#include <memory>
#include "Shader.hpp"

gl::Shader::Shader (Wrangler &gl, GLenum type, const char *source)
	: gl (gl)
{
	this->id = gl.CreateShader (type);

	if (this->id == 0)
		throw "Shader creation failed";

	GLint status;

	gl.ShaderSource (this->id, 1, &source, NULL);
	gl.CompileShader (this->id);
	gl.GetShaderiv (this->id, GL_COMPILE_STATUS, &status);

	if (status == GL_FALSE)
	{
		GLint log_length;

		gl.GetShaderiv (this->id, GL_INFO_LOG_LENGTH, &log_length);

		try
		{
			std::unique_ptr<GLchar[]> log (new GLchar[log_length]);
			gl.GetShaderInfoLog (this->id, log_length, NULL, log.get ());

			throw log;
		}
		catch (...)
		{
			gl.DeleteShader (this->id);
			throw;
		}
	}
}

gl::Shader::~Shader ()
{
	gl.DeleteShader (this->id);
}