#include "resource_shader.h"
#include "debug.h"
#include "substring.h"

ResourceShader::ResourceShader(const std::string& vertexShaderName, const std::string& fragmentShaderName, const Resources::KeepLevel& keepLevel)
    : Resource(&ResourceShader::type)
{
  Resources::StorePointer* ptr = this->acquireResource(vertexShaderName +','+fragmentShaderName);

  if (ptr)
  {
    PRINTF(5)("FOUND SHADER: %s\n", vertexShaderName.c_str());
    this->acquireData(static_cast<ResourceShader::ShaderResourcePointer*>(ptr)->ptr());
  }
  else
  {
    PRINTF(5)("NOT FOUND SHADER: %s\n", vertexShaderName.c_str());
    std::string vertexFileName = this->Resource::locateFile(vertexShaderName);
    std::string fragmentFileName;
    if (!fragmentShaderName.empty())
      fragmentFileName = this->Resource::locateFile(fragmentShaderName);

    this->Shader::load(vertexFileName, fragmentFileName);
    this->Resource::addResource(new ResourceShader::ShaderResourcePointer(vertexShaderName+','+fragmentShaderName, keepLevel, this->Shader::dataPointer()));
  }
}

ResourceShader ResourceShader::createFromString(const std::string& loadString, const Resources::KeepLevel& keepLevel)
{
  std::string vertexShaderName;
  std::string fragmentShaderName;

  SubString shaderNames(loadString, ',');
  if (shaderNames.size() > 0)
    vertexShaderName = shaderNames[0];
  if (shaderNames.size() > 1)
    fragmentShaderName = shaderNames[1];

  return ResourceShader(vertexShaderName, fragmentShaderName, keepLevel);
}

Resources::tType<ResourceShader> ResourceShader::type("Shader");

ResourceShader::ShaderResourcePointer::ShaderResourcePointer(const std::string& loadString, const Resources::KeepLevel& keepLevel, const ShaderData::Pointer& data)
    : Resources::StorePointer(loadString, keepLevel) , pointer(data)
{}