private BrainCloudWrapper _bc;
private string _wrapperName = "default";

void LogError(int status, int code, string error, object cbObject)
{
    Debug.Log(String.Format("An error occured {0} : {1} ({2})", status, error, code));
}

void Start() {
    // Unity
    GameObject go = new GameObject();
    _bc = go.AddComponent<BrainCloudWrapper>();
    _bc.WrapperName = _wrapperName; // optionally set a wrapper-name
    _bc.Init(); // extra data, such as: _appId, _secret and _appVersion, is taken from the brainCloud Unity Plugin.
    DontDestroyOnLoad(go); // keep the brainCloud game object through scene changes   
    
    _bc.AuthenticateAnonymous((response, cbObject) =>
    {
        CheckTheItemCatalog();
    }, LogError);
}

List<string> itemsToAward = new List<string>();

// Get a list of items from the Item Catalog
void CheckTheItemCatalog()
{
    var context = BrainCloud.JsonFx.Json.JsonWriter.Serialize(new Dictionary<string, object>
    {
        {"pagination", new Dictionary<string, object> {
                {"rowsPerPage", 50},
                {"pageNumber", 1}
            }
        },
        {"searchCriteria", new Dictionary<string, object> {
                {"category", "collectable"}, // Choose a category of item
                {"pState", "PUBLISHED"}      // Ensure it's published  
            }
        },
        {"sortCriteria", new Dictionary<string, object> {
                {"createdAt", 1},
                {"updatedAt", -1}
            }
        }
    });
    
    _bc.ItemCatalogService.GetCatalogItemsPage(context, (response, cbObject) =>
    {
        var jsonMessage =
            (Dictionary<string, object>) BrainCloud.JsonFx.Json.JsonReader.Deserialize(response);
        var jsonData = (Dictionary<string, object>) jsonMessage["data"];
        var results = (Dictionary<string, object>) jsonData["results"];
        var items = (Dictionary<string, object>[]) results["items"];

        if (items.Length > 0)
        {
            var random = new System.Random();
            
            // Randomly grab two items from the first page of the catalog
            itemsToAward.Add((string)items[random.Next(items.Length)]["defId"]);
            itemsToAward.Add((string)items[random.Next(items.Length)]["defId"]);
            
            AwardItems();
        }
    }, LogError);
}

// Award two of those items from the user
void AwardItems()
{
    int called = 0;
    foreach (var itemDefId in itemsToAward)
    {
        var quantity = 1;
        var includeDef = false;
        
        _bc.UserItemsService.AwardUserItem(itemDefId, quantity, includeDef, (response, cbObject) =>
        {
            called++;

            // Once all items are awarded, let's check the inventory
            if (called == itemsToAward.Count)
            {
                ReadUserItems();
            }
        }, (status, code, error, cbObject) =>
        {
            LogError(status, code, error, cbObject);
        });

    }

}

List<string> itemsToDrop = new List<string>();
// Get a list of items from the user's inventory
void ReadUserItems()
{
    var context = BrainCloud.JsonFx.Json.JsonWriter.Serialize(new Dictionary<string, object>
    {
        {"pagination", new Dictionary<string, object> {
                {"rowsPerPage", 50},
                {"pageNumber", 1}
            }
        },
        {"searchCriteria", new Dictionary<string, object> {
                // Our search criteria will by empty, to grab all possible items
            }
        },
        {"sortCriteria", new Dictionary<string, object> {
                {"createdAt", 1},
                {"updatedAt", -1}
            }
        }
    });


    var includeDef = true;
    _bc.UserItemsService.GetUserItemsPage(context, includeDef, (response, cbObject) =>
    {
        var jsonMessage =
            (Dictionary<string, object>) BrainCloud.JsonFx.Json.JsonReader.Deserialize(response);
        var jsonData = (Dictionary<string, object>) jsonMessage["data"];
        var results = (Dictionary<string, object>) jsonData["results"];
        var items = (Dictionary<string, object>[]) results["items"];

        if (items.Length > 0)
        {
            var random = new System.Random();
            
            // Randomly grab one item from the first page of the user's items
            itemsToDrop.Add((string)items[random.Next(items.Length)]["itemId"]);
            
            DropItem();
        }
    }, LogError);
}

// Drop one of those items
void DropItem()
{
    foreach (var itemDefId in itemsToDrop)
    {
        var quantity = 1;
        var includeDef = false;
        
        _bc.UserItemsService.DropUserItem(itemDefId, quantity, includeDef, (response, cbObject) => { }, (status, code, error, cbObject) =>
        {
            LogError(status, code, error, cbObject);
        });
    } }