#include "GUI_ObjectManipulation.hpp"
#include "GUI_ObjectList.hpp"
#include "I18N.hpp"

#include "OptionsGroup.hpp"
#include "wxExtensions.hpp"
#include "PresetBundle.hpp"
#include "libslic3r/Model.hpp"
#include "libslic3r/Geometry.hpp"
#include "Selection.hpp"

#include <boost/algorithm/string.hpp>

namespace Slic3r
{
namespace GUI
{

ObjectManipulation::ObjectManipulation(wxWindow* parent) :
    OG_Settings(parent, true)
#ifndef __APPLE__
    , m_focused_option("")
#endif // __APPLE__
{
    m_og->set_name(_(L("Object Manipulation")));
    m_og->label_width = 12;//125;
    m_og->set_grid_vgap(5);
    
    m_og->m_on_change = std::bind(&ObjectManipulation::on_change, this, std::placeholders::_1, std::placeholders::_2);
    m_og->m_fill_empty_value = std::bind(&ObjectManipulation::on_fill_empty_value, this, std::placeholders::_1);

    m_og->m_set_focus = [this](const std::string& opt_key)
    {
#ifndef __APPLE__
        m_focused_option = opt_key;
#endif // __APPLE__

        // needed to show the visual hints in 3D scene
        wxGetApp().plater()->canvas3D()->handle_sidebar_focus_event(opt_key, true);
    };

    ConfigOptionDef def;

    // Objects(sub-objects) name
    def.label = L("Name");
    def.gui_type = "legend";
    def.tooltip = L("Object name");
    def.width = 21;
    def.default_value = new ConfigOptionString{ " " };
    m_og->append_single_option_line(Option(def, "object_name"));

    const int field_width = 5;

    // Legend for object modification
    auto line = Line{ "", "" };
    def.label = "";
    def.type = coString;
    def.width = field_width/*50*/;

    std::vector<std::string> axes{ "x", "y", "z" };
    for (const auto axis : axes) {
        const auto label = boost::algorithm::to_upper_copy(axis);
        def.default_value = new ConfigOptionString{ "   " + label };
        Option option = Option(def, axis + "_axis_legend");
        line.append_option(option);
    }
    m_og->append_line(line);


    auto add_og_to_object_settings = [this, field_width](const std::string& option_name, const std::string& sidetext)
    {
        Line line = { _(option_name), "" };
        ConfigOptionDef def;
        def.type = coFloat;
        def.default_value = new ConfigOptionFloat(0.0);
        def.width = field_width/*50*/;

        // Add "uniform scaling" button in front of "Scale" option 
        if (option_name == "Scale") {
            line.near_label_widget = [this](wxWindow* parent) {
                auto btn = new PrusaLockButton(parent, wxID_ANY);
                btn->Bind(wxEVT_BUTTON, [btn, this](wxCommandEvent &event){
                    event.Skip();
                    wxTheApp->CallAfter([btn, this]() { set_uniform_scaling(btn->IsLocked()); });
                });
                m_lock_bnt = btn;
                return btn;
            };
        }

        // Add empty bmp (Its size have to be equal to PrusaLockButton) in front of "Size" option to label alignment
        else if (option_name == "Size") {
            line.near_label_widget = [this](wxWindow* parent) {
                return new wxStaticBitmap(parent, wxID_ANY, wxNullBitmap, wxDefaultPosition,
                                          create_scaled_bitmap(m_parent, "one_layer_lock_on.png").GetSize());
            };
        }

        const std::string lower_name = boost::algorithm::to_lower_copy(option_name);

        std::vector<std::string> axes{ "x", "y", "z" };
        for (auto axis : axes) {
            if (axis == "z")
                def.sidetext = sidetext;
            Option option = Option(def, lower_name + "_" + axis);
            option.opt.full_width = true;
            line.append_option(option);
        }

        return line;
    };


    // Settings table
    m_og->append_line(add_og_to_object_settings(L("Position"), L("mm")), &m_move_Label);
    m_og->append_line(add_og_to_object_settings(L("Rotation"), "°"), &m_rotate_Label);
    m_og->append_line(add_og_to_object_settings(L("Scale"), "%"), &m_scale_Label);
    m_og->append_line(add_og_to_object_settings(L("Size"), "mm"));

    // call back for a rescale of button "Set uniform scale"
    m_og->rescale_near_label_widget = [this](wxWindow* win) {
        auto *ctrl = dynamic_cast<PrusaLockButton*>(win);
        if (ctrl == nullptr)
            return;
        ctrl->rescale();
    };
}

void ObjectManipulation::Show(const bool show)
{
    if (show == IsShown())
        return;

    m_og->Show(show);

    if (show && wxGetApp().get_mode() != comSimple) {
        m_og->get_grid_sizer()->Show(size_t(0), false);
        m_og->get_grid_sizer()->Show(size_t(1), false);
    }
}

bool ObjectManipulation::IsShown()
{
    return m_og->get_grid_sizer()->IsShown(2);
}

void ObjectManipulation::UpdateAndShow(const bool show)
{
    if (show) {
        update_settings_value(wxGetApp().plater()->canvas3D()->get_selection());
    }

    OG_Settings::UpdateAndShow(show);
}

void ObjectManipulation::update_settings_value(const Selection& selection)
{
	m_new_move_label_string   = L("Position");
    m_new_rotate_label_string = L("Rotation");
    m_new_scale_label_string  = L("Scale factors");

    ObjectList* obj_list = wxGetApp().obj_list();
    if (selection.is_single_full_instance())
    {
        // all volumes in the selection belongs to the same instance, any of them contains the needed instance data, so we take the first one
        const GLVolume* volume = selection.get_volume(*selection.get_volume_idxs().begin());
        m_new_position = volume->get_instance_offset();
        m_new_rotation = volume->get_instance_rotation();
        m_new_scale    = volume->get_instance_scaling_factor();
        int obj_idx = volume->object_idx();
        int instance_idx = volume->instance_idx();
        if ((0 <= obj_idx) && (obj_idx < (int)wxGetApp().model_objects()->size()))
        {
            bool changed_box = false;
            if (!m_cache.instance.matches_object(obj_idx))
            {
                m_cache.instance.set(obj_idx, instance_idx, (*wxGetApp().model_objects())[obj_idx]->raw_mesh_bounding_box().size());
                changed_box = true;
            }
            if (changed_box || !m_cache.instance.matches_instance(instance_idx) || !m_cache.scale.isApprox(100.0 * m_new_scale))
                m_new_size = (volume->get_instance_transformation().get_matrix(true, true) * m_cache.instance.box_size).cwiseAbs();
        }
        else
            // this should never happen
            m_new_size = Vec3d::Zero();

        m_new_enabled  = true;
    }
    else if (selection.is_single_full_object() && obj_list->is_selected(itObject))
    {
        m_cache.instance.reset();

        const BoundingBoxf3& box = selection.get_bounding_box();
        m_new_position = box.center();
        m_new_rotation = Vec3d::Zero();
        m_new_scale    = Vec3d(1.0, 1.0, 1.0);
        m_new_size     = box.size();
        m_new_rotate_label_string = L("Rotate");
		m_new_scale_label_string  = L("Scale");
        m_new_enabled  = true;
    }
    else if (selection.is_single_modifier() || selection.is_single_volume())
    {
        m_cache.instance.reset();

        // the selection contains a single volume
        const GLVolume* volume = selection.get_volume(*selection.get_volume_idxs().begin());
        m_new_position = volume->get_volume_offset();
        m_new_rotation = volume->get_volume_rotation();
        m_new_scale    = volume->get_volume_scaling_factor();
        m_new_size = (volume->get_volume_transformation().get_matrix(true, true) * volume->bounding_box.size()).cwiseAbs();
        m_new_enabled = true;
    }
    else if (obj_list->multiple_selection() || obj_list->is_selected(itInstanceRoot))
    {
        reset_settings_value();
		m_new_move_label_string   = L("Translate");
		m_new_rotate_label_string = L("Rotate");
		m_new_scale_label_string  = L("Scale");
        m_new_size = selection.get_bounding_box().size();
        m_new_enabled  = true;
    }
    else
        reset_settings_value();

    m_dirty = true;
}

void ObjectManipulation::update_if_dirty()
{
    if (!m_dirty)
        return;

    if (m_cache.move_label_string != _(m_new_move_label_string)+ ":")
    {
        m_cache.move_label_string = _(m_new_move_label_string)+ ":";
        m_move_Label->SetLabel(m_cache.move_label_string);
    }

    if (m_cache.rotate_label_string != _(m_new_rotate_label_string)+ ":")
    {
        m_cache.rotate_label_string = _(m_new_rotate_label_string)+ ":";
        m_rotate_Label->SetLabel(m_cache.rotate_label_string);
    }

    if (m_cache.scale_label_string != _(m_new_scale_label_string)+ ":")
    {
        m_cache.scale_label_string = _(m_new_scale_label_string)+ ":";
        m_scale_Label->SetLabel(m_cache.scale_label_string);
    }

    if (m_cache.position(0) != m_new_position(0))
        m_og->set_value("position_x", double_to_string(m_new_position(0), 2));

    if (m_cache.position(1) != m_new_position(1))
        m_og->set_value("position_y", double_to_string(m_new_position(1), 2));

    if (m_cache.position(2) != m_new_position(2))
        m_og->set_value("position_z", double_to_string(m_new_position(2), 2));

    m_cache.position = m_new_position;

    auto scale = m_new_scale * 100.0;
    if (m_cache.scale(0) != scale(0))
        m_og->set_value("scale_x", double_to_string(scale(0), 2));

    if (m_cache.scale(1) != scale(1))
        m_og->set_value("scale_y", double_to_string(scale(1), 2));

    if (m_cache.scale(2) != scale(2))
        m_og->set_value("scale_z", double_to_string(scale(2), 2));

    m_cache.scale = scale;

    if (m_cache.size(0) != m_new_size(0))
        m_og->set_value("size_x", double_to_string(m_new_size(0), 2));

    if (m_cache.size(1) != m_new_size(1))
        m_og->set_value("size_y", double_to_string(m_new_size(1), 2));

    if (m_cache.size(2) != m_new_size(2))
        m_og->set_value("size_z", double_to_string(m_new_size(2), 2));

    m_cache.size = m_new_size;

    Vec3d deg_rotation;
    for (size_t i = 0; i < 3; ++i)
    {
        deg_rotation(i) = Geometry::rad2deg(m_new_rotation(i));
    }

    if ((m_cache.rotation(0) != m_new_rotation(0)) || (m_new_rotation(0) == 0.0))
        m_og->set_value("rotation_x", double_to_string(deg_rotation(0), 2));

    if ((m_cache.rotation(1) != m_new_rotation(1)) || (m_new_rotation(1) == 0.0))
        m_og->set_value("rotation_y", double_to_string(deg_rotation(1), 2));

    if ((m_cache.rotation(2) != m_new_rotation(2)) || (m_new_rotation(2) == 0.0))
        m_og->set_value("rotation_z", double_to_string(deg_rotation(2), 2));

    m_cache.rotation = deg_rotation;

    if (wxGetApp().plater()->canvas3D()->get_selection().requires_uniform_scale()) {
        m_lock_bnt->SetLock(true);
        m_lock_bnt->Disable();
    }
    else {
        m_lock_bnt->SetLock(m_uniform_scale);
        m_lock_bnt->Enable();
    }

    if (m_new_enabled)
        m_og->enable();
    else
        m_og->disable();

    m_dirty = false;
}

#ifndef __APPLE__
void ObjectManipulation::emulate_kill_focus()
{
    if (m_focused_option.empty())
        return;

    // we need to use a copy because the value of m_focused_option is modified inside on_change() and on_fill_empty_value()
    std::string option = m_focused_option;

    // see TextCtrl::propagate_value()
    if (static_cast<wxTextCtrl*>(m_og->get_fieldc(option, 0)->getWindow())->GetValue().empty())
        on_fill_empty_value(option);
    else
        on_change(option, 0);
}
#endif // __APPLE__

void ObjectManipulation::reset_settings_value()
{
    m_new_position = Vec3d::Zero();
    m_new_rotation = Vec3d::Zero();
    m_new_scale = Vec3d::Ones();
    m_new_size = Vec3d::Zero();
    m_new_enabled = false;
    m_cache.instance.reset();
    m_dirty = true;
}

void ObjectManipulation::change_position_value(const Vec3d& position)
{
    auto canvas = wxGetApp().plater()->canvas3D();
    Selection& selection = canvas->get_selection();
    selection.start_dragging();
    selection.translate(position - m_cache.position, selection.requires_local_axes());
    canvas->do_move();

    m_cache.position = position;
}

void ObjectManipulation::change_rotation_value(const Vec3d& rotation)
{
    GLCanvas3D* canvas = wxGetApp().plater()->canvas3D();
    const Selection& selection = canvas->get_selection();

    TransformationType transformation_type(TransformationType::World_Relative_Joint);
    if (selection.is_single_full_instance() || selection.requires_local_axes())
		transformation_type.set_independent();
	if (selection.is_single_full_instance()) {
        //FIXME Selection::rotate() does not process absoulte rotations correctly: It does not recognize the axis index, which was changed.
		// transformation_type.set_absolute();
		transformation_type.set_local();
	}

    Vec3d rad_rotation;
    for (size_t i = 0; i < 3; ++i)
		rad_rotation(i) = Geometry::deg2rad((transformation_type.absolute()) ? rotation(i) : rotation(i) - m_cache.rotation(i));

    canvas->get_selection().start_dragging();
	canvas->get_selection().rotate(rad_rotation, transformation_type);
    canvas->do_rotate();

    m_cache.rotation = rotation;
}

void ObjectManipulation::change_scale_value(const Vec3d& scale)
{
    Vec3d scaling_factor = scale;
    const Selection& selection = wxGetApp().plater()->canvas3D()->get_selection();
    if (m_uniform_scale || selection.requires_uniform_scale())
    {
        Vec3d abs_scale_diff = (scale - m_cache.scale).cwiseAbs();
        double max_diff = abs_scale_diff(X);
        Axis max_diff_axis = X;
        if (max_diff < abs_scale_diff(Y))
        {
            max_diff = abs_scale_diff(Y);
            max_diff_axis = Y;
        }
        if (max_diff < abs_scale_diff(Z))
        {
            max_diff = abs_scale_diff(Z);
            max_diff_axis = Z;
        }
        scaling_factor = scale(max_diff_axis) * Vec3d::Ones();
    }

    scaling_factor *= 0.01;

    auto canvas = wxGetApp().plater()->canvas3D();
    canvas->get_selection().start_dragging();
    canvas->get_selection().scale(scaling_factor, false);
    canvas->do_scale();

    if (!m_cache.scale.isApprox(scale))
        m_cache.instance.instance_idx = -1;

    m_cache.scale = scale;
}

void ObjectManipulation::change_size_value(const Vec3d& size)
{
    const Selection& selection = wxGetApp().plater()->canvas3D()->get_selection();

    Vec3d ref_size = m_cache.size;
    if (selection.is_single_volume() || selection.is_single_modifier())
    {
        const GLVolume* volume = selection.get_volume(*selection.get_volume_idxs().begin());
        ref_size = volume->bounding_box.size();
    }
    else if (selection.is_single_full_instance())
        ref_size = m_cache.instance.box_size;

    Vec3d scale = 100.0 * Vec3d(size(0) / ref_size(0), size(1) / ref_size(1), size(2) / ref_size(2));
    Vec3d scaling_factor = scale;

    if (m_uniform_scale || selection.requires_uniform_scale())
    {
        Vec3d abs_scale_diff = (scale - m_cache.scale).cwiseAbs();
        double max_diff = abs_scale_diff(X);
        Axis max_diff_axis = X;
        if (max_diff < abs_scale_diff(Y))
        {
            max_diff = abs_scale_diff(Y);
            max_diff_axis = Y;
        }
        if (max_diff < abs_scale_diff(Z))
        {
            max_diff = abs_scale_diff(Z);
            max_diff_axis = Z;
        }
        scaling_factor = scale(max_diff_axis) * Vec3d::Ones();
    }

    scaling_factor *= 0.01;

    auto canvas = wxGetApp().plater()->canvas3D();
    canvas->get_selection().start_dragging();
    canvas->get_selection().scale(scaling_factor, false);
    canvas->do_scale();

    m_cache.size = size;
}

void ObjectManipulation::on_change(const t_config_option_key& opt_key, const boost::any& value)
{
    // needed to hide the visual hints in 3D scene
    wxGetApp().plater()->canvas3D()->handle_sidebar_focus_event(opt_key, false);
#ifndef __APPLE__
    m_focused_option = "";
#endif // __APPLE__

    if (!m_cache.is_valid())
        return;

    std::vector<std::string> axes{ "_x", "_y", "_z" };

    std::string param;
    std::copy(opt_key.begin(), opt_key.end() - 2, std::back_inserter(param));

    size_t i = 0;
    Vec3d new_value;
    for (auto axis : axes)
        new_value(i++) = boost::any_cast<double>(m_og->get_value(param + axis));

    if (param == "position")
        change_position_value(new_value);
    else if (param == "rotation")
        change_rotation_value(new_value);
    else if (param == "scale")
        change_scale_value(new_value);
    else if (param == "size")
        change_size_value(new_value);
}

void ObjectManipulation::on_fill_empty_value(const std::string& opt_key)
{
    // needed to hide the visual hints in 3D scene
    wxGetApp().plater()->canvas3D()->handle_sidebar_focus_event(opt_key, false);
#ifndef __APPLE__
    m_focused_option = "";
#endif // __APPLE__

    if (!m_cache.is_valid())
        return;

    std::string param;
    std::copy(opt_key.begin(), opt_key.end() - 2, std::back_inserter(param));

    double value = 0.0;
	auto opt_key_to_axis = [&opt_key]() { return opt_key.back() == 'x' ? 0 : opt_key.back() == 'y' ? 1 : 2; };
    if (param == "position")
        value = m_cache.position(opt_key_to_axis());
    else if (param == "rotation")
		value = m_cache.rotation(opt_key_to_axis());
    else if (param == "scale")
		value = m_cache.scale(opt_key_to_axis());
    else if (param == "size")
		value = m_cache.size(opt_key_to_axis());

    m_og->set_value(opt_key, double_to_string(value));
}

} //namespace GUI
} //namespace Slic3r