#include "GLGizmoFuzzySkin.hpp"

#include "libslic3r/Model.hpp"
#include "libslic3r/Print.hpp"

#include "slic3r/GUI/GLCanvas3D.hpp"
#include "slic3r/GUI/GUI_App.hpp"
#include "slic3r/GUI/GUI_ObjectList.hpp"
#include "slic3r/GUI/ImGuiWrapper.hpp"
#include "slic3r/GUI/MsgDialog.hpp"
#include "slic3r/GUI/Plater.hpp"
#include "slic3r/Utils/UndoRedo.hpp"

#include <GL/glew.h>
#include <algorithm>

namespace Slic3r::GUI {

void GLGizmoFuzzySkin::on_shutdown()
{
    m_parent.use_slope(false);
    m_parent.toggle_model_objects_visibility(true);
}

std::string GLGizmoFuzzySkin::on_get_name() const
{
    return _u8L("Paint-on fuzzy skin");
}

bool GLGizmoFuzzySkin::on_init()
{
    m_shortcut_key = WXK_CONTROL_H;

    m_desc["clipping_of_view_caption"]  = _L("Alt + Mouse wheel");
    m_desc["clipping_of_view"]          = _L("Section view");
    m_desc["reset_direction"]           = _L("Reset direction");
    m_desc["cursor_size_caption"]       = _L("Ctrl + Mouse wheel");
    m_desc["cursor_size"]               = _L("Brush size");
    m_desc["cursor_type"]               = _L("Brush shape") ;
    m_desc["add_fuzzy_skin_caption"]    = _L("Left mouse button");
    m_desc["add_fuzzy_skin"]            = _L("Add fuzzy skin");
    m_desc["remove_fuzzy_skin_caption"] = _L("Shift + Left mouse button");
    m_desc["remove_fuzzy_skin"]         = _L("Remove fuzzy skin");
    m_desc["remove_all"]                = _L("Erase all painting");
    m_desc["circle"]                    = _L("Circle");
    m_desc["sphere"]                    = _L("Sphere");
    m_desc["pointer"]                   = _L("Triangles");
    m_desc["tool_type"]                 = _L("Tool type");
    m_desc["tool_brush"]                = _L("Brush");
    m_desc["tool_smart_fill"]           = _L("Smart fill");
    m_desc["smart_fill_angle_caption"]  = _L("Ctrl + Mouse wheel");
    m_desc["smart_fill_angle"]          = _L("Smart fill angle");

    return true;
}

GLGizmoFuzzySkin::GLGizmoFuzzySkin(GLCanvas3D& parent, const std::string& icon_filename, unsigned int sprite_id)
    : GLGizmoPainterBase(parent, icon_filename, sprite_id), m_current_tool(ImGui::CircleButtonIcon)
{
}

void GLGizmoFuzzySkin::render_painter_gizmo()
{
    const Selection &selection = m_parent.get_selection();

    glsafe(::glEnable(GL_BLEND));
    glsafe(::glEnable(GL_DEPTH_TEST));

    render_triangles(selection);
    m_c->object_clipper()->render_cut();
    m_c->instances_hider()->render_cut();
    render_cursor();

    glsafe(::glDisable(GL_BLEND));
}

void GLGizmoFuzzySkin::show_tooltip_information(float caption_max, float x, float y)
{
    ImTextureID normal_id = m_parent.get_gizmos_manager().get_icon_texture_id(GLGizmosManager::MENU_ICON_NAME::IC_TOOLBAR_TOOLTIP);
    ImTextureID hover_id  = m_parent.get_gizmos_manager().get_icon_texture_id(GLGizmosManager::MENU_ICON_NAME::IC_TOOLBAR_TOOLTIP_HOVER);

    caption_max += m_imgui->calc_text_size(std::string_view{": "}).x + 15.f;

    float  scale       = m_parent.get_scale();
    ImVec2 button_size = ImVec2(25 * scale, 25 * scale); // ORCA: Use exact resolution will prevent blur on icon
    ImGui::PushStyleVar(ImGuiStyleVar_FrameBorderSize, 0.0f);
    ImGui::PushStyleVar(ImGuiStyleVar_FramePadding, {0, 0}); // ORCA: Dont add padding
    ImGui::ImageButton3(normal_id, hover_id, button_size);

    if (ImGui::IsItemHovered()) {
        ImGui::BeginTooltip2(ImVec2(x, y));
        auto draw_text_with_caption = [this, &caption_max](const wxString& caption, const wxString& text) {
            m_imgui->text_colored(ImGuiWrapper::COL_ACTIVE, caption);
            ImGui::SameLine(caption_max);
            m_imgui->text_colored(ImGuiWrapper::COL_WINDOW_BG, text);
        };

        std::vector<std::string> tip_items;
        switch (m_tool_type) {
            case ToolType::BRUSH:
                if (m_cursor_type == TriangleSelector::POINTER) {
                    tip_items = {"add_fuzzy_skin", "remove_fuzzy_skin", "clipping_of_view"};
                } else {
                    tip_items = {"add_fuzzy_skin", "remove_fuzzy_skin", "cursor_size", "clipping_of_view"};
                }
                break;
            case ToolType::SMART_FILL:
                tip_items = {"add_fuzzy_skin", "remove_fuzzy_skin", "smart_fill_angle", "clipping_of_view"};
                break;
            default:
                break;
        }
        for (const auto &t : tip_items) draw_text_with_caption(m_desc.at(t + "_caption") + ": ", m_desc.at(t));
        ImGui::EndTooltip();
    }
    ImGui::PopStyleVar(2);
}

void GLGizmoFuzzySkin::on_render_input_window(float x, float y, float bottom_limit)
{
    if (!m_c->selection_info()->model_object())
        return;

    const float approx_height = m_imgui->scaled(22.f);
    y = std::min(y, bottom_limit - approx_height);
    //BBS: GUI refactor: move gizmo to the right
#if BBS_TOOLBAR_ON_TOP
    GizmoImguiSetNextWIndowPos(x, y, ImGuiCond_Always, 0.0f, 0.0f);
#else
    GizmoImguiSetNextWIndowPos(x, y, ImGuiCond_Always, 1.0f, 0.0f);
#endif
    //m_imgui->set_next_window_pos(x, y, ImGuiCond_Always);

    // BBS
    ImGuiWrapper::push_toolbar_style(m_parent.get_scale());

    GizmoImguiBegin(get_name(), ImGuiWindowFlags_NoMove | ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoTitleBar);

    // First calculate width of all the texts that are could possibly be shown. We will decide set the dialog width based on that:
    const float space_size = m_imgui->get_style_scaling() * 8;
    const float clipping_slider_left  = std::max(m_imgui->calc_text_size(m_desc.at("clipping_of_view")).x + m_imgui->scaled(1.5f),
        m_imgui->calc_text_size(m_desc.at("reset_direction")).x + m_imgui->scaled(1.5f) + ImGui::GetStyle().FramePadding.x * 2);
    const float cursor_slider_left     = m_imgui->calc_text_size(m_desc.at("cursor_size")).x + m_imgui->scaled(1.5f);
    const float smart_fill_slider_left = m_imgui->calc_text_size(m_desc.at("smart_fill_angle")).x + m_imgui->scaled(1.5f);

    const float cursor_type_radio_circle  = m_imgui->calc_text_size(m_desc["circle"]).x + m_imgui->scaled(2.5f);
    const float cursor_type_radio_sphere  = m_imgui->calc_text_size(m_desc["sphere"]).x + m_imgui->scaled(2.5f);
    const float cursor_type_radio_pointer = m_imgui->calc_text_size(m_desc["pointer"]).x + m_imgui->scaled(2.5f);

    const float button_width         = m_imgui->calc_text_size(m_desc.at("remove_all")).x + m_imgui->scaled(1.f);
    const float buttons_width        = m_imgui->scaled(0.5f);
    const float minimal_slider_width = m_imgui->scaled(4.f);

    const float tool_type_radio_left       = m_imgui->calc_text_size(m_desc["tool_type"]).x + m_imgui->scaled(1.f);
    const float tool_type_radio_brush      = m_imgui->calc_text_size(m_desc["tool_brush"]).x + m_imgui->scaled(2.5f);
    const float tool_type_radio_smart_fill = m_imgui->calc_text_size(m_desc["tool_smart_fill"]).x + m_imgui->scaled(2.5f);

    float caption_max    = 0.f;
    float total_text_max = 0.f;
    for (const std::string t : {"add_fuzzy_skin", "remove_fuzzy_skin"}) {
        caption_max    = std::max(caption_max, m_imgui->calc_text_size(m_desc[t + "_caption"]).x);
        total_text_max = std::max(total_text_max, m_imgui->calc_text_size(m_desc[t]).x);
    }
    total_text_max += caption_max + m_imgui->scaled(1.f);
    caption_max    += m_imgui->scaled(1.f);

    const float circle_max_width = std::max(clipping_slider_left, cursor_slider_left);

    const float sliders_left_width = std::max(smart_fill_slider_left, std::max(cursor_slider_left, clipping_slider_left));
    const float slider_icon_width  = m_imgui->get_slider_icon_size().x;
    float window_width = minimal_slider_width + sliders_left_width + slider_icon_width;
    const float empty_button_width = m_imgui->calc_button_size("").x;

    window_width                   = std::max(window_width, total_text_max);
    window_width                   = std::max(window_width, button_width);
    window_width                   = std::max(window_width, cursor_type_radio_circle + cursor_type_radio_sphere + cursor_type_radio_pointer);
    window_width                   = std::max(window_width, tool_type_radio_left + tool_type_radio_brush + tool_type_radio_smart_fill);
    window_width                   = std::max(window_width, 2.f * buttons_width + m_imgui->scaled(1.f));
    
    const float sliders_width = m_imgui->scaled(7.0f);
    const float drag_left_width = ImGui::GetStyle().WindowPadding.x + sliders_width - space_size;

    const float max_tooltip_width = ImGui::GetFontSize() * 20.0f;

    ImGui::AlignTextToFramePadding();
    m_imgui->text(m_desc["tool_type"]);

    std::array<wchar_t, 4> tool_ids;
    tool_ids = { ImGui::CircleButtonIcon, ImGui::SphereButtonIcon, ImGui::TriangleButtonIcon, ImGui::FillButtonIcon };
    std::array<wchar_t, 4> icons;
    if (m_is_dark_mode)
        icons = { ImGui::CircleButtonDarkIcon, ImGui::SphereButtonDarkIcon, ImGui::TriangleButtonDarkIcon, ImGui::FillButtonDarkIcon };
    else
        icons = { ImGui::CircleButtonIcon, ImGui::SphereButtonIcon, ImGui::TriangleButtonIcon, ImGui::FillButtonIcon };
    std::array<wxString, 4> tool_tips = { _L("Circle"), _L("Sphere"), _L("Triangle"), _L("Fill") };
    for (int i = 0; i < tool_ids.size(); i++) {
        std::string  str_label = std::string("");
        std::wstring btn_name  = icons[i] + boost::nowide::widen(str_label);

        if (i != 0) ImGui::SameLine((empty_button_width + m_imgui->scaled(1.75f)) * i + m_imgui->scaled(1.5f));
        ImGui::PushStyleVar(ImGuiStyleVar_FrameBorderSize, 0.0);
        ImGui::PushStyleColor(ImGuiCol_Button, ImVec4(0.f, 0.f, 0.f, 0.f));                     // ORCA Removes button background on dark mode
        ImGui::PushStyleColor(ImGuiCol_Text, ImVec4(1.f, 1.f, 1.f, 1.f));                       // ORCA Fixes icon rendered without colors while using Light theme
        if (m_current_tool == tool_ids[i]) {
            ImGui::PushStyleColor(ImGuiCol_Button,          ImVec4(0.f, 0.59f, 0.53f, 0.25f));  // ORCA use orca color for selected tool / brush
            ImGui::PushStyleColor(ImGuiCol_ButtonHovered,   ImVec4(0.f, 0.59f, 0.53f, 0.25f));  // ORCA use orca color for selected tool / brush
            ImGui::PushStyleColor(ImGuiCol_ButtonActive,    ImVec4(0.f, 0.59f, 0.53f, 0.30f));  // ORCA use orca color for selected tool / brush
            ImGui::PushStyleColor(ImGuiCol_Border,          ImGuiWrapper::COL_ORCA);            // ORCA use orca color for border on selected tool / brush
            ImGui::PushStyleVar(ImGuiStyleVar_FrameBorderSize, 1.0);
            ImGui::PushStyleVar(ImGuiStyleVar_FrameRounding, 1.0);
        }
        bool btn_clicked = ImGui::Button(into_u8(btn_name).c_str());
        if (m_current_tool == tool_ids[i])
        {
            ImGui::PopStyleColor(4);
            ImGui::PopStyleVar(2);
        }
        ImGui::PopStyleColor(2);
        ImGui::PopStyleVar(1);

        if (btn_clicked && m_current_tool != tool_ids[i]) {
            m_current_tool = tool_ids[i];
            for (auto &triangle_selector : m_triangle_selectors) {
                triangle_selector->seed_fill_unselect_all_triangles();
                triangle_selector->request_update_render_data();
            }
        }

        if (ImGui::IsItemHovered()) {
            m_imgui->tooltip(tool_tips[i], max_tooltip_width);
        }
    }

    ImGui::Dummy(ImVec2(0.0f, ImGui::GetFontSize() * 0.1));

    if (m_current_tool == ImGui::CircleButtonIcon || m_current_tool == ImGui::SphereButtonIcon) {
        if (m_current_tool == ImGui::CircleButtonIcon)
            m_cursor_type = TriangleSelector::CursorType::CIRCLE;
        else
            m_cursor_type = TriangleSelector::CursorType::SPHERE;
        m_tool_type = ToolType::BRUSH;

        ImGui::AlignTextToFramePadding();
        m_imgui->text(m_desc.at("cursor_size"));
        ImGui::SameLine(circle_max_width);
        ImGui::PushItemWidth(sliders_width);
        m_imgui->bbl_slider_float_style("##cursor_radius", &m_cursor_radius, CursorRadiusMin, CursorRadiusMax, "%.2f", 1.0f, true);
        ImGui::SameLine(drag_left_width + circle_max_width);
        ImGui::PushItemWidth(1.5 * slider_icon_width);
        ImGui::BBLDragFloat("##cursor_radius_input", &m_cursor_radius, 0.05f, 0.0f, 0.0f, "%.2f");
    } else if (m_current_tool == ImGui::TriangleButtonIcon) {
        m_cursor_type = TriangleSelector::CursorType::POINTER;
        m_tool_type   = ToolType::BRUSH;
    } else {
        assert(m_current_tool == ImGui::FillButtonIcon);
        m_cursor_type = TriangleSelector::CursorType::POINTER;
        m_tool_type = ToolType::SMART_FILL;

        ImGui::AlignTextToFramePadding();
        m_imgui->text(m_desc["smart_fill_angle"]);
        std::string format_str = std::string("%.f") +
                                 I18N::translate_utf8("°", "Degree sign to use in the respective slider in fuzzy skin gizmo,"
                                                           "placed after the number with no whitespace in between.");
        ImGui::SameLine(sliders_left_width);
        ImGui::PushItemWidth(sliders_width);
        if (m_imgui->bbl_slider_float_style("##smart_fill_angle", &m_smart_fill_angle, SmartFillAngleMin, SmartFillAngleMax, format_str.data(), 1.0f, true))
            for (auto &triangle_selector : m_triangle_selectors) {
                triangle_selector->seed_fill_unselect_all_triangles();
                triangle_selector->request_update_render_data();
            }
        ImGui::SameLine(drag_left_width + sliders_left_width);
        ImGui::PushItemWidth(1.5 * slider_icon_width);
        ImGui::BBLDragFloat("##smart_fill_angle_input", &m_smart_fill_angle, 0.05f, 0.0f, 0.0f, "%.2f");
    }

    ImGui::Separator();
    if (m_c->object_clipper()->get_position() == 0.f) {
        ImGui::AlignTextToFramePadding();
        m_imgui->text(m_desc.at("clipping_of_view"));
    }
    else {
        if (m_imgui->button(m_desc.at("reset_direction"))) {
            wxGetApp().CallAfter([this](){
                    m_c->object_clipper()->set_position_by_ratio(-1., false);
                });
        }
    }

    auto clp_dist = float(m_c->object_clipper()->get_position());
    ImGui::SameLine(sliders_left_width);

    ImGui::PushItemWidth(sliders_width);
    bool slider_clp_dist = m_imgui->bbl_slider_float_style("##clp_dist", &clp_dist, 0.f, 1.f, "%.2f", 1.0f, true);

    ImGui::SameLine(drag_left_width + sliders_left_width);
    ImGui::PushItemWidth(1.5 * slider_icon_width);
    bool b_clp_dist_input = ImGui::BBLDragFloat("##clp_dist_input", &clp_dist, 0.05f, 0.0f, 0.0f, "%.2f");
    if (slider_clp_dist || b_clp_dist_input) { m_c->object_clipper()->set_position_by_ratio(clp_dist, true); }

    ImGui::Separator();

    ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacing, ImVec2(6.0f, 10.0f));
    float get_cur_y = ImGui::GetContentRegionMax().y + ImGui::GetFrameHeight() + y;
    show_tooltip_information(caption_max, x, get_cur_y);

    float f_scale = m_parent.get_gizmos_manager().get_layout_scale();
    ImGui::PushStyleVar(ImGuiStyleVar_FramePadding, ImVec2(6.0f, 4.0f * f_scale));

    ImGui::SameLine();

    if (m_imgui->button(m_desc.at("remove_all"))) {
        Plater::TakeSnapshot snapshot(wxGetApp().plater(), _u8L("Reset selection"), UndoRedo::SnapshotType::GizmoAction);
        ModelObject         *mo  = m_c->selection_info()->model_object();
        int                  idx = -1;
        for (ModelVolume *mv : mo->volumes)
            if (mv->is_model_part()) {
                ++idx;
                m_triangle_selectors[idx]->reset();
                m_triangle_selectors[idx]->request_update_render_data(true);
            }

        update_model_object();
        m_parent.set_as_dirty();
    }
    ImGui::PopStyleVar(2);
    GizmoImguiEnd();

    // BBS
    ImGuiWrapper::pop_toolbar_style();
}

void GLGizmoFuzzySkin::update_model_object()
{
    bool         updated = false;
    ModelObject *mo      = m_c->selection_info()->model_object();
    int          idx     = -1;
    for (ModelVolume *mv : mo->volumes) {
        if (!mv->is_model_part())
            continue;

        ++idx;
        updated |= mv->fuzzy_skin_facets.set(*m_triangle_selectors[idx]);
    }

    if (updated) {
        const ModelObjectPtrs &mos = wxGetApp().model().objects;
        wxGetApp().obj_list()->update_info_items(std::find(mos.begin(), mos.end(), mo) - mos.begin());

        m_parent.post_event(SimpleEvent(EVT_GLCANVAS_SCHEDULE_BACKGROUND_PROCESS));
    }
}

void GLGizmoFuzzySkin::update_from_model_object(bool first_update)
{
    wxBusyCursor wait;

    const ModelObject *mo = m_c->selection_info()->model_object();
    m_triangle_selectors.clear();

    int volume_id = -1;
    std::vector<ColorRGBA> ebt_colors;
    ebt_colors.push_back(GLVolume::NEUTRAL_COLOR);
    ebt_colors.push_back(TriangleSelectorGUI::enforcers_color);
    ebt_colors.push_back(TriangleSelectorGUI::blockers_color);
    for (const ModelVolume *mv : mo->volumes) {
        if (!mv->is_model_part())
            continue;

        ++volume_id;

        // This mesh does not account for the possible Z up SLA offset.
        const TriangleMesh* mesh = &mv->mesh();
        m_triangle_selectors.emplace_back(std::make_unique<TriangleSelectorPatch>(*mesh, ebt_colors));
        // Reset of TriangleSelector is done inside TriangleSelectorGUI's constructor, so we don't need it to perform it again in deserialize().
        m_triangle_selectors.back()->deserialize(mv->fuzzy_skin_facets.get_data(), false);
        m_triangle_selectors.back()->request_update_render_data();
    }
}

PainterGizmoType GLGizmoFuzzySkin::get_painter_type() const
{
    return PainterGizmoType::FUZZY_SKIN;
}

wxString GLGizmoFuzzySkin::handle_snapshot_action_name(bool shift_down, GLGizmoPainterBase::Button button_down) const
{
    return shift_down ? _L("Remove fuzzy skin") : _L("Add fuzzy skin");
}

} // namespace Slic3r::GUI