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/*
*
 digitalData is used as an example of a JSON analytics object that we want to insert data into via addJsonNodes()
 *
 */
digitalData = {
    pageInstanceID: "Boe:MyBoeingFleet:Toolbox:Home-staging",
    page: {
        pageInfo: {
            pageName: "Boe:MyBoeingFleet:Toolbox:Home",
            destinationURL: document.location,
            language: "en-us",
            geoRegion: "us"
        },
        category: {
            primaryCategory: "toolbox",
            subCategory1: "asdf",
            subCategory2: "",
            subCategory3: "",
            pageType: "universal"
        },
        user: {
            userID: "12345",
            userAccessLevel: "level 1",
            userAirlineCode: "dl",
            userPersona: "manager"
        }
    }
};
/*
*
 newData is used as an example of a JSON analytics object that we want to insert into digitalData via addJsonNodes()
 *
 */



var newData=[
    {"name":"id", "value":"2"},
    {"name":"digitalData.page.category.subCategory1", "value":"first tool"},
    {"name":"digitalData.page.pageInfo.zip","value":"97217"}
]

/**
 * Adds one or more elements to an existing JSON object. If the element exists it will overwrite the value. If the element is a new object, or two, they will be created
 * The format of the JSON elements to be added:

    var newData=[
        {"name":"digitalData.id", "value":"2"},
        {"name":"digitalData.page.category.subCategory1", "value":"first tool"}
    ]

    It is a collection of "element" nodes. Each node has two attributes: name and value.

    name: [is the location of the element in the JSON it should be added. Include the object name. ex: digitalData
    value: [is the value to be written]

 * @param {object} dataObj  [the JSON object where the data should be inserted]
 * @param {array} elements [the data that should be inserted into dataObj, for example, see newData above]
 * @return {nothing}
 */
function addJsonNodes(dataObj, elements) {
    // Loop through the elements to be added
    for (var e in elements) {
        //Grab the name/location of the element to be added.
        aNodePath = elements[e].name.split(".").slice(1,elements[e].length);
        var obj = dataObj||{};
        // Dig down into dataObj to see if we need to create a new object or assign the value
        for (var i in aNodePath) {
            // Not the end of the object.
            if(i!=aNodePath.length-1){
                //Is there a value? If not dig deeper
                if (obj === null || typeof obj[aNodePath[i]] === 'undefined'){
                    //console.info("created: ", aNodePath[i], " object: ", obj[aNodePath[i]]   );
                    obj[aNodePath[i]] = {};
                }
                // Set the object equal to the next level in aNodePath
                obj = obj[aNodePath[i]];
            }
            // The end of the object
            else{
                // Set the value to the value in the elements param
                obj[aNodePath[i]] = elements[e].value;
                //Reset object back to the original object
                obj = dataObj;
            }
        }
    }
}

//Usage
addJsonNodes(digitalData,newData);