#ifndef FSFW_DATAPOOLLOCAL_HASLOCALDATAPOOLIF_H_
#define FSFW_DATAPOOLLOCAL_HASLOCALDATAPOOLIF_H_

#include "../datapool/PoolEntryIF.h"
#include "../ipc/MessageQueueSenderIF.h"
#include "../housekeeping/HousekeepingMessage.h"

#include <map>

class LocalDataPoolManager;
class LocalPoolDataSetBase;

/**
 * @brief	Type definition for local pool entries.
 */
using lp_id_t = uint32_t;
using LocalDataPool =  std::map<lp_id_t, PoolEntryIF*>;
using LocalDataPoolMapIter = LocalDataPool::iterator;

/**
 * @brief 		This interface is implemented by classes which posses a local
 * 				data pool (not the managing class). It defines the relationship
 * 				between the local data pool owner and the LocalDataPoolManager.
 * @details
 * Any class implementing this interface shall also have a LocalDataPoolManager
 * member class which contains the actual pool data structure
 * and exposes the public interface for it.
 * This is required because the pool entries are templates, which makes
 * specifying an interface rather difficult. The local data pool can be
 * accessed by using the LocalPoolVariable, LocalPoolVector or LocalDataSet
 * classes.
 *
 * Architectural Note:
 * This could be circumvented by using a wrapper/accessor function or
 * implementing the templated function in this interface..
 * The first solution sounds better than the second but
 * the LocalPoolVariable classes are templates as well, so this just shifts
 * the problem somewhere else. Interfaces are nice, but the most
 * pragmatic solution I found was to offer the client the full interface
 * of the LocalDataPoolManager.
 */
class HasLocalDataPoolIF {
public:
	virtual~ HasLocalDataPoolIF() {};

	static constexpr uint8_t INTERFACE_ID = CLASS_ID::LOCAL_POOL_OWNER_IF;
	static constexpr lp_id_t NO_POOL_ID = 0xffffffff;

	virtual object_id_t getObjectId() const = 0;

	/** Command queue for housekeeping messages. */
	virtual MessageQueueId_t getCommandQueue() const = 0;

	/**
	 * Is used by pool owner to initialize the pool map once
	 * The manager instance shall also be passed to this function.
	 * It can be used to subscribe for periodic packets for for updates.
	 */
	virtual ReturnValue_t initializeLocalDataPool(
	        LocalDataPool& localDataPoolMap,
	        LocalDataPoolManager& poolManager) = 0;

	/** Can be used to get a handle to the local data pool manager. */
	virtual LocalDataPoolManager* getHkManagerHandle() = 0;

	/**
	 * Returns the minimum sampling frequency in milliseconds, which will
	 * usually be the period the pool owner performs its periodic operation.
	 * @return
	 */
	virtual uint32_t getPeriodicOperationFrequency() const = 0;

	/**
	 * This function is used by the pool manager to get a valid dataset
     * from a SID
	 * @param sid Corresponding structure ID
	 * @return
	 */
	virtual LocalPoolDataSetBase* getDataSetHandle(sid_t sid) = 0;

	/* These function can be implemented by pool owner, as they are required
	 * by the housekeeping message interface */
	virtual ReturnValue_t addDataSet(sid_t sid) {
	    return HasReturnvaluesIF::RETURN_FAILED;
	};
	virtual ReturnValue_t removeDataSet(sid_t sid) {
	    return HasReturnvaluesIF::RETURN_FAILED;
	};
	virtual ReturnValue_t changeCollectionInterval(sid_t sid,
	        float newIntervalSeconds) {
	    return HasReturnvaluesIF::RETURN_FAILED;
	};
};

#endif /* FSFW_DATAPOOLLOCAL_HASLOCALDATAPOOLIF_H_ */