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

import {
  checkActiveBytes,
  checkActivePercent,
  checkAvailableBytes,
  checkAvailablePercent,
  checkBuffcacheBytes,
  checkFreeBytes,
  checkFreePercent,
  checkSwapFreeBytes,
  checkSwapTotalBytes,
  checkSwapUsagePercent,
  checkSwapUsedBytes,
  checkTotalBytes,
  checkUsagePercent,
  checkUsedBytes,
  checkUsedPercent,
} from "../../../../../src/server/checker/runner/mem/expect";

describe("Mem expect checks - 百分比字段", () => {
  test("checkUsagePercent 匹配", () => {
    expect(checkUsagePercent(50, { lte: 85 }).matched).toBe(true);
  });

  test("checkUsagePercent 不匹配", () => {
    const result = checkUsagePercent(90, { lte: 85 });
    expect(result.matched).toBe(false);
    expect(result.failure?.phase).toBe("usage");
  });

  test("checkUsedPercent 匹配", () => {
    expect(checkUsedPercent(75, { lte: 80 }).matched).toBe(true);
  });

  test("checkUsedPercent 不匹配", () => {
    const result = checkUsedPercent(85, { lte: 80 });
    expect(result.matched).toBe(false);
    expect(result.failure?.phase).toBe("used");
  });

  test("checkFreePercent 匹配", () => {
    expect(checkFreePercent(25, { gte: 15 }).matched).toBe(true);
  });

  test("checkFreePercent 不匹配", () => {
    const result = checkFreePercent(10, { gte: 15 });
    expect(result.matched).toBe(false);
    expect(result.failure?.phase).toBe("free");
  });

  test("checkActivePercent 匹配", () => {
    expect(checkActivePercent(50, { lte: 85 }).matched).toBe(true);
  });

  test("checkAvailablePercent 匹配", () => {
    expect(checkAvailablePercent(50, { gte: 20 }).matched).toBe(true);
  });

  test("undefined matcher 直接通过", () => {
    expect(checkUsagePercent(99.9, undefined).matched).toBe(true);
    expect(checkFreePercent(0, undefined).matched).toBe(true);
  });
});

describe("Mem expect checks - 字节字段", () => {
  test("checkActiveBytes 匹配", () => {
    expect(checkActiveBytes(4294967296, { lte: 8589934592 }).matched).toBe(true);
  });

  test("checkUsedBytes 不匹配", () => {
    const result = checkUsedBytes(10737418240, { lte: 8589934592 });
    expect(result.matched).toBe(false);
    expect(result.failure?.phase).toBe("usedBytes");
  });

  test("checkFreeBytes 匹配", () => {
    expect(checkFreeBytes(4294967296, { gte: 2147483648 }).matched).toBe(true);
  });

  test("checkAvailableBytes 匹配", () => {
    expect(checkAvailableBytes(6442450944, { gte: 4294967296 }).matched).toBe(true);
  });

  test("checkTotalBytes 匹配", () => {
    expect(checkTotalBytes(17179869184, { gte: 8589934592 }).matched).toBe(true);
  });
});

describe("Mem expect checks - swap 字段", () => {
  test("checkSwapUsagePercent null 通过 gte 检查 (Number(null)=0)", () => {
    expect(checkSwapUsagePercent(null, { gte: 0 }).matched).toBe(true);
  });

  test("checkSwapUsagePercent null 不匹配大于 0 的 gte", () => {
    const result = checkSwapUsagePercent(null, { gte: 1 });
    expect(result.matched).toBe(false);
    expect(result.failure?.phase).toBe("swapUsage");
  });

  test("checkSwapUsagePercent 有值时正常匹配", () => {
    expect(checkSwapUsagePercent(50, { lte: 80 }).matched).toBe(true);
  });

  test("checkSwapUsagePercent 有值时不匹配", () => {
    const result = checkSwapUsagePercent(90, { lte: 80 });
    expect(result.matched).toBe(false);
  });

  test("checkSwapUsedBytes null 通过 gte:0 (Number(null)=0)", () => {
    expect(checkSwapUsedBytes(null, { gte: 0 }).matched).toBe(true);
  });

  test("checkSwapUsedBytes 0 通过 gte:0", () => {
    expect(checkSwapUsedBytes(0, { gte: 0 }).matched).toBe(true);
  });

  test("checkSwapFreeBytes null 通过 gte:0", () => {
    expect(checkSwapFreeBytes(null, { gte: 0 }).matched).toBe(true);
  });

  test("checkSwapTotalBytes null 匹配 equals:null", () => {
    expect(checkSwapTotalBytes(null, { equals: null }).matched).toBe(true);
  });

  test("checkSwapTotalBytes 0 匹配 equals:0", () => {
    expect(checkSwapTotalBytes(0, { equals: 0 }).matched).toBe(true);
  });

  test("checkSwapTotalBytes null 不匹配 equals:0", () => {
    expect(checkSwapTotalBytes(null, { equals: 0 }).matched).toBe(false);
  });
});

describe("Mem expect checks - buffcacheBytes", () => {
  test("checkBuffcacheBytes 有值时匹配", () => {
    expect(checkBuffcacheBytes(1073741824, { lte: 2147483648 }).matched).toBe(true);
  });

  test("checkBuffcacheBytes null 通过 gte:0 (Number(null)=0)", () => {
    expect(checkBuffcacheBytes(null, { gte: 0 }).matched).toBe(true);
  });

  test("checkBuffcacheBytes null 不匹配 gte:1", () => {
    const result = checkBuffcacheBytes(null, { gte: 1 });
    expect(result.matched).toBe(false);
    expect(result.failure?.phase).toBe("buffcacheBytes");
  });
});