XCEngine/editor/src/ComponentEditors/LightComponentEditor.h

#pragma once

#include "IComponentEditor.h"
#include "UI/UI.h"

#include <XCEngine/Components/LightComponent.h>

namespace XCEngine {
namespace Editor {

class LightComponentEditor : public IComponentEditor {
public:
    const char* GetDisplayName() const override {
        return "Light";
    }

    bool CanEdit(::XCEngine::Components::Component* component) const override {
        return dynamic_cast<::XCEngine::Components::LightComponent*>(component) != nullptr;
    }

    bool Render(::XCEngine::Components::Component* component, IUndoManager* undoManager) override {
        auto* light = dynamic_cast<::XCEngine::Components::LightComponent*>(component);
        if (!light) {
            return false;
        }

        int lightType = static_cast<int>(light->GetLightType());
        const char* lightTypeLabels[] = { "Directional", "Point", "Spot" };
        bool changed = false;
        if (ImGui::Combo("Type", &lightType, lightTypeLabels, 3)) {
            if (undoManager) {
                undoManager->BeginInteractiveChange("Modify Light");
            }
            light->SetLightType(static_cast<::XCEngine::Components::LightType>(lightType));
            changed = true;
        }

        float color[4] = {
            light->GetColor().r,
            light->GetColor().g,
            light->GetColor().b,
            light->GetColor().a
        };
        if (UI::DrawColor4("Color", color)) {
            if (undoManager) {
                undoManager->BeginInteractiveChange("Modify Light");
            }
            light->SetColor(::XCEngine::Math::Color(color[0], color[1], color[2], color[3]));
            changed = true;
        }

        float intensity = light->GetIntensity();
        if (UI::DrawFloat("Intensity", intensity, 100.0f, 0.1f, 0.0f)) {
            if (undoManager) {
                undoManager->BeginInteractiveChange("Modify Light");
            }
            light->SetIntensity(intensity);
            changed = true;
        }

        if (light->GetLightType() != ::XCEngine::Components::LightType::Directional) {
            float range = light->GetRange();
            if (UI::DrawFloat("Range", range, 100.0f, 0.1f, 0.001f)) {
                if (undoManager) {
                    undoManager->BeginInteractiveChange("Modify Light");
                }
                light->SetRange(range);
                changed = true;
            }
        }

        if (light->GetLightType() == ::XCEngine::Components::LightType::Spot) {
            float spotAngle = light->GetSpotAngle();
            if (UI::DrawSliderFloat("Spot Angle", spotAngle, 1.0f, 179.0f, 100.0f, "%.1f")) {
                if (undoManager) {
                    undoManager->BeginInteractiveChange("Modify Light");
                }
                light->SetSpotAngle(spotAngle);
                changed = true;
            }
        }

        bool castsShadows = light->GetCastsShadows();
        if (UI::DrawBool("Cast Shadows", castsShadows)) {
            if (undoManager) {
                undoManager->BeginInteractiveChange("Modify Light");
            }
            light->SetCastsShadows(castsShadows);
            changed = true;
        }

        return changed;
    }

    bool CanAddTo(::XCEngine::Components::GameObject* gameObject) const override {
        return gameObject && !gameObject->GetComponent<::XCEngine::Components::LightComponent>();
    }

    const char* GetAddDisabledReason(::XCEngine::Components::GameObject* gameObject) const override {
        if (!gameObject) {
            return "Invalid";
        }
        return gameObject->GetComponent<::XCEngine::Components::LightComponent>() ? "Already Added" : nullptr;
    }

    ::XCEngine::Components::Component* AddTo(::XCEngine::Components::GameObject* gameObject) const override {
        return gameObject ? gameObject->AddComponent<::XCEngine::Components::LightComponent>() : nullptr;
    }

    bool CanRemove(::XCEngine::Components::Component* component) const override {
        return CanEdit(component);
    }
};

} // namespace Editor
} // namespace XCEngine