import { describe, expect, test, vi } from "vitest";

import { DEFAULT_BACKEND_METRICS_BASE_URL } from "../src/shared/backend-metrics-config";
import {
  buildBackendMetricsSearchRequestBody,
  buildBackendMetricsSearchUrl,
  createBackendMetricsClient,
  mapBackendMetricsSearchResponse
} from "../src/shared/backend-metrics-client";

describe("backend-metrics-client", () => {
  test("exports the default backend metrics base url", () => {
    expect(DEFAULT_BACKEND_METRICS_BASE_URL).toBe(
      "https://talent-search.intelligrow.cn"
    );
  });

  test("builds the backend search url", () => {
    expect(buildBackendMetricsSearchUrl("https://talent-search.intelligrow.cn")).toBe(
      "https://talent-search.intelligrow.cn/api/v1/history/talents/search"
    );
  });

  test("builds a star_id batch request body", () => {
    expect(
      buildBackendMetricsSearchRequestBody(["7252982749131178039", "7290491710910496809"])
    ).toEqual({
      page: 1,
      size: 20,
      type: "star_id",
      values: ["7252982749131178039", "7290491710910496809"]
    });
  });

  test("maps backend metrics rows into display-ready values", () => {
    expect(
      mapBackendMetricsSearchResponse({
        data: {
          data: [
            {
              avg_a3_increase_cnt: 78366.22448979592,
              avg_after_view_search_cnt: 9689.959183673469,
              avg_after_view_search_rate: 0.0036203703369054683,
              avg_new_a3_rate: 0.034428135017531614,
              cp_search: 14.460581961550774,
              cpa3: 1.788046443373538,
              star_id: "7252982749131178039"
            }
          ]
        },
        success: true
      })
    ).toEqual([
      {
        a3IncreaseCount: "78,366.22",
        afterViewSearchCount: "9,689.96",
        afterViewSearchRate: "0.36%",
        cpSearch: "14.46",
        cpa3: "1.79",
        newA3Rate: "3.44%",
        starId: "7252982749131178039"
      }
    ]);
  });

  test("derives A3 count and CPA3 from the live aggregate response shape", () => {
    expect(
      mapBackendMetricsSearchResponse({
        data: {
          data: [
            {
              avg_after_view_search_cnt: 25982,
              avg_after_view_search_rate: 0.0010872130261527625,
              avg_new_a3_rate: 0.11075860229946684,
              cp_search: 21.168501270110077,
              cpe: 0.630604497471276,
              cpm: 23.014670324994974,
              star_id: "7021245050621263906",
              total_estimated_video_cost: 1100000,
              total_play_cnt: 47795601,
              video_count: 2
            }
          ]
        },
        success: true
      })
    ).toEqual([
      {
        a3IncreaseCount: "2,646,886.98",
        afterViewSearchCount: "25,982.00",
        afterViewSearchRate: "0.11%",
        cpSearch: "21.17",
        cpa3: "0.21",
        newA3Rate: "11.08%",
        starId: "7021245050621263906"
      }
    ]);
  });

  test("posts star ids with bearer auth when searching backend metrics", async () => {
    const fetchImpl = async (_input: string, init?: RequestInit) => ({
      json: async () => ({
        data: {
          data: []
        },
        success: true
      }),
      ok: true,
      status: 200,
      url: "https://talent-search.intelligrow.cn/api/v1/history/talents/search"
    });
    const fetchSpy = vi.fn(fetchImpl);
    const client = createBackendMetricsClient({
      fetchImpl: fetchSpy,
      getAccessToken: async () => "test-token"
    });

    await client.searchByStarIds(["111", "222"]);

    expect(fetchSpy).toHaveBeenCalledWith(
      "https://talent-search.intelligrow.cn/api/v1/history/talents/search",
      expect.objectContaining({
        body: JSON.stringify({
          page: 1,
          size: 20,
          type: "star_id",
          values: ["111", "222"]
        }),
        headers: {
          Authorization: "Bearer test-token",
          "Content-Type": "application/json"
        },
        method: "POST"
      })
    );
  });
});