import { Layer } from "effect";
import { LinuxUserService } from "./LinuxUserService";
import { DirectoryService } from "./DirectoryService";
import { QuotaService } from "./QuotaService";
import { UserManagementService } from "./UserManagementService";

/**
 * User Management Layer Composition
 *
 * Provides Effect-TS layers for dependency injection of user management services.
 */

// Independent services (no dependencies)
const IndependentServices = Layer.mergeAll(
  LinuxUserService.Live,
  DirectoryService.Live,
  QuotaService.Live
);

// User management service depends on all base services
const UserManagementWithDeps = Layer.provide(
  UserManagementService.Live,
  IndependentServices
);

// Complete layer with all services
export const UserManagementLayer = Layer.mergeAll(
  IndependentServices,
  UserManagementWithDeps
);

/**
 * Create a complete user management layer
 *
 * Usage:
 * ```typescript
 * const layer = createUserManagementLayer();
 * const runtime = ManagedRuntime.make(layer);
 *
 * const result = await runtime.runPromise(
 *   Effect.gen(function* () {
 *     const userMgmt = yield* UserManagementService;
 *     return yield* userMgmt.createUser({
 *       username: "john",
 *       email: "john@example.com",
 *     });
 *   })
 * );
 * ```
 */
export const createUserManagementLayer = () => UserManagementLayer;