import { getConfig } from './defaults.ts';
import {
  filterConfig,
  getManagerConfig,
  mergeChildConfig,
  removeGlobalConfig,
} from './index.ts';

vi.mock('../modules/datasource/npm/index.ts');
vi.mock('../../config.ts', () => ({ default: {} }));

const defaultConfig = getConfig();

describe('config/index', () => {
  describe('mergeChildConfig(parentConfig, childConfig)', () => {
    it('merges', () => {
      const parentConfig = { ...defaultConfig };
      const childConfig = {
        foo: 'bar',
        rangeStrategy: 'replace',
        lockFileMaintenance: {
          schedule: ['on monday'],
        },
      };
      const config = mergeChildConfig(parentConfig, childConfig);
      expect(config.foo).toBe('bar');
      expect(config.rangeStrategy).toBe('replace');
      expect(config.lockFileMaintenance.schedule).toEqual(['on monday']);
      expect(config.lockFileMaintenance).toMatchObject({
        branchTopic: 'lock-file-maintenance',
        enabled: false,
        schedule: ['on monday'],
      });
    });

    it('merges packageRules', () => {
      const parentConfig = { ...defaultConfig };
      Object.assign(parentConfig, {
        packageRules: [
          { matchPackageNames: ['pkg1'] },
          { matchPackageNames: ['pkg2'] },
        ],
      });
      const childConfig = {
        packageRules: [
          { matchPackageNames: ['pkg3'] },
          { matchPackageNames: ['pkg4'] },
        ],
      };
      const config = mergeChildConfig(parentConfig, childConfig);
      expect(config.packageRules).toMatchObject([
        { matchPackageNames: ['pkg1'] },
        { matchPackageNames: ['pkg2'] },
        { matchPackageNames: ['pkg3'] },
        { matchPackageNames: ['pkg4'] },
      ]);
    });

    it('merges constraints', () => {
      const parentConfig = { ...defaultConfig };
      Object.assign(parentConfig, {
        constraints: {
          node: '>=12',
          npm: '^6.0.0',
        },
      });
      const childConfig = {
        constraints: {
          node: '<15',
        },
      };
      const config = mergeChildConfig(parentConfig, childConfig);
      expect(config.constraints).toEqual({
        node: '<15',
        npm: '^6.0.0',
      });
    });

    it('merges forced options', () => {
      const parentConfig = { ...defaultConfig };
      Object.assign(parentConfig, {
        force: {
          schedule: 'at any time',
        },
      });
      const childConfig = {
        force: {
          constraints: {
            node: '<15',
          },
        },
      };
      const config = mergeChildConfig(parentConfig, childConfig);
      expect(config.force.schedule).toBe('at any time');
      expect(config.force.constraints.node).toBe('<15');
    });

    it('handles null parent packageRules', async () => {
      const parentConfig = { ...defaultConfig };
      Object.assign(parentConfig, {
        packageRules: null,
      });
      const childConfig = {
        packageRules: [{ a: 3 }, { a: 4 }],
      };
      const configParser = await import('./index.ts');
      const config = configParser.mergeChildConfig(parentConfig, childConfig);
      expect(config.packageRules).toHaveLength(2);
    });

    it('handles null child packageRules', () => {
      const parentConfig = { ...defaultConfig };
      parentConfig.packageRules = [
        { matchPackageNames: ['pkg1'] },
        { matchPackageNames: ['pkg2'] },
      ];
      const config = mergeChildConfig(parentConfig, {});
      expect(config.packageRules).toMatchObject([
        { matchPackageNames: ['pkg1'] },
        { matchPackageNames: ['pkg2'] },
      ]);
    });

    it('handles undefined childConfig', () => {
      const parentConfig = { ...defaultConfig };
      const config = mergeChildConfig(parentConfig, undefined);
      expect(config).toMatchObject(parentConfig);
    });

    it('getManagerConfig()', () => {
      const parentConfig = { ...defaultConfig };
      const config = getManagerConfig(parentConfig, 'npm');
      expect(config).toContainEntries([
        [
          'managerFilePatterns',
          [
            '/(^|/)package\\.json$/',
            '/(^|/)pnpm-workspace\\.yaml$/',
            '/(^|/)\\.yarnrc\\.yml$/',
          ],
        ],
      ]);
      expect(getManagerConfig(parentConfig, 'html')).toContainEntries([
        ['managerFilePatterns', ['/\\.html?$/']],
      ]);
    });

    it('filterConfig()', () => {
      const parentConfig = { ...defaultConfig };
      const config = filterConfig(parentConfig, 'pr');
      expect(config).toBeObject();
    });

    it('highest vulnerabilitySeverity maintained when config is vulnerability alert', () => {
      const parentConfig = { ...defaultConfig };
      Object.assign(parentConfig, {
        isVulnerabilityAlert: true,
        vulnerabilitySeverity: 'HIGH',
      });
      const childConfig = {
        vulnerabilitySeverity: 'CRITICAL',
      };
      const config = mergeChildConfig(parentConfig, childConfig);
      expect(config.vulnerabilitySeverity).toBe('CRITICAL');
    });
  });

  describe('removeGlobalConfig()', () => {
    it('removes all global config', () => {
      const filteredConfig = removeGlobalConfig(defaultConfig, false);
      expect(filteredConfig).not.toHaveProperty('onboarding');
      expect(filteredConfig).not.toHaveProperty('binarySource');
      expect(filteredConfig.prHourlyLimit).toBe(2);
    });

    it('retains inherited config', () => {
      const filteredConfig = removeGlobalConfig(defaultConfig, true);
      expect(filteredConfig).toHaveProperty('onboarding');
      expect(filteredConfig).not.toHaveProperty('binarySource');
      expect(filteredConfig.prHourlyLimit).toBe(2);
    });
  });
});