[JS] DossierItem LinkedTo based on list of array of external ids

helper.js

function getLinkedToInfoByArrayOfIds(ids) {
    if(ids.length < 1) {
        return [];
    }
    var group = {
        'person'       : 'relation',
        'organization' : 'relation',
        'project'      : 'project',
        'sales'        : 'sales'
    };
    var linkedTo = {
        'person'       : 'person_id',
        'organization' : 'organization_id',
        'project'      : 'project_id',
        'sales'        : 'sales_id'
    };

    // Group them by their matched grouping. [ 'person:abc', 'org:abc' => ['relation' => ['person:abc', 'org:abc'] ]
    var groupedData = {};
    for(var i = 0; i < ids.length; i++) {
        var split = ids[i].split(':');
        if(!(group[split[0]] in groupedData)) {
            groupedData[group[split[0]]] = [];
        }
        groupedData[group[split[0]]].push(ids[i]);
    }

    // Get the highest count of groupedData (['relation' => ['person:abc', 'org:abc'], 'project' => ['project:abc']] returns 2
    var max = 0;
    var keys = Object.keys(groupedData);
    for(var j = 0; j < keys.length; j++) {
        if(groupedData[keys[j]].length > max) {
            max = groupedData[keys[j]].length;
        }
    }

    // Loop the maximum times of occurences, then assign items to each array, and unset them for the next loop
    var result = {};
    for(var k = 0; k < max; k++) {
        for(var j = 0; j < keys.length; j++) {
            if(groupedData[keys[j]].length) {
                var id = groupedData[keys[j]].shift();
                var split = id.split(':');
                var key = linkedTo[split[0]];
                if(!(k in result)) {
                    result[k] = {};
                }
                result[k][key] = id;
            }
        }
    }

    return result;
}

var result = getLinkedToInfoByArrayOfIds([
    'organization:111',
    'person:222',
    'project:333',
    'sales:444',
    'person:555',
    'project:666'
]);

// Expected: Array[3] - [ {org_id: org:111, project_id: project:333, sales_id: sales:444} , { person_id: person:222, project_id: project:666 } , { person_id: person: 555 } ]