import { describe, expect, test } from "bun:test";

function shouldEnableHistory(
  selectedTargetId: null | number,
  timeFrom: string,
  timeTo: string,
  activeTab: string,
): boolean {
  return selectedTargetId !== null && !!timeFrom && !!timeTo && activeTab === "history";
}

function shouldEnableMetrics(selectedTargetId: null | number, timeFrom: string, timeTo: string): boolean {
  return selectedTargetId !== null && !!timeFrom && !!timeTo;
}

describe("metrics enabled 条件", () => {
  test("未选中目标时不启用", () => {
    expect(shouldEnableMetrics(null, "", "")).toBe(false);
  });

  test("选中目标但无时间范围时不启用", () => {
    expect(shouldEnableMetrics(1, "", "")).toBe(false);
  });

  test("选中目标且有时间范围时启用", () => {
    expect(shouldEnableMetrics(1, "2025-01-01T00:00:00.000Z", "2025-01-02T00:00:00.000Z")).toBe(true);
  });
});

describe("history enabled 条件", () => {
  test("未选中目标时不启用", () => {
    expect(shouldEnableHistory(null, "from", "to", "history")).toBe(false);
  });

  test("选中目标但概览 Tab 时不启用", () => {
    expect(shouldEnableHistory(1, "2025-01-01T00:00:00.000Z", "2025-01-02T00:00:00.000Z", "overview")).toBe(false);
  });

  test("选中目标且记录 Tab 激活但无时间范围时不启用", () => {
    expect(shouldEnableHistory(1, "", "", "history")).toBe(false);
  });

  test("选中目标、有时间范围且记录 Tab 激活时启用", () => {
    expect(shouldEnableHistory(1, "2025-01-01T00:00:00.000Z", "2025-01-02T00:00:00.000Z", "history")).toBe(true);
  });

  test("打开 Drawer 默认概览 Tab 时不启用 history", () => {
    expect(shouldEnableHistory(1, "2025-01-01T00:00:00.000Z", "2025-01-02T00:00:00.000Z", "overview")).toBe(false);
  });

  test("概览 Tab 时间变化时不启用 history", () => {
    expect(shouldEnableHistory(1, "2025-01-01T00:00:00.000Z", "2025-01-02T00:00:00.000Z", "overview")).toBe(false);
  });

  test("记录 Tab 时间变化时启用 history", () => {
    expect(shouldEnableHistory(1, "2025-01-01T00:00:00.000Z", "2025-01-02T00:00:00.000Z", "history")).toBe(true);
  });
});

describe("默认概览 Tab 行为", () => {
  test("打开 Drawer 时 activeTab 应为 overview", () => {
    const resetTab = "overview";
    expect(resetTab).toBe("overview");
  });

  test("切换目标时 activeTab 应重置为 overview", () => {
    const previousTab = "history";
    const resetTab = "overview";
    expect(previousTab).not.toBe(resetTab);
    expect(resetTab).toBe("overview");
  });
});

describe("history 页码重置", () => {
  test("时间变化时 historyPage 应重置为 1", () => {
    const previousPage = 3;
    const resetPage = 1;
    expect(previousPage).not.toBe(resetPage);
    expect(resetPage).toBe(1);
  });
});