/* eslint max-len:0 */

import React from 'react';
import { shallow } from 'enzyme';
import markdownSyntax from 'markup-it/syntaxes/markdown';
import htmlSyntax from 'markup-it/syntaxes/html';
import MarkitupReactRenderer from '../MarkitupReactRenderer';

describe('MarkitupReactRenderer', () => {

  describe('basics', () => {
    it('should re-render properly after a value and syntax update', () => {
      const component = shallow(
        <MarkitupReactRenderer
            value="# Title"
            syntax={markdownSyntax}
        />
      );
      const tree1 = component.html();
      component.setProps({
        value: '<h1>Title</h1>',
        syntax: htmlSyntax
      });
      const tree2 = component.html();
      expect(tree1).toEqual(tree2);
    });

    it('should not update the parser if syntax didn\'t change', () => {
      const component = shallow(
        <MarkitupReactRenderer
            value="# Title"
            syntax={markdownSyntax}
        />
      );
      const syntax1 = component.instance().props.syntax;
      component.setProps({
        value: '## Title',
      });
      const syntax2 = component.instance().props.syntax;
      expect(syntax1).toEqual(syntax2);
    });
  });

  describe('Markdown rendering', () => {
    describe('General', () => {
      it('should render markdown', () => {
        const value = `
# H1

Text with **bold** & _em_ elements

## H2

* ul item 1
* ul item 2

### H3

1. ol item 1
1. ol item 2
1. ol item 3

#### H4

[link title](http://google.com)

##### H5

![alt text](https://pbs.twimg.com/profile_images/678903331176214528/TQTdqGwD.jpg)

###### H6
`;
        const component = shallow(
          <MarkitupReactRenderer
              value={value}
              syntax={markdownSyntax}
          />
        );
        const tree = component.html();
        expect(tree).toMatchSnapshot();
      });
    });

    describe('Headings', () => {
      for (const heading of [...Array(6).keys()]) {
        it(`should render Heading ${heading + 1}`, () => {
          const value = padStart(' Title', heading + 7, '#')
          const component = shallow(
            <MarkitupReactRenderer
              value={value}
              syntax={markdownSyntax}
            />
          );
          const tree = component.html();
          expect(tree).toMatchSnapshot()
        })
      }
    })

    describe('Lists', () => {
      it('should render lists', () => {
        const value = `
1. ol item 1
1. ol item 2
  * Sublist 1
  * Sublist 2
  * Sublist 3
    1. Sub-Sublist 1
    1. Sub-Sublist 2
    1. Sub-Sublist 3
1. ol item 3
`;
        const component = shallow(
          <MarkitupReactRenderer
              value={value}
              syntax={markdownSyntax}
          />
        );
        const tree = component.html();
        expect(tree).toMatchSnapshot();
      });
    });

    describe('Links', () => {
      it('should render links', () => {
        const value = `
I get 10 times more traffic from [Google] [1] than from [Yahoo] [2] or [MSN] [3].

  [1]: http://google.com/        "Google"
  [2]: http://search.yahoo.com/  "Yahoo Search"
  [3]: http://search.msn.com/    "MSN Search"
`;
        const component = shallow(
          <MarkitupReactRenderer
              value={value}
              syntax={markdownSyntax}
          />
        );
        const tree = component.html();
        expect(tree).toMatchSnapshot();
      });
    });

    describe('Code', () => {
      it('should render code', () => {
        const value = 'Use the `printf()` function.';
        const component = shallow(
          <MarkitupReactRenderer
              value={value}
              syntax={markdownSyntax}
          />
        );
        const tree = component.html();
        expect(tree).toMatchSnapshot();
      });

      it('should render code 2', () => {
        const value = '``There is a literal backtick (`) here.``';
        const component = shallow(
          <MarkitupReactRenderer
              value={value}
              syntax={markdownSyntax}
          />
        );
        const tree = component.html();
        expect(tree).toMatchSnapshot();
      });
    });

    describe('HTML', () => {
      it('should render HTML as is using Markdown', () => {
        const value = `
# Title

<ul>
    <li>Test HTML content</li>
    <li>Testing HTML in Markdown</li>
</ul>
`;
        const component = shallow(
          <MarkitupReactRenderer
              value={value}
              syntax={markdownSyntax}
          />
        );
        const tree = component.html();
        expect(tree).toMatchSnapshot();
      });
    });
  });

  describe('custom elements', () => {
    it('should support custom syntax', () => {
      const value = '';
      const component = shallow(
        <MarkitupReactRenderer
            value={value}
            syntax={markdownSyntax}
        />
      );
      const tree = component.html();
      expect(tree).toMatchSnapshot();
    });
  });

  describe('HTML rendering', () => {
    it('should render HTML', () => {
      const value = '<p>Paragraph with <em>inline</em> element</p>';
      const component = shallow(
        <MarkitupReactRenderer
            value={value}
            syntax={htmlSyntax}
        />
      );
      const tree = component.html();
      expect(tree).toMatchSnapshot();
    });
  });
});