import { z } from "zod";

const envSchema = z.object({
  APP_NAME: z.string().min(1).default("porthole"),
  NEXT_PUBLIC_APP_NAME: z.string().min(1).optional()
});

let cachedEnv: z.infer<typeof envSchema> | undefined;

export function getEnv() {
  if (cachedEnv) return cachedEnv;

  const parsed = envSchema.safeParse(process.env);
  if (!parsed.success) {
    throw new Error(`Invalid environment variables: ${parsed.error.message}`);
  }

  cachedEnv = parsed.data;
  return cachedEnv;
}

export function getAppName() {
  const env = getEnv();
  return env.NEXT_PUBLIC_APP_NAME ?? env.APP_NAME;
}