var assert = require('assert');
var Utils = require('../src/utils.js').Utils;

var LineByLinePrinter = require('../src/line-by-line-printer.js').LineByLinePrinter;

describe('LineByLinePrinter', function() {
  describe('_generateEmptyDiff', function() {
    it('should return an empty diff', function() {

      var lineByLinePrinter = new LineByLinePrinter({});
      var fileHtml = lineByLinePrinter._generateEmptyDiff();
      var expected = '<tr>\n' +
        '    <td class="d2h-info">\n' +
        '        <div class="d2h-code-line d2h-info">\n' +
        '            File without changes\n' +
        '        </div>\n' +
        '    </td>\n' +
        '</tr>\n';

      assert.equal(expected, fileHtml);
    });
  });

  describe('makeLineHtml', function() {
    it('should work for insertions', function() {

      var diffParser = require('../src/diff-parser.js').DiffParser;
      var lineByLinePrinter = new LineByLinePrinter({});
      var fileHtml = lineByLinePrinter.makeLineHtml(
        diffParser.LINE_TYPE.INSERTS, '', 30, '+', 'test');
      fileHtml = fileHtml.replace(/\n\n+/g, '\n');
      var expected = '<tr>\n' +
        '    <td class="d2h-code-linenumber d2h-ins">\n' +
        '        <div class="line-num1"></div>\n' +
        '        <div class="line-num2">30</div>\n' +
        '    </td>\n' +
        '    <td class="d2h-ins">\n' +
        '        <div class="d2h-code-line d2h-ins">\n' +
        '            <span class="d2h-code-line-prefix">test</span>\n' +
        '            <span class="d2h-code-line-ctn">+</span>\n' +
        '        </div>\n' +
        '    </td>\n' +
        '</tr>';

      assert.equal(expected, fileHtml);
    });

    it('should work for deletions', function() {
      var diffParser = require('../src/diff-parser.js').DiffParser;
      var lineByLinePrinter = new LineByLinePrinter({});
      var fileHtml = lineByLinePrinter.makeLineHtml(
        diffParser.LINE_TYPE.DELETES, 30, '', '-', 'test');
      fileHtml = fileHtml.replace(/\n\n+/g, '\n');
      var expected = '<tr>\n' +
        '    <td class="d2h-code-linenumber d2h-del">\n' +
        '        <div class="line-num1">30</div>\n' +
        '        <div class="line-num2"></div>\n' +
        '    </td>\n' +
        '    <td class="d2h-del">\n' +
        '        <div class="d2h-code-line d2h-del">\n' +
        '            <span class="d2h-code-line-prefix">test</span>\n' +
        '            <span class="d2h-code-line-ctn">-</span>\n' +
        '        </div>\n' +
        '    </td>\n' +
        '</tr>';

      assert.equal(expected, fileHtml);
    });

    it('should convert indents into non breakin spaces (2 white spaces)', function() {
      var diffParser = require('../src/diff-parser.js').DiffParser;
      var lineByLinePrinter = new LineByLinePrinter({});
      var fileHtml = lineByLinePrinter.makeLineHtml(
        diffParser.LINE_TYPE.INSERTS, '', 30, '+', '  test');
      fileHtml = fileHtml.replace(/\n\n+/g, '\n');
      var expected = '<tr>\n' +
        '    <td class="d2h-code-linenumber d2h-ins">\n' +
        '        <div class="line-num1"></div>\n' +
        '        <div class="line-num2">30</div>\n' +
        '    </td>\n' +
        '    <td class="d2h-ins">\n' +
        '        <div class="d2h-code-line d2h-ins">\n' +
        '            <span class="d2h-code-line-prefix">&nbsp;&nbsp;test</span>\n' +
        '            <span class="d2h-code-line-ctn">+</span>\n' +
        '        </div>\n' +
        '    </td>\n' +
        '</tr>';

      assert.equal(expected, fileHtml);
    });

    it('should convert indents into non breakin spaces (4 white spaces)', function() {
      var diffParser = require('../src/diff-parser.js').DiffParser;
      var lineByLinePrinter = new LineByLinePrinter({});
      var fileHtml = lineByLinePrinter.makeLineHtml(
        diffParser.LINE_TYPE.INSERTS, '', 30, '+', '    test');
      fileHtml = fileHtml.replace(/\n\n+/g, '\n');
      var expected = '<tr>\n' +
        '    <td class="d2h-code-linenumber d2h-ins">\n' +
        '        <div class="line-num1"></div>\n' +
        '        <div class="line-num2">30</div>\n' +
        '    </td>\n' +
        '    <td class="d2h-ins">\n' +
        '        <div class="d2h-code-line d2h-ins">\n' +
        '            <span class="d2h-code-line-prefix">&nbsp;&nbsp;&nbsp;&nbsp;test</span>\n' +
        '            <span class="d2h-code-line-ctn">+</span>\n' +
        '        </div>\n' +
        '    </td>\n' +
        '</tr>';

      assert.equal(expected, fileHtml);
    });

    it('should convert indents into non breakin spaces (one tab)', function() {
      var diffParser = require('../src/diff-parser.js').DiffParser;
      var lineByLinePrinter = new LineByLinePrinter({});
      var fileHtml = lineByLinePrinter.makeLineHtml(
        diffParser.LINE_TYPE.INSERTS, '', 30, '+', Utils.escape('\ttest'));
      fileHtml = fileHtml.replace(/\n\n+/g, '\n');
      var expected = '<tr>\n' +
        '    <td class="d2h-code-linenumber d2h-ins">\n' +
        '        <div class="line-num1"></div>\n' +
        '        <div class="line-num2">30</div>\n' +
        '    </td>\n' +
        '    <td class="d2h-ins">\n' +
        '        <div class="d2h-code-line d2h-ins">\n' +
        '            <span class="d2h-code-line-prefix">&nbsp;&nbsp;&nbsp;&nbsp;test</span>\n' +
        '            <span class="d2h-code-line-ctn">+</span>\n' +
        '        </div>\n' +
        '    </td>\n' +
        '</tr>';

      assert.equal(expected, fileHtml);
    });
  });

  describe('makeFileDiffHtml', function() {
    it('should work for simple file', function() {
      var lineByLinePrinter = new LineByLinePrinter({});

      var file = {
        addedLines: 12,
        deletedLines: 41,
        language: 'js',
        oldName: 'my/file/name.js',
        newName: 'my/file/name.js'
      };
      var diffs = '<span>Random Html</span>';

      var fileHtml = lineByLinePrinter.makeFileDiffHtml(file, diffs);

      var expected = '<div id="d2h-781444" class="d2h-file-wrapper" data-lang="js">\n' +
        '    <div class="d2h-file-header">\n' +
        '    <span class="d2h-file-stats">\n' +
        '      <span class="d2h-lines-added">\n' +
        '        <span>+12</span>\n' +
        '      </span>\n' +
        '      <span class="d2h-lines-deleted">\n' +
        '        <span>-41</span>\n' +
        '      </span>\n' +
        '    </span>\n' +
        '    <span class="d2h-file-name-wrapper">\n' +
        '        <span class="d2h-file-name">&nbsp;my/file/name.js</span>\n' +
        '    </span>\n' +
        '    </div>\n' +
        '    <div class="d2h-file-diff">\n' +
        '        <div class="d2h-code-wrapper">\n' +
        '            <table class="d2h-diff-table">\n' +
        '                <tbody class="d2h-diff-tbody">\n' +
        '                <span>Random Html</span>\n' +
        '                </tbody>\n' +
        '            </table>\n' +
        '        </div>\n' +
        '    </div>\n' +
        '</div>';

      assert.equal(expected, fileHtml);
    });
  });

  describe('makeLineByLineHtmlWrapper', function() {
    it('should work for simple content', function() {
      var lineByLinePrinter = new LineByLinePrinter({});
      var fileHtml = lineByLinePrinter.makeLineByLineHtmlWrapper('<span>Random Html</span>');

      var expected =
        '<div class="d2h-wrapper">\n' +
        '    <span>Random Html</span>\n' +
        '</div>';

      assert.equal(expected, fileHtml);
    });
  });

  describe('generateLineByLineJsonHtml', function() {
    it('should work for list of files', function() {
      var exampleJson = [{
        blocks: [{
          lines: [{
            content: '-test',
            type: 'd2h-del',
            oldNumber: 1,
            newNumber: null
          },
            {
              content: '+test1r',
              type: 'd2h-ins',
              oldNumber: null,
              newNumber: 1
            }],
          oldStartLine: '1',
          oldStartLine2: null,
          newStartLine: '1',
          header: '@@ -1 +1 @@'
        }],
        deletedLines: 1,
        addedLines: 1,
        checksumBefore: '0000001',
        checksumAfter: '0ddf2ba',
        oldName: 'sample',
        language: undefined,
        newName: 'sample',
        isCombined: false
      }];

      var lineByLinePrinter = new LineByLinePrinter({matching: 'lines'});
      var html = lineByLinePrinter.generateLineByLineJsonHtml(exampleJson);
      var expected =
        '<div class="d2h-wrapper">\n' +
        '    <div id="d2h-675094" class="d2h-file-wrapper" data-lang="">\n' +
        '    <div class="d2h-file-header">\n' +
        '    <span class="d2h-file-stats">\n' +
        '      <span class="d2h-lines-added">\n' +
        '        <span>+1</span>\n' +
        '      </span>\n' +
        '      <span class="d2h-lines-deleted">\n' +
        '        <span>-1</span>\n' +
        '      </span>\n' +
        '    </span>\n' +
        '    <span class="d2h-file-name-wrapper">\n' +
        '        <span class="d2h-file-name">&nbsp;sample</span>\n' +
        '    </span>\n' +
        '    </div>\n' +
        '    <div class="d2h-file-diff">\n' +
        '        <div class="d2h-code-wrapper">\n' +
        '            <table class="d2h-diff-table">\n' +
        '                <tbody class="d2h-diff-tbody">\n' +
        '                <tr>\n' +
        '    <td class="d2h-code-linenumber d2h-info"></td>\n' +
        '    <td class="d2h-info">\n' +
        '        <div class="d2h-code-line d2h-info"></div>\n' +
        '    </td>\n' +
        '</tr><tr>\n' +
        '    <td class="d2h-code-linenumber d2h-del d2h-change">\n' +
        '        <div class="line-num1">1</div>\n' +
        '        <div class="line-num2"></div>\n' +
        '    </td>\n' +
        '    <td class="d2h-del d2h-change">\n' +
        '        <div class="d2h-code-line d2h-del d2h-change">\n' +
        '            <span class="d2h-code-line-prefix">-</span>\n' +
        '            <span class="d2h-code-line-ctn"><del>test</del></span>\n' +
        '        </div>\n' +
        '    </td>\n' +
        '</tr><tr>\n' +
        '    <td class="d2h-code-linenumber d2h-ins d2h-change">\n' +
        '        <div class="line-num1"></div>\n' +
        '        <div class="line-num2">1</div>\n' +
        '    </td>\n' +
        '    <td class="d2h-ins d2h-change">\n' +
        '        <div class="d2h-code-line d2h-ins d2h-change">\n' +
        '            <span class="d2h-code-line-prefix">+</span>\n' +
        '            <span class="d2h-code-line-ctn"><ins>test1r</ins></span>\n' +
        '        </div>\n' +
        '    </td>\n' +
        '</tr>\n' +
        '                </tbody>\n' +
        '            </table>\n' +
        '        </div>\n' +
        '    </div>\n' +
        '</div>\n' +
        '</div>';

      assert.equal(expected, html);
    });

    it('should work for empty blocks', function() {
      var exampleJson = [{
        blocks: [],
        deletedLines: 0,
        addedLines: 0,
        oldName: 'sample',
        language: 'js',
        newName: 'sample',
        isCombined: false
      }];

      var lineByLinePrinter = new LineByLinePrinter();
      var html = lineByLinePrinter.generateLineByLineJsonHtml(exampleJson);
      var expected =
        '<div class="d2h-wrapper">\n' +
        '    <div id="d2h-675094" class="d2h-file-wrapper" data-lang="js">\n' +
        '    <div class="d2h-file-header">\n' +
        '    <span class="d2h-file-stats">\n' +
        '      <span class="d2h-lines-added">\n' +
        '        <span>+0</span>\n' +
        '      </span>\n' +
        '      <span class="d2h-lines-deleted">\n' +
        '        <span>-0</span>\n' +
        '      </span>\n' +
        '    </span>\n' +
        '    <span class="d2h-file-name-wrapper">\n' +
        '        <span class="d2h-file-name">&nbsp;sample</span>\n' +
        '    </span>\n' +
        '    </div>\n' +
        '    <div class="d2h-file-diff">\n' +
        '        <div class="d2h-code-wrapper">\n' +
        '            <table class="d2h-diff-table">\n' +
        '                <tbody class="d2h-diff-tbody">\n' +
        '                <tr>\n' +
        '    <td class="d2h-info">\n' +
        '        <div class="d2h-code-line d2h-info">\n' +
        '            File without changes\n' +
        '        </div>\n' +
        '    </td>\n' +
        '</tr>\n' +
        '\n' +
        '                </tbody>\n' +
        '            </table>\n' +
        '        </div>\n' +
        '    </div>\n' +
        '</div>\n' +
        '</div>';

      assert.equal(expected, html);
    });
  });

  describe('_processLines', function() {
    it('should work for simple block header', function() {
      var lineByLinePrinter = new LineByLinePrinter({});
      var oldLines = [{
        content: '-test',
        type: 'd2h-del',
        oldNumber: 1,
        newNumber: null
      }];
      var newLines = [{
        content: '+test1r',
        type: 'd2h-ins',
        oldNumber: null,
        newNumber: 1
      }];

      var html = lineByLinePrinter._processLines(oldLines, newLines);

      var expected =
        '<tr>\n' +
        '    <td class="d2h-code-linenumber d2h-del">\n' +
        '        <div class="line-num1">1</div>\n' +
        '        <div class="line-num2"></div>\n' +
        '    </td>\n' +
        '    <td class="d2h-del">\n' +
        '        <div class="d2h-code-line d2h-del">\n' +
        '            <span class="d2h-code-line-ctn">-test</span>\n' +
        '        </div>\n' +
        '    </td>\n' +
        '</tr><tr>\n' +
        '    <td class="d2h-code-linenumber d2h-ins">\n' +
        '        <div class="line-num1"></div>\n' +
        '        <div class="line-num2">1</div>\n' +
        '    </td>\n' +
        '    <td class="d2h-ins">\n' +
        '        <div class="d2h-code-line d2h-ins">\n' +
        '            <span class="d2h-code-line-ctn">+test1r</span>\n' +
        '        </div>\n' +
        '    </td>\n' +
        '</tr>';

      assert.equal(expected, html);
    });
  });

  describe('_generateFileHtml', function() {
    it('should work for simple file', function() {
      var lineByLinePrinter = new LineByLinePrinter({});
      var file = {
        blocks: [{
          lines: [{
            content: ' one context line',
            type: 'd2h-cntx',
            oldNumber: 1,
            newNumber: 1
          },
            {
              content: '-test',
              type: 'd2h-del',
              oldNumber: 2,
              newNumber: null
            },
            {
              content: '+test1r',
              type: 'd2h-ins',
              oldNumber: null,
              newNumber: 2
            },
            {
              content: '+test2r',
              type: 'd2h-ins',
              oldNumber: null,
              newNumber: 3
            }],
          oldStartLine: '1',
          oldStartLine2: null,
          newStartLine: '1',
          header: '@@ -1 +1 @@'
        }],
        deletedLines: 1,
        addedLines: 1,
        checksumBefore: '0000001',
        checksumAfter: '0ddf2ba',
        oldName: 'sample',
        language: undefined,
        newName: 'sample',
        isCombined: false
      };

      var html = lineByLinePrinter._generateFileHtml(file);

      var expected =
        '<tr>\n' +
        '    <td class="d2h-code-linenumber d2h-info"></td>\n' +
        '    <td class="d2h-info">\n' +
        '        <div class="d2h-code-line d2h-info"></div>\n' +
        '    </td>\n' +
        '</tr><tr>\n' +
        '    <td class="d2h-code-linenumber d2h-cntx">\n' +
        '        <div class="line-num1">1</div>\n' +
        '        <div class="line-num2">1</div>\n' +
        '    </td>\n' +
        '    <td class="d2h-cntx">\n' +
        '        <div class="d2h-code-line d2h-cntx">\n' +
        '            <span class="d2h-code-line-ctn">&nbsp;one&nbsp;context&nbsp;line</span>\n' +
        '        </div>\n' +
        '    </td>\n' +
        '</tr><tr>\n' +
        '    <td class="d2h-code-linenumber d2h-del">\n' +
        '        <div class="line-num1">2</div>\n' +
        '        <div class="line-num2"></div>\n' +
        '    </td>\n' +
        '    <td class="d2h-del">\n' +
        '        <div class="d2h-code-line d2h-del">\n' +
        '            <span class="d2h-code-line-prefix">-</span>\n' +
        '            <span class="d2h-code-line-ctn"><del>test</del></span>\n' +
        '        </div>\n' +
        '    </td>\n' +
        '</tr><tr>\n' +
        '    <td class="d2h-code-linenumber d2h-ins">\n' +
        '        <div class="line-num1"></div>\n' +
        '        <div class="line-num2">2</div>\n' +
        '    </td>\n' +
        '    <td class="d2h-ins">\n' +
        '        <div class="d2h-code-line d2h-ins">\n' +
        '            <span class="d2h-code-line-prefix">+</span>\n' +
        '            <span class="d2h-code-line-ctn"><ins>test1r</ins></span>\n' +
        '        </div>\n' +
        '    </td>\n' +
        '</tr><tr>\n' +
        '    <td class="d2h-code-linenumber d2h-ins">\n' +
        '        <div class="line-num1"></div>\n' +
        '        <div class="line-num2">3</div>\n' +
        '    </td>\n' +
        '    <td class="d2h-ins">\n' +
        '        <div class="d2h-code-line d2h-ins">\n' +
        '            <span class="d2h-code-line-ctn">+test2r</span>\n' +
        '        </div>\n' +
        '    </td>\n' +
        '</tr>';

      assert.equal(expected, html);
    });
  });
});