import { describe, it, expect } from 'vitest';
import { validateYarnProject, isYarnProject } from '../src/loader/validator';

describe('validateYarnProject', () => {
  it('should validate a minimal valid config', () => {
    const config = {
      projectFileVersion: 4,
      sourceFiles: ['**/*.yarn'],
      baseLanguage: 'en',
    };

    const result = validateYarnProject(config);
    expect(result.valid).toBe(true);
  });

  it('should validate a full config', () => {
    const config = {
      projectFileVersion: 4,
      projectName: 'Test Project',
      authorName: ['Author 1', 'Author 2'],
      sourceFiles: ['**/*.yarn'],
      excludeFiles: ['**/*.backup.yarn'],
      baseLanguage: 'en',
      localisation: {
        'zh-Hans': {
          strings: 'translations/zh-Hans.csv',
          assets: 'translations/zh-Hans/',
        },
      },
      definitions: ['custom.ysls.json'],
      compilerOptions: {
        requireVariableDeclarations: true,
        allowPreviewFeatures: false,
      },
      editorOptions: {
        yarnScriptEditor: { theme: 'dark' },
      },
    };

    const result = validateYarnProject(config);
    expect(result.valid).toBe(true);
  });

  it('should reject missing projectFileVersion', () => {
    const config = {
      sourceFiles: ['**/*.yarn'],
      baseLanguage: 'en',
    };

    const result = validateYarnProject(config);
    expect(result.valid).toBe(false);
    if (!result.valid) {
      expect(result.errors.length).toBeGreaterThan(0);
      expect(result.errors[0].message).toContain('projectFileVersion');
    }
  });

  it('should reject missing sourceFiles', () => {
    const config = {
      projectFileVersion: 4,
      baseLanguage: 'en',
    };

    const result = validateYarnProject(config);
    expect(result.valid).toBe(false);
  });

  it('should reject missing baseLanguage', () => {
    const config = {
      projectFileVersion: 4,
      sourceFiles: ['**/*.yarn'],
    };

    const result = validateYarnProject(config);
    expect(result.valid).toBe(false);
  });

  it('should reject invalid projectFileVersion type', () => {
    const config = {
      projectFileVersion: '4',
      sourceFiles: ['**/*.yarn'],
      baseLanguage: 'en',
    };

    const result = validateYarnProject(config);
    expect(result.valid).toBe(false);
  });

  it('should reject projectFileVersion less than 2', () => {
    const config = {
      projectFileVersion: 1,
      sourceFiles: ['**/*.yarn'],
      baseLanguage: 'en',
    };

    const result = validateYarnProject(config);
    expect(result.valid).toBe(false);
  });

  it('should reject non-array sourceFiles', () => {
    const config = {
      projectFileVersion: 4,
      sourceFiles: '**/*.yarn',
      baseLanguage: 'en',
    };

    const result = validateYarnProject(config);
    expect(result.valid).toBe(false);
  });

  it('should reject additional properties', () => {
    const config = {
      projectFileVersion: 4,
      sourceFiles: ['**/*.yarn'],
      baseLanguage: 'en',
      unknownField: 'value',
    };

    const result = validateYarnProject(config);
    expect(result.valid).toBe(false);
  });

  it('should accept definitions as string', () => {
    const config = {
      projectFileVersion: 4,
      sourceFiles: ['**/*.yarn'],
      baseLanguage: 'en',
      definitions: 'custom.ysls.json',
    };

    const result = validateYarnProject(config);
    expect(result.valid).toBe(true);
  });

  it('should accept definitions as array of strings', () => {
    const config = {
      projectFileVersion: 4,
      sourceFiles: ['**/*.yarn'],
      baseLanguage: 'en',
      definitions: ['custom1.ysls.json', 'custom2.ysls.json'],
    };

    const result = validateYarnProject(config);
    expect(result.valid).toBe(true);
  });
});

describe('isYarnProject', () => {
  it('should return true for valid config', () => {
    const config = {
      projectFileVersion: 4,
      sourceFiles: ['**/*.yarn'],
      baseLanguage: 'en',
    };

    expect(isYarnProject(config)).toBe(true);
  });

  it('should return false for invalid config', () => {
    const config = {
      sourceFiles: ['**/*.yarn'],
      baseLanguage: 'en',
    };

    expect(isYarnProject(config)).toBe(false);
  });
});