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Add nextPageAsync method #225

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Add nextPageAsync method #225

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86 changes: 63 additions & 23 deletions src/main/java/com/facebook/ads/sdk/APINodeList.java
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,7 @@
*/
package com.facebook.ads.sdk;

import com.google.common.util.concurrent.ListenableFuture;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
import java.net.URL;
Expand Down Expand Up @@ -59,39 +60,78 @@ public APINodeList<T> withAutoPaginationIterator(boolean autoPagination) {
return this;
}

private boolean prepareCallUsingNext(){
// App secret won't return with the 'next' URL. Need to append it
// for paging.
if (this.appSecret == null) {
this.request.setOverrideUrl(this.next);
return true;
} else {
try {
URL a = new URL(this.next);
String connector = a.getQuery() == null ? "?" : "&";
this.request.setOverrideUrl(
this.next +
connector +
"appsecret_proof=" +
this.appSecret
);
return true;
} catch (java.net.MalformedURLException e) {
return false;
}
}
}

private Map<String, Object> prepareCallWithExtraParams(int limit) {
if (after == null) return null;
this.request.setOverrideUrl(null);
Map<String, Object> extraParams = new HashMap<String, Object>();
if (limit > 0) extraParams.put("limit", limit);
extraParams.put("after", after);
return extraParams;
}

public APINodeList<T> nextPage() throws APIException {
return nextPage(0);
}

public ListenableFuture<APIResponse> nextPageAsync() throws APIException {
return nextPageAsync(0);
}

public ListenableFuture<APIResponse> nextPageAsync(int limit) throws APIException {
// First check if 'next' url is returned. If so, always use the it.
if (this.next != null) {
if(prepareCallUsingNext()) {
return request.executeAsyncBase();
} else {
return null;
}
}
Map<String, Object> extraParams = prepareCallWithExtraParams(limit);
if(extraParams != null) {
return request.executeAsyncBase(extraParams);
} else {
return null;
}
}

public APINodeList<T> nextPage(int limit) throws APIException {
// First check if 'next' url is retured. If so, always use the it.
// First check if 'next' url is returned. If so, always use the it.
if (this.next != null) {
// App secret won't return with the 'next' URL. Need to append it
// for paging.
if (this.appSecret == null) {
this.request.setOverrideUrl(this.next);
if(prepareCallUsingNext()) {
return (APINodeList<T>) request.execute();
} else {
try {
URL a = new URL(this.next);
String connector = a.getQuery() == null ? "?" : "&";
this.request.setOverrideUrl(
this.next +
connector +
"appsecret_proof=" +
this.appSecret
);
} catch (java.net.MalformedURLException e) {
return null;
}
}
return (APINodeList<T>) request.execute();
}
if (after == null) return null;
this.request.setOverrideUrl(null);
Map<String, Object> extraParams = new HashMap<String, Object>();
if (limit > 0) extraParams.put("limit", limit);
extraParams.put("after", after);
return (APINodeList<T>) request.execute(extraParams);
Map<String, Object> extraParams = prepareCallWithExtraParams(limit);
if(extraParams != null) {
return (APINodeList<T>) request.execute(extraParams);
} else {
return null;
}
}

public void setCursors(String before, String after) {
Expand Down