import { z } from "zod";

const schema = z.object({
  NODE_ENV: z.enum(["production", "development", "test"] as const).optional(),
  CORE_API_KEY: z.string().optional(),
  TEMP_EMAIL: z.string().optional(),
  TEMP_PASSWORD: z.string().optional(),
});

declare global {
  namespace NodeJS {
    interface ProcessEnv extends z.infer<typeof schema> {}
  }
}

export function init() {
  const parsed = schema.safeParse(process.env);
  if (parsed.success === false) {
    console.error(
      "❌ Invalid environment variables:",
      parsed.error.flatten().fieldErrors,
    );

    throw new Error("Invalid environment variables");
  }
}

/**
 * This is used in both `entry.server.ts` and `root.tsx` to ensure that
 * the environment variables are set and globally available before the app is
 * started.
 *
 * NOTE: Do *not* add any environment variables in here that you do not wish to
 * be included in the client.
 * @returns all public ENV variables
 */
export function getEnv() {
  return {
    MODE: process.env.NODE_ENV,
    VITE_CORE_API: process.env.VITE_CORE_API,
  };
}

type ENV = ReturnType<typeof getEnv>;

declare global {
  var ENV: ENV;
  interface Window {
    ENV: ENV;
  }
}