const marked = require('../../src/marked.js');

describe('Test heading ID functionality', () => {
  it('should add id attribute by default', () => {
    const renderer = new marked.Renderer();
    const slugger = new marked.Slugger();
    const header = renderer.heading('test', 1, 'test', slugger);
    expect(header).toBe('<h1 id="test">test</h1>\n');
  });

  it('should NOT add id attribute when options set false', () => {
    const renderer = new marked.Renderer({ headerIds: false });
    const header = renderer.heading('test', 1, 'test');
    expect(header).toBe('<h1>test</h1>\n');
  });
});

describe('Test slugger functionality', () => {
  it('should use lowercase slug', () => {
    const slugger = new marked.Slugger();
    expect(slugger.slug('Test')).toBe('test');
  });

  it('should be unique to avoid collisions 1280', () => {
    const slugger = new marked.Slugger();
    expect(slugger.slug('test')).toBe('test');
    expect(slugger.slug('test')).toBe('test-1');
    expect(slugger.slug('test')).toBe('test-2');
  });

  it('should be unique when slug ends with number', () => {
    const slugger = new marked.Slugger();
    expect(slugger.slug('test 1')).toBe('test-1');
    expect(slugger.slug('test')).toBe('test');
    expect(slugger.slug('test')).toBe('test-2');
  });

  it('should be unique when slug ends with hyphen number', () => {
    const slugger = new marked.Slugger();
    expect(slugger.slug('foo')).toBe('foo');
    expect(slugger.slug('foo')).toBe('foo-1');
    expect(slugger.slug('foo 1')).toBe('foo-1-1');
    expect(slugger.slug('foo-1')).toBe('foo-1-2');
    expect(slugger.slug('foo')).toBe('foo-2');
  });

  it('should allow non-latin chars', () => {
    const slugger = new marked.Slugger();
    expect(slugger.slug('привет')).toBe('привет');
  });

  it('should remove ampersands 857', () => {
    const slugger = new marked.Slugger();
    expect(slugger.slug('This & That Section')).toBe('this--that-section');
  });

  it('should remove periods', () => {
    const slugger = new marked.Slugger();
    expect(slugger.slug('file.txt')).toBe('filetxt');
  });

  it('should remove html tags', () => {
    const slugger = new marked.Slugger();
    expect(slugger.slug('<em>html</em>')).toBe('html');
  });
});

describe('Test paragraph token type', () => {
  it('should use the "paragraph" type on top level', () => {
    const md = 'A Paragraph.\n\n> A blockquote\n\n- list item\n';

    const tokens = marked.lexer(md);

    expect(tokens[0].type).toBe('paragraph');
    expect(tokens[2].tokens[0].type).toBe('paragraph');
    expect(tokens[3].items[0].tokens[0].type).toBe('text');
  });
});

describe('changeDefaults', () => {
  it('should change global defaults', () => {
    const { defaults, changeDefaults } = require('../../src/defaults');
    expect(defaults.test).toBeUndefined();
    changeDefaults({ test: true });
    expect(require('../../src/defaults').defaults.test).toBe(true);
  });
});

describe('inlineLexer', () => {
  it('should send html to renderer.html', () => {
    const renderer = new marked.Renderer();
    spyOn(renderer, 'html').and.callThrough();
    const md = 'HTML Image: <img alt="MY IMAGE" src="example.png" />';
    marked(md, { renderer });

    expect(renderer.html).toHaveBeenCalledWith('<img alt="MY IMAGE" src="example.png" />');
  });
});

describe('use extension', () => {
  it('should use renderer', () => {
    const extension = {
      renderer: {
        paragraph(text) {
          return 'extension';
        }
      }
    };
    spyOn(extension.renderer, 'paragraph').and.callThrough();
    marked.use(extension);
    const html = marked('text');
    expect(extension.renderer.paragraph).toHaveBeenCalledWith('text');
    expect(html).toBe('extension');
  });

  it('should use tokenizer', () => {
    const extension = {
      tokenizer: {
        paragraph(text) {
          return {
            type: 'paragraph',
            raw: text,
            text: 'extension'
          };
        }
      }
    };
    spyOn(extension.tokenizer, 'paragraph').and.callThrough();
    marked.use(extension);
    const html = marked('text');
    expect(extension.tokenizer.paragraph).toHaveBeenCalledWith('text');
    expect(html).toBe('<p>extension</p>\n');
  });

  it('should use options from extension', () => {
    const extension = {
      headerIds: false
    };
    marked.use(extension);
    const html = marked('# heading');
    expect(html).toBe('<h1>heading</h1>\n');
  });

  it('should use last extension function and not override others', () => {
    const extension1 = {
      renderer: {
        paragraph(text) {
          return 'extension1 paragraph\n';
        },
        html(html) {
          return 'extension1 html\n';
        }
      }
    };
    const extension2 = {
      renderer: {
        paragraph(text) {
          return 'extension2 paragraph\n';
        }
      }
    };
    marked.use(extension1);
    marked.use(extension2);
    const html = marked(`
paragraph

<html />

# heading
`);
    expect(html).toBe('extension2 paragraph\nextension1 html\n<h1 id="heading">heading</h1>\n');
  });

  it('should get options with this.options', () => {
    const extension = {
      renderer: {
        heading: () => {
          return this.options ? 'arrow options\n' : 'arrow no options\n';
        },
        html: function() {
          return this.options ? 'function options\n' : 'function no options\n';
        },
        paragraph() {
          return this.options ? 'shorthand options\n' : 'shorthand no options\n';
        }
      }
    };
    marked.use(extension);
    const html = marked(`
# heading

<html />

paragraph
`);
    expect(html).toBe('arrow no options\nfunction options\nshorthand options\n');
  });
});