$(function() {
    var nds = '';

    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) {
        console.log('calc_summa');
        console.log($('#id_nds_method input:checked').val());

        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;

        total_price = (qty && price) ? qty * price : 0;

        if (total_price) {
          el.closest('tr.row').find('td.total_price input').val(total_price.toFixed(2));
        } else {
          el.closest('tr.row').find('td.total_price input').val('');
        }

    };

    var calc_itogo_nds = function() {
        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;
        });

         if ($('#id_nds_value').val() !== '0') {
           $('#nds_method').show();
           $('#decryption').show();
         }

        if ($('#id_nds_value').val() && $('#itogo').html()) {

          console.log('----','NDS %',$('#id_nds_value').val());
          console.log('----','Total %',$('#itogo').html());
          console.log('----','Metod %', parseInt($('#id_nds_method input:checked').val()));

          if (parseInt($('#id_nds_method input:checked').val())) {
            nds = parseFloat($('#id_nds_value').val()) * parseFloat(itogo_sum) / 100;
          } else {
            nds = (parseFloat(itogo_sum) / (100 + parseFloat($('#id_nds_value').val()))) * parseFloat($('#id_nds_value').val());
          }
           // console.log(nds.toFixed(2))
          $('#totalNds').html(nds.toFixed(2));
        } else {
          $('#totalNds').html('');
        }

    };

    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;
        });
        if (itogo_sum) {
            if (parseInt($('#id_nds_method input:checked').val())) {
                console.log('add');
                nds = parseFloat($('#id_nds_value').val()) * parseFloat(itogo_sum) / 100;
                $('#itogo').html(parseFloat(itogo_sum.toFixed(2)) + parseFloat(nds.toFixed(2)));
            } else {
              nds = (parseFloat(itogo_sum) / (100 + parseFloat($('#id_nds_value').val()))) * parseFloat($('#id_nds_value').val());
              var totalWithoutNds = parseFloat(itogo_sum.toFixed(2)) - parseFloat(nds).toFixed(2);
              $('#decryption').html(totalWithoutNds + ' + НДС');
              $('#itogo').html(itogo_sum.toFixed(2));
            }

        } else {
          $('#itogo').html('');
        }

        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);

        $('#id_nds_value').on('change', function(){

          calc_itogo_nds();
          calc_itogo();
          if (!parseInt($('#id_nds_method input:checked').val())) {
             $('#decryption').show();
          } else {
            $('#decryption').hide();
          }
        });
        $('#id_nds_method').on('change', function () {
          console.log('id_nds_method change');
          calc_itogo();
          if (!parseInt($('#id_nds_method input:checked').val())) {
             $('#decryption').show();
          } else {
            $('#decryption').hide();
          }
        });

    };
    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;
}