var Blog = {
    calendar: null,
    o: {},

    onDatesLoaded: function(data, textStatus)
    {
        Blog.o.dates = ('object' == typeof data.dates) ? data.dates : {};
        $(Blog.calendar).datepicker('refresh');
    },

    pad: function (val, len)
    {
        val = String(val);
        len = len || 2;
        while (val.length < len) val = "0" + val;
        return val;
    },

    onBeforeShowDay: function(date)
    {
        var str = date.getFullYear() + '-' + Blog.pad(date.getMonth() + 1, 2) + '-' + Blog.pad(date.getDate(), 2);
        if (str in Blog.o.dates) {
            return [true, ''];
        }
        return [false];
    },

    onSelect: function(dateText, inst)
    {
        location.href = qs.constant('BASE_URL') + '/' + Blog.o.viewAlias + '/' + dateText;
        return false;
    },

    onChangeMonthYear: function(year, month, inst)
    {
        var data = {
            action: 'calendar',
            year:   year,
            month:  month
        };
        Blog.o.dates = {};
        $.getJSON(Blog.o.viewAlias, data, Blog.onDatesLoaded);
        return true;
    },

    initCalendar: function(o)
    {
        Blog.o = o || {};
        if (!Blog.o.dates || !Blog.o.viewAlias) {
            alert('Error Blog: dates or viewAlias is not defined in initCalendar');
            return false;
        }
        var params = {
            dateFormat:        'yy/mm/dd',
            onSelect:          Blog.onSelect,
            beforeShowDay:     Blog.onBeforeShowDay,
            onChangeMonthYear: Blog.onChangeMonthYear
        };
        if ('minDate' in Blog.o) {
            params.minDate = new Date(Blog.o.minDate);
        }
        if ('maxDate' in Blog.o) {
            params.maxDate = new Date(Blog.o.maxDate);
        }
        if ('defaultDate' in Blog.o) {
            params.defaultDate = Blog.o.defaultDate;
        }
        Blog.calendar = $("#blog-calendar");
        $(Blog.calendar).datepicker(params);
    },

    showCommentsForm: function ()
    {
        $('.post-comment-submitted-block').hide();
        $('.post-comment-form-block').show();
    },

    initComments: function()
    {
        $(document).ready(function() {
            $.scrollTo("div.post-comment-form", 400);
        });
    }
}