#include "stdafx.h"
#include "EnvProbeWindow.h"

using namespace wi::ecs;
using namespace wi::scene;

const std::string default_text = "Environment probes can be used to capture the scene from a specific location in a 360 degrees panorama. The probes will be used for reflections fallback, where a better reflection type is not available. The probes can affect the ambient colors slightly.\nTip: You can scale, rotate and move the probes to set up parallax correct rendering to affect a specific area only. The parallax correction will take effect inside the probe's bounds (indicated with a cyan colored box).";

void EnvProbeWindow::Create(EditorComponent* _editor)
{
	editor = _editor;
	wi::gui::Window::Create(ICON_ENVIRONMENTPROBE " Environment Probe", wi::gui::Window::WindowControls::COLLAPSE | wi::gui::Window::WindowControls::CLOSE | wi::gui::Window::WindowControls::FIT_ALL_WIDGETS_VERTICAL);
	SetSize(XMFLOAT2(420, 340));

	closeButton.SetTooltip("Delete EnvironmentProbeComponent");
	OnClose([=](wi::gui::EventArgs args) {

		wi::Archive& archive = editor->AdvanceHistory();
		archive << EditorComponent::HISTORYOP_COMPONENT_DATA;
		editor->RecordEntity(archive, entity);

		editor->GetCurrentScene().probes.Remove(entity);

		editor->RecordEntity(archive, entity);

		editor->componentsWnd.RefreshEntityTree();
	});

	infoLabel.Create("");
	infoLabel.SetColor(wi::Color::Transparent());
	infoLabel.SetFitTextEnabled(true);
	AddWidget(&infoLabel);

	auto forEachSelected = [this] (auto func) {
		return [this, func] (auto args) {
			wi::scene::Scene& scene = editor->GetCurrentScene();
			for (auto& x : editor->translator.selected)
			{
				EnvironmentProbeComponent* probe = scene.probes.GetComponent(x.entity);
				if (probe != nullptr)
				{
					func(probe, args);
				}
			}
		};
	};

	realTimeCheckBox.Create("RealTime: ");
	realTimeCheckBox.SetTooltip("Enable continuous rendering of the probe in every frame.");
	realTimeCheckBox.SetEnabled(false);
	realTimeCheckBox.OnClick(forEachSelected([] (auto probe, auto args) {
		probe->SetRealTime(args.bValue);
		probe->SetDirty();
	}));
	AddWidget(&realTimeCheckBox);

	msaaCheckBox.Create("MSAA: ");
	msaaCheckBox.SetTooltip("Enable Multi Sampling Anti Aliasing for the probe, this will improve its quality.");
	msaaCheckBox.SetEnabled(false);
	msaaCheckBox.OnClick(forEachSelected([] (auto probe, auto args) {
		probe->SetMSAA(args.bValue);
		probe->SetDirty();
	}));
	AddWidget(&msaaCheckBox);

	realtimeFrameIntervalSlider.Create(0.0f, 2.0f, 0.0f, 200, "Update Interval: ");
	realtimeFrameIntervalSlider.SetTooltip("Control how often real-time probes render in seconds. 0 - every frame, 1.0 - once per second, etc.");
	realtimeFrameIntervalSlider.SetEnabled(false);
	realtimeFrameIntervalSlider.OnSlide(forEachSelected([] (auto probe, auto args) {
		probe->realtime_update_interval = args.fValue;
	}));
	AddWidget(&realtimeFrameIntervalSlider);

	refreshButton.Create("Refresh");
	refreshButton.SetTooltip("Re-renders the selected probe.");
	refreshButton.SetEnabled(false);
	refreshButton.OnClick(forEachSelected([] (auto probe, auto args) {
		probe->SetDirty();
	}));
	AddWidget(&refreshButton);

	refreshAllButton.Create("Refresh All");
	refreshAllButton.SetTooltip("Re-renders all probes in the scene.");
	refreshAllButton.SetEnabled(true);
	refreshAllButton.OnClick(forEachSelected([] (auto probe, auto args) {
		probe->SetDirty();
	}));
	AddWidget(&refreshAllButton);

	importButton.Create("Import Cubemap");
	importButton.SetTooltip("Import a DDS texture file into the selected environment probe.");
	importButton.SetEnabled(false);
	importButton.OnClick(forEachSelected([] (auto probe, auto args) {
		if (probe != nullptr && probe->texture.IsValid())
		{
			wi::helper::FileDialogParams params;
			params.type = wi::helper::FileDialogParams::OPEN;
			params.description = "DDS";
			params.extensions = { "DDS" };
			wi::helper::FileDialog(params, [=](std::string fileName) {
				wi::eventhandler::Subscribe_Once(wi::eventhandler::EVENT_THREAD_SAFE_POINT, [=](uint64_t userdata) {

					wi::Resource resource = wi::resourcemanager::Load(fileName);
					if (has_flag(resource.GetTexture().GetDesc().misc_flags, wi::graphics::ResourceMiscFlag::TEXTURECUBE))
					{
						probe->textureName = fileName;
						probe->CreateRenderData();
					}
					else
					{
						wi::helper::messageBox("Error!", "The texture you tried to open is not a cubemap texture, so it won't be imported!");
					}

					});
				});

		}
	}));
	AddWidget(&importButton);

	exportButton.Create("Export Cubemap");
	exportButton.SetTooltip("Export the selected probe into a DDS cubemap texture file.");
	exportButton.SetEnabled(false);
	exportButton.OnClick(forEachSelected([this] (auto probe, auto args) {
		if (probe != nullptr && probe->texture.IsValid())
		{
			wi::helper::FileDialogParams params;
			params.type = wi::helper::FileDialogParams::SAVE;
			params.description = "DDS";
			params.extensions = { "DDS" };
			wi::helper::FileDialog(params, [this, probe](std::string fileName) {
				wi::eventhandler::Subscribe_Once(wi::eventhandler::EVENT_THREAD_SAFE_POINT, [=](uint64_t userdata) {

					std::string extension = wi::helper::toUpper(wi::helper::GetExtensionFromFileName(fileName));
					std::string filename_replaced = fileName;
					if (extension != "DDS")
					{
						filename_replaced = wi::helper::ReplaceExtension(fileName, "DDS");
					}

					bool success = wi::helper::saveTextureToFile(probe->texture, filename_replaced);
					assert(success);

					if (success)
					{
						editor->PostSaveText("Exported environment cubemap: ", filename_replaced);
					}

					});
				});

		}
	}));
	AddWidget(&exportButton);


	resolutionCombo.Create("Resolution: ");
	resolutionCombo.SetTooltip("Set the resolution of the selected environment probe. Only takes effect if this is a rendered probe, not for probes that are imported from files.");
	resolutionCombo.AddItem("32", 32);
	resolutionCombo.AddItem("64", 64);
	resolutionCombo.AddItem("128", 128);
	resolutionCombo.AddItem("256", 256);
	resolutionCombo.AddItem("512", 512);
	resolutionCombo.AddItem("1024", 1024);
	resolutionCombo.AddItem("2048", 2048);
	resolutionCombo.OnSelect(forEachSelected([] (auto probe, auto args) {
		uint32_t resolution = (uint32_t)args.userdata;
		if (probe->resolution != resolution)
		{
			probe->resolution = resolution;
			probe->first_render = true;
			probe->CreateRenderData();
		}
	}));
	AddWidget(&resolutionCombo);


	SetMinimized(true);
	SetVisible(false);

	SetEntity(INVALID_ENTITY);
}

void EnvProbeWindow::SetEntity(Entity entity)
{
	this->entity = entity;

	Scene& scene = editor->GetCurrentScene();
	const EnvironmentProbeComponent* probe = scene.probes.GetComponent(entity);

	if (probe == nullptr)
	{
		realTimeCheckBox.SetEnabled(false);
		msaaCheckBox.SetEnabled(false);
		realtimeFrameIntervalSlider.SetEnabled(false);
		refreshButton.SetEnabled(false);
	}
	else
	{
		realTimeCheckBox.SetCheck(probe->IsRealTime());
		realTimeCheckBox.SetEnabled(true);
		msaaCheckBox.SetCheck(probe->IsMSAA());
		msaaCheckBox.SetEnabled(true);
		realtimeFrameIntervalSlider.SetValue(probe->realtime_update_interval);
		realtimeFrameIntervalSlider.SetEnabled(true);
		refreshButton.SetEnabled(true);
		resolutionCombo.SetSelectedByUserdata(probe->resolution);

		std::string text =
			"GPU Memory usage: " + wi::helper::GetMemorySizeText(probe->GetMemorySizeInBytes()) + "\n" +
			"Resolution: " + std::to_string(probe->texture.desc.width) + "\n" +
			"Mipmaps: " + std::to_string(probe->texture.desc.mip_levels) + "\n" +
			"Format: " + std::string(wi::graphics::GetFormatString(probe->texture.desc.format)) + "\n"
			;
		if (!probe->textureName.empty())
		{
			text += "Filename: " + probe->textureName + "\n";
		}
		text += "\n" + default_text;
		infoLabel.SetText(text);
	}

}


void EnvProbeWindow::ResizeLayout()
{
	wi::gui::Window::ResizeLayout();
	layout.margin_left = 80;

	layout.add_fullwidth(infoLabel);

	refreshButton.SetSize(XMFLOAT2(layout.width * 0.5f - layout.padding * 1.5f, refreshButton.GetSize().y));
	refreshAllButton.SetSize(refreshButton.GetSize());
	refreshAllButton.SetPos(XMFLOAT2(layout.width - layout.padding - refreshButton.GetSize().x, layout.y));
	refreshButton.SetPos(XMFLOAT2(refreshAllButton.GetPos().x - layout.padding - refreshButton.GetSize().x, layout.y));
	layout.y += refreshAllButton.GetSize().y;
	layout.y += layout.padding;

	importButton.SetSize(XMFLOAT2(layout.width - layout.padding * 2, importButton.GetSize().y));
	importButton.SetPos(XMFLOAT2(layout.padding, layout.y));
	layout.y += importButton.GetSize().y;
	layout.y += layout.padding;

	exportButton.SetSize(XMFLOAT2(layout.width - layout.padding * 2, exportButton.GetSize().y));
	exportButton.SetPos(XMFLOAT2(layout.padding, layout.y));
	layout.y += exportButton.GetSize().y;
	layout.y += layout.padding;

	layout.add(resolutionCombo);

	layout.add_right(realTimeCheckBox);
	layout.add_right(msaaCheckBox);
	layout.add_right(realtimeFrameIntervalSlider);
}