Implement exporter using nocap from nostr-watch along with tests

test/config.test.ts

@@ -0,0 +1,48 @@
+import test from "node:test";
+import assert from "node:assert/strict";
+
+import { loadConfig } from "../src/config.js";
+
+test("loadConfig parses valid relays and ignores invalid entries", () => {
+  const config = loadConfig({
+    RELAYS: "wss://relay.damus.io,not-a-url,wss://nos.lol",
+    WRITE_CHECK_ENABLED: "false",
+  });
+
+  assert.equal(config.relays.length, 2);
+  assert.equal(config.relays[0]?.relay, "wss://relay.damus.io/");
+  assert.equal(config.relays[1]?.relay, "wss://nos.lol/");
+  assert.equal(config.writeCheck.enabled, false);
+  assert.equal(config.probeIntervalMs, 0);
+  assert.ok(config.warnings.some((w) => w.includes("Ignoring invalid relay URL")));
+});
+
+test("loadConfig generates write-check private key when missing", () => {
+  const config = loadConfig({
+    RELAYS: "wss://relay.damus.io",
+    WRITE_CHECK_ENABLED: "true",
+  });
+
+  assert.equal(config.writeCheck.enabled, true);
+  assert.match(config.writeCheck.privkey ?? "", /^[0-9a-f]{64}$/i);
+  assert.ok(
+    config.warnings.some((w) => w.includes("generated ephemeral write-check key")),
+    "expected warning about generated write-check key",
+  );
+});
+
+test("loadConfig generates write-check private key when configured key is invalid", () => {
+  const config = loadConfig({
+    RELAYS: "wss://relay.damus.io",
+    WRITE_CHECK_ENABLED: "true",
+    WRITE_CHECK_PRIVKEY: "not-a-valid-key",
+  });
+
+  assert.equal(config.writeCheck.enabled, true);
+  assert.match(config.writeCheck.privkey ?? "", /^[0-9a-f]{64}$/i);
+  assert.notEqual(config.writeCheck.privkey, "not-a-valid-key");
+  assert.ok(
+    config.warnings.some((w) => w.includes("WRITE_CHECK_PRIVKEY invalid")),
+    "expected warning about invalid configured key",
+  );
+});