const { RuleTester } = require('eslint');
const rule = require('./no-index-files');

const ruleTester = new RuleTester({
  parser: require.resolve('@typescript-eslint/parser'),
  parserOptions: {
    ecmaVersion: 2020,
    sourceType: 'module',
    ecmaFeatures: {
      jsx: false,
    },
  },
});

ruleTester.run('no-index-files', rule, {
  valid: [
    // Regular file in domain
    {
      filename: '/path/to/core/domain/user/User.ts',
      code: "export class User {}",
    },
    // Regular file in application
    {
      filename: '/path/to/core/application/user/CreateUser.ts',
      code: "export class CreateUser {}",
    },
    // Regular file in shared
    {
      filename: '/path/to/core/shared/ValueObject.ts',
      code: "export class ValueObject {}",
    },
    // Regular file in ports
    {
      filename: '/path/to/core/ports/UserRepository.ts',
      code: "export interface UserRepository {}",
    },
    // File with index in the middle of the path
    {
      filename: '/path/to/core/domain/user/index/User.ts',
      code: "export class User {}",
    },
    // File with index in the name but not at the end
    {
      filename: '/path/to/core/domain/user/indexHelper.ts',
      code: "export class IndexHelper {}",
    },
    // Root index.ts is allowed
    {
      filename: '/path/to/core/index.ts',
      code: "export * from './domain';",
    },
    // File with index.ts in the middle of the path
    {
      filename: '/path/to/core/domain/index/User.ts',
      code: "export class User {}",
    },
  ],

  invalid: [
    // index.ts in domain
    {
      filename: '/path/to/core/domain/user/index.ts',
      code: "export * from './User';",
      errors: [
        {
          messageId: 'indexFile',
        },
      ],
    },
    // index.ts in application
    {
      filename: '/path/to/core/application/user/index.ts',
      code: "export * from './CreateUser';",
      errors: [
        {
          messageId: 'indexFile',
        },
      ],
    },
    // index.ts in shared
    {
      filename: '/path/to/core/shared/index.ts',
      code: "export * from './ValueObject';",
      errors: [
        {
          messageId: 'indexFile',
        },
      ],
    },
    // index.ts in ports
    {
      filename: '/path/to/core/ports/index.ts',
      code: "export * from './UserRepository';",
      errors: [
        {
          messageId: 'indexFile',
        },
      ],
    },
    // index.ts with Windows path separator
    {
      filename: 'C:\\path\\to\\core\\domain\\user\\index.ts',
      code: "export * from './User';",
      errors: [
        {
          messageId: 'indexFile',
        },
      ],
    },
    // index.ts at the start of path
    {
      filename: 'index.ts',
      code: "export * from './domain';",
      errors: [
        {
          messageId: 'indexFile',
        },
      ],
    },
    // index.ts in nested directory
    {
      filename: '/path/to/core/domain/user/profile/index.ts',
      code: "export * from './Profile';",
      errors: [
        {
          messageId: 'indexFile',
        },
      ],
    },
  ],
});