import { describe, expect, it } from "vitest";
import { handleApiResponse, handlePaginatedResponse } from "@/api/handle-api-response";

describe("handleApiResponse", () => {
  it("returns array payloads as-is", () => {
    const items = [{ id: 1 }, { id: 2 }];
    expect(handleApiResponse<typeof items>(items)).toEqual(items);
  });

  it("unwraps data, Data, and value wrappers", () => {
    expect(handleApiResponse<{ id: number }>({ data: { id: 1 } })).toEqual({ id: 1 });
    expect(handleApiResponse<{ id: number }>({ Data: { id: 2 } })).toEqual({ id: 2 });
    expect(handleApiResponse<{ id: number }>({ value: { id: 3 } })).toEqual({ id: 3 });
  });

  it("returns object payload when no wrapper is present", () => {
    const payload = { id: 99, name: "Test" };
    expect(handleApiResponse(payload)).toEqual(payload);
  });
});

describe("handlePaginatedResponse", () => {
  it("normalizes paginated ASP.NET payload", () => {
    const result = handlePaginatedResponse<{ id: number }>(
      {
        Data: [{ id: 1 }, { id: 2 }],
        TotalCount: 50,
        PageNumber: 2,
        PageSize: 25,
      },
      { page: 2, pageSize: 25 },
    );

    expect(result).toEqual({
      items: [{ id: 1 }, { id: 2 }],
      totalCount: 50,
      page: 2,
      pageSize: 25,
    });
  });

  it("handles plain arrays", () => {
    const result = handlePaginatedResponse([{ id: 1 }], { page: 1, pageSize: 10 });

    expect(result.items).toEqual([{ id: 1 }]);
    expect(result.totalCount).toBe(1);
    expect(result.page).toBe(1);
    expect(result.pageSize).toBe(10);
  });
});