initial commit

packages/config/src/index.ts

@@ -0,0 +1,95 @@
+import { z } from 'zod';
+
+const logLevelSchema = z.enum(['fatal', 'error', 'warn', 'info', 'debug', 'trace', 'silent']);
+
+const appEnvSchema = z.enum(['development', 'test', 'staging', 'production']);
+
+export const configSchema = z.object({
+  APP_NAME: z.string().default('HexaHost GameCloud'),
+  APP_ENV: appEnvSchema.default('development'),
+  APP_URL: z.string().url(),
+  API_URL: z.string().url(),
+  DATABASE_URL: z.string().min(1),
+  REDIS_URL: z.string().min(1),
+  SESSION_SECRET: z.string().min(32),
+  LOG_LEVEL: logLevelSchema.default('info'),
+  API_PORT: z.coerce.number().int().min(1).max(65535).default(3001),
+  WORKER_PORT: z.coerce.number().int().min(1).max(65535).default(3002),
+  NODE_ENV: z.enum(['development', 'test', 'production']).default('development'),
+});
+
+export type AppConfig = z.infer<typeof configSchema>;
+
+function readEnv(): Record<string, string | undefined> {
+  return { ...process.env };
+}
+
+export function loadConfig(env: Record<string, string | undefined> = readEnv()): AppConfig {
+  return configSchema.parse({
+    APP_NAME: env['APP_NAME'],
+    APP_ENV: env['APP_ENV'],
+    APP_URL: env['APP_URL'],
+    API_URL: env['API_URL'],
+    DATABASE_URL: env['DATABASE_URL'],
+    REDIS_URL: env['REDIS_URL'],
+    SESSION_SECRET: env['SESSION_SECRET'],
+    LOG_LEVEL: env['LOG_LEVEL'],
+    API_PORT: env['API_PORT'],
+    WORKER_PORT: env['WORKER_PORT'],
+    NODE_ENV: env['NODE_ENV'],
+  });
+}
+
+export function validateConfig(env: Record<string, string | undefined> = readEnv()): AppConfig {
+  const requiredKeys = [
+    'APP_URL',
+    'API_URL',
+    'DATABASE_URL',
+    'REDIS_URL',
+    'SESSION_SECRET',
+  ] as const;
+
+  const missing = requiredKeys.filter((key) => !env[key] || env[key]!.trim() === '');
+
+  if (missing.length > 0) {
+    throw new Error(
+      `Missing required environment variables: ${missing.join(', ')}`,
+    );
+  }
+
+  const result = configSchema.safeParse({
+    APP_NAME: env['APP_NAME'],
+    APP_ENV: env['APP_ENV'],
+    APP_URL: env['APP_URL'],
+    API_URL: env['API_URL'],
+    DATABASE_URL: env['DATABASE_URL'],
+    REDIS_URL: env['REDIS_URL'],
+    SESSION_SECRET: env['SESSION_SECRET'],
+    LOG_LEVEL: env['LOG_LEVEL'],
+    API_PORT: env['API_PORT'],
+    WORKER_PORT: env['WORKER_PORT'],
+    NODE_ENV: env['NODE_ENV'],
+  });
+
+  if (!result.success) {
+    const issues = result.error.issues
+      .map((issue) => `${issue.path.join('.')}: ${issue.message}`)
+      .join('; ');
+    throw new Error(`Invalid configuration: ${issues}`);
+  }
+
+  return result.data;
+}
+
+let cachedConfig: AppConfig | undefined;
+
+export function getConfig(): AppConfig {
+  if (!cachedConfig) {
+    cachedConfig = validateConfig();
+  }
+  return cachedConfig;
+}
+
+export function resetConfigCache(): void {
+  cachedConfig = undefined;
+}