#include "stdafx.h"
#include "SigmaView.h"
#include "SigmaProjectionParameter.h"
#include "ProjectionParameterAssistant.h"
#include "ActionProjectionItem.h"

extern "C" __declspec(dllexport)
int Projection_GetParameter(CSigmaView* pView, SigmaProjectionParameter * parameter)
{
	if (pView == 0 || parameter == 0)
		return -1;

	if (pView->m_pDoc == 0)
		return -1;

	CString projStr = pView->m_pDoc->GetDraw()->GetProjection();
	ProjectionParameterAssistant * assistant = ProjectionParameterAssistant::GetInstance();
	
	assistant->SetParameter(parameter);
	if (assistant->ParseParameterFromString(projStr) == 0)
		return -1;

	return 1;
}

extern "C" __declspec(dllexport)
int Projection_GetDefaultParameter(CSigmaView* pView, SigmaProjectionParameter * parameter)
{
	if (pView == 0 || parameter == 0)
		return -1;

	if (pView->m_pDoc == 0)
		return -1;

	CString projStr = pView->m_pDoc->GetDraw()->GetProjection();
	ProjectionParameterAssistant * assistant = ProjectionParameterAssistant::GetInstance();

	assistant->SetParameter(parameter);
	assistant->InitParameter();

	return 1;
}

extern "C" __declspec(dllexport)
int Projection_SetParameter(CSigmaView* pView, SigmaProjectionParameter parameter)
{
	if (pView == 0)
		return -1;

	if (pView->m_pDoc == 0)
		return -1;

	//TODO:检查要设置的参数和现有参数是否相同 相同的画 直接返回
	ProjectionParameterAssistant * assistant = ProjectionParameterAssistant::GetInstance();
	assistant->SetParameter(&parameter);

	std::string projectStr;
	int ret = assistant->GetProjectStr(projectStr);
	if (ret == -1) {
		return -1;
	}

	CString oldProjection = pView->m_pDoc->GetDraw()->GetProjection();
	CString newProjection = projectStr.c_str();

	pView->m_pDoc->GetDraw()->SetProjection(newProjection);

	pView->m_pDoc->SetActionItem(new CActionProjectionItem(pView->m_pDoc, 0, oldProjection, newProjection));

	return 1;
}

extern "C" __declspec(dllexport)
int Projection_Change(CSigmaView* pView, SigmaProjectionParameter * parameter)
{
	if (pView == 0 || parameter == 0)
		return -1;

	if (pView->m_pDoc == 0)
		return -1;

	ProjectionParameterAssistant * assistant = ProjectionParameterAssistant::GetInstance();
	assistant->SetParameter(parameter);

	std::string projectStr;
	int ret = assistant->GetProjectStr(projectStr);
	if (ret == -1)
		return -1;

	CString oldProjection = pView->m_pDoc->GetDraw()->GetProjection();
	CString newProjection = projectStr.c_str();

	pView->m_pDoc->GetDraw()->ChangeToProjection(newProjection);

	pView->m_pDoc->SetActionItem(new CActionProjectionItem(pView->m_pDoc, 0, oldProjection, newProjection));

	return 1;
}

extern "C" __declspec(dllexport)
//约定other字节数组的长度为512
int Projection_GetOtherStr(CSigmaView* pView, SigmaProjectionParameter * parameter, BYTE* other)
{
	if (pView == 0 || parameter == 0)
		return -1;

	if (pView->m_pDoc == 0)
		return -1;

	ProjectionParameterAssistant * assistant = ProjectionParameterAssistant::GetInstance();
	assistant->SetParameter(parameter);

	std::string otherStr;
	if (assistant->GenerateOtherString(otherStr) == false)
	{
		other[0] = '\0';
		return -1;
	}

	size_t count = otherStr.size();
	if (count >= 512)
		count = 511;
	memcpy(other, otherStr.data(), count);
	other[count] = '\0';

	return 1;
}

extern "C" __declspec(dllexport)
//约定other字节数组的长度为512
int Projection_GetProjectString(CSigmaView* pView, SigmaProjectionParameter * parameter, BYTE* projByts)
{
	if (pView == 0 || parameter == 0)
		return -1;

	if (pView->m_pDoc == 0)
		return -1;

	ProjectionParameterAssistant * assistant = ProjectionParameterAssistant::GetInstance();
	assistant->SetParameter(parameter);

	std::string projStr;
	if (assistant->GetProjectStr(projStr) == false)
	{
		projByts[0] = '\0';
		return -1;
	}

	size_t count = projStr.size();
	if (count >= 512)
		count = 511;
	memcpy(projByts, projStr.data(), count);
	projByts[count] = '\0';

	return 1;
}

extern "C" __declspec(dllexport)
int Projection_FillOtherParameter(CSigmaView* pView, SigmaProjectionParameter * parameter, LPCTSTR otherStr)
{
	if (pView == 0 || parameter == 0)
		return -1;

	if (pView->m_pDoc == 0)
		return -1;

	std::string str(otherStr);
	ProjectionParameterAssistant * assistant = ProjectionParameterAssistant::GetInstance();
	assistant->SetParameter(parameter);
	if (assistant->FillOtherParameter(str))
		return 1;

	return -1;
}

extern "C" __declspec(dllexport)
int Projection_IsEmpty(CSigmaView* pView)
{
	if (pView == NULL)
	{
		return 1; //投影参数为空
	}

	bool bEmpty = pView->m_pDoc->GetDraw()->GetProjection().IsEmpty();

	return bEmpty ? 1 : 0;
}