#ifndef GAME_MWBASE_JOURNAL_H
#define GAME_MWBASE_JOURNAL_H

#include <deque>
#include <map>
#include <string>
#include <string_view>

#include <cstdint>

#include "../mwdialogue/journalentry.hpp"
#include "../mwdialogue/quest.hpp"
#include "../mwdialogue/topic.hpp"

namespace Loading
{
    class Listener;
}

namespace ESM
{
    class ESMReader;
    class ESMWriter;
}

namespace MWBase
{
    /// \brief Interface for the player's journal (implemented in MWDialogue)
    class Journal
    {
        Journal(const Journal&);
        ///< not implemented

        Journal& operator=(const Journal&);
        ///< not implemented

    public:
        typedef std::deque<MWDialogue::StampedJournalEntry> TEntryContainer;
        typedef TEntryContainer::const_iterator TEntryIter;
        typedef std::map<ESM::RefId, MWDialogue::Quest> TQuestContainer; // topic, quest
        typedef TQuestContainer::const_iterator TQuestIter;
        typedef std::map<ESM::RefId, MWDialogue::Topic> TTopicContainer; // topic-id, topic-content
        typedef TTopicContainer::const_iterator TTopicIter;

    public:
        Journal() {}

        virtual void clear() = 0;

        virtual ~Journal() {}

        virtual void addEntry(const ESM::RefId& id, int index, const MWWorld::Ptr& actor) = 0;
        ///< Add a journal entry.
        /// @param actor Used as context for replacing of escape sequences (%name, etc).

        virtual void setJournalIndex(const ESM::RefId& id, int index) = 0;
        ///< Set the journal index without adding an entry.

        virtual int getJournalIndex(const ESM::RefId& id) const = 0;
        ///< Get the journal index.

        virtual void addTopic(const ESM::RefId& topicId, const ESM::RefId& infoId, const MWWorld::Ptr& actor) = 0;
        /// \note topicId must be lowercase

        virtual void removeLastAddedTopicResponse(const ESM::RefId& topicId, std::string_view actorName) = 0;
        ///< Removes the last topic response added for the given topicId and actor name.
        /// \note topicId must be lowercase

        virtual TEntryIter begin() const = 0;
        ///< Iterator pointing to the begin of the main journal.
        ///
        /// \note Iterators to main journal entries will never become invalid.

        virtual TEntryIter end() const = 0;
        ///< Iterator pointing past the end of the main journal.

        virtual TQuestIter questBegin() const = 0;
        ///< Iterator pointing to the first quest (sorted by topic ID)

        virtual TQuestIter questEnd() const = 0;
        ///< Iterator pointing past the last quest.

        virtual TTopicIter topicBegin() const = 0;
        ///< Iterator pointing to the first topic (sorted by topic ID)
        ///
        /// \note The topic ID is identical with the user-visible topic string.

        virtual TTopicIter topicEnd() const = 0;
        ///< Iterator pointing past the last topic.

        virtual int countSavedGameRecords() const = 0;

        virtual void write(ESM::ESMWriter& writer, Loading::Listener& progress) const = 0;

        virtual void readRecord(ESM::ESMReader& reader, uint32_t type) = 0;
    };
}

#endif