reverting version

include/Module/Telnet.h

@@ -0,0 +1,51 @@
+#pragma once
+
+#include "Global.h"
+
+#include "Module/Module.h"
+#include "Module/Terminal.h"
+#include "Module/CommandShell.h"
+
+#include <functional>
+
+enum TelnetEvent_t {
+    TE_CONNECTED,
+    TE_DISCONNECTED
+};
+
+typedef std::function<void(TelnetEvent_t, WiFiClient*)> TelnetEventHandler;
+
+class Telnet : public Module {
+   public:
+    Telnet(uint16_t port) : _port{port}, _lastConnected{false} {};
+
+   public:
+    void setEventHandler(TelnetEventHandler);
+    void sendData(const String&);
+    bool hasClient();
+    bool isShellActive();
+    void setCommandShell(CommandShell*);
+
+   protected:
+    bool onInit() override;
+    void onEnd() override;
+    bool onStart() override;
+    void onStop() override;
+    void onLoop() override;
+
+   private:
+    void onConnect();
+    void onDisconnect();
+    void onData();
+    void onOpen();
+    void onClose();
+
+   private:
+    TelnetEventHandler _eventHandler;
+    uint16_t _port;
+    bool _lastConnected;
+    WiFiClient _client;
+    WiFiServer* _server;
+    Terminal* _term;
+    CommandShell* _shell;
+};