var internal__ipsCollection = [];

function getObj(x) {
    if (document.getElementById) return (document.getElementById(x)) ? document.getElementById(x) : false;
    return false;
}

function updateInfos() { }

function IpAddress(val) {
    this.internalIndex = internal__ipsCollection.length;
    this.getIndex = function() { return this.internalIndex };
    this.internalType = 'ip';
    this.name = 'internal__ipObj' + this.internalIndex;
    this.bytes = [];
    this.getIpText = function() { return this.bytes[3].getText() + '.' + this.bytes[2].getText() + '.' + this.bytes[1].getText() + '.' + this.bytes[0].getText() };
    this.getBinaryText = function() { return this.bytes[3].getBitsString() + '.' + this.bytes[2].getBitsString() + '.' + this.bytes[1].getBitsString() + '.' + this.bytes[0].getBitsString() };
    this.getName = function() { return this.name };
    this.getText = function() { return this.getValue().toString() };
    this.getType = function() { return this.internalType };
    this.getValue = function() { return this.bytes[0].getValue() + 2 * (this.bytes[1].getValue() + 2 * (this.bytes[2].getValue() + 2 * this.bytes[3].getValue())) };
    this.setValue = internal__IPAddress__setIpAddressValue;
    this.setTextValue = internal__IPAddress__setIpAddressTextValue;
    this.getHtmlForm = function() { return '<div class="ipform" id="' + this.getName() + '_form">' + this.bytes[3].getHtmlFullForm() + this.bytes[2].getHtmlFullForm() + this.bytes[1].getHtmlFullForm() + this.bytes[0].getHtmlFullForm() + '</div>' };
    this.toString = this.getHtmlForm;
    internal__ipsCollection[this.internalIndex] = this;
    internal__IPAddress__initializeBytes(this, (val) ? parseInt(val) : 0);
    return this;
}

function NetMask(val) {
    var x = new IpAddress(val);
    x.internalType = 'mask';
    x.setNetMask = internal__NetMask__setNetMask;
    x.getMaskLength = internal__NetMask__getNetMaskLength;
    return x;
}

function Byte(ip, val) {
    this.ip = ip;
    this.internalIndex = this.ip.bytes.length;
    this.getIndex = function() { return this.internalIndex };
    this.name = this.ip.getName() + '_byte' + this.internalIndex;
    this.getName = function() { return this.name };
    this.bits = [];
    this.setValue = internal__Byte__setByteValue;
    this.getIp = function() { return this.ip };
    this.getText = function() { return this.getValue().toString() };
    this.getValue = internal__Byte__getValueFromBits;
    this.getBitsArray = function() { return this.bits };
    this.getBitsString = function() { var risp = ''; for (var i = 7; i > -1; i--) risp += this.bits[i].getText(); return risp };
    this.getHtmlEditField = function() { return '<input id="' + this.getName() + '_edit" type="text" class="byte" value="' + this.getText() + '" onchange="internal__ipsCollection[' + this.ip.getIndex() + '].bytes[' + this.getIndex() + '].updateByEdit()" size="3" />' };
    this.getHtmlBitsField = function() { var i, a = []; for (i = 0; i < 8; i++) a[i] = this.bits[7 - i].getHtmlButton(); return a.join("\n") };
    this.getHtmlFullForm = function() { return '<div class="byteform"><div class="byteedit">' + this.getHtmlEditField() + '</div><div class="bytebits">' + this.getHtmlBitsField() + '</div></div>' };
    this.updateHtml = function() { var x = getObj(this.getName() + '_edit'); if (x) x.value = this.getText() };
    this.updateByEdit = function() { this.setValue(parseInt(getObj(this.getName() + '_edit').value)); for (var i = 0; i < 7; i++) this.bits[i].updateHtml(); updateInfos() };
    this.ip.bytes[this.internalIndex] = this;
    internal__Byte__initializeBits(this, (val) ? parseInt(val) : 0);
    return this;
}

function Bit(by, val) {
    this.by = by;
    this.internalIndex = this.by.bits.length;
    this.getIndex = function() { return this.internalIndex };
    this.name = this.by.getName() + '_bit' + this.internalIndex;
    this.getName = function() { return this.name };
    this.value = (val) ? parseInt(val) % 2 : 0;
    this.getByte = function() { return this.by };
    this.getText = function() { return this.value.toString() };
    this.getValue = function() { return parseInt(this.value) };
    this.getReverse = function() { return this.value == 0 ? 1 : 0 };
    this.setValue = function(v) { this.value = parseInt(v) % 2; this.updateHtml(); return this.value };
    this.setReverse = function() { this.setValue(this.getReverse()); this.updateHtml(); this.by.updateHtml(); updateInfos() };
    this.getHtmlButton = internal__Bit__getHtmlButton;
    this.updateHtml = function() { var x = getObj(this.getName()); if (x) x.innerHTML = this.getText(); };
    this.by.bits[this.internalIndex] = this;
    return this;
}


function internal__IPAddress__initializeBytes(ip, v) {
    var r, risp = new Array(4);
    for (var i = 0; i < 4; i++) {
        r = v % 256;
        v = parseInt((v - r) / 256);
        new Byte(ip, r);
    }
}

function internal__NetMask__setNetMask(by, bit) {
    for (var i = 0; i < 4; i++) {
        if (i == by) {
            for (var j = 0; j < 8; j++) {
                this.bytes[i].bits[j].setValue(j < bit ? 0 : 1);
            }
            this.bytes[i].updateHtml();
        } else {
            this.bytes[i].setValue(i < by ? 0 : 255);
            this.bytes[i].updateByEdit();
        }
    }
}

function internal__IPAddress__setIpAddressValue(v) {
    var i, r;
    for (i = 0; i < 4; i++) {
        r = v % 256;
        v = parseInt((v - r) / 256);
        this.bytes[i].setValue(r);
    }
}

function internal__IPAddress__setIpAddressTextValue(t) {
    var b = t.toString().split('.');
    for (var i = 0; i < 4; i++) this.bytes[3 - i].setValue(parseInt(b[i]));
}

function internal__Byte__initializeBits(by, v) {
    var r, risp = new Array(8);
    for (var i = 0; i < 8; i++) {
        r = v % 2;
        v = parseInt((v - r) / 2);
        new Bit(by, r);
    }
}

function internal__Byte__setByteValue(val) {
    var i, r;
    for (i = 0; i < 8; i++) {
        r = val % 2;
        val = parseInt((val - r) / 2);
        this.bits[i].setValue(r);
    }
    this.updateHtml();
}

function internal__Byte__getTextFromBits() { return this.getValue().toString() }

function internal__Byte__getValueFromBits() {
    var tot = 0, peso = 1;
    for (var i = 0; i < 8; i++) {
        tot += parseInt(this.bits[i].getValue() * peso);
        peso = peso * 2;
    }
    return tot;
}

function internal__Byte__getBitsString() {
    var risp = ''; for (var i = 7; i > -1; i--) risp += this.bits[i].getText(); return risp;
}

function internal__Bit__getHtmlButton() {
    var by = this.getByte();
    var ip = by.getIp();
    var ipt = ip.getType()
    var risp = '<div id="' + this.getName() + '" class="bit" onclick="';
    if (ipt == 'ip') risp += "internal__ipsCollection[" + ip.getIndex() + "].bytes[" + by.getIndex() + "].bits[" + this.getIndex() + "].setReverse();";
    if (ipt == 'mask') risp += "internal__ipsCollection[" + ip.getIndex() + "].setNetMask(" + by.getIndex() + "," + this.getIndex() + ");";
    risp += '">' + this.getText() + '</div>';
    return risp;
}

function internal__NetMask__getNetMaskLength() {
    var bs = this.bytes;
    var invert = -1;
    var tot = 0;
    var prev = -1;
    var bit = 0;
    for (var i = 3; i > -1; i--) {
        for (var j = 7; j > -1; j--) {
            bit = bs[i].bits[j].getValue();
            tot += bit;
            if (prev != bit) invert++;
            prev = bit;
        }
    }
    return invert > 1 ? false : tot;
}