'use strict';

var parsers = require('../parsers.js');
var TYPES = parsers.TYPES;

var isValid = function (v) {
    if (v.toLowerCase() === "auto") {
        return true;
    }
    var type = parsers.valueType(v);
    return type === TYPES.LENGTH || type === TYPES.PERCENT || (type === TYPES.INTEGER && (v === '0' || v === 0));
};

var parser = function (v) {
    var V = v.toLowerCase();
    if (V === "auto") {
        return V;
    }
    return parsers.parseMeasurement(v);
};

var mySetter = parsers.implicitSetter('margin', '', isValid, parser);
var myGlobal = parsers.implicitSetter('margin', '', function () {
    return true;
}, function (v) {
    return v;
});

module.exports.definition = {
    set: function (v) {
        if (typeof v === "number") {
            v = String(v);
        }
        if (typeof v !== "string") {
            return;
        }
        var V = v.toLowerCase();
        switch (V) {
        case 'inherit':
        case 'initial':
        case 'unset':
        case '':
            myGlobal.call(this, V);
            break;

        default:
            mySetter.call(this, v);
            break;
        }
    },
    get: function () {
        return this.getPropertyValue('margin');
    },
    enumerable: true,
    configurable: true
};

module.exports.isValid = isValid;
module.exports.parser = parser;