/**
 * Created by Estevao on 15-01-2015.
 */

(function () {
    'use strict';

    require('source-map-support').install();
    require('chai').should();

    var fs        = require('fs'),
        showdown  = require('../../../dist/showdown.js'),
        converter = new showdown.Converter(),
        cases     = fs
            .readdirSync('test/cases/')
            .filter(filter())
            .map(map('test/cases/')),
        issues    = fs
            .readdirSync('test/issues/')
            .filter(filter())
            .map(map('test/issues/'));

    //Tests
    describe('Converter.makeHtml() simple testcases', function () {
        for (var i = 0; i < cases.length; ++i) {
            it(cases[i].name, assertion(cases[i]));
        }
    });

    describe('Converter.makeHtml() issues testcase', function () {
        for (var i = 0; i < issues.length; ++i) {
            it(issues[i].name, assertion(issues[i]));
        }
    });


    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
            };
        };
    }

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

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

        // 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();

        // Convert whitespace to a visible character so that it shows up on error reports
        testCase.expected = testCase.expected.replace(/ /g, '·');
        testCase.expected = testCase.expected.replace(/\n/g, '•\n');
        testCase.actual = testCase.actual.replace(/ /g, '·');
        testCase.actual = testCase.actual.replace(/\n/g, '•\n');

        return testCase;

    }

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

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