src/darwin/Framework/CHIP/templates/partials/MTRCallbackBridge.zapt

{{#if header}}
{{#*inline "callbackType"}}
  {{#if partial-type}}
    {{#if (isStrEqual partial-type "Command")}}
      {{> @partial-block}}Type
    {{else}}
      {{> @partial-block}}
    {{/if}}
  {{else}}
    {{> @partial-block}}
  {{/if}}
{{/inline}}
class MTR{{> @partial-block}}Bridge : public MTRCallbackBridge<{{>callbackType}}>
{
public:
    MTR{{> @partial-block}}Bridge(dispatch_queue_t queue, ResponseHandler handler, bool keepAlive = false)
      : MTRCallbackBridge<{{>callbackType}}>(queue, handler, OnSuccessFn, keepAlive)
      {};

    MTR{{> @partial-block}}Bridge(dispatch_queue_t queue, ResponseHandler handler, MTRActionBlock action, bool keepAlive = false)
      : MTRCallbackBridge<{{>callbackType}}>(queue, handler, action, OnSuccessFn, keepAlive)
      {};

    static void OnSuccessFn(void * context
      {{#if partial-type}}
        {{#if (isStrEqual partial-type "Status")}}
        {{! No more args in this case }}
        {{else if (isStrEqual partial-type "Command")}}
        , const chip::app::Clusters::{{asUpperCamelCase parent.name}}::Commands::{{asUpperCamelCase name}}::DecodableType & data
        {{else if (isStrEqual partial-type "CommandStatus")}}
        , const chip::app::DataModel::NullObjectType &
        {{else}}
        UNEXPECTED PARTIAL TYPE
        {{/if}}
      {{else}}
      , {{zapTypeToDecodableClusterObjectType type ns=ns isArgument=true}} value
      {{/if}}
    );
};

{{#unless partial-type}}
class MTR{{> @partial-block}}SubscriptionBridge : public MTR{{> @partial-block}}Bridge
{
public:
    MTR{{> @partial-block}}SubscriptionBridge(dispatch_queue_t queue, ResponseHandler handler, MTRActionBlock action, MTRSubscriptionEstablishedHandler establishedHandler)
      : MTR{{> @partial-block}}Bridge(queue, handler, action, true),
        mEstablishedHandler(establishedHandler)
      {}

    static void OnSubscriptionEstablished(void * context);

private:
    MTRSubscriptionEstablishedHandler mEstablishedHandler;
};
{{/unless}}

{{else}}
void MTR{{> @partial-block}}Bridge::OnSuccessFn(void * context
  {{#if partial-type}}
    {{#if (isStrEqual partial-type "Status")}}
    {{! No more args in this case }}
    {{else if (isStrEqual partial-type "Command")}}
    , const chip::app::Clusters::{{asUpperCamelCase parent.name}}::Commands::{{asUpperCamelCase name}}::DecodableType & data
    {{else if (isStrEqual partial-type "CommandStatus")}}
    , const chip::app::DataModel::NullObjectType &
    {{else}}
    UNEXPECTED PARTIAL TYPE
    {{/if}}
  {{else}}
  , {{zapTypeToDecodableClusterObjectType type ns=ns isArgument=true}} value
  {{/if}}
)
{
    {{#if partial-type}}
      {{#if (isStrEqual partial-type "Status")}}
      DispatchSuccess(context, nil);
      {{else if (isStrEqual partial-type "Command")}}
      auto * response = [MTR{{asUpperCamelCase parent.name}}Cluster{{asUpperCamelCase name}}Params new];
      {{#chip_cluster_response_arguments}}
      {
        {{>decode_value target=(concat "response." (asStructPropertyName label)) source=(concat "data." (asLowerCamelCase label)) cluster=parent.parent.name errorCode="OnFailureFn(context, err); return;" depth=0}}
      }
      {{/chip_cluster_response_arguments}}
      DispatchSuccess(context, response);
      {{else if (isStrEqual partial-type "CommandStatus")}}
      DispatchSuccess(context, nil);
      {{else}}
      UNEXPECTED PARTIAL TYPE
      {{/if}}
    {{else}}
    {{asObjectiveCType type ns}} objCValue;
    {{>decode_value target="objCValue" source="value" cluster=ns errorCode="OnFailureFn(context, err); return;" depth=0}}
    DispatchSuccess(context, objCValue);
    {{/if}}
};

{{#unless partial-type}}
void MTR{{> @partial-block}}SubscriptionBridge::OnSubscriptionEstablished(void * context)
{
     auto * self = static_cast<MTR{{> @partial-block}}SubscriptionBridge *>(context);
     if (!self->mQueue) {
         return;
     }

     if (self->mEstablishedHandler != nil) {
         dispatch_async(self->mQueue, self->mEstablishedHandler);
         // On failure, mEstablishedHandler will be cleaned up by our destructor,
         // but we can clean it up earlier on successful subscription
         // establishment.
         self->mEstablishedHandler = nil;
     }
}
{{/unless}}
{{/if}}