import { describe, it, expect, beforeEach, afterEach } from 'vitest';
import { mkdtempSync, rmSync, readFileSync, existsSync } from 'fs';
import { tmpdir } from 'os';
import { join } from 'path';
import { createLogger } from '../../src/middleware/logging.ts';

describe('middleware/logging', () => {
  let logDir: string;
  let logFile: string;

  beforeEach(() => {
    logDir = mkdtempSync(join(tmpdir(), 'nanodrop-log-test-'));
    logFile = join(logDir, 'test.log');
  });

  afterEach(() => {
    rmSync(logDir, { recursive: true, force: true });
  });

  it('writes AUTH_FAILURE log entry', async () => {
    const logger = createLogger(logFile);
    await logger.authFailure({ ip: '1.2.3.4', userAgent: 'TestAgent/1.0', username: 'admin' });
    const content = readFileSync(logFile, 'utf-8');
    expect(content).toMatch(/AUTH_FAILURE/);
    expect(content).toMatch(/ip=1\.2\.3\.4/);
    expect(content).toMatch(/username="admin"/);
    expect(content).toMatch(/user-agent="TestAgent\/1\.0"/);
  });

  it('writes AUTH_SUCCESS log entry', async () => {
    const logger = createLogger(logFile);
    await logger.authSuccess({ ip: '1.2.3.4', userAgent: 'TestAgent/1.0', username: 'bob' });
    const content = readFileSync(logFile, 'utf-8');
    expect(content).toMatch(/AUTH_SUCCESS/);
    expect(content).toMatch(/username="bob"/);
  });

  it('writes FILE_NOT_FOUND log entry', async () => {
    const logger = createLogger(logFile);
    await logger.fileNotFound({ ip: '5.6.7.8', userAgent: 'curl/7.0', fileId: 'abc123' });
    const content = readFileSync(logFile, 'utf-8');
    expect(content).toMatch(/FILE_NOT_FOUND/);
    expect(content).toMatch(/file_id="abc123"/);
  });

  it('creates log file if it does not exist', async () => {
    expect(existsSync(logFile)).toBe(false);
    const logger = createLogger(logFile);
    await logger.authSuccess({ ip: '1.1.1.1', userAgent: 'x', username: 'u' });
    expect(existsSync(logFile)).toBe(true);
  });

  it('appends multiple entries', async () => {
    const logger = createLogger(logFile);
    await logger.authSuccess({ ip: '1.1.1.1', userAgent: 'a', username: 'u1' });
    await logger.authFailure({ ip: '2.2.2.2', userAgent: 'b', username: 'u2' });
    const lines = readFileSync(logFile, 'utf-8').trim().split('\n');
    expect(lines).toHaveLength(2);
  });
});