#include "ShaderScene.h"
#include "ShaderManager.h"
#include "Shader_IndexHeader.h"
#include "Shader_Headers.h"

CShaderManager::CShaderManager() {
	m_lstShaders.clear();
	m_iShadersNum = 0;

}
CShaderManager::~CShaderManager() {
	if((m_iShadersNum >0) && (m_lstShaders.size() > 0)) {
		int i;
		for( i = 0; i < m_lstShaders.size(); i++ ) {
			if(m_lstShaders[i] != NULL) {
				delete m_lstShaders[i];
				m_lstShaders[i] = NULL;
			}
		}
		m_lstShaders.clear();
		m_iShadersNum = 0;
	}
}
void CShaderManager::Apply(int iShaderIndex) {
	if((iShaderIndex >= 0) && (iShaderIndex < m_iShadersNum)) {
		if(m_lstShaders[iShaderIndex] != NULL) {
			m_lstShaders[iShaderIndex]->Apply();
		}
	}
}
void CShaderManager::UnApply(int iShaderIndex) {
	if((iShaderIndex >= 0) && (iShaderIndex < m_iShadersNum)) {
		if(m_lstShaders[iShaderIndex] != NULL) {
			m_lstShaders[iShaderIndex]->UnApply();
		}
	}

}
void CShaderManager::DeleteAllShader() {
	if((m_iShadersNum >0) && (m_lstShaders.size() > 0)) {
		int i;
		for( i = 0; i < m_lstShaders.size(); i++ ) {
			if(m_lstShaders[i] != NULL) {
				delete m_lstShaders[i];
				m_lstShaders[i] = NULL;
			}
		}
		m_lstShaders.clear();
		m_iShadersNum = 0;
	}	
}
CShaderScene *CShaderManager::GetShaderPtr(char *strShader)  {

	if((strShader != NULL) && (strlen(strShader) > 1)) {
		int i;
		for( i = 0; i < m_lstShaders.size() ; i++ ) {
			if(m_lstShaders[i] != NULL) {
				if(strcmp(strShader,m_lstShaders[i]->GetShaderName()) == 0)
					return m_lstShaders[i];

			}
		}
		if(LoadShader(strShader))
			return m_lstShaders[(m_lstShaders.size() - 1)];
		else
			return NULL;
	}
	return NULL;


}

int CShaderManager::GetShader(char *strShader) {

	if((strShader != NULL) && (strlen(strShader) > 1)) {
		int i;
		for( i = 0; i < m_lstShaders.size() ; i++ ) {
			if(m_lstShaders[i] != NULL) {
				if(strcmp(strShader,m_lstShaders[i]->GetShaderName()) == 0)
					return i;

			}
		}
		if(LoadShader(strShader))
			return (m_lstShaders.size() - 1);
		else
			return -1;
	}
	return -1;

}

bool CShaderManager::LoadShader(char *strShader) {
	
	int iShaderId = atoi(strShader);
	if(iShaderId >= SHADER_ID_NUM)
		return false;

	VOID *pNewNode = NULL;
	
	switch(iShaderId) {
	
	case SHADER_ID_BUMPDIFFSPEC:

		pNewNode = new CShader_BumpSpec;		
		((CShader_BumpSpec *)pNewNode)->Create(strShader);
		m_lstShaders.push_back((CShader_BumpSpec *)pNewNode);		
		m_iShadersNum = m_lstShaders.size();
		break;
	
	case SHADER_ID_REFLECTION:
		MessageBox(NULL,"°³¹ßÁßÀÎ ½¦ÀÌ´õ ÀÔ´Ï´Ù.","error",MB_OK);
		return false;
		break;
	case SHADER_ID_DEPTHOFFIELD:
		MessageBox(NULL,"°³¹ßÁßÀÎ ½¦ÀÌ´õ ÀÔ´Ï´Ù.","error",MB_OK);
		return false;
		break;
	case SHADER_ID_GLARE:
		pNewNode = new CShader_Glare;		
		((CShader_Glare *)pNewNode)->Create(strShader);
		m_lstShaders.push_back((CShader_Glare *)pNewNode);		
		m_iShadersNum = m_lstShaders.size();
		//MessageBox(NULL,"°³¹ßÁßÀÎ ½¦ÀÌ´õ ÀÔ´Ï´Ù.","error",MB_OK);
		//return false;
		break;
	case SHADER_ID_SELFSHADOW:
		MessageBox(NULL,"°³¹ßÁßÀÎ ½¦ÀÌ´õ ÀÔ´Ï´Ù.","error",MB_OK);
		return false;
		break;
	case SHADER_ID_RAIN:
		pNewNode = new CShader_Rain;		
		((CShader_Rain *)pNewNode)->Create(strShader);
		m_lstShaders.push_back((CShader_Rain *)pNewNode);		
		m_iShadersNum = m_lstShaders.size();
		break;
	default:
		MessageBox(NULL,"°³¹ßÁßÀÎ ½¦ÀÌ´õ ÀÔ´Ï´Ù.","error",MB_OK);
		return false;
		break;

	};

	
	return true;	
}
void CShaderManager::Init() {
	if((m_iShadersNum >0) && (m_lstShaders.size() > 0)) {
		int i;
		for( i = 0; i < m_lstShaders.size(); i++ ) {
			if(m_lstShaders[i] != NULL) {
				delete m_lstShaders[i];
				m_lstShaders[i] = NULL;
			}
		}
		m_lstShaders.clear();
		m_iShadersNum = 0;
	}
	m_lstShaders.clear();
	m_iShadersNum = 0;

}