import { describe, expect, it } from "vitest";

import {
  mapOperationPayload,
  mapResourceDto,
} from "../../src/adapters/http/resource-mapper.js";
import { toResourceViewModel } from "../../src/application/view-models/resource-view-model.js";

describe("DTO to model to view-model mapping", () => {
  it("contains raw DTO names at the HTTP boundary", () => {
    const model = mapResourceDto({
      id: "resource-1",
      name: "Example",
      createdAt: "2026-07-25T00:00:00.000Z",
      backendOnly: "not propagated",
    });

    expect(model).toEqual({
      id: "resource-1",
      displayName: "Example",
      createdAt: "2026-07-25T00:00:00.000Z",
    });
    expect(model).not.toHaveProperty("name");
    expect(model).not.toHaveProperty("backendOnly");
  });

  it("maps operation payloads and rejects missing mappers", () => {
    expect(
      mapOperationPayload("LIST_SAMPLE_RESOURCES", [
        { id: "resource-1", name: "Example" },
      ]),
    ).toEqual([
      { id: "resource-1", displayName: "Example", createdAt: null },
    ]);
    expect(() => mapOperationPayload("UNKNOWN", {})).toThrow(
      "No boundary mapper registered",
    );
  });

  it("projects an application-owned render-ready shape", () => {
    const model = mapResourceDto({
      id: "resource-1",
      name: "Example",
      createdAt: null,
    });
    expect(toResourceViewModel(model)).toEqual({
      resourceId: "resource-1",
      title: "Example",
      createdAtLabel: null,
    });
  });
});