/// <summary>
/// Gets all claim offers in the provided wallet matching the specified filter.
/// </summary>
/// <remarks>
/// <para>
/// Claim offers stored with the <see cref="ProverStoreClaimOfferAsync(Wallet, string)"/> can be
/// retrieved by searching on the DID of the issuer and/or the schema sequence number. To filter
/// the claim offers a <paramref name="filterJson"/> parameter must be provided with a JSON
/// string which can include the following members:
/// <code>
/// {
/// "issuer_did": string,
/// "schema_seq_no": string
/// }
/// </code>
/// </para>
/// <para>
/// The return value from this method is a JSON string that contains the list of matching claim
/// offers in the following format:
/// <code>
/// {
/// [
/// {
/// "issuer_did": string,
/// "schema_seq_no": string
/// },
/// ...
/// ]
/// }
/// </code>
/// </para>
/// </remarks>
/// <param name="wallet">The wallet containing the claims to get.</param>
/// <param name="filterJson">The filter JSON.</param>
/// <returns>An asynchronous <see cref="Task{T}"/> that, when the operation completes, resolves
/// to a JSON string with a list of claim offers matching the filter.</returns>
public static Task <string> ProverGetClaimOffersAsync(Wallet wallet, string filterJson)
{
var taskCompletionSource = new TaskCompletionSource <string>();
var commandHandle = PendingCommands.Add(taskCompletionSource);
var commandResult = IndyNativeMethods.indy_prover_get_claim_offers(
commandHandle,
wallet.Handle,
filterJson,
_proverGetClaimOffersCallback
);
CallbackHelper.CheckResult(commandResult);
return(taskCompletionSource.Task);
}
