added methods for Client to send and receive messages

include/tcp-chat.h

@@ -1,5 +1,7 @@
 #pragma once
 #include "tlibc/errors.h"
+#include "tlibc/time.h"
+#include "tlibc/magic.h"
 
 /// requires tlibc and tlibtoml init
 Result(void) TcpChat_init();
@@ -63,6 +65,7 @@ typedef void (*LogFunction_t)(void* logger, cstr context, LogSeverity severity,
 #define logWarn(format, ...)  log(LogSeverity_Warn,  format ,##__VA_ARGS__)
 #define logError(format, ...) log(LogSeverity_Error, format ,##__VA_ARGS__)
 
+
 //////////////////////////////////////////////////////////////////////////////
 //                                                                          //
 //                                  Server                                  //
@@ -82,6 +85,7 @@ void Server_free(Server* server);
 
 Result(void) Server_run(Server* server);
 
+
 //////////////////////////////////////////////////////////////////////////////
 //                                                                          //
 //                                  Client                                  //
@@ -117,3 +121,15 @@ Result(void) Client_register(Client* self, i64* out_user_id);
 
 /// Authorize on connected server
 Result(void) Client_login(Client* self, i64* out_user_id, i64* out_landing_channel_id);
+
+/// @param out_timestamp timestamp received from server
+/// @return message id received from server
+Result(i64) Client_sendMessage(Client* self, i64 channel_id, Array(u8) content, DateTime* out_timestamp);
+
+/// Receive a bunch of messages from the server to a client internal buffer
+/// @return number of messages received
+Result(u32) Client_receiveMessageBlock(Client* self, i64 channel_id, i64 first_message_id, u32 messages_count);
+
+/// Read message saved in client internal buffer.
+/// @return number of bytes written in dst_content
+Result(u32) Client_popMessage(Client* self, Array(u8) dst_content, i64* message_id, i64* sender_id, DateTime* timestamp_utc);