=${encodeURIComponent(
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ids.join(",")
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)}&vs_currencies=usd&include_last_updated_at=true`;
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const response = await fetch(url, {
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next: { revalidate: 60 },
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headers: buildCoinGeckoHeaders()
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});
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if (!response.ok) {
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throw new Error(`Unable to load crypto rates (${response.status})`);
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}
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const payload = (await response.json()) as Record<
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string,
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{
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usd?: number;
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last_updated_at?: number;
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}
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>;
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const usdPrices: Record<string, number> = {};
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let mostRecentUpdate = 0;
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for (const asset of CRYPTO_ASSETS) {
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if (!asset.providerId) {
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continue;
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}
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const entry = payload[asset.providerId];
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if (!entry?.usd || entry.usd <= 0) {
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continue;
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}
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usdPrices[asset.code] = entry.usd;
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if (entry.last_updated_at && entry.last_updated_at > mostRecentUpdate) {
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mostRecentUpdate = entry.last_updated_at;
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}
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}
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return {
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usdPrices,
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updatedAt:
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mostRecentUpdate > 0
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? new Date(mostRecentUpdate * 1000).toISOString()
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: new Date().toISOString()
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};
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}
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