import { config as loadEnv } from "dotenv";
import { z } from "zod";

loadEnv();

const schema = z.object({
  NODE_ENV: z.enum(["development", "production", "test"]).default("production"),
  PORT: z.coerce.number().int().positive().default(8811),
  LOG_LEVEL: z.enum(["debug", "info", "warn", "error"]).default("info"),
  GATEWAY_VERSION: z.string().default("0.1.0"),
  ENABLED_PLUGINS: z.string().default(""),
  AGENT_TOKENS: z.string().default(""),
  PLUGINS_DIR: z.string().default("./dist/plugins"),
});

const parsed = schema.safeParse(process.env);
if (!parsed.success) {
  // Boot-time validation failure: print and exit. Never let a misconfigured
  // gateway start up partially.
  console.error("Invalid environment configuration:", parsed.error.format());
  process.exit(1);
}

export const env = parsed.data;

export const enabledPlugins = env.ENABLED_PLUGINS
  ? env.ENABLED_PLUGINS.split(",")
      .map((s) => s.trim())
      .filter(Boolean)
  : [];