/**
 * Created by Estevao on 08-06-2015.
 */

//jscs:disable requireCamelCaseOrUpperCaseIdentifiers
require('source-map-support').install();
require('chai').should();
var fs = require('fs'),
    os = require('os'),
    beautify = require('js-beautify').html_beautify,
    beauOptions = {
      eol: os.EOL,
      indent_size: 2,
      preserve_newlines: false
    };

function getTestSuite(dir) {
  return fs.readdirSync(dir)
    .filter(filter())
    .map(map(dir));
}

function filter() {
  return function (file) {
    var ext = file.slice(-3);
    return (ext === '.md');
  };
}

function map(dir) {
  return function (file) {
    var name = file.replace('.md', ''),
      htmlPath = dir + name + '.html',
      html = fs.readFileSync(htmlPath, 'utf8'),
      mdPath = dir + name + '.md',
      md = fs.readFileSync(mdPath, 'utf8');

    return {
      name:     name,
      input:    md,
      expected: html
    };
  };
}

function assertion(testCase, converter) {
  return function () {
    testCase.actual = converter.makeHtml(testCase.input);
    testCase = normalize(testCase);

    // Compare
    testCase.actual.should.equal(testCase.expected);
  };
}

//Normalize input/output
function normalize(testCase) {

  // Normalize line returns
  testCase.expected = testCase.expected.replace(/(\r\n)|\n|\r/g, '\n');
  testCase.actual = testCase.actual.replace(/(\r\n)|\n|\r/g, '\n');

  // Ignore all leading/trailing whitespace
  testCase.expected = testCase.expected.split('\n').map(function (x) {
    return x.trim();
  }).join('\n');
  testCase.actual = testCase.actual.split('\n').map(function (x) {
    return x.trim();
  }).join('\n');

  // Remove extra lines
  testCase.expected = testCase.expected.trim();
  testCase.actual = testCase.actual.trim();

  //Beautify
  testCase.expected = beautify(testCase.expected, beauOptions);
  testCase.actual = beautify(testCase.actual, beauOptions);

  // Normalize line returns
  testCase.expected = testCase.expected.replace(/(\r\n)|\n|\r/g, os.EOL);
  testCase.actual = testCase.actual.replace(/(\r\n)|\n|\r/g, os.EOL);

  return testCase;
}

module.exports = {
  getTestSuite: getTestSuite,
  assertion: assertion
};