import fs from "node:fs";
import { afterAll, afterEach, beforeAll, beforeEach, describe, expect, it } from "vitest";
import { getLogger, resetLogger, setLoggerOverride } from "../logging.js";
import { createSuiteLogPathTracker } from "./log-test-helpers.js";

const logPathTracker = createSuiteLogPathTracker("openclaw-log-ts-");

describe("logger timestamp format", () => {
  let logPath = "";

  beforeAll(async () => {
    await logPathTracker.setup();
  });

  beforeEach(() => {
    logPath = logPathTracker.nextPath();
    resetLogger();
    setLoggerOverride(null);
  });

  afterEach(() => {
    resetLogger();
    setLoggerOverride(null);
    try {
      fs.rmSync(logPath, { force: true });
    } catch {
      // ignore cleanup errors
    }
  });

  afterAll(async () => {
    await logPathTracker.cleanup();
  });

  it("uses local time format in file logs (not UTC)", () => {
    setLoggerOverride({ level: "info", file: logPath });
    const logger = getLogger();

    // Write a log entry
    logger.info("test-timestamp-format");

    // Read the log file
    const content = fs.readFileSync(logPath, "utf8");
    const lines = content.trim().split("\n");
    const lastLine = JSON.parse(lines[lines.length - 1]);

    // Should use local time format like "2026-02-27T15:04:00.000+08:00"
    // NOT UTC format like "2026-02-27T07:04:00.000Z"
    expect(lastLine.time).toMatch(/^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}\.\d{3}[+-]\d{2}:\d{2}$/);
    expect(lastLine.time).not.toMatch(/Z$/);
  });
});