import {
  buildSceneFrame,
  fetchPressureDevices,
  fetchSceneFrame,
  supportsThreeDimensionalScene,
  type SceneModelIndex,
} from "./sceneData";

const mockApiFetch = jest.fn();

jest.mock("@/lib/apiFetch", () => ({
  apiFetch: (...args: unknown[]) => mockApiFetch(...args),
}));

const model: SceneModelIndex = {
  modelId: "zjb-water-network-v23",
  nodeIds: new Set(["J-1", "J-2"]),
  linkIds: new Set(["P-1", "P-2"]),
};

describe("buildSceneFrame", () => {
  beforeEach(() => {
    mockApiFetch.mockReset();
  });

  it("enables the scene only for the normalized ZJB project code", () => {
    expect(supportsThreeDimensionalScene(" ZJB ")).toBe(true);
    expect(supportsThreeDimensionalScene("tjwater_v2")).toBe(false);
    expect(supportsThreeDimensionalScene(null)).toBe(false);
  });

  it("combines one complete simulation frame and overrides pressure with cleaned SCADA", () => {
    const frame = buildSceneFrame({
      queryTime: new Date("2026-09-11T03:00:00.000Z"),
      model,
      nodeRows: [
        {
          time: "2026-09-11T03:00:00.000Z",
          node_id: "J-1",
          pressure: 31.2,
        },
        {
          time: "2026-09-11T03:00:00.000Z",
          node_id: "J-2",
          pressure: 29.7,
        },
      ],
      linkRows: [
        {
          time: "2026-09-11T03:00:00.000Z",
          link_id: "P-1",
          velocity: 0.82,
          flow: -18.4,
          status: 1,
        },
      ],
      pressureDevices: [
        { device_id: "S-1", device_type: "pressure", node_id: "J-1" },
      ],
      scadaRows: [
        {
          time: "2026-09-11T03:00:01.000Z",
          device_id: "S-1",
          monitored_value: 30.8,
          cleaned_value: 30.9,
        },
      ],
    });

    expect(frame.resultTime).toBe("2026-09-11T03:00:00.000Z");
    expect(frame.payload?.nodes["J-1"]).toEqual({
      pressure: 30.9,
      source: "scada",
      deviceId: "S-1",
      simulationPressure: 31.2,
    });
    expect(frame.payload?.links["P-1"]).toEqual({
      velocity: 0.82,
      flow: -66.24,
      direction: -1,
      status: "open",
    });
    expect(frame.stats).toMatchObject({
      simulationNodes: 2,
      simulationLinks: 1,
      scadaOverrides: 1,
      missingNodes: 0,
      missingLinks: 1,
    });
  });

  it("uses monitored SCADA when cleaned data is absent", () => {
    const frame = buildSceneFrame({
      queryTime: new Date("2026-09-11T03:00:00.000Z"),
      model,
      nodeRows: [
        {
          time: "2026-09-11T03:00:00.000Z",
          node_id: "J-1",
          pressure: 31.2,
        },
      ],
      linkRows: [
        {
          time: "2026-09-11T03:00:00.000Z",
          link_id: "P-1",
          velocity: 0.2,
          flow: 2,
          status: 0,
        },
      ],
      pressureDevices: [
        { device_id: "S-1", device_type: "pressure", node_id: "J-1" },
      ],
      scadaRows: [
        {
          time: "2026-09-11T03:00:00.000Z",
          device_id: "S-1",
          monitored_value: 30.8,
          cleaned_value: null,
        },
      ],
    });

    expect(frame.payload?.nodes["J-1"]?.pressure).toBe(30.8);
    expect(frame.payload?.links["P-1"]?.status).toBe("closed");
  });

  it("keeps the selected time and returns no payload when a complete frame is absent", () => {
    const frame = buildSceneFrame({
      queryTime: new Date("2026-09-11T03:00:00.000Z"),
      model,
      nodeRows: [
        {
          time: "2026-09-11T02:45:00.000Z",
          node_id: "J-1",
          pressure: 31.2,
        },
      ],
      linkRows: [],
      pressureDevices: [],
      scadaRows: [],
    });

    expect(frame.selectedTime).toBe("2026-09-11T03:00:00.000Z");
    expect(frame.resultTime).toBeNull();
    expect(frame.payload).toBeNull();
    expect(frame.stats.missingNodes).toBe(2);
    expect(frame.stats.missingLinks).toBe(2);
  });

  it("ignores IDs outside the scene model instead of rejecting the frame", () => {
    const frame = buildSceneFrame({
      queryTime: new Date("2026-09-11T03:00:00.000Z"),
      model,
      nodeRows: [
        {
          time: "2026-09-11T03:00:00.000Z",
          node_id: "J-UNKNOWN",
          pressure: 31.2,
        },
      ],
      linkRows: [
        {
          time: "2026-09-11T03:00:00.000Z",
          link_id: "P-UNKNOWN",
          velocity: 0.2,
          flow: 2,
          status: 2,
        },
      ],
      pressureDevices: [],
      scadaRows: [],
    });

    expect(frame.payload?.nodes).toEqual({});
    expect(frame.payload?.links).toEqual({});
    expect(frame.stats.ignoredElements).toBe(2);
  });

  it("reads pressure mappings from the paginated SCADA device response", async () => {
    mockApiFetch.mockResolvedValue({
      ok: true,
      json: async () => ({
        items: [
          { device_id: "S-1", device_type: "pressure", node_id: " J-1 " },
          { device_id: "S-2", device_type: "flow", node_id: "J-2" },
          { device_id: "S-3", device_type: "pressure", node_id: null },
        ],
        total: 3,
        limit: 1000,
        offset: 0,
      }),
    });

    const devices = await fetchPressureDevices(new AbortController().signal);

    expect(devices).toEqual([
      {
        device_id: "S-1",
        device_type: "pressure",
        node_id: "J-1",
        measurement_unit: "m",
      },
    ]);
    expect(mockApiFetch).toHaveBeenCalledWith(
      expect.stringContaining("/api/v1/scada-devices?limit=1000&offset=0"),
      expect.objectContaining({ signal: expect.any(AbortSignal) }),
    );
  });

  it("keeps simulation results when SCADA readings are temporarily unavailable", async () => {
    mockApiFetch
      .mockResolvedValueOnce({
        ok: true,
        json: async () => [
          {
            time: "2026-09-11T03:00:00.000Z",
            node_id: "J-1",
            pressure: 31.2,
          },
        ],
      })
      .mockResolvedValueOnce({
        ok: true,
        json: async () => [
          {
            time: "2026-09-11T03:00:00.000Z",
            link_id: "P-1",
            velocity: 0.8,
            flow: 12,
            status: 1,
          },
        ],
      })
      .mockResolvedValueOnce({
        ok: true,
        json: async () => ({ FLOW_UNITS: "LPS", PRESSURE_UNITS: "METERS" }),
      })
      .mockResolvedValueOnce({
        ok: false,
        status: 503,
        text: async () => "SCADA service unavailable",
      });

    const frame = await fetchSceneFrame({
      queryTime: new Date("2026-09-11T03:00:00.000Z"),
      model,
      pressureDevices: [
        { device_id: "S-1", device_type: "pressure", node_id: "J-1" },
      ],
      signal: new AbortController().signal,
    });

    expect(frame.payload?.nodes["J-1"]).toEqual({
      pressure: 31.2,
      source: "simulation",
    });
    expect(frame.stats.scadaOverrides).toBe(0);
    expect(frame.warnings).toEqual([
      "SCADA 数据暂不可用，当前仅显示模拟结果。",
    ]);
  });
});