import { expect, tap } from '@git.zone/tstest/tapbundle';
import type * as smartnpm from '@push.rocks/smartnpm';
import * as smartupdate from '../ts/index.js';

const createMockedSmartUpdate = (versionsArg: Record<string, string>) => {
  const checkedPackages: string[] = [];
  const testSmartUpdate = new smartupdate.SmartUpdate({
    logLevel: 'SILENT',
    noColor: true,
    cacheDuration: { minutes: 30 },
    cacheStore: { storeType: 'ephemeral' },
  });

  testSmartUpdate.npmRegistry.getPackageInfo = async (packageNameArg: string) => {
    checkedPackages.push(packageNameArg);
    const version = versionsArg[packageNameArg];
    if (!version) {
      throw new Error(`Package not found: ${packageNameArg}`);
    }
    return {
      name: packageNameArg,
      version,
    } as unknown as smartnpm.NpmPackage;
  };

  return { testSmartUpdate, checkedPackages };
};

tap.test('backward compatibility: should create an instance of SmartUpdate', async () => {
  const { testSmartUpdate } = createMockedSmartUpdate({ lodash: '4.17.21' });
  expect(testSmartUpdate).toBeInstanceOf(smartupdate.SmartUpdate);
});

tap.test('backward compatibility: should check for a npm module using old API', async () => {
  const { testSmartUpdate } = createMockedSmartUpdate({ lodash: '4.17.21' });
  const result = await testSmartUpdate.check('lodash', '1.0.5');
  expect(result).toBeTrue();
});

tap.test('modern API: checkForUpdate should return rich result object', async () => {
  const { testSmartUpdate } = createMockedSmartUpdate({ lodash: '4.17.21' });
  const result = await testSmartUpdate.checkForUpdate({
    packageName: 'lodash',
    currentVersion: '1.0.0',
    cacheStrategy: 'never',
  });

  expect(result).toBeTypeOf('object');
  expect(result.status).toEqual('update-available');
  expect(result.packageName).toEqual('lodash');
  expect(result.currentVersion).toEqual('1.0.0');
  expect(result.latestVersion).toEqual('4.17.21');
  expect(result.checkTime).toBeInstanceOf(Date);
  expect(result.cacheHit).toBeFalse();
});

tap.test('modern API: checkForUpdate with up-to-date version', async () => {
  const { testSmartUpdate } = createMockedSmartUpdate({ '@push.rocks/smartversion': '3.1.0' });
  const result = await testSmartUpdate.checkForUpdate({
    packageName: '@push.rocks/smartversion',
    currentVersion: '999.999.999',
    cacheStrategy: 'never',
  });

  expect(result.status).toEqual('up-to-date');
  expect(result.latestVersion).toEqual('3.1.0');
});

tap.test('modern API: getLatestVersion utility method', async () => {
  const { testSmartUpdate } = createMockedSmartUpdate({ lodash: '4.17.21' });
  const latestVersion = await testSmartUpdate.getLatestVersion('lodash');
  expect(latestVersion).toEqual('4.17.21');
});

tap.test('modern API: error handling for non-existent package', async () => {
  const { testSmartUpdate } = createMockedSmartUpdate({});
  const result = await testSmartUpdate.checkForUpdate({
    packageName: 'this-package-definitely-does-not-exist-12345',
    currentVersion: '1.0.0',
    cacheStrategy: 'never',
  });

  expect(result.status).toEqual('error');
  expect(result.error).toBeInstanceOf(smartupdate.PackageNotFoundError);
});

tap.test('modern API: invalid versions are reported before registry access', async () => {
  const { testSmartUpdate, checkedPackages } = createMockedSmartUpdate({ lodash: '4.17.21' });
  const result = await testSmartUpdate.checkForUpdate({
    packageName: 'lodash',
    currentVersion: 'not-a-version',
    cacheStrategy: 'never',
  });

  expect(result.status).toEqual('error');
  expect(result.error).toBeInstanceOf(smartupdate.InvalidVersionError);
  expect(checkedPackages).toHaveLength(0);
});

tap.test('modern API: invalid package names are reported before registry access', async () => {
  const { testSmartUpdate, checkedPackages } = createMockedSmartUpdate({ lodash: '4.17.21' });
  const result = await testSmartUpdate.checkForUpdate({
    packageName: 'invalid package name',
    currentVersion: '1.0.0',
    cacheStrategy: 'never',
  });

  expect(result.status).toEqual('error');
  expect(result.error).toBeInstanceOf(smartupdate.InvalidPackageNameError);
  expect(checkedPackages).toHaveLength(0);
});

tap.test('modern API: caches update-available results for time-based checks', async () => {
  const { testSmartUpdate, checkedPackages } = createMockedSmartUpdate({ express: '5.0.0' });

  const result1 = await testSmartUpdate.checkForUpdate({
    packageName: 'express',
    currentVersion: '1.0.0',
    cacheStrategy: 'time-based',
  });
  const result2 = await testSmartUpdate.checkForUpdate({
    packageName: 'express',
    currentVersion: '1.0.0',
    cacheStrategy: 'time-based',
  });

  expect(result1.status).toEqual('update-available');
  expect(result2.status).toEqual('check-skipped');
  expect(result2.cacheHit).toBeTrue();
  expect(result2.latestVersion).toEqual('5.0.0');
  expect(checkedPackages).toHaveLength(1);
});

tap.test('modern API: caches up-to-date results for time-based checks', async () => {
  const { testSmartUpdate, checkedPackages } = createMockedSmartUpdate({ express: '5.0.0' });

  const result1 = await testSmartUpdate.checkForUpdate({
    packageName: 'express',
    currentVersion: '5.0.0',
    cacheStrategy: 'time-based',
  });
  const result2 = await testSmartUpdate.checkForUpdate({
    packageName: 'express',
    currentVersion: '5.0.0',
    cacheStrategy: 'time-based',
  });

  expect(result1.status).toEqual('up-to-date');
  expect(result2.status).toEqual('check-skipped');
  expect(result2.cacheHit).toBeTrue();
  expect(result2.latestVersion).toEqual('5.0.0');
  expect(checkedPackages).toHaveLength(1);
});

tap.test('modern API: cache entries are scoped to the checked current version', async () => {
  const { testSmartUpdate, checkedPackages } = createMockedSmartUpdate({ express: '5.0.0' });

  const result1 = await testSmartUpdate.checkForUpdate({
    packageName: 'express',
    currentVersion: '1.0.0',
    cacheStrategy: 'time-based',
  });
  const result2 = await testSmartUpdate.checkForUpdate({
    packageName: 'express',
    currentVersion: '5.0.0',
    cacheStrategy: 'time-based',
  });

  expect(result1.status).toEqual('update-available');
  expect(result2.status).toEqual('up-to-date');
  expect(result2.cacheHit).toBeFalse();
  expect(checkedPackages).toHaveLength(2);
});

tap.test('modern API: checkForCli returns true for cached known updates', async () => {
  const { testSmartUpdate, checkedPackages } = createMockedSmartUpdate({ 'my-cli': '2.0.0' });

  const result1 = await testSmartUpdate.checkForCli('my-cli', '1.0.0');
  const result2 = await testSmartUpdate.checkForCli('my-cli', '1.0.0');

  expect(result1).toBeTrue();
  expect(result2).toBeTrue();
  expect(checkedPackages).toHaveLength(1);
});

tap.test('cache manager: clears package-specific and complete cache data', async () => {
  const cacheManager = new smartupdate.UpdateCacheManager({
    durationMs: 60_000,
    storeType: 'ephemeral',
  });

  await cacheManager.setCached('one', cacheManager.createCacheStatus('1.0.0'));
  await cacheManager.setCached('two', cacheManager.createCacheStatus('2.0.0'));

  await cacheManager.clearCache('one');
  expect(await cacheManager.getCached('one')).toBeNull();
  expect(await cacheManager.getCached('two')).toBeTypeOf('object');

  await cacheManager.clearCache();
  expect(await cacheManager.getCached('two')).toBeNull();
});

tap.test('modern API: exports all runtime classes and constants', async () => {
  expect(smartupdate.SmartUpdate).toBeTypeOf('function');
  expect(smartupdate.UpdateCacheManager).toBeTypeOf('function');
  expect(smartupdate.UpdateNotifier).toBeTypeOf('function');
  expect(smartupdate.RegistryUnavailableError).toBeTypeOf('function');
  expect(smartupdate.PackageNotFoundError).toBeTypeOf('function');
  expect(smartupdate.InvalidVersionError).toBeTypeOf('function');
  expect(smartupdate.InvalidPackageNameError).toBeTypeOf('function');
  expect(smartupdate.LOG_LEVELS).toBeTypeOf('object');
});

export default tap.start();