#pragma once
#include "utilities.hh"


/*= INPUT FILES ==============================================================*/

// Type of input chunk
enum class E_ShaderInputChunk {
	CODE ,
	INCLUDE
};

// Input chunk data
struct T_ShaderInputChunk
{
	E_ShaderInputChunk type;
	std::string text;
	uint32_t lines;

	T_ShaderInputChunk( ) = default;
	T_ShaderInputChunk(
			__rd__ const E_ShaderInputChunk type ,
			__rd__ std::string text ,
			__rd__ const uint32_t lines )
		: type( type ) , text( std::move( text ) ) , lines( lines )
	{ }
};

// Input file type
enum class E_ShaderInput {
	CHUNK ,			// Chunk that may be repeated
	LIBRARY ,		// Library (will only be loaded once)

	// "Main" shader source files
	VERTEX , FRAGMENT ,
};

// Preprocessing errors
struct T_ShaderInputError
{
	uint32_t line;
	std::string error;
};

// Source file
struct T_ShaderInput
{
	E_ShaderInput type = E_ShaderInput::CHUNK;
	std::vector< T_ShaderInputChunk > chunks;
	std::vector< T_ShaderInputError > errors;

	bool load( __rd__ std::string const& path );
};


//void testLoadShaderFile( );