initial relay scaffold

2026-05-11 20:03:27 -05:00
commit b9d86fa303
58 changed files with 7609 additions and 0 deletions
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+// Live-reloading config layer. Mirrors Recap's config.js pattern: read
+// /data/config/relay-config.json on every access (filesystem watcher
+// pulls in StartOS-action changes without a daemon restart), parse,
+// and expose typed accessors.
+//
+// All defaults match the schema in startos/file-models/config.json.ts.
+
+import fs from "fs/promises";
+import path from "path";
+
+let dataDir = "/data";
+let cached = { mtimeMs: 0, snapshot: defaultConfig() };
+
+function defaultConfig() {
+  return {
+    relay_gemini_api_key: "",
+    relay_parakeet_base_url: "",
+    relay_gemma_base_url: "",
+    relay_keysat_base_url: "https://keysat.xyz",
+    relay_admin_username: "",
+    relay_admin_password_hash: "",
+    relay_admin_password_salt: "",
+    relay_admin_session_secret: "",
+    relay_tier_quotas_json: JSON.stringify({
+      core: { lifetime: 5, monthly: null, geminiCapMonthly: null },
+      pro: { lifetime: null, monthly: 50, geminiCapMonthly: 25 },
+      max: { lifetime: null, monthly: null, geminiCapMonthly: 50 },
+    }),
+  };
+}
+
+function configPath() {
+  return path.join(dataDir, "config", "relay-config.json");
+}
+
+export async function initConfig({ dataDir: dd }) {
+  if (dd) dataDir = dd;
+  await fs.mkdir(path.dirname(configPath()), { recursive: true }).catch(() => {});
+  // Prime the cache so the first request doesn't pay for a file-read.
+  await getConfigSnapshot();
+}
+
+// Reads the on-disk config and merges with defaults. Cheap — single
+// stat + read per call, but the result is cached until the file mtime
+// changes so repeat callers within one request don't re-read.
+export async function getConfigSnapshot() {
+  const p = configPath();
+  let stat;
+  try {
+    stat = await fs.stat(p);
+  } catch {
+    return cached.snapshot;
+  }
+  if (stat.mtimeMs === cached.mtimeMs) return cached.snapshot;
+  try {
+    const raw = await fs.readFile(p, "utf8");
+    const parsed = JSON.parse(raw);
+    cached = {
+      mtimeMs: stat.mtimeMs,
+      snapshot: { ...defaultConfig(), ...parsed },
+    };
+  } catch (err) {
+    console.warn(`[config] failed to parse ${p}: ${err?.message}`);
+  }
+  return cached.snapshot;
+}
+
+// Parsed view of relay_tier_quotas_json, with safe fallbacks if the
+// blob is missing or malformed.
+export async function getTierQuotas() {
+  const cfg = await getConfigSnapshot();
+  try {
+    const parsed = JSON.parse(cfg.relay_tier_quotas_json);
+    return {
+      core: {
+        lifetime: parsed?.core?.lifetime ?? 5,
+        monthly: parsed?.core?.monthly ?? null,
+        geminiCapMonthly: parsed?.core?.geminiCapMonthly ?? null,
+      },
+      pro: {
+        lifetime: parsed?.pro?.lifetime ?? null,
+        monthly: parsed?.pro?.monthly ?? 50,
+        geminiCapMonthly: parsed?.pro?.geminiCapMonthly ?? 25,
+      },
+      max: {
+        lifetime: parsed?.max?.lifetime ?? null,
+        monthly: parsed?.max?.monthly ?? null,
+        geminiCapMonthly: parsed?.max?.geminiCapMonthly ?? 50,
+      },
+    };
+  } catch {
+    return {
+      core: { lifetime: 5, monthly: null, geminiCapMonthly: null },
+      pro: { lifetime: null, monthly: 50, geminiCapMonthly: 25 },
+      max: { lifetime: null, monthly: null, geminiCapMonthly: 50 },
+    };
+  }
+}