/*
 * 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 "Drawable.hpp"
#include "Texture.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 backgroundColor = { 0, 1, 0, 0 };
		float threshold = 0.4f;
		float smoothing = 1.f/32.f;
	};

	class TextDrawable : public Drawable
	{
		Geometry m_geometry;
		UniformBuffer m_uniBuffer;
		std::shared_ptr<AtlasData> m_atlasData;
		Math::AABB m_bbox;
		std::string m_text;
		TextConfig m_cfg;

		uint32_t GetFallbackGlyph() const;

	public:
		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; }

		[[nodiscard]] Geometry* GetGeometry() { return &m_geometry; }
		[[nodiscard]] Texture* GetTexture() { return &m_atlasData->texture; }
		[[nodiscard]] UniformBuffer* GetUniformBuffer() { return &m_uniBuffer; }
	};
}