import { formatTemplateContent } from '../templateformatter.js';

describe('formatTemplateContent', () => {
  it('should return an error when content is missing', () => {
    expect(formatTemplateContent()).toEqual({
      error: 'Content is required and must be a string.',
      code: 400,
    });
  });

  it('should return an error when content is not a string', () => {
    expect(formatTemplateContent({ foo: 'bar' })).toEqual({
      error: 'Content is required and must be a string.',
      code: 400,
    });
  });

  it('should return empty content unchanged', () => {
    expect(formatTemplateContent('')).toEqual({ content: '' });
    expect(formatTemplateContent('   ')).toEqual({ content: '' });
  });

  it('should format custom XML tags', () => {
    const input = '<Container><Flex vertical="true"><Title1>Hello</Title1></Flex></Container>';
    const result = formatTemplateContent(input);

    expect(result.content).toBe(`<Container>
  <Flex vertical="true">
    <Title1>Hello</Title1>
  </Flex>
</Container>`);
  });

  it('should format XML while preserving EJS blocks', () => {
    const input =
      '<Container><Flex vertical="true"><Title1>Hello</Title1><% if (name) { %><Text><%= name %></Text><% } %></Flex></Container>';
    const result = formatTemplateContent(input);

    expect(result.content).toContain('<Container>');
    expect(result.content).toContain('<% if (name) { %>');
    expect(result.content).toContain('<%= name %>');
    expect(result.content).toContain('<% } %>');
    expect(result.content).toContain('<Text>');
  });

  it('should leave EJS comments unchanged', () => {
    const input = '<Container><%# comment %></Container>';
    const result = formatTemplateContent(input);

    expect(result.content).toContain('<%# comment %>');
  });
});