/*
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at https://mozilla.org/MPL/2.0/.
 */

#pragma once

#include "SimpleDrawable.hpp"
#include "Texture.hpp"
#include "Material.hpp"
#include "Geometry.hpp"
#include "UniformBuffer.hpp"
#include "AtlasData.hpp"
#include "Image/Image.hpp"

namespace OpenVulkano::Scene
{
	class IFontAtlasGenerator;

	struct TextConfig
	{
		Math::Vector4f textColor = { 1, 1, 1, 1 };
		Math::Vector4f borderColor = { 1, 0, 0, 1 };
		Math::Vector4f backgroundColor = { 0, 1, 0, 0 };
		float threshold = 0.4f;
		float borderSize = 0.05f;
		float smoothing = 1.f/32.f;
		uint32_t applyBorder = false;
		//bool sdfMultiChannel = false;
	};

	class TextDrawable : public SimpleDrawable
	{
		static Shader DEFAULT_SHADER_BITMAP, DEFAULT_SHADER_SDF, DEFAULT_SHADER_MSDF;

	public:
		[[nodiscard]] static Shader& GetSdfDefaultShader() { return DEFAULT_SHADER_SDF; }
		[[nodiscard]] static Shader& GetMsdfDefaultShader() { return DEFAULT_SHADER_MSDF; }
		[[nodiscard]] static Shader& GetBitmapDefaultShader() { return DEFAULT_SHADER_BITMAP; }
		TextDrawable(const TextConfig& config = TextConfig());
		TextDrawable(const Array<char>& atlasMetadata, const TextConfig& config = TextConfig());
		TextDrawable(const std::string& atlasMetadataFile, const TextConfig& config = TextConfig());
		TextDrawable(const std::string& atlasMetadataFile, Texture* atlasTex, const TextConfig& config = TextConfig());
		TextDrawable(const Array<char>& atlasMetadata, Texture* atlasTex, const TextConfig& config = TextConfig());
		TextDrawable(const std::shared_ptr<AtlasData>& atlasData, const TextConfig& config = TextConfig());
		void GenerateText(const std::string& text, const Math::Vector3f& pos = Math::Vector3f(0.f)); 
		void SetConfig(const TextConfig& cfg) { m_cfg = cfg; }
		void SetAtlasData(const std::shared_ptr<AtlasData>& atlasData);
		[[nodiscard]] Math::AABB& GetBoundingBox() { return m_bbox; }
		[[nodiscard]] TextConfig& GetConfig() { return m_cfg; }
		[[nodiscard]] const std::string& GetText() const { return m_text; }
		[[nodiscard]] const std::shared_ptr<AtlasData> GetAtlasData() { return m_atlasData; }

	private:
		Geometry m_geometry;
		Material m_material;
		UniformBuffer m_uniBuffer;
		std::shared_ptr<AtlasData> m_atlasData;
		Math::AABB m_bbox;
		std::string m_text;
		TextConfig m_cfg;
	};
}