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#pragma once

#include "../defines.hpp"
#include <list>
#include "../helpers/Monitor.hpp"
#include "OpenGL.hpp"
#include "Renderbuffer.hpp"
#include "../helpers/Timer.hpp"
#include "../helpers/math/Math.hpp"

struct SMonitorRule;
class CWorkspace;
class CWindow;
class CInputPopup;
class IHLBuffer;

// TODO: add fuller damage tracking for updating only parts of a window
enum DAMAGETRACKINGMODES {
    DAMAGE_TRACKING_INVALID = -1,
    DAMAGE_TRACKING_NONE    = 0,
    DAMAGE_TRACKING_MONITOR,
    DAMAGE_TRACKING_FULL
};

enum eRenderPassMode {
    RENDER_PASS_ALL = 0,
    RENDER_PASS_MAIN,
    RENDER_PASS_POPUP
};

enum eRenderMode {
    RENDER_MODE_NORMAL              = 0,
    RENDER_MODE_FULL_FAKE           = 1,
    RENDER_MODE_TO_BUFFER           = 2,
    RENDER_MODE_TO_BUFFER_READ_ONLY = 3,
};

class CToplevelExportProtocolManager;
class CInputManager;
struct SSessionLockSurface;

struct SExplicitSyncSettings {
    bool explicitEnabled = false, explicitKMSEnabled = false;
};

class CHyprRenderer {
  public:
    CHyprRenderer();
    ~CHyprRenderer();

    void                            renderMonitor(CMonitor* pMonitor);
    void                            arrangeLayersForMonitor(const MONITORID&);
    void                            damageSurface(SP<CWLSurfaceResource>, double, double, double scale = 1.0);
    void                            damageWindow(PHLWINDOW, bool forceFull = false);
    void                            damageBox(CBox*, bool skipFrameSchedule = false);
    void                            damageBox(const int& x, const int& y, const int& w, const int& h);
    void                            damageRegion(const CRegion&);
    void                            damageMonitor(CMonitor*);
    void                            damageMirrorsWith(CMonitor*, const CRegion&);
    bool                            applyMonitorRule(CMonitor*, SMonitorRule*, bool force = false);
    bool                            shouldRenderWindow(PHLWINDOW, CMonitor*);
    bool                            shouldRenderWindow(PHLWINDOW);
    void                            ensureCursorRenderingMode();
    bool                            shouldRenderCursor();
    void                            setCursorHidden(bool hide);
    void                            calculateUVForSurface(PHLWINDOW, SP<CWLSurfaceResource>, bool main = false, const Vector2D& projSize = {}, bool fixMisalignedFSV1 = false);
    std::tuple<float, float, float> getRenderTimes(CMonitor* pMonitor); // avg max min
    void                            renderLockscreen(CMonitor* pMonitor, timespec* now, const CBox& geometry);
    void                            setOccludedForBackLayers(CRegion& region, PHLWORKSPACE pWorkspace);
    void                            setOccludedForMainWorkspace(CRegion& region, PHLWORKSPACE pWorkspace); // TODO: merge occlusion methods
    bool                            canSkipBackBufferClear(CMonitor* pMonitor);
    void                            recheckSolitaryForMonitor(CMonitor* pMonitor);
    void                            setCursorSurface(SP<CWLSurface> surf, int hotspotX, int hotspotY, bool force = false);
    void                            setCursorFromName(const std::string& name, bool force = false);
    void                            onRenderbufferDestroy(CRenderbuffer* rb);
    SP<CRenderbuffer>               getCurrentRBO();
    bool                            isNvidia();
    void                            makeEGLCurrent();
    void                            unsetEGL();
    SExplicitSyncSettings           getExplicitSyncSettings();

    // if RENDER_MODE_NORMAL, provided damage will be written to.
    // otherwise, it will be the one used.
    bool      beginRender(CMonitor* pMonitor, CRegion& damage, eRenderMode mode = RENDER_MODE_NORMAL, SP<IHLBuffer> buffer = {}, CFramebuffer* fb = nullptr, bool simple = false);
    void      endRender();

    bool      m_bBlockSurfaceFeedback = false;
    bool      m_bRenderingSnapshot    = false;
    CMonitor* m_pMostHzMonitor        = nullptr;
    bool      m_bDirectScanoutBlocked = false;

    DAMAGETRACKINGMODES
    damageTrackingModeFromStr(const std::string&);

    void                                setSurfaceScanoutMode(SP<CWLSurfaceResource> surface, SP<CMonitor> monitor); // nullptr monitor resets
    void                                initiateManualCrash();

    bool                                m_bCrashingInProgress = false;
    float                               m_fCrashingDistort    = 0.5f;
    wl_event_source*                    m_pCrashingLoop       = nullptr;
    wl_event_source*                    m_pCursorTicker       = nullptr;

    CTimer                              m_tRenderTimer;

    std::vector<SP<CWLSurfaceResource>> explicitPresented;

    struct {
        int                           hotspotX;
        int                           hotspotY;
        std::optional<SP<CWLSurface>> surf;
        std::string                   name;
    } m_sLastCursorData;

  private:
    void              arrangeLayerArray(CMonitor*, const std::vector<PHLLSREF>&, bool, CBox*);
    void              renderWorkspaceWindowsFullscreen(CMonitor*, PHLWORKSPACE, timespec*); // renders workspace windows (fullscreen) (tiled, floating, pinned, but no special)
    void              renderWorkspaceWindows(CMonitor*, PHLWORKSPACE, timespec*);           // renders workspace windows (no fullscreen) (tiled, floating, pinned, but no special)
    void              renderWindow(PHLWINDOW, CMonitor*, timespec*, bool, eRenderPassMode, bool ignorePosition = false, bool ignoreAllGeometry = false);
    void              renderLayer(PHLLS, CMonitor*, timespec*, bool popups = false);
    void              renderSessionLockSurface(SSessionLockSurface*, CMonitor*, timespec*);
    void              renderDragIcon(CMonitor*, timespec*);
    void              renderIMEPopup(CInputPopup*, CMonitor*, timespec*);
    void              renderWorkspace(CMonitor* pMonitor, PHLWORKSPACE pWorkspace, timespec* now, const CBox& geometry);
    void              sendFrameEventsToWorkspace(CMonitor* pMonitor, PHLWORKSPACE pWorkspace, timespec* now); // sends frame displayed events but doesn't actually render anything
    void              renderAllClientsForWorkspace(CMonitor* pMonitor, PHLWORKSPACE pWorkspace, timespec* now, const Vector2D& translate = {0, 0}, const float& scale = 1.f);
    void              renderSessionLockMissing(CMonitor* pMonitor);

    bool              commitPendingAndDoExplicitSync(CMonitor* pMonitor);

    bool              m_bCursorHidden        = false;
    bool              m_bCursorHasSurface    = false;
    SP<CRenderbuffer> m_pCurrentRenderbuffer = nullptr;
    SP<Aquamarine::IBuffer> m_pCurrentBuffer;
    eRenderMode             m_eRenderMode = RENDER_MODE_NORMAL;

    bool                    m_bNvidia = false;

    struct {
        bool hiddenOnTouch    = false;
        bool hiddenOnTimeout  = false;
        bool hiddenOnKeyboard = false;
    } m_sCursorHiddenConditions;

    SP<CRenderbuffer>              getOrCreateRenderbuffer(SP<Aquamarine::IBuffer> buffer, uint32_t fmt);
    std::vector<SP<CRenderbuffer>> m_vRenderbuffers;

    friend class CHyprOpenGLImpl;
    friend class CToplevelExportFrame;
    friend class CInputManager;
    friend class CPointerManager;
    friend class CMonitor;
};

inline std::unique_ptr<CHyprRenderer> g_pHyprRenderer;