import { describe, expect, test } from 'bun:test';
import { auditCliVersion, compareSemver } from './cli-version';

describe('compareSemver', () => {
  test.each([
    ['1.0.0', '1.0.0', 0],
    ['1.0.0', '1.0.1', -1],
    ['1.0.1', '1.0.0', 1],
    ['1.0.0', '2.0.0', -1],
    ['2.0.0', '1.9.9', 1],
    ['v1.0.0', '1.0.0', 0],
    ['1.0.0-beta.1', '1.0.0', 0], // pre-release stripped
    ['1.0.0+build.42', '1.0.0', 0], // build metadata stripped
  ])('compareSemver(%s, %s) = %s', (a, b, expected) => {
    expect(compareSemver(a, b)).toBe(expected);
  });
});

describe('auditCliVersion', () => {
  test('no finding when running version equals latest', async () => {
    const result = await auditCliVersion({
      installedVersion: '0.1.5',
      fetcher: async () => '0.1.5',
    });
    expect(result).toEqual([]);
  });

  test('no finding when running ahead of latest (dev build)', async () => {
    const result = await auditCliVersion({
      installedVersion: '0.2.0-dev',
      fetcher: async () => '0.1.5',
    });
    expect(result).toEqual([]);
  });

  test('drift finding when published is newer', async () => {
    const result = await auditCliVersion({
      installedVersion: '0.1.5',
      fetcher: async () => '0.1.7',
    });

    expect(result).toHaveLength(1);
    expect(result[0]).toMatchObject({
      category: 'cli_version',
      severity: 'drift',
      code: 'cli_version_drift',
      subject: 'system',
    });
    expect(result[0].message).toContain('0.1.5');
    expect(result[0].message).toContain('0.1.7');
  });

  test('a registry we could not reach is unmeasured, not up-to-date', async () => {
    // Was `expect(result).toEqual([])`. "I could not ask npm" and "you are on
    // the latest" are different statements and rendered identically.
    const result = await auditCliVersion({
      installedVersion: '0.1.5',
      fetcher: async () => null,
    });
    expect(result).toHaveLength(1);
    expect(result[0]?.severity).toBe('unmeasured');
    expect(result[0]?.code).toBe('cli_version_unmeasured');
  });
});