#pragma once

#include <string>
#include <glm/glm.hpp>

#include <charcoal/Font.h>

#include "GLUtil.h"
#include "BuiltinPipeline.h"
#include "WithCamera.h"
#include "TextTypes.h"
#include "TextBatch.h"

namespace charcoal
{
	namespace builtin
	{
		namespace text
		{
			class Pipeline : private builtin::Pipeline<ShaderProgram, Batch>, public WithCamera
			{
			public:
				Pipeline(
					Font& font
				)
					: m_font(font)
				{
					// TODO: Initialize character batches.
				}

				void render()
				{
					builtin::Pipeline<ShaderProgram, Batch>::render();
				}

				void add_text(const vec3& position, const std::string& text)
				{

				}
			protected:
				void prepare_opengl() override
				{
					glEnable(GL_DEPTH_TEST);
					glDepthFunc(GL_LESS);
					glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
					glEnable(GL_BLEND);
				}

				void prepare_uniforms() override
				{
					glutil::uniform_matrix(0, get_camera()->get_world_to_view_matrix());
				}

			private:
				Font& m_font;
			};
		}
	}
}