$(document).ready(function() {
    $('.twitterInfo').append('Nahrávám data...');
    $.ajax({
        type:'GET',
        dataType:'jsonp',
        url:'http://api.twitter.com/1/statuses/user_timeline.json',
        data:{screen_name:'SiteOneCZ', include_rts:1}, //
        success:function(data, textStatus, XMLHttpRequest) {
            // text tweetu
            var tweet = prevedTextNaOdkazy(data[0].text);
            $('.twitterInfo').empty();
            $('.twitterInfo').append(tweet);
            // datum
            var uglyDate = data[0].created_at;
            var prettyDate = DateHelper.prettyDate(DateHelper.strtotime(uglyDate), "cz");
            $('.timeInfo').append(prettyDate);
        },
        error:function(req, status, error) {
			 $('.twitterInfo').append('error: '+status);
        }
    });
});

/**
 * Prevede text na odkazy
 * @param plainText
 */
function prevedTextNaOdkazy(plainText) {
    var replaceText, replacePattern1, replacePattern2, replacePattern3;
    replacePattern1 = /(\b(https?|ftp):\/\/[-A-Z0-9+&@#\/%?=~_|!:,.;]*[-A-Z0-9+&@#\/%=~_|])/gim;
    replacedText = plainText.replace(replacePattern1, '<a href="$1" target="_blank">$1</a>');
    replacePattern2 = /(^|[^\/])(www\.[\S]+(\b|$))/gim;
    replacedText = replacedText.replace(replacePattern2, '$1<a href="http://$2" target="_blank">$2</a>');
    replacePattern3 = /(\w+@[a-zA-Z_]+?\.[a-zA-Z]{2,6})/gim;
    replacedText = replacedText.replace(replacePattern3, '<a href="mailto:$1">$1</a>');
    return replacedText
}

DateHelper = {
    /**
     * Prevede string na datum
     * tahle funkce je analogie PHPkove strtotime
     * @param str
     * @param now
     */
    strtotime: function (str, now)
    {
        var i, match, s, strTmp = '', parse = '';
        strTmp = str;
        strTmp = strTmp.replace(/\s{2,}|^\s|\s$/g, ' '); // unecessary spaces
        strTmp = strTmp.replace(/[\t\r\n]/g, ''); // unecessary chars
        if (strTmp == 'now') {
            return (new Date()).getTime()/1000; // Return seconds, not milli-seconds
        } else if (!isNaN(parse = Date.parse(strTmp))) {
            return (parse/1000);
        } else if (now) {
            now = new Date(now*1000); // Accept PHP-style seconds
        } else {
            now = new Date();
        }
        strTmp = strTmp.toLowerCase();
        var __is =
        {
            day:
            {
                'sun': 0,
                'mon': 1,
                'tue': 2,
                'wed': 3,
                'thu': 4,
                'fri': 5,
                'sat': 6
            },
            mon:
            {
                'jan': 0,
                'feb': 1,
                'mar': 2,
                'apr': 3,
                'may': 4,
                'jun': 5,
                'jul': 6,
                'aug': 7,
                'sep': 8,
                'oct': 9,
                'nov': 10,
                'dec': 11
            }
        };
        var process = function (m) {
            var ago = (m[2] && m[2] == 'ago');
            var num = (num = m[0] == 'last' ? -1 : 1) * (ago ? -1 : 1);

            switch (m[0]) {
                case 'last':
                case 'next':
                    switch (m[1].substring(0, 3)) {
                        case 'yea':
                            now.setFullYear(now.getFullYear() + num);
                            break;
                        case 'mon':
                            now.setMonth(now.getMonth() + num);
                            break;
                        case 'wee':
                            now.setDate(now.getDate() + (num * 7));
                            break;
                        case 'day':
                            now.setDate(now.getDate() + num);
                            break;
                        case 'hou':
                            now.setHours(now.getHours() + num);
                            break;
                        case 'min':
                            now.setMinutes(now.getMinutes() + num);
                            break;
                        case 'sec':
                            now.setSeconds(now.getSeconds() + num);
                            break;
                        default:
                            var day;
                            if (typeof (day = __is.day[m[1].substring(0, 3)]) != 'undefined') {
                                var diff = day - now.getDay();
                                if (diff == 0) {
                                    diff = 7 * num;
                                } else if (diff > 0) {
                                    if (m[0] == 'last') {diff -= 7;}
                                } else {
                                    if (m[0] == 'next') {diff += 7;}
                                }
                                now.setDate(now.getDate() + diff);
                            }
                    }
                    break;
                default:
                    if (/\d+/.test(m[0])) {
                        num *= parseInt(m[0], 10);
                        switch (m[1].substring(0, 3)) {
                            case 'yea':
                                now.setFullYear(now.getFullYear() + num);
                                break;
                            case 'mon':
                                now.setMonth(now.getMonth() + num);
                                break;
                            case 'wee':
                                now.setDate(now.getDate() + (num * 7));
                                break;
                            case 'day':
                                now.setDate(now.getDate() + num);
                                break;
                            case 'hou':
                                now.setHours(now.getHours() + num);
                                break;
                            case 'min':
                                now.setMinutes(now.getMinutes() + num);
                                break;
                            case 'sec':
                                now.setSeconds(now.getSeconds() + num);
                                break;
                        }
                    } else {
                        return false;
                    }
                    break;
            }
            return true;
        };
        match = strTmp.match(/^(\d{2,4}-\d{2}-\d{2})(?:\s(\d{1,2}:\d{2}(:\d{2})?)?(?:\.(\d+))?)?$/);
        if (match != null) {
            if (!match[2]) {
                match[2] = '00:00:00';
            } else if (!match[3]) {
                match[2] += ':00';
            }
            s = match[1].split(/-/g);
            for (i in __is.mon) {
                if (__is.mon[i] == s[1] - 1) {
                    s[1] = i;
                }
            }
            s[0] = parseInt(s[0], 10);
            s[0] = (s[0] >= 0 && s[0] <= 69) ? '20'+(s[0] < 10 ? '0'+s[0] : s[0]+'') : (s[0] >= 70 && s[0] <= 99) ? '19'+s[0] : s[0]+'';
            return parseInt(this.strtotime(s[2] + ' ' + s[1] + ' ' + s[0] + ' ' + match[2])+(match[4] ? match[4]/1000 : ''), 10);
        }

        var regex = '([+-]?\\d+\\s'+
            '(years?|months?|weeks?|days?|hours?|min|minutes?|sec|seconds?'+
            '|sun\\.?|sunday|mon\\.?|monday|tue\\.?|tuesday|wed\\.?|wednesday'+
            '|thu\\.?|thursday|fri\\.?|friday|sat\\.?|saturday)'+
            '|(last|next)\\s'+
            '(years?|months?|weeks?|days?|hours?|min|minutes?|sec|seconds?'+
            '|sun\\.?|sunday|mon\\.?|monday|tue\\.?|tuesday|wed\\.?|wednesday'+
            '|thu\\.?|thursday|fri\\.?|friday|sat\\.?|saturday))'+
            '(\\sago)?';
        match = strTmp.match(new RegExp(regex, 'gi')); // Brett: seems should be case insensitive per docs, so added 'i'
        if (match == null) {
            return false;
        }
        for (i = 0; i < match.length; i++) {
            if (!process(match[i].split(' '))) {
                return false;
            }
        }
        return (now.getTime()/1000);
    },
    /**
     * Z unix timestamp udela datum ve stylu "pred 20 minutami"
     * @param time
     */
    prettyDate: function (time, lang)
    {
        // inicializace nepovinneho parametru lang
        lang = lang == null ? 'en' : lang;
        // parser
        var monthname = ["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"];
        var date = new Date(time*1000),
        diff = (((new Date()).getTime() - date.getTime()) / 1000),
        day_diff = Math.floor(diff / 86400);
        if ( isNaN(day_diff) || day_diff < 0 ){
            return '';
        }
        if(day_diff >= 31){
            var date_year = date.getFullYear();
            var month_name = monthname[date.getMonth()];
            var date_month = date.getMonth() + 1;
            if(date_month < 10){
                date_month = "0"+date_month;
            }
            var date_monthday = date.getDate();
            if(date_monthday < 10){
                date_monthday = "0"+date_monthday;
            }
            return date_monthday + " " + month_name + " " + date_year;
        }
        if(lang == 'en') {
            return day_diff == 0 && (
                        diff < 60 && "just now" ||
                        diff < 120 && "1 minute ago" ||
                        diff < 3600 && Math.floor( diff / 60 ) + " minutes ago" ||
                        diff < 7200 && "1 hour ago" ||
                        diff < 86400 && "about " + Math.floor( diff / 3600 ) + " hours ago") ||
                    day_diff == 1 && "Yesterday" ||
                    day_diff < 7 && day_diff + " days ago" ||
                    day_diff < 31 && Math.ceil( day_diff / 7 ) + " week" + ((Math.ceil( day_diff / 7 )) == 1 ? "" : "s") + " ago";
        }
        else
        {
            return day_diff == 0 && (
                        diff < 60 && "právě teď" ||
                        diff < 120 && "před minutkou" ||
                        diff < 3600 && 'před ' + Math.floor( diff / 60 ) + " minutami" ||
                        diff < 7200 && "před hodinou" ||
                        diff < 86400 && "před " + Math.floor( diff / 3600 ) + " hodinami") ||
                    day_diff == 1 && "Včera" ||
                    day_diff < 7 && 'před ' + day_diff + " dny" ||
                    day_diff < 31 &&  "před "+ Math.ceil( day_diff / 7 ) + ((Math.ceil( day_diff / 7 )) == 1 ? " týdnem" : " týdny") + "";
        }
    }
}