#ifndef FRAMEWORK_IPC_COMMANDMESSAGEIF_H_
#define FRAMEWORK_IPC_COMMANDMESSAGEIF_H_

#include <framework/ipc/MessageQueueMessageIF.h>

#define MAKE_COMMAND_ID( number )	((MESSAGE_ID << 8) + (number))
typedef uint16_t Command_t;

// TODO: actually, this interface propably does not have to implement
// MQM IF, because there is a getter function for the internal message..
// But it is also convenient to have the full access to all MQM IF functions.
// That way, I can just pass CommandMessages to functions expecting a MQM IF.
// The command message implementations just forwards the calls. Maybe
// we should just leave it like that.
class CommandMessageIF: public MessageQueueMessageIF {
public:
	virtual ~CommandMessageIF() {};

	/**
	 * A command message shall have a uint16_t command ID field.
	 * @return
	 */
	virtual Command_t getCommand() const = 0;
	/**
	 * A command message shall have a uint8_t message type ID field.
	 * @return
	 */
	virtual uint8_t getMessageType() const = 0;

	/**
	 * This function is used to get a pointer to the internal message, as
	 * the command message implementations always operate on the memory
	 * contained in the message queue message implementation.
	 * This pointer can be used to set the internal message of different
	 * command message implementations.
	 * @return
	 */
	virtual MessageQueueMessageIF* getInternalMessage() const = 0;
};

#endif /* FRAMEWORK_IPC_COMMANDMESSAGEIF_H_ */