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#pragma once
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#ifndef PLASTICTOOL_H
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#define PLASTICTOOL_H
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// TnzCore includes
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#include "tproperty.h"
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#include "tmeshimage.h"
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// TnzBase includes
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#include "tparamchange.h"
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#include "tdoubleparamrelayproperty.h"
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// TnzExt includes
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#include "ext/plasticskeleton.h"
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#include "ext/plasticskeletondeformation.h"
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#include "ext/plasticvisualsettings.h"
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// TnzQt includes
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#include "toonzqt/plasticvertexselection.h"
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// TnzTools includes
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#include "tools/tool.h"
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#include "tools/cursors.h"
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#include "tools/tooloptions.h"
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// STD includes
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#include <memory></memory>
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// tcg includes
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#include "tcg/tcg_base.h"
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#include "tcg/tcg_controlled_access.h"
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// Qt includes
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#include <qobject></qobject>
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//****************************************************************************************
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//    Metric defines
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//****************************************************************************************
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// Skeleton primitives
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#define HIGHLIGHT_DISTANCE 8  // Pixels distance to highlight
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#define HANDLE_SIZE 4         // Size of vertex handles
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#define HIGHLIGHTED_HANDLE_SIZE HIGHLIGHT_DISTANCE  // Size of handle highlights
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#define SELECTED_HANDLE_SIZE                                                   \
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  HIGHLIGHTED_HANDLE_SIZE  // Size of handle selections
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// Mesh primitives
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#define MESH_HIGHLIGHT_DISTANCE 8
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#define MESH_HIGHLIGHTED_HANDLE_SIZE 4
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#define MESH_SELECTED_HANDLE_SIZE 2
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//****************************************************************************************
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//    PlasticTool  declaration
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//****************************************************************************************
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class PlasticTool final : public QObject,
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                          public TTool,
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                          public TParamObserver,
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                          public TSelection::View {
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  Q_OBJECT
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  friend class PlasticToolOptionsBox;
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public:
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  class TemporaryActivation {
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    bool m_activate;
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  public:
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    TemporaryActivation(int row, int col);
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    ~TemporaryActivation();
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  };
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  struct MeshIndex final : public tcg::safe_bool<meshindex> {</meshindex>
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    int m_meshIdx,  //!< Mesh index in a TMeshImage
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        m_idx;      //!< Index in the referenced mesh
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    explicit MeshIndex(int meshIdx = -1, int idx = -1)
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        : m_meshIdx(meshIdx), m_idx(idx) {}
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    bool operator_bool() const { return (m_meshIdx >= 0) && (m_idx >= 0); }
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    bool operator<(const MeshIndex &other) const {
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      return (m_meshIdx == other.m_meshIdx) ? (m_idx < other.m_idx)
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                                            : (m_meshIdx < other.m_meshIdx);
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    }
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  };
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  typedef MultipleSelection<meshindex> MeshSelection;</meshindex>
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private:
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  PlasticSkeletonDeformationP m_sd;  //!< Current column's skeleton deformation
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  int m_skelId;                      //!< Current m_sd's skeleton id
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  tcg::invalidable<plasticskeleton></plasticskeleton>
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      m_deformedSkeleton;  //!< The interactively-deformed \a animation-mode
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                           //! skeleton
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  TMeshImageP m_mi;  //!< Current mesh image
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  // Property-related vars  (ie, tool options)
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  TPropertyGroup
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      *m_propGroup;  //!< Tool properties groups (needed for toolbar-building)
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  TEnumProperty m_mode;          //!< Editing mode (BUILD, ANIMATE, etc..)
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  TStringProperty m_vertexName;  //!< Vertex name property
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  TBoolProperty m_interpolate;  //!< Strict vertex interpolation property
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  TBoolProperty m_snapToMesh;   //!< Snap to Mesh vertexes during skeleton build
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  TDoubleProperty m_thickness;  //!< Brush radius, from 1 to 100
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  TEnumProperty
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      m_rigidValue;  //!< Rigidity drawing value (ie draw rigidity/flexibility)
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                     //!< put a keyframe at current frame
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  TBoolProperty
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      m_globalKey;  //!< Whether animating a vertex will cause EVERY vertex to
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  TBoolProperty
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      m_keepDistance;  //!< Whether animation editing can alter vertex distances
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  TStringProperty m_minAngle,
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      m_maxAngle;  //!< Minimum and maximum angle values allowed
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  TPropertyGroup m_relayGroup;  //!< Group for each vertex parameter relay
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  TDoubleParamRelayProperty
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      m_distanceRelay;  //!< Relay property for vertex distance
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  TDoubleParamRelayProperty m_angleRelay;  //!< Relay property for vertex angle
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  TDoubleParamRelayProperty m_soRelay;     //!< Relay property for vertex so
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  TDoubleParamRelayProperty
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      m_skelIdRelay;  //!< Relay property for m_sd's skeleton id
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  // Mouse-related vars
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  TPointD m_pos;         //!< Last known mouse position
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  TPointD m_pressedPos;  //!< Last mouse press position
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  bool m_dragged;        //!< Whether dragging occurred between a press/release
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  std::vector<tpointd></tpointd>
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      m_pressedVxsPos;   //!< Position of selected vertices at mouse press
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  SkDKey m_pressedSkDF;  //!< Skeleton deformation keyframes at mouse press
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  // Selection/Highlighting-related vars
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  int m_svHigh,                    //!< Highlighted skeleton vertexes
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      m_seHigh;                    //!< Highlighted skeleton edges
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  PlasticVertexSelection m_svSel;  //!< Selected skeleton vertexes
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  MeshIndex m_mvHigh,     //!< Highlighted mesh vertexes
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      m_meHigh;           //!< Highlighted mesh edges
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  MeshSelection m_mvSel,  //!< Selected mesh vertexes
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      m_meSel;            //!< Selected mesh edges
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  // Drawing-related vars
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  PlasticVisualSettings m_pvs;  //!< Visual options for plastic painting
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  // Editing-related vars
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  std::unique_ptr<tcg::polymorphic> m_rigidityPainter;  //!< Delegate class to</tcg::polymorphic>
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                                                        //! deal with (undoable)
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  //! rigidity painting
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  bool m_showSkeletonOS;  //!< Whether onion-skinned skeletons must be shown
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  // Deformation-related vars
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  bool m_recompileOnMouseRelease;  //!< Whether skeleton recompilation should
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                                   //! happen on mouse release
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public:
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  enum Modes {
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    MESH_IDX = 0,
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    RIGIDITY_IDX,
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    BUILD_IDX,
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    ANIMATE_IDX,
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    MODES_COUNT
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  };
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public:
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  PlasticTool();
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  ~PlasticTool();
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  ToolType getToolType() const override;
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  int getCursorId() const override { return ToolCursor::SplineEditorCursor; }
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  ToolOptionsBox *createOptionsBox() override;
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  TPropertyGroup *getProperties(int idx) override { return &m_propGroup[idx]; }
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  void updateTranslation() override;
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  void onSetViewer() override;
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  void onActivate() override;
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  void onDeactivate() override;
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  void onEnter() override;
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  void onLeave() override;
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  void addContextMenuItems(QMenu *menu) override;
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  void reset() override;
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  bool onPropertyChanged(std::string propertyName) override;
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public:
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  // Methods reimplemented in each interaction mode
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  void mouseMove(const TPointD &pos, const TMouseEvent &me) override;
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  void leftButtonDown(const TPointD &pos, const TMouseEvent &me) override;
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  void leftButtonDrag(const TPointD &pos, const TMouseEvent &me) override;
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  void leftButtonUp(const TPointD &pos, const TMouseEvent &me) override;
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  void draw() override;
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public:
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  // Skeleton methods
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  void setSkeletonSelection(const PlasticVertexSelection &vSel);
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  void toggleSkeletonSelection(const PlasticVertexSelection &vSel);
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  void clearSkeletonSelections();
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  const PlasticVertexSelection &skeletonVertexSelection() const {
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    return m_svSel;
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  }
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  PlasticVertexSelection branchSelection(int vIdx) const;
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  void moveVertex_build(const std::vector<tpointd> &originalVxsPos,</tpointd>
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                        const TPointD &posShift);
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  void addVertex(const PlasticSkeletonVertex &vx);
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  void insertVertex(const PlasticSkeletonVertex &vx, int e);
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  void insertVertex(const PlasticSkeletonVertex &vx, int parent,
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                    const std::vector<int> &children);</int>
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  void removeVertex();
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  void setVertexName(QString &name);
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  int addSkeleton(const PlasticSkeletonP &skeleton);
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  void addSkeleton(int skelId, const PlasticSkeletonP &skeleton);
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  void removeSkeleton(int skelId);
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  PlasticSkeletonP skeleton() const;
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  void touchSkeleton();
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  PlasticSkeletonDeformationP deformation() const { return m_sd; }
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  void touchDeformation();
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  void storeDeformation();  //!< Stores deformation of current column (copying
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                            //! its reference)
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  void storeSkeletonId();  //!< Stores current skeleton id associated to current
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                           //! deformation
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  void onChange();  //!< Updates the tool after a deformation parameter change.
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                    //!< It can be used to refresh the tool in ANIMATION mode.
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public:
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  // Mesh methods
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  const MeshSelection &meshVertexesSelection() const { return m_mvSel; }
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  const MeshSelection &meshEdgesSelection() const { return m_meSel; }
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  void setMeshVertexesSelection(const MeshSelection &vSel);
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  void toggleMeshVertexesSelection(const MeshSelection &vSel);
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  void setMeshEdgesSelection(const MeshSelection &eSel);
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  void toggleMeshEdgesSelection(const MeshSelection &eSel);
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  void clearMeshSelections();
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  void storeMeshImage();
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  void moveVertex_mesh(const std::vector<tpointd> &originalVxsPos,</tpointd>
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                       const TPointD &posShift);
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public:
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  // Actions with associated undo
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  int addSkeleton_undo(const PlasticSkeletonP &skeleton);
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  void addSkeleton_undo(int skelId, const PlasticSkeletonP &skeleton);
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  void removeSkeleton_undo(int skelId);
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  void removeSkeleton_withKeyframes_undo(int skelId);
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  void editSkelId_undo(int skelId);
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public slots:
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  void swapEdge_mesh_undo();
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  void collapseEdge_mesh_undo();
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  void splitEdge_mesh_undo();
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  void cutEdges_mesh_undo();
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  void deleteSelectedVertex_undo();
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  void setKey_undo();
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  void setGlobalKey_undo();
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  void setRestKey_undo();
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  void setGlobalRestKey_undo();
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  void copySkeleton();
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  void pasteSkeleton_undo();
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  void copyDeformation();
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  void pasteDeformation_undo();
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signals:  // privates
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  void skelIdsListChanged();
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  void skelIdChanged();
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protected:
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  void mouseMove_mesh(const TPointD &pos, const TMouseEvent &me);
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  void leftButtonDown_mesh(const TPointD &pos, const TMouseEvent &me);
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  void leftButtonDrag_mesh(const TPointD &pos, const TMouseEvent &me);
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  void leftButtonUp_mesh(const TPointD &pos, const TMouseEvent &me);
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  void addContextMenuActions_mesh(QMenu *menu);
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  void mouseMove_build(const TPointD &pos, const TMouseEvent &me);
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  void leftButtonDown_build(const TPointD &pos, const TMouseEvent &me);
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  void leftButtonDrag_build(const TPointD &pos, const TMouseEvent &me);
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  void leftButtonUp_build(const TPointD &pos, const TMouseEvent &me);
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  void addContextMenuActions_build(QMenu *menu);
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  void mouseMove_rigidity(const TPointD &pos, const TMouseEvent &me);
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  void leftButtonDown_rigidity(const TPointD &pos, const TMouseEvent &me);
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  void leftButtonDrag_rigidity(const TPointD &pos, const TMouseEvent &me);
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  void leftButtonUp_rigidity(const TPointD &pos, const TMouseEvent &me);
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  void addContextMenuActions_rigidity(QMenu *menu);
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  void mouseMove_animate(const TPointD &pos, const TMouseEvent &me);
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  void leftButtonDown_animate(const TPointD &pos, const TMouseEvent &me);
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  void leftButtonDrag_animate(const TPointD &pos, const TMouseEvent &me);
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  void leftButtonUp_animate(const TPointD &pos, const TMouseEvent &me);
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  void addContextMenuActions_animate(QMenu *menu);
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  void draw_mesh();
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  void draw_build();
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  void draw_rigidity();
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  void draw_animate();
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private:
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  // Skeleton methods
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  PlasticSkeleton &deformedSkeleton();
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  void updateDeformedSkeleton(PlasticSkeleton &deformedSkeleton);
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  // Keyframe methods
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  void keyFunc_undo(void (PlasticTool::*keyFunc)());
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  void setKey();
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  void setGlobalKey();
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  void setRestKey();
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  void setGlobalRestKey();
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  // Rigidity methods
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  static std::unique_ptr<tcg::polymorphic> createRigidityPainter();</tcg::polymorphic>
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  // Drawing methods
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  void drawSkeleton(const PlasticSkeleton &skel, double pixelSize,
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                    UCHAR alpha = 255);
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  void drawOnionSkinSkeletons_build(double pixelSize);
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  void drawOnionSkinSkeletons_animate(double pixelSize);
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  void drawHighlights(const SkDP &sd, const PlasticSkeleton *skel,
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                      double pixelSize);
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  void drawSelections(const SkDP &sd, const PlasticSkeleton &skel,
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                      double pixelSize);
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  void drawAngleLimits(const SkDP &sd, int skeId, int v, double pixelSize);
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  // Selection methods
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  void setMeshSelection(MeshSelection &target, const MeshSelection &newSel);
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  void toggleMeshSelection(MeshSelection &target,
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                           const MeshSelection &addedSel);
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  void onSelectionChanged() override;
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  void enableCommands() override;
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  // Parameter Observation methods
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  void onChange(const TParamChange &) override;
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private slots:
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  void onFrameSwitched() override;
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  void onColumnSwitched();
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  void onXsheetChanged();
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  void onShowMeshToggled(bool on);
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  void onShowSOToggled(bool on);
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  void onShowRigidityToggled(bool on);
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  void onShowSkelOSToggled(bool on);
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};
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//****************************************************************************************
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//    PlasticToolOptionsBox  declaration
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//****************************************************************************************
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class PlasticToolOptionsBox final : public GenericToolOptionsBox,
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                                    public TProperty::Listener {
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  Q_OBJECT
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public:
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  PlasticToolOptionsBox(QWidget *parent, TTool *tool,
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                        TPaletteHandle *pltHandle);
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private:
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  class SkelIdsComboBox;
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private:
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  TTool *m_tool;
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  GenericToolOptionsBox **m_subToolbars;
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  SkelIdsComboBox *m_skelIdComboBox;
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  QPushButton *m_addSkelButton, *m_removeSkelButton;
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private:
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  void showEvent(QShowEvent *se) override;
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  void hideEvent(QHideEvent *he) override;
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  void onPropertyChanged() override;
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private slots:
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  void onSkelIdsListChanged();
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  void onSkelIdChanged();
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  void onSkelIdEdited();
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  void onAddSkeleton();
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  void onRemoveSkeleton();
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};
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//****************************************************************************************
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//    PlasticTool  local functions
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//****************************************************************************************
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namespace PlasticToolLocals {
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extern PlasticTool l_plasticTool;        //!< Tool instance.
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extern bool l_suspendParamsObservation;  //!< Used to join multiple param change
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                                         //! notifications.
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//------------------------------------------------------------------------------
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// Generic functions
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TPointD projection(
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    const PlasticSkeleton &skeleton, int e,
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    const TPointD &pos);  //!< Projects specified position an a skeleton edge.
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// Global getters
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double frame();  //!< Returns current global xsheet frame.
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int row();       //!< Returns current global xsheet row.
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int column();                 //!< Returns current global xsheet column index.
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TXshColumn *xshColumn();      //!< Returns current xsheet column object.
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TStageObject *stageObject();  //!< Returns current stage object.
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const TXshCell &xshCell();  //!< Returns current xsheet cell.
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void setCell(
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    int row,
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    int col);  //!< Moves current xsheet cell to the specified position.
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int skeletonId();  //!< Returns current skeleton id.
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double sdFrame();  //!< Returns current stage object's parameters time
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//!  (ie the frame value to be used with function editor curves,
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//!  which takes cyclicity into consideration).
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// Keyframe functions
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void setKeyframe(
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    TDoubleParamP ¶m,
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    double frame);  //!< Sets a keyframe to the specified parameter curve.
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void setKeyframe(
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    SkVD *vd,
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    double frame);  //!< Sets a keyframe to the specified vertex deformation.
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void setKeyframe(
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    const PlasticSkeletonDeformationP &sd,
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    double frame);  //!< Sets a keyframe to an entire skeleton deformation.
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void invalidateXsheet();  //!< Refreshes xsheet content.
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// Draw functions
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void drawSquare(const TPointD &pos,
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                double radius);  //!< Draws the outline of a square
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void drawFullSquare(const TPointD &pos,
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                    double radius);  //!< Draws a filled square
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// Mesh functions
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std::pair<double, plastictool::meshindex=""> closestVertex(const TMeshImage &mi,</double,>
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                                                        const TPointD &pos);
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std::pair<double, plastictool::meshindex=""> closestEdge(const TMeshImage &mi,</double,>
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                                                      const TPointD &pos);
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}  // namespace PlasticToolLocals
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#endif  // PLASTICTOOL_H