Initial import of verae-middleware from zapier monorepo

src/config.js

@@ -0,0 +1,144 @@
+/**
+ * @fileoverview Process configuration for the Verae Zapier middleware.
+ * @module config
+ *
+ * Loads optional `.env` then exports typed settings used by HTTP, NATS, and workers.
+ */
+
+import { readFileSync, existsSync } from 'node:fs';
+import { resolve, dirname } from 'node:path';
+import { fileURLToPath } from 'node:url';
+import { createDebugger } from './debug/logger.js';
+
+const log = createDebugger('app');
+const __dirname = dirname(fileURLToPath(import.meta.url));
+const rootDir = resolve(__dirname, '..');
+
+/**
+ * Load KEY=VALUE pairs from `.env` without overriding existing process.env keys.
+ * @returns {void}
+ */
+export function loadEnvFile() {
+  const envPath = resolve(rootDir, '.env');
+  if (!existsSync(envPath)) return;
+
+  for (const line of readFileSync(envPath, 'utf8').split('\n')) {
+    const trimmed = line.trim();
+    if (!trimmed || trimmed.startsWith('#')) continue;
+    const eq = trimmed.indexOf('=');
+    if (eq === -1) continue;
+    const key = trimmed.slice(0, eq).trim();
+    const value = trimmed.slice(eq + 1).trim();
+    if (!(key in process.env)) {
+      process.env[key] = value;
+    }
+  }
+}
+
+loadEnvFile();
+
+/**
+ * @param {string|undefined} value
+ * @param {boolean} [fallback=false]
+ * @returns {boolean}
+ */
+function bool(value, fallback = false) {
+  if (value === undefined) return fallback;
+  return ['1', 'true', 'yes', 'on'].includes(String(value).toLowerCase());
+}
+
+/**
+ * @param {string|undefined} value
+ * @param {number} fallback
+ * @returns {number}
+ */
+function int(value, fallback) {
+  const parsed = Number.parseInt(value ?? '', 10);
+  return Number.isFinite(parsed) ? parsed : fallback;
+}
+
+/**
+ * Runtime configuration object.
+ * @type {{
+ *   port: number,
+ *   host: string,
+ *   veraeApiBaseUrl: string,
+ *   mockVerae: boolean,
+ *   natsEnabled: boolean,
+ *   natsUrl: string,
+ *   tokenSecret: string,
+ *   jobPollIntervalMs: number,
+ *   jobPollMaxAttempts: number,
+ *   storePath: string,
+ *   upgradeUrl: string,
+ *   adminSecret: string,
+ * }}
+ */
+export const config = {
+  port: int(process.env.PORT, 3100),
+  host: process.env.HOST ?? '0.0.0.0',
+  veraeApiBaseUrl: (process.env.VERAE_API_BASE_URL ?? 'http://localhost:8080').replace(
+    /\/$/,
+    '',
+  ),
+  mockVerae: bool(process.env.MOCK_VERAE, false),
+  natsEnabled: bool(process.env.NATS_ENABLED, false),
+  natsUrl: process.env.NATS_URL ?? 'nats://127.0.0.1:4222',
+  tokenSecret: process.env.TOKEN_SECRET ?? 'dev-secret-change-me',
+  jobPollIntervalMs: int(process.env.JOB_POLL_INTERVAL_MS, 2000),
+  jobPollMaxAttempts: int(process.env.JOB_POLL_MAX_ATTEMPTS, 60),
+  waitTimeoutMs: int(process.env.WAIT_TIMEOUT_MS, 25000),
+  mockJobCompleteMs: int(process.env.MOCK_JOB_COMPLETE_MS, 150),
+  storePath: resolve(rootDir, process.env.STORE_PATH ?? './data/store.json'),
+  upgradeUrl: process.env.UPGRADE_URL ?? 'https://veraetime.net/billing',
+  adminSecret: process.env.ADMIN_SECRET ?? 'change-me-admin',
+};
+
+/**
+ * Default plan limits. `null` numeric fields mean unlimited.
+ * @type {Record<string, {
+ *   timestamps: number|null,
+ *   verifications: number|null,
+ *   batch: boolean,
+ *   batchMaxItems: number|null,
+ *   requestsPerMinute: number
+ * }>}
+ */
+export const PLAN_LIMITS = {
+  free: {
+    timestamps: 50,
+    verifications: 50,
+    batch: false,
+    batchMaxItems: 0,
+    requestsPerMinute: 30,
+  },
+  starter: {
+    timestamps: 500,
+    verifications: 500,
+    batch: true,
+    batchMaxItems: 10,
+    requestsPerMinute: 120,
+  },
+  pro: {
+    timestamps: 5000,
+    verifications: 5000,
+    batch: true,
+    batchMaxItems: 100,
+    requestsPerMinute: 600,
+  },
+  enterprise: {
+    timestamps: null,
+    verifications: null,
+    batch: true,
+    batchMaxItems: null,
+    requestsPerMinute: 3000,
+  },
+};
+
+log.info('config loaded', {
+  veraeApiBaseUrl: config.veraeApiBaseUrl,
+  mockVerae: config.mockVerae,
+  natsEnabled: config.natsEnabled,
+  natsUrl: config.natsUrl,
+  port: config.port,
+});