feat: add back new block add event handling (#32)

src/logos_blockchain_module.cpp

@@ -205,8 +205,7 @@ void LogosBlockchainModule::on_new_block_callback(const char* block) {
         fprintf(stderr, "Received new block: %s\n", block);
         json j;
         j["block"] = std::string(block);
-        if (s_instance->emitEvent)
+        s_instance->newBlock(j.dump());
-            s_instance->emitEvent("newBlock", j.dump());
         // SAFETY:
         // We are getting an owned pointer here which is freed after this callback is called, so there is no need to
         // free the resource here as we are copying the data!

src/logos_blockchain_module.h

@@ -1,10 +1,11 @@
 #pragma once
 
 #include <cstdint>
-#include <functional>
 #include <string>
 #include <vector>
 
+#include <logos_module_context.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -13,16 +14,11 @@ extern "C" {
 }
 #endif
 
-class LogosBlockchainModule {
+class LogosBlockchainModule : public LogosModuleContext {
 public:
     LogosBlockchainModule();
     ~LogosBlockchainModule();
 
-    // Wired automatically by the generated glue layer.
-    // Call this to emit named events to other modules / the host application.
-    // Data is a JSON-encoded string (object or array).
-    std::function<void(const std::string& eventName, const std::string& data)> emitEvent;
-
     // ---- Node ----
 
     // Lifecycle
@@ -57,6 +53,11 @@ public:
     // Cryptarchia
     std::string get_cryptarchia_info();
 
+logos_events:
+    // Fired by on_new_block_callback when the Rust node delivers a new block.
+    // blockJson is the full block serialized as JSON.
+    void newBlock(const std::string& blockJson);
+
 private:
     LogosBlockchainNode* node = nullptr;