#pragma once

// ------------------------------------------------------------------------------------------------
#include "Core/Common.hpp"

// ------------------------------------------------------------------------------------------------
namespace SqMod {

/* ------------------------------------------------------------------------------------------------
 * Manages a single key-bind entity.
*/
class CKeyBind
{
    // --------------------------------------------------------------------------------------------
    friend class Core;
    friend class KeyBindInst;

private:

    /* --------------------------------------------------------------------------------------------
     * Identifier of the managed entity.
    */
    int32_t       m_ID;

    /* --------------------------------------------------------------------------------------------
     * User tag associated with this instance.
    */
    String      m_Tag;

    /* --------------------------------------------------------------------------------------------
     * User data associated with this instance.
    */
    LightObj    m_Data;

    /* --------------------------------------------------------------------------------------------
     * Base constructor.
    */
    explicit CKeyBind(int32_t id);

public:

    /* --------------------------------------------------------------------------------------------
     * Maximum possible number that could represent an identifier for this entity type.
    */
    static const int32_t Max;

    /* --------------------------------------------------------------------------------------------
     * Copy constructor. (disabled)
    */
    CKeyBind(const CKeyBind &) = delete;

    /* --------------------------------------------------------------------------------------------
     * Move constructor. (disabled)
    */
    CKeyBind(CKeyBind &&) = delete;

    /* --------------------------------------------------------------------------------------------
     * Copy assignment operator. (disabled)
    */
    CKeyBind & operator = (const CKeyBind &) = delete;

    /* --------------------------------------------------------------------------------------------
     * Move assignment operator. (disabled)
    */
    CKeyBind & operator = (CKeyBind &&) = delete;

    /* --------------------------------------------------------------------------------------------
     * See whether this instance manages a valid entity instance otherwise throw an exception.
    */
    void Validate() const
    {
        if (INVALID_ENTITY(m_ID))
        {
            STHROWF("Invalid keybind reference [%s]", m_Tag.c_str());
        }
    }

    /* --------------------------------------------------------------------------------------------
     * Used by the script engine to convert an instance of this type to a string.
    */
    SQMOD_NODISCARD const String & ToString() const;

    /* --------------------------------------------------------------------------------------------
     * Retrieve the associated null entity instance.
    */
    static SQInteger SqGetNull(HSQUIRRELVM vm);

    /* --------------------------------------------------------------------------------------------
     * Retrieve the associated null entity instance.
    */
    SQMOD_NODISCARD static LightObj & GetNull();

    /* --------------------------------------------------------------------------------------------
     * Retrieve the identifier of the entity managed by this instance.
    */
    SQMOD_NODISCARD int32_t GetID() const
    {
        return m_ID;
    }

    /* --------------------------------------------------------------------------------------------
     * Check whether this instance manages a valid entity.
    */
    SQMOD_NODISCARD bool IsActive() const
    {
        return VALID_ENTITY(m_ID);
    }

    /* --------------------------------------------------------------------------------------------
     * Retrieve the associated user tag.
    */
    SQMOD_NODISCARD const String & GetTag() const;

    /* --------------------------------------------------------------------------------------------
     * Modify the associated user tag.
    */
    void SetTag(StackStrF & tag);

    /* --------------------------------------------------------------------------------------------
     * Modify the associated user tag.
    */
    CKeyBind & ApplyTag(StackStrF & tag);

    /* --------------------------------------------------------------------------------------------
     * Retrieve the associated user data.
    */
    SQMOD_NODISCARD LightObj & GetData();

    /* --------------------------------------------------------------------------------------------
     * Modify the associated user data.
    */
    void SetData(LightObj & data);

    /* --------------------------------------------------------------------------------------------
     * Destroy the managed destroy entity.
    */
    bool Destroy0() const // NOLINT(modernize-use-nodiscard)
    {
        return Destroy(0, NullLightObj());
    }

    /* --------------------------------------------------------------------------------------------
     * Destroy the managed destroy entity.
    */
    bool Destroy1(int32_t header) const // NOLINT(modernize-use-nodiscard)
    {
        return Destroy(header, NullLightObj());
    }

    /* --------------------------------------------------------------------------------------------
     * Destroy the managed destroy entity.
    */
    bool Destroy(int32_t header, LightObj & payload) const; // NOLINT(modernize-use-nodiscard)

    /* --------------------------------------------------------------------------------------------
     * Retrieve the events table of this entity.
    */
    SQMOD_NODISCARD LightObj & GetEvents() const;

    /* --------------------------------------------------------------------------------------------
     * Emit a custom event for the managed entity
    */
    void CustomEvent(int32_t header, LightObj & payload) const;

    /* --------------------------------------------------------------------------------------------
     * Retrieve the first key code of the managed key-bind entity.
    */
    SQMOD_NODISCARD int32_t GetFirst() const;

    /* --------------------------------------------------------------------------------------------
     * Retrieve the second key code of the managed key-bind entity.
    */
    SQMOD_NODISCARD int32_t GetSecond() const;

    /* --------------------------------------------------------------------------------------------
     * Retrieve the third key code of the managed key-bind entity.
    */
    SQMOD_NODISCARD int32_t GetThird() const;

    /* --------------------------------------------------------------------------------------------
     * See whether the managed key-bind entity reacts to key release events.
    */
    SQMOD_NODISCARD bool IsRelease() const;
};

} // Namespace:: SqMod