feat: New Sessions

include/mapper.hpp

@@ -0,0 +1,45 @@
+#ifndef MAPPER_HPP
+#define MAPPER_HPP
+
+#include <cstdint>
+#include <cstddef>
+
+#include "parcer.h"
+#include "server_structs.h"
+
+// INFO: This is basically a identity mapper between raw byte buffer and structs defined in server_structs.h
+class Mapper {
+  private:
+	const uint_least8_t *buffer;
+	size_t buffer_size;
+	size_t offset;
+	bool ok;
+
+  public:
+    Mapper(const uint_least8_t *buf, size_t buf_size);
+
+    uint8_t get_message_type();
+    bool is_ok() const { return ok; }
+
+    void parse_new_session(trackAtributes &track);
+    void parse_new_connection(carAtributes &car);
+    void parse_connection_closed(carAtributes &car);
+    void parse_car_update(carAtributes &car);
+    void parse_car_info(carAtributes &car);
+    void parse_lap_completed(uint8_t &car_id, uint32_t &lap_time, uint32_t &cuts);
+    void parse_collision_event(uint8_t &car1, uint8_t &car2, uint8_t &event_type);
+    void parse_chat(uint8_t &car_id, char *message, size_t max_len);
+    void parse_client_loaded(uint8_t &car_id);
+    
+    void set_size(size_t size) { this->buffer_size = size; }
+    void update_buffer(const uint8_t *buf, size_t size) {
+        this->buffer = buf;
+        this->buffer_size = size;
+        reset();
+    }
+  private:
+    // INFO: Reset the offset to 1 because the first byte is message type 
+    void reset() { offset = 1; ok = true; }
+};
+
+#endif // MAPPER_HPP

include/parcer.h

@@ -27,6 +27,10 @@ u_int8_t read_uint8(const u_int8_t *buf, size_t recv_len, size_t *offset, int *o
 // Advances the offset by 2 bytes.
 u_int16_t read_uint16(const u_int8_t *buf, size_t recv_len, size_t *offset, int *ok);
 
+// Reads a 16-bit unsigned integer from the buffer in little-endian byte order.
+// Advances the offset by 2 bytes.
+u_int16_t read_uint16_le(const u_int8_t *buf, size_t recv_len, size_t *offset, int *ok);
+
 // Reads a 32-bit unsigned integer from the buffer in network byte order.
 // Advances the offset by 4 bytes.
 u_int32_t read_uint32(const u_int8_t *buf, size_t recv_len, size_t *offset, int *ok);