feat(infisical-pg): added all previous simple server middlewares, swagger support

backend-pg/src/lib/config/env.ts

@@ -0,0 +1,28 @@
+import { Logger } from "pino";
+import { z } from "zod";
+
+const envSchema = z.object({
+  NODE_ENV: z.enum(["development", "test", "production"]).default("development"),
+  SALT_ROUNDS: z.coerce.number().default(10),
+  // TODO(akhilmhdh): will be changed to one
+  ENCRYPTION_KEY: z.string().optional(),
+  ROOT_ENCRYPTION_KEY: z.string().optional(),
+  HTTPS_ENABLED: z
+    .enum(["true", "false"])
+    .optional()
+    .transform((val) => val === "true")
+});
+
+let envCfg: Readonly<z.infer<typeof envSchema>>;
+
+export const getConfig = () => envCfg;
+// cannot import singleton logger directly as it needs config to load various transport
+export const initEnvConfig = (logger: Logger) => {
+  const parsedEnv = envSchema.safeParse(process.env);
+  if (!parsedEnv.success) {
+    logger.error("Invalid environment variables. Check the error below");
+    logger.error(parsedEnv.error);
+    process.exit(-1);
+  }
+  envCfg = Object.freeze(parsedEnv.data);
+};