import {TYPE_WORD, TYPE_TAG, TYPE_ATTR_NAME, TYPE_ATTR_VALUE, TYPE_SPACE, TYPE_NEW_LINE} from '../src/Token'
import { createLexer } from '../src/lexer'

const TYPE = {
  WORD: TYPE_WORD,
  TAG: TYPE_TAG,
  ATTR_NAME: TYPE_ATTR_NAME,
  ATTR_VALUE: TYPE_ATTR_VALUE,
  SPACE: TYPE_SPACE,
  NEW_LINE: TYPE_NEW_LINE,
};

const tokenize = input => (createLexer(input).tokenize());
const tokenizeEscape = input => (createLexer(input, { enableEscapeTags: true }).tokenize());

describe('lexer', () => {
  const expectOutput = (output, tokens) => {
    expect(tokens.length).toBe(output.length);
    expect(tokens).toBeInstanceOf(Array);
    tokens.forEach((token, idx) => {
      expect(token).toBeInstanceOf(Object);
      expect(token.type).toEqual(output[idx][0]);
      expect(token.value).toEqual(output[idx][1]);
    });
  };

  test('single tag', () => {
    const input = '[SingleTag]';
    const tokens = tokenize(input);
    const output = [
      [TYPE.TAG, 'SingleTag', '0', '0'],
    ];

    expectOutput(output, tokens);
  });

  test('single tag with params', () => {
    const input = '[user=111]';
    const tokens = tokenize(input);
    const output = [
      [TYPE.TAG, 'user', '0', '0'],
      [TYPE.ATTR_VALUE, '111', '0', '0'],
    ];

    expectOutput(output, tokens);
  });

  test('single tag with spaces', () => {
    const input = '[Single Tag]';
    const tokens = tokenize(input);

    const output = [
      [TYPE.TAG, 'Single Tag', '0', '0'],
    ];

    expectOutput(output, tokens);
  });

  test('string with quotemarks', () => {
    const input = '"Someone Like You" by Adele';
    const tokens = tokenize(input);

    const output = [
      [TYPE.WORD, '"Someone', '0', '0'],
      [TYPE.SPACE, ' ', '8', '0'],
      [TYPE.WORD, 'Like', '8', '0'],
      [TYPE.SPACE, ' ', '13', '0'],
      [TYPE.WORD, 'You"', '13', '0'],
      [TYPE.SPACE, ' ', '18', '0'],
      [TYPE.WORD, 'by', '18', '0'],
      [TYPE.SPACE, ' ', '21', '0'],
      [TYPE.WORD, 'Adele', '21', '0'],
    ];

    expectOutput(output, tokens);
  });

  test('tags in brakets', () => {
    const input = '[ [h1]G[/h1] ]';
    const tokens = tokenize(input);

    const output = [
      [TYPE.WORD, '[', '0', '0'],
      [TYPE.SPACE, ' ', '1', '0'],
      [TYPE.TAG, 'h1', '2', '0'],
      [TYPE.WORD, 'G', '1', '0'],
      [TYPE.TAG, '/h1', '7', '0'],
      [TYPE.SPACE, ' ', '12', '0'],
      [TYPE.WORD, ']', '7', '0'],
    ];

    expectOutput(output, tokens);
  });

  test('tag as param', () => {
    const input = '[color="#ff0000"]Text[/color]';
    const tokens = tokenize(input);
    const output = [
      [TYPE.TAG, 'color', '0', '0'],
      [TYPE.ATTR_VALUE, '#ff0000', '6', '0'],
      [TYPE.WORD, 'Text', '17', '0'],
      [TYPE.TAG, '/color', '21', '0'],
    ];

    expectOutput(output, tokens);
  });

  test('tag with quotemark params with spaces', () => {
    const input = '[url text="Foo Bar" text2="Foo Bar 2"]Text[/url]';
    const tokens = tokenize(input);
    const output = [
      [TYPE.TAG, 'url', '0', '0'],
      [TYPE.ATTR_NAME, 'text', '4', '0'],
      [TYPE.ATTR_VALUE, 'Foo Bar', '9', '0'],
      [TYPE.ATTR_NAME, 'text2', '4', '0'],
      [TYPE.ATTR_VALUE, 'Foo Bar 2', '9', '0'],
      [TYPE.WORD, 'Text', '20', '0'],
      [TYPE.TAG, '/url', '24', '0'],
    ];

    expectOutput(output, tokens);
  });

  test('tag with escaped quotemark param', () => {
    const input = `[url text="Foo \\"Bar"]Text[/url]`;
    const tokens = tokenize(input);
    const output = [
      [TYPE.TAG, 'url', '0', '0'],
      [TYPE.ATTR_NAME, 'text', '4', '0'],
      [TYPE.ATTR_VALUE, 'Foo "Bar', '9', '0'],
      [TYPE.WORD, 'Text', '22', '0'],
      [TYPE.TAG, '/url', '26', '0'],
    ];

    expectOutput(output, tokens);
  });

  test('tag param without quotemarks', () => {
    const input = '[style color=#ff0000]Text[/style]';
    const tokens = tokenize(input);
    const output = [
      [TYPE.TAG, 'style', '0', '0'],
      [TYPE.ATTR_NAME, 'color', '6', '0'],
      [TYPE.ATTR_VALUE, '#ff0000', '12', '0'],
      [TYPE.WORD, 'Text', '21', '0'],
      [TYPE.TAG, '/style', '25', '0'],
    ];

    expectOutput(output, tokens);
  });

  test('list tag with items', () => {
    const input = `[list]
   [*] Item 1.
   [*] Item 2.
   [*] Item 3.
[/list]`;

    const tokens = tokenize(input);
    const output = [
      [TYPE.TAG, 'list', '0', '0'],
      [TYPE.NEW_LINE, '\n', '6', '0'],
      [TYPE.SPACE, '   ', '0', '1'],
      [TYPE.TAG, '*', '3', '1'],
      [TYPE.SPACE, ' ', '6', '1'],
      [TYPE.WORD, 'Item', '7', '1'],
      [TYPE.SPACE, ' ', '11', '1'],
      [TYPE.WORD, '1.', '11', '1'],
      [TYPE.NEW_LINE, '\n', '14', '1'],
      [TYPE.SPACE, '   ', '0', '2'],
      [TYPE.TAG, '*', '3', '2'],
      [TYPE.SPACE, ' ', '6', '2'],
      [TYPE.WORD, 'Item', '14', '1'],
      [TYPE.SPACE, ' ', '11', '2'],
      [TYPE.WORD, '2.', '11', '2'],
      [TYPE.NEW_LINE, '\n', '14', '2'],
      [TYPE.SPACE, '   ', '0', '3'],
      [TYPE.TAG, '*', '3', '3'],
      [TYPE.SPACE, ' ', '6', '3'],
      [TYPE.WORD, 'Item', '14', '2'],
      [TYPE.SPACE, ' ', '11', '3'],
      [TYPE.WORD, '3.', '11', '3'],
      [TYPE.NEW_LINE, '\n', '14', '3'],
      [TYPE.TAG, '/list', '0', '4'],
    ];

    expectOutput(output, tokens);
  });

  test('bad tags as texts', () => {
    const inputs = [
      '[]',
      '[=]',
      '![](image.jpg)',
      'x html([a. title][, alt][, classes]) x',
      '[/y]',
      '[sc',
      '[sc / [/sc]',
      '[sc arg="val',
    ];

    const asserts = [
      [
        [TYPE.WORD, '[', '0', '0'],
        [TYPE.WORD, ']', '0', '0']
      ],
      [
        [TYPE.WORD, '[', '0', '0'],
        [TYPE.WORD, '=]', '0', '0']
      ],
      [
        [TYPE.WORD, '!', '0', '0'],
        [TYPE.WORD, '[', '1', '0'],
        [TYPE.WORD, ']', '1', '0'],
        [TYPE.WORD, '(image.jpg)', '1', '0'],
      ],
      [
        [TYPE.WORD, 'x', '0', '0'],
        [TYPE.SPACE, ' ', '1', '0'],
        [TYPE.WORD, 'html(', '1', '0'],
        [TYPE.TAG, 'a. title', '7', '0'],
        [TYPE.TAG, ', alt', '17', '0'],
        [TYPE.TAG, ', classes', '24', '0'],
        [TYPE.WORD, ')', '7', '0'],
        [TYPE.SPACE, ' ', '36', '0'],
        [TYPE.WORD, 'x', '36', '0'],
      ],
      [
        [TYPE.TAG, '/y', '0', '0']
      ],
      [
        [TYPE.WORD, '[', '0', '0'],
        [TYPE.WORD, 'sc', '0', '0']
      ],
      [
        // [sc /
        [TYPE.WORD, '[', '0', '0'],
        [TYPE.WORD, 'sc', '0', '0'],
        [TYPE.SPACE, ' ', '0', '0'],
        [TYPE.WORD, '/', '0', '0'],
        [TYPE.SPACE, ' ', '0', '0'],
        [TYPE.TAG, '/sc', '0', '0']
      ],
      [
        [TYPE.WORD, '[', '0', '0'],
        [TYPE.WORD, 'sc', '0', '0'],
        [TYPE.SPACE, ' ', '0', '0'],
        [TYPE.WORD, 'arg="val', '0', '0'],
      ]
    ];

    inputs.forEach((input, idx) => {
      const tokens = tokenize(input);
      const output = asserts[idx];

      expectOutput(output, tokens);
    });
  });

  test('bad unclosed tag', () => {
    const input = `[Finger Part A [Finger]`;
    const tokens = tokenize(input);
    const output = [
      [TYPE.WORD, '[', '0', '0'],
      [TYPE.WORD, 'Finger', '0', '0'],
      [TYPE.SPACE, ' ', '0', '0'],
      [TYPE.WORD, 'Part', '0', '0'],
      [TYPE.SPACE, ' ', '0', '0'],
      [TYPE.WORD, 'A', '0', '0'],
      [TYPE.SPACE, ' ', '0', '0'],
      [TYPE.TAG, 'Finger', '0', '0']
    ];

    expectOutput(output, tokens);
  });

  test('no close tag', () => {
    const input = '[Finger Part A';
    const tokens = tokenize(input);
    const output = [
      [TYPE.WORD, '[', '0', '0'],
      [TYPE.WORD, 'Finger', '0', '0'],
      [TYPE.SPACE, ' ', '0', '0'],
      [TYPE.WORD, 'Part', '0', '0'],
      [TYPE.SPACE, ' ', '0', '0'],
      [TYPE.WORD, 'A', '0', '0'],
    ];

    expectOutput(output, tokens);
  });

  test('escaped tag', () => {
    const input = '\\[b\\]test\\[';
    const tokens = tokenizeEscape(input);

    const output = [
      [TYPE.WORD, '[', '0', '0'],
      [TYPE.WORD, 'b', '0', '0'],
      [TYPE.WORD, ']', '0', '0'],
      [TYPE.WORD, 'test', '0', '0'],
      [TYPE.WORD, '[', '0', '0'],
    ];

    expectOutput(output, tokens);
  });

  test('escaped tag and escaped backslash', () => {
    const input = '\\\\\\[b\\\\\\]test\\\\\\[/b\\\\\\]';
    const tokens = tokenizeEscape(input);
    const output = [
      [TYPE.WORD, '\\', '0', '0'],
      [TYPE.WORD, '[', '0', '0'],
      [TYPE.WORD, 'b', '0', '0'],
      [TYPE.WORD, '\\', '0', '0'],
      [TYPE.WORD, ']', '0', '0'],
      [TYPE.WORD, 'test', '0', '0'],
      [TYPE.WORD, '\\', '0', '0'],
      [TYPE.WORD, '[', '0', '0'],
      [TYPE.WORD, '/b', '0', '0'],
      [TYPE.WORD, '\\', '0', '0'],
      [TYPE.WORD, ']', '0', '0'],
    ];

    expectOutput(output, tokens);
  });

  test('bad closed tag with escaped backslash', () => {
    const input = `[b]test[\\b]`;
    const tokens = tokenizeEscape(input);
    const output = [
      [TYPE.TAG, 'b', '0', '3'],
      [TYPE.WORD, 'test', '0', '7'],
      [TYPE.WORD, '[', '0', '8'],
      [TYPE.WORD, '\\', '0', '9'],
      [TYPE.WORD, 'b]', '0', '11'],
    ];

    expectOutput(output, tokens);
  });

  describe('html', () => {
    const tokenizeHTML = input => createLexer(input, { openTag: '<', closeTag: '>' }).tokenize();

    test('normal attributes', () => {
      const content = `<button id="test0" class="value0" title="value1">class="value0" title="value1"</button>`;
      const tokens = tokenizeHTML(content);
      const output = [
        [TYPE.TAG, 'button', 2, 0],
        [TYPE.ATTR_NAME, 'id', 2, 0],
        [TYPE.ATTR_VALUE, 'test0', 2, 0],
        [TYPE.ATTR_NAME, 'class', 2, 0],
        [TYPE.ATTR_VALUE, 'value0', 2, 0],
        [TYPE.ATTR_NAME, 'title', 2, 0],
        [TYPE.ATTR_VALUE, 'value1', 2, 0],
        [TYPE.WORD, "class=\"value0\"", 2, 0],
        [TYPE.SPACE, " ", 2, 0],
        [TYPE.WORD, "title=\"value1\"", 2, 0],
        [TYPE.TAG, '/button', 2, 0]
      ];

      expectOutput(output, tokens);
    });

    test('attributes with no quotes or value', () => {
      const content = `<button id="test1" class=value2 disabled>class=value2 disabled</button>`;
      const tokens = tokenizeHTML(content);
      const output = [
        [TYPE.TAG, 'button', 2, 0],
        [TYPE.ATTR_NAME, 'id', 2, 0],
        [TYPE.ATTR_VALUE, 'test1', 2, 0],
        [TYPE.ATTR_NAME, 'class', 2, 0],
        [TYPE.ATTR_VALUE, 'value2', 2, 0],
        [TYPE.ATTR_VALUE, 'disabled', 2, 0],
        [TYPE.WORD, "class=value2", 2, 0],
        [TYPE.SPACE, " ", 2, 0],
        [TYPE.WORD, "disabled", 2, 0],
        [TYPE.TAG, '/button', 2, 0]
      ];

      expectOutput(output, tokens);
    });

    test('attributes with no space between them. No valid, but accepted by the browser', () => {
      const content = `<button id="test2" class="value4"title="value5">class="value4"title="value5"</button>`;
      const tokens = tokenizeHTML(content);
      const output = [
        [TYPE.TAG, 'button', 2, 0],
        [TYPE.ATTR_NAME, 'id', 2, 0],
        [TYPE.ATTR_VALUE, 'test2', 2, 0],
        [TYPE.ATTR_NAME, 'class', 2, 0],
        [TYPE.ATTR_VALUE, 'value4', 2, 0],
        [TYPE.ATTR_NAME, 'title', 2, 0],
        [TYPE.ATTR_VALUE, 'value5', 2, 0],
        [TYPE.WORD, "class=\"value4\"title=\"value5\"", 2, 0],
        [TYPE.TAG, '/button', 2, 0]
      ];

      expectOutput(output, tokens);
    });

    test.skip('style tag', () => {
      const content = `<style type="text/css">
<!--
p{font-family:geneva,helvetica,arial,"lucida sans",sans-serif}
p{font-size:10pt}
p{color:#333}
span{font-family:geneva,helvetica,arial,"lucida sans",sans-serif}
span{font-size:10pt}
.sp2{font-size:2px}
div{font-family:geneva,helvetica,arial,"lucida sans",sans-serif}
div{font-size:10pt}
div.sitelinks{padding:0px 10px 0px 10px;font-size:9pt}
input{font-family:geneva,helvetica,arial,"lucida sans",sans-serif}
input{padding:0px;margin:0px;font-size:9pt}
input.medium{width:100px;height:18px}
input.buttonred{cursor:hand;font-family:verdana;background:#d12124;color:#fff;height:1.4em;font-weight:bold;font-size:9pt;padding:0px 2px;margin:0px;border:0px none #000}
-->
</style>`
    const tokens = tokenizeHTML(content);
    const output = [];

    expectOutput(output, tokens);
    });

    test.skip('script tag', () => {
      const content = `<script language="JavaScript" type="text/javascript">
		<!--//
		if ((navigator.platform=='MacPPC')&&(navigator.appVersion.substr(17,8) != "MSIE 5.0")) {document.write('<LINK rel="stylesheet" href="styles/main-3.css" type="text/css">')}
		if (screen.width > 1200)	{document.write('<LINK rel="stylesheet" href="styles/main-3.css" type="text/css">')}
		//-->
	</script>`;
      const tokens = tokenizeHTML(content);
      const output = [];

      expectOutput(output, tokens);
    })
  })
});
