package com.messagebird;

import java.util.Arrays;

/**

* Holds request data needed to calculate a signature hash for incoming

* webhooks.

*/

public class Request {

private final String timestamp;

private final String queryParameters;

private final byte[] data;

private final static String QUERY_PARAMETERS_DELIMITER = "&";

/**

* Constructs a new request instance.

*

* @param timestamp Timestamp provided in the MessageBird-Request-Timestamp

* header.

* @param queryParameters Query parameters in abc=foo&def=ghi format.

* @param data Raw body of this request.

*/

public Request(String timestamp, String queryParameters, byte[] data) {

if (timestamp == null || timestamp.isEmpty()) {

throw new IllegalArgumentException("Timestamp can not be null or empty");

}

this.timestamp = timestamp;

this.queryParameters = queryParameters;

this.data = data;

}

String getTimestamp() {

return timestamp;

}

String getSortedQueryParameters() {

String[] params = queryParameters.split(QUERY_PARAMETERS_DELIMITER);

Arrays.sort(params);

StringBuilder sortedParamsAccumulator = new StringBuilder();

for (int i = 0, paramsLength = params.length; i < paramsLength; i++) {

sortedParamsAccumulator.append(params[i]);

if (i < paramsLength - 1) {

sortedParamsAccumulator.append(QUERY_PARAMETERS_DELIMITER);

}

}

return sortedParamsAccumulator.toString();

}

byte[] getData() {

return data;

}

}