Better output

src/Pager.hpp

@@ -24,6 +24,7 @@ public:
     Pager &operator-=(int number);
 
     Page &operator*();
+
     Page *operator->();
 
     void set(int number);

src/Tui.cpp

@@ -50,6 +50,7 @@ void printHelp() {
 }
 
 void Tui::run() {
+    clear_console();
     std::cout << m_pager->str_pretty() << std::endl;
     for (;;) {
         std::cout << "Enter a command: ";
@@ -62,32 +63,34 @@ void Tui::run() {
             continue;
         }
 
-
         bool should_exit = false;
-        auto visitor = [this, &should_exit]<typename T0>(T0 &&arg) {
+        bool should_output = false;
+        auto visitor = [this, &should_exit, &should_output]<typename T0>(T0 &&arg) {
             using T = std::decay_t<T0>;
 
             if constexpr (std::is_same_v<T, Command::None>) {
                 std::cout << "Invalid command!" << std::endl;
             } else if constexpr (std::is_same_v<T, Command::Next>) {
                 try {
+                    std::cout << "Fetching..." << std::endl;
                     m_pager += 1;
                 } catch (const std::runtime_error &e) {
                     std::cout << e.what() << std::endl;
                     return;
                 }
-                std::cout << m_pager->str_pretty() << std::endl;
+                should_output = true;
             } else if constexpr (std::is_same_v<T, Command::Previous>) {
                 try {
+                    std::cout << "Fetching..." << std::endl;
                     m_pager -= 1;
                 } catch (const std::runtime_error &e) {
                     std::cout << e.what() << std::endl;
                     return;
                 }
-                std::cout << m_pager->str_pretty() << std::endl;
+                should_output = true;
             } else if constexpr (std::is_same_v<T, Command::Refresh>) {
                 m_pager.clear();
-                std::cout << m_pager->str_pretty() << std::endl;
+                should_output = true;
             } else if constexpr (std::is_same_v<T, Command::Exit>) {
                 should_exit = true;
             } else if constexpr (std::is_same_v<T, Command::Help>) {
@@ -96,16 +99,32 @@ void Tui::run() {
                 const Command::Seek &seek = arg;
                 const int number = seek.number;
                 try {
+                    std::cout << "Fetching..." << std::endl;
                     m_pager.seek(number);
                 } catch (const std::runtime_error &e) {
                     std::cout << e.what() << std::endl;
                     return;
                 }
-                std::cout << m_pager->str_pretty() << std::endl;
+                should_output = true;
             }
         };
         std::visit(visitor, command);
         if (should_exit)
             return;
+
+        clear_console();
+        if (should_output)
+            std::cout << m_pager->str_pretty() << std::endl;
     }
 }
+
+void Tui::clear_console() {
+    const auto CMD =
+#ifdef _WIN32 || _WIN64
+             "cls";
+#else
+            "clear";
+#endif
+
+    system(CMD);
+}

src/Tui.hpp

@@ -16,6 +16,10 @@ public:
 
     void run();
 
+private:;
+
+    static void clear_console();
+
 private:
     Pager m_pager;
 };