From 25163db2bf64d33ba9a4eb277dcef7455f23a5da Mon Sep 17 00:00:00 2001
From: cryptozoidberg <crypto.zoidberg@gmail.com>
Date: Mon, 18 Apr 2022 19:03:14 +0200
Subject: [PATCH] implemented non-blocking api for javascript calls

---
 src/common/threads_pool.h                    |  4 +--
 src/gui/qt-daemon/application/mainwindow.cpp | 38 +++++++++++++++++++-
 src/gui/qt-daemon/application/mainwindow.h   |  9 ++++-
 3 files changed, 47 insertions(+), 4 deletions(-)

diff --git a/src/common/threads_pool.h b/src/common/threads_pool.h
index 4e4e3905..5870ea31 100644
--- a/src/common/threads_pool.h
+++ b/src/common/threads_pool.h
@@ -51,11 +51,11 @@ namespace utils
       int num_threads = std::thread::hardware_concurrency();
       this->init(num_threads);
     }
-    void init(unsigned int num_threads)
+    void init(size_t num_threads)
     {
       m_is_stop = false;
 
-      for (int i = 0; i < num_threads; i++)
+      for (size_t i = 0; i < num_threads; i++)
       {
         m_threads.push_back(std::thread([this]() {this->worker_func(); }));
       }
diff --git a/src/gui/qt-daemon/application/mainwindow.cpp b/src/gui/qt-daemon/application/mainwindow.cpp
index 030a8d20..77e558cb 100644
--- a/src/gui/qt-daemon/application/mainwindow.cpp
+++ b/src/gui/qt-daemon/application/mainwindow.cpp
@@ -100,6 +100,7 @@ MainWindow::MainWindow()
   , m_system_shutdown(false)
   , m_view(nullptr)
   , m_channel(nullptr)
+  , m_ui_dispatch_id_counter(0)
 {
 #ifndef _MSC_VER
   //workaround for macos broken tolower from std, very dirty hack
@@ -415,7 +416,7 @@ bool MainWindow::init(const std::string& html_path)
   //QtWebEngine::initialize();
   init_tray_icon(html_path);
   set_html_path(html_path);
-
+  m_threads_pool.init(2);
   m_backend.subscribe_to_core_events(this);
 
   bool r = QSslSocket::supportsSsl();
@@ -920,6 +921,41 @@ QString MainWindow::start_backend(const QString& params)
   CATCH_ENTRY_FAIL_API_RESPONCE();
 }
 
+QString MainWindow::sync_call(const QString& func_name, const QString& params)
+{
+  if (func_name == "transfer")
+  {
+    return this->transfer(params);
+  }
+  else if (func_name == "test_call")
+  {
+    return params;
+  }
+  else
+  {
+    return QString(QString() + "{ \"status\": \"Method '" + func_name  + "' not found\"}");
+  }
+}
+
+QString MainWindow::async_call(const QString& func_name, const QString& params)
+{
+
+  uint64_t job_id = m_ui_dispatch_id_counter++;
+  QString method_name = func_name;
+  QString argements = params;
+
+  auto async_callback = [this, method_name, argements, job_id]()
+  {
+    QString res_str = this->sync_call(method_name, argements);
+    this->dispatch_async_call_result(std::to_string(job_id).c_str(), res_str);  //general function
+  };
+
+  m_threads_pool.add_job(async_callback);
+  LOG_PRINT_L2("[UI_ASYNC_CALL]: started " << method_name.toStdString() << ", job id: " << job_id);
+  return QString::fromStdString(std::string("{ \"job_id\": ") + std::to_string(job_id) + "}");
+}
+
+
 bool MainWindow::update_wallet_status(const view::wallet_status_info& wsi)
 {
   TRY_ENTRY();
diff --git a/src/gui/qt-daemon/application/mainwindow.h b/src/gui/qt-daemon/application/mainwindow.h
index c7e4c70b..f01dbe93 100644
--- a/src/gui/qt-daemon/application/mainwindow.h
+++ b/src/gui/qt-daemon/application/mainwindow.h
@@ -18,6 +18,8 @@
 #include "currency_core/offers_services_helpers.h"
 #endif
 
+#include "common/threads_pool.h"
+
 QT_BEGIN_NAMESPACE
 class QWebEngineView;
 class QLineEdit;
@@ -180,6 +182,9 @@ public:
   QString is_remnotenode_mode_preconfigured();
   QString start_backend(const QString& params);
 
+  QString async_call(const QString& func_name, const QString& params);
+  QString sync_call(const QString& func_name, const QString& params);
+
   //for test purposes onlys
   QString request_dummy();
 
@@ -193,11 +198,11 @@ signals:
   void wallet_sync_progress(const QString str);
   void handle_internal_callback(const QString str, const QString callback_name);
   void update_pos_mining_text(const QString str);
-  void do_dispatch(const QString status, const QString params);  //general function
   void on_core_event(const QString method_name);  //general function
   void set_options(const QString str);  //general function
   void handle_deeplink_click(const QString str);
   void handle_current_action_state(const QString str);
+  void dispatch_async_call_result(const QString id, const QString resp);  //general function
 
 private:
   //--------------------  i_core_event_handler --------------------
@@ -259,6 +264,8 @@ private:
   std::atomic<bool> m_gui_deinitialize_done_1;
   std::atomic<bool> m_backend_stopped_2;
   std::atomic<bool> m_system_shutdown;
+  std::atomic<uint64_t> m_ui_dispatch_id_counter;
+  utils::threads_pool m_threads_pool;
 
   std::string m_master_password;