public void LoadMoreResults()
{
offset += offsetStep;
curOperationType = RequestOperationType.LoadMoreItems;
SubmitQuery();
}
public void SubmitNewSearch(string _keyword)
{
keyword = _keyword;
offset = 0;
canLoadMoreItems = false;
curOperationType = RequestOperationType.LoadNewItems;
SubmitQuery();
}
private IEnumerator SubmitQueryCoroutine()
{
//don't send too many queries per second
//when rapidly typing in the search bar make sure 'minQueryDelay' seconds has passed since the last character
if (curOperationType == RequestOperationType.LoadNewItems)
{
yield return(new WaitForSeconds(minQueryDelay));
}
//don't query empty strings
if (keyword == "")
{
emptyQueryEvent.Invoke();
curOperationType = RequestOperationType.Idle;
//let the animation fade out the results
yield return(new WaitForSeconds(0.3f));
SearchResultsView.Instance.ResetView();
yield break;
}
//build the request url string and send
string requestURL = string.Format(
"{0}?q={1}&offset={2}&limit={3}&{4}&{5}",
baseURL, //0
keyword, //1
offset, //2
limit, //3
apiCreds, //4
string.Join("&", standardParams) //5
);
DownloadHandler responseHandler = new DownloadHandlerBuffer();
UnityWebRequest queryRequest = new UnityWebRequest(requestURL, "GET", responseHandler, null);
UnityWebRequestAsyncOperation asyncOp = queryRequest.SendWebRequest();
asyncOp.completed += ReceiveResponse;
queryCoroutine = null;
if (curOperationType == RequestOperationType.LoadMoreItems)
{
loadMoreResultsSentEvent.Invoke();
}
//I'm loading new results
else if (curOperationType == RequestOperationType.LoadNewItems)
{
newQuerySentEvent.Invoke();
}
yield break;
}
protected void ReceiveResponse(AsyncOperation asyncOp)
{
UnityWebRequest queryRequest = ((UnityWebRequestAsyncOperation)asyncOp).webRequest;
if (!string.IsNullOrEmpty(queryRequest.error))
{
ErrorResultView.Instance.UpdateView(queryRequest.error);
errorReceiveEvent.Invoke();
}
else
{
//extract the data from the response
string responseString = Encoding.UTF8.GetString(queryRequest.downloadHandler.data);
JSONNode responseJSON = JSON.Parse(responseString);
JSONNode meta = responseJSON["meta"];
JSONNode data = responseJSON["data"];
//invoke events only if the search keyword was not changed since this request was sent
//otherwise disregard this response
string queryKeyword = meta["q"];
if (queryKeyword == keyword)
{
int indexOfLastItem = meta["offset"].AsInt + (int)meta["limit"].AsInt;
int itemCount = meta["count"].AsInt;
canLoadMoreItems = indexOfLastItem < itemCount;
//got some items
if (data.Count > 0)
{
SearchResultsView.Instance.ReceiveModels(data);
itemsReceivedEvent.Invoke();
}
//got no items :(
else
{
noItemsReceivedEvent.Invoke();
}
}
else
{
Debug.Log("Disregarding a response. Reason: new keyword");
}
}
curOperationType = RequestOperationType.Idle;
}