$(function() {
    var fix_float_input = function (e) {
        var el = $(this);
        var new_val = fix_float_string(el.val());
        if (new_val != el.val())
            el.val(new_val);
    }
    var calc_summa = function (e) {
        var el = $(this);
        var qty = parseFloat(el.closest('tr.row').find('td.qty input').val());
        var price = parseFloat(el.closest('tr.row').find('td.price input').val());
        var total_price = qty * price;
        if (total_price)
            el.closest('tr.row').find('td.total_price input').val(total_price.toFixed(2));
    }
    var calc_itogo_nds = function() {
        $('#itogo_nds_text').html('НДС ' + $('#id_nds_value option:selected').text());
        var nds = parseFloat($('#id_nds_value').val()) * parseFloat($('#itogo').html()) / 100;
        $('#itogo_nds').html(nds.toFixed(2));
    }
    window.calc_itogo = function (e) {
        var itogo_sum = 0;
        $('#tbl_items').find('.total_price input:visible').each(function() {
            var itogo_sum_row = $(this).val() ? parseFloat($(this).val()) : 0;
            itogo_sum += itogo_sum_row;
        })
        $('#itogo').html(itogo_sum.toFixed(2));
        calc_itogo_nds();
    }
    window.set_events = function set_events() {
        $("#tbl_items tr.row td.qty input").on('keyup', fix_float_input);
        $("#tbl_items tr.row td.price input").on('keyup', fix_float_input);

        $("#tbl_items tr.row td.debit input").on('keyup', fix_float_input);
        $("#tbl_items tr.row td.credit input").on('keyup', fix_float_input);

        // not formset fields though...
        $("div#saldo_debit input").on('keyup', fix_float_input);
        $("div#saldo_credit input").on('keyup', fix_float_input);

        $("#tbl_items tr.row td.qty input").on('keyup', calc_summa);
        $("#tbl_items tr.row td.price input").on('keyup', calc_summa);

        $("#tbl_items tr.row td.qty input").blur(window.calc_itogo);
        $("#tbl_items tr.row td.price input").blur(window.calc_itogo);
        $("#tbl_items tr.row td.total_price input").blur(window.calc_itogo);

        //$('input[name=nds_type]').change(calc_itogo_nds);
        $('#id_nds_value').change(calc_itogo_nds);

//
        //$("#tbl_items tr.row td.qty input").blur(calc_itogo_nds);
        //$("#tbl_items tr.row td.price input").blur(calc_itogo_nds);
        //$("#tbl_items tr.row td.total_price input").blur(calc_itogo_nds);
    }
    window.set_events();
    window.calc_itogo();
    calc_itogo_nds();
})


function fix_float_string(val) {
    try {
        var part1, part2, lastpos;

        lastpos = val.lastIndexOf('.');
        if (lastpos != -1) { // string have at least one dot
            part1 = val.substr(0, lastpos);
            part2 = val.substr(lastpos+1);
            val = part1.replace('.', '').replace(',', '') + '.' + part2.replace('.', '').replace(',', '');
        }
        else {
            lastpos = val.lastIndexOf(',');
            if (lastpos != -1) { // string have at least one comma
                part1 = val.substr(0, lastpos);
                part2 = val.substr(lastpos+1);
                val = part1.replace('.', '').replace(',', '') + '.' + part2.replace('.', '').replace(',', '');
            }
        }
    }
    catch (e) {
        if (!e instanceof TypeError)
            throw(e);
    }

    return val;
}