import fs from "fs";
import path from "path";
import { fileURLToPath } from "url";
export interface EtsyConfig {
apiKey: string;
sharedSecret: string;
refreshToken: string;
}
export function loadEtsyConfig(): EtsyConfig {
// 1. Prefer values supplied via environment variables
let apiKey: string | undefined = process.env.ETSY_API_KEY;
let sharedSecret: string | undefined = process.env.ETSY_SHARED_SECRET;
let refreshToken: string | undefined = process.env.ETSY_REFRESH_TOKEN;
// 2. When any value is missing, attempt to read from the optional settings file
if (!apiKey || !sharedSecret || !refreshToken) {
try {
const __dirname = path.dirname(fileURLToPath(import.meta.url));
const settingsPath = path.join(__dirname, "..", "etsy_mcp_settings.json");
if (fs.existsSync(settingsPath)) {
const raw = fs.readFileSync(settingsPath, "utf-8");
const cfg = JSON.parse(raw)["etsy-mcp-server"] ?? {};
// Only fill in values that are currently undefined so that env vars always win
apiKey = apiKey || cfg.keystring;
sharedSecret = sharedSecret || cfg.sharedSecret;
refreshToken = refreshToken || cfg.refreshToken;
if (process.env.NODE_ENV === "test") {
fs.unlinkSync(settingsPath);
}
}
} catch {
// The file is optional – ignore if it is missing or malformed
}
}
// 3. Validate that we now have all required configuration pieces
if (!apiKey || !sharedSecret || !refreshToken) {
throw new Error(
"ETSY_API_KEY, ETSY_SHARED_SECRET, and ETSY_REFRESH_TOKEN environment variables are required"
);
}
return {
apiKey,
sharedSecret,
refreshToken,
};
}
