#pragma once

#include <XCEngine/UI/DrawData.h>
#include <XCEngine/UI/Widgets/UIExpansionModel.h>
#include <XCEngine/UI/Widgets/UIPropertyEditModel.h>
#include <XCEngine/UI/Widgets/UISelectionModel.h>

#include <cstddef>
#include <cstdint>
#include <string>
#include <string_view>
#include <vector>

namespace XCEngine::UI::Editor::Widgets {

inline constexpr std::size_t UIEditorPropertyGridInvalidIndex = static_cast<std::size_t>(-1);

enum class UIEditorPropertyGridHitTargetKind : std::uint8_t {
    None = 0,
    SectionHeader,
    FieldRow,
    ValueBox
};

struct UIEditorPropertyGridFieldLocation {
    std::size_t sectionIndex = UIEditorPropertyGridInvalidIndex;
    std::size_t fieldIndex = UIEditorPropertyGridInvalidIndex;

    constexpr bool IsValid() const {
        return sectionIndex != UIEditorPropertyGridInvalidIndex &&
            fieldIndex != UIEditorPropertyGridInvalidIndex;
    }
};

struct UIEditorPropertyGridField {
    std::string fieldId = {};
    std::string label = {};
    std::string valueText = {};
    bool readOnly = false;
    float desiredHeight = 0.0f;
};

struct UIEditorPropertyGridSection {
    std::string sectionId = {};
    std::string title = {};
    std::vector<UIEditorPropertyGridField> fields = {};
    float desiredHeaderHeight = 0.0f;
};

struct UIEditorPropertyGridState {
    std::string hoveredSectionId = {};
    std::string hoveredFieldId = {};
    bool focused = false;
};

struct UIEditorPropertyGridMetrics {
    float contentInset = 8.0f;
    float sectionGap = 8.0f;
    float sectionHeaderHeight = 32.0f;
    float fieldRowHeight = 32.0f;
    float rowGap = 2.0f;
    float horizontalPadding = 12.0f;
    float controlColumnStart = 236.0f;
    float labelControlGap = 20.0f;
    float disclosureExtent = 12.0f;
    float disclosureLabelGap = 8.0f;
    float sectionTextInsetY = 8.0f;
    float labelTextInsetY = 8.0f;
    float valueTextInsetY = 8.0f;
    float valueBoxInsetY = 4.0f;
    float valueBoxInsetX = 8.0f;
    float cornerRounding = 6.0f;
    float valueBoxRounding = 5.0f;
    float borderThickness = 1.0f;
    float focusedBorderThickness = 2.0f;
    float editOutlineThickness = 1.0f;
};

struct UIEditorPropertyGridPalette {
    ::XCEngine::UI::UIColor surfaceColor =
        ::XCEngine::UI::UIColor(0.14f, 0.14f, 0.14f, 1.0f);
    ::XCEngine::UI::UIColor borderColor =
        ::XCEngine::UI::UIColor(0.29f, 0.29f, 0.29f, 1.0f);
    ::XCEngine::UI::UIColor focusedBorderColor =
        ::XCEngine::UI::UIColor(0.84f, 0.84f, 0.84f, 1.0f);
    ::XCEngine::UI::UIColor sectionHeaderColor =
        ::XCEngine::UI::UIColor(0.19f, 0.19f, 0.19f, 1.0f);
    ::XCEngine::UI::UIColor sectionHeaderHoverColor =
        ::XCEngine::UI::UIColor(0.24f, 0.24f, 0.24f, 1.0f);
    ::XCEngine::UI::UIColor fieldHoverColor =
        ::XCEngine::UI::UIColor(0.24f, 0.24f, 0.24f, 1.0f);
    ::XCEngine::UI::UIColor fieldSelectedColor =
        ::XCEngine::UI::UIColor(0.31f, 0.31f, 0.31f, 1.0f);
    ::XCEngine::UI::UIColor fieldSelectedFocusedColor =
        ::XCEngine::UI::UIColor(0.40f, 0.40f, 0.40f, 1.0f);
    ::XCEngine::UI::UIColor valueBoxColor =
        ::XCEngine::UI::UIColor(0.17f, 0.17f, 0.17f, 1.0f);
    ::XCEngine::UI::UIColor valueBoxHoverColor =
        ::XCEngine::UI::UIColor(0.22f, 0.22f, 0.22f, 1.0f);
    ::XCEngine::UI::UIColor valueBoxEditingColor =
        ::XCEngine::UI::UIColor(0.24f, 0.24f, 0.24f, 1.0f);
    ::XCEngine::UI::UIColor valueBoxReadOnlyColor =
        ::XCEngine::UI::UIColor(0.15f, 0.15f, 0.15f, 1.0f);
    ::XCEngine::UI::UIColor valueBoxBorderColor =
        ::XCEngine::UI::UIColor(0.32f, 0.32f, 0.32f, 1.0f);
    ::XCEngine::UI::UIColor valueBoxEditingBorderColor =
        ::XCEngine::UI::UIColor(0.75f, 0.75f, 0.75f, 1.0f);
    ::XCEngine::UI::UIColor disclosureColor =
        ::XCEngine::UI::UIColor(0.74f, 0.74f, 0.74f, 1.0f);
    ::XCEngine::UI::UIColor sectionTextColor =
        ::XCEngine::UI::UIColor(0.94f, 0.94f, 0.94f, 1.0f);
    ::XCEngine::UI::UIColor labelTextColor =
        ::XCEngine::UI::UIColor(0.84f, 0.84f, 0.84f, 1.0f);
    ::XCEngine::UI::UIColor valueTextColor =
        ::XCEngine::UI::UIColor(0.94f, 0.94f, 0.94f, 1.0f);
    ::XCEngine::UI::UIColor readOnlyValueTextColor =
        ::XCEngine::UI::UIColor(0.60f, 0.60f, 0.60f, 1.0f);
    ::XCEngine::UI::UIColor editTagColor =
        ::XCEngine::UI::UIColor(0.62f, 0.78f, 0.96f, 1.0f);
};

struct UIEditorPropertyGridLayout {
    ::XCEngine::UI::UIRect bounds = {};
    std::vector<std::size_t> sectionIndices = {};
    std::vector<::XCEngine::UI::UIRect> sectionHeaderRects = {};
    std::vector<::XCEngine::UI::UIRect> sectionDisclosureRects = {};
    std::vector<::XCEngine::UI::UIRect> sectionTitleRects = {};
    std::vector<bool> sectionExpanded = {};
    std::vector<std::size_t> visibleFieldSectionIndices = {};
    std::vector<std::size_t> visibleFieldIndices = {};
    std::vector<::XCEngine::UI::UIRect> fieldRowRects = {};
    std::vector<::XCEngine::UI::UIRect> fieldLabelRects = {};
    std::vector<::XCEngine::UI::UIRect> fieldValueRects = {};
    std::vector<bool> fieldReadOnly = {};
};

struct UIEditorPropertyGridHitTarget {
    UIEditorPropertyGridHitTargetKind kind = UIEditorPropertyGridHitTargetKind::None;
    std::size_t sectionIndex = UIEditorPropertyGridInvalidIndex;
    std::size_t fieldIndex = UIEditorPropertyGridInvalidIndex;
    std::size_t visibleFieldIndex = UIEditorPropertyGridInvalidIndex;
};

bool IsUIEditorPropertyGridPointInside(
    const ::XCEngine::UI::UIRect& rect,
    const ::XCEngine::UI::UIPoint& point);

std::size_t FindUIEditorPropertyGridSectionIndex(
    const std::vector<UIEditorPropertyGridSection>& sections,
    std::string_view sectionId);

UIEditorPropertyGridFieldLocation FindUIEditorPropertyGridFieldLocation(
    const std::vector<UIEditorPropertyGridSection>& sections,
    std::string_view fieldId);

std::size_t FindUIEditorPropertyGridVisibleFieldIndex(
    const UIEditorPropertyGridLayout& layout,
    std::string_view fieldId,
    const std::vector<UIEditorPropertyGridSection>& sections);

UIEditorPropertyGridLayout BuildUIEditorPropertyGridLayout(
    const ::XCEngine::UI::UIRect& bounds,
    const std::vector<UIEditorPropertyGridSection>& sections,
    const ::XCEngine::UI::Widgets::UIExpansionModel& expansionModel,
    const UIEditorPropertyGridMetrics& metrics = {});

UIEditorPropertyGridHitTarget HitTestUIEditorPropertyGrid(
    const UIEditorPropertyGridLayout& layout,
    const ::XCEngine::UI::UIPoint& point);

void AppendUIEditorPropertyGridBackground(
    ::XCEngine::UI::UIDrawList& drawList,
    const UIEditorPropertyGridLayout& layout,
    const std::vector<UIEditorPropertyGridSection>& sections,
    const ::XCEngine::UI::Widgets::UISelectionModel& selectionModel,
    const ::XCEngine::UI::Widgets::UIPropertyEditModel& propertyEditModel,
    const UIEditorPropertyGridState& state,
    const UIEditorPropertyGridPalette& palette = {},
    const UIEditorPropertyGridMetrics& metrics = {});

void AppendUIEditorPropertyGridForeground(
    ::XCEngine::UI::UIDrawList& drawList,
    const UIEditorPropertyGridLayout& layout,
    const std::vector<UIEditorPropertyGridSection>& sections,
    const ::XCEngine::UI::Widgets::UIPropertyEditModel& propertyEditModel,
    const UIEditorPropertyGridPalette& palette = {},
    const UIEditorPropertyGridMetrics& metrics = {});

void AppendUIEditorPropertyGrid(
    ::XCEngine::UI::UIDrawList& drawList,
    const ::XCEngine::UI::UIRect& bounds,
    const std::vector<UIEditorPropertyGridSection>& sections,
    const ::XCEngine::UI::Widgets::UISelectionModel& selectionModel,
    const ::XCEngine::UI::Widgets::UIExpansionModel& expansionModel,
    const ::XCEngine::UI::Widgets::UIPropertyEditModel& propertyEditModel,
    const UIEditorPropertyGridState& state,
    const UIEditorPropertyGridPalette& palette = {},
    const UIEditorPropertyGridMetrics& metrics = {});

} // namespace XCEngine::UI::Editor::Widgets