import { parseSpec } from '../src/utils/spec-parser.js';

describe('Spec Parser', () => {
  describe('JSON parsing', () => {
    it('should parse valid JSON spec', () => {
      const content = JSON.stringify({
        name: 'test-cli',
        version: '1.0.0',
        description: 'A test CLI',
        commands: [{ name: 'test', description: 'Test command' }],
      });

      const result = parseSpec({ content, format: 'json' });

      expect(result.success).toBe(true);
      expect(result.spec).toBeDefined();
      expect(result.spec?.name).toBe('test-cli');
      expect(result.spec?.version).toBe('1.0.0');
    });

    it('should detect JSON format automatically', () => {
      const content = '{"name": "test", "version": "1.0.0", "description": "test", "commands": [{"name": "cmd", "description": "a command"}]}';
      const result = parseSpec({ content, format: 'auto' });

      expect(result.success).toBe(true);
    });
  });

  describe('YAML parsing', () => {
    it('should parse valid YAML spec', () => {
      const content = `
name: test-cli
version: 1.0.0
description: A test CLI
commands:
  - name: test
    description: Test command
`;

      const result = parseSpec({ content, format: 'yaml' });

      expect(result.success).toBe(true);
      expect(result.spec).toBeDefined();
      expect(result.spec?.name).toBe('test-cli');
    });

    it('should detect YAML format automatically', () => {
      const content = 'name: test\nversion: 1.0.0\ndescription: test\ncommands:\n  - name: cmd\n    description: a command';
      const result = parseSpec({ content, format: 'auto' });

      expect(result.success).toBe(true);
    });
  });

  describe('Error handling', () => {
    it('should fail on invalid JSON', () => {
      const content = '{invalid json}';
      const result = parseSpec({ content, format: 'json' });

      expect(result.success).toBe(false);
      expect(result.errors).toBeDefined();
      expect(result.errors?.length).toBeGreaterThan(0);
    });

    it('should fail on missing required fields', () => {
      const content = JSON.stringify({
        name: 'test',
        commands: [],
      });

      const result = parseSpec({ content, format: 'json' });

      expect(result.success).toBe(false);
      expect(result.errors?.some((e) => e.includes('version'))).toBe(true);
    });

    it('should fail on empty commands array', () => {
      const content = JSON.stringify({
        name: 'test',
        version: '1.0.0',
        description: 'test',
        commands: [],
      });

      const result = parseSpec({ content, format: 'json' });

      expect(result.success).toBe(false);
      expect(result.errors?.some((e) => e.includes('command'))).toBe(true);
    });

    it('should fail when file does not exist', () => {
      const result = parseSpec({ filePath: '/nonexistent/path/spec.yaml' });

      expect(result.success).toBe(false);
      expect(result.errors?.some((e) => e.includes('not found'))).toBe(true);
    });

    it('should fail when no content or file path provided', () => {
      const result = parseSpec({});

      expect(result.success).toBe(false);
      expect(result.errors?.some((e) => e.includes('filePath or content'))).toBe(true);
    });
  });
});