import { describe, it, expect } from "vitest";
import { parseMetrics } from "./machineMetrics.js";

const RAW = [
  "===SU:METRICS_CPU===",
  "0.08 0.12 0.09 1/234 5678",
  "4",
  "===SU:METRICS_MEM===",
  "MemTotal:        4194304 kB",
  "MemAvailable:    2097152 kB",
  "===SU:METRICS_FS===",
  "FS\t/\text4\t32000000000\t9280000000\t29%",
  "FS\t/boot\text2\t500000000\t475000000\t95%",
  "===SU:EXIT=0===",
].join("\n");

describe("parseMetrics", () => {
  it("lit load average et cores", () => {
    const m = parseMetrics(RAW);
    expect(m.cpu.load1).toBe(0.08);
    expect(m.cpu.load5).toBe(0.12);
    expect(m.cpu.cores).toBe(4);
  });

  it("calcule la mémoire en octets (kB→B) et le pourcentage utilisé", () => {
    const m = parseMetrics(RAW);
    expect(m.memory.totalBytes).toBe(4194304 * 1024);
    expect(m.memory.availableBytes).toBe(2097152 * 1024);
    expect(m.memory.usedBytes).toBe((4194304 - 2097152) * 1024);
    expect(m.memory.usedPercent).toBe(50);
  });

  it("liste les systèmes de fichiers", () => {
    const m = parseMetrics(RAW);
    expect(m.filesystems).toHaveLength(2);
    expect(m.filesystems[0]).toEqual({
      mount: "/",
      fstype: "ext4",
      sizeBytes: 32000000000,
      usedBytes: 9280000000,
      usedPercent: 29,
    });
  });

  it("émet un warning pour un FS quasi plein (>=90%)", () => {
    const m = parseMetrics(RAW);
    expect(m.warnings.some((w) => w.includes("/boot"))).toBe(true);
  });
});