import path from "node:path";

export type Env = {
  port: number;
  apiPort: number;
  publicBaseUrl: string;
  storageDir: string;
  databasePath: string;
  isProduction: boolean;
};

export function loadEnv(overrides: Partial<NodeJS.ProcessEnv> = {}): Env {
  const read = (key: string, fallback: string) =>
    overrides[key] ?? process.env[key] ?? fallback;

  const isProduction =
    (overrides.NODE_ENV ?? process.env.NODE_ENV) === "production";

  return {
    port: Number(read("PORT", "3000")),
    apiPort: Number(read("API_PORT", "3010")),
    publicBaseUrl: read("PUBLIC_BASE_URL", "http://localhost:3000").replace(
      /\/$/,
      "",
    ),
    storageDir: path.resolve(read("STORAGE_DIR", "./storage")),
    databasePath: path.resolve(read("DATABASE_PATH", "./data/catalogs.sqlite")),
    isProduction,
  };
}