#include "stdafx.h"
#include "SpBase.h"
#include "SpMisc.h"
#include "SpModule.h"
#include "SpEntity.h"
#include "SpTransactionContext.h"

#include "sp_ses.h"
#include <winpr/sysinfo.h>

SpTransactionContext::SpTransactionContext(sp_ses_uas_t *uas, int info, int method_id, int method_sig, int timeout, iobuffer_t **p_pkt, int tsx_id)
: m_pkt(NULL), m_tsx(NULL)
{
	int rc;
	sp_tsx_uas_callback cb;

	cb.on_destroy = NULL;
	cb.user_data = this;
	rc = sp_tsx_uas_create(uas, tsx_id, &cb, &m_tsx);
	if (rc == 0) {
		m_info = info;
		m_method_id = method_id;
		m_method_sig = method_sig;
		m_timeout = timeout;
		m_expire_time = timeout < 0 ? -1 : ((int)GetTickCount() + timeout);
		if (p_pkt) {
			m_pkt = *p_pkt;
			*p_pkt = NULL;
		}
	}
}

SpTransactionContext::~SpTransactionContext()
{
	if (m_pkt)
		iobuffer_dec_ref(m_pkt);
	if (m_tsx) {
		sp_tsx_uas_close(m_tsx);
		sp_tsx_uas_destroy(m_tsx);
	}
}

bool SpTransactionContext::IsOneWayCall()
{
	return !!m_info;
}

DWORD SpTransactionContext::GetRequestID()
{
	if (m_tsx) {
		return (DWORD)sp_tsx_uas_get_id(m_tsx);
	} else {
		return -1;
	}
}

ErrorCodeEnum SpTransactionContext::GetReceiveBuffer(DWORD &dwMessageID, DWORD &dwMessageSignature, CAutoBuffer &Buffer)
{
	if (m_pkt) {
		dwMessageID = (DWORD)m_method_id;
		dwMessageSignature = (DWORD)m_method_sig;
		int size = iobuffer_get_length(m_pkt);
		Buffer.Init(size);
		if (size > 0) {
			memcpy(&Buffer[0], iobuffer_data(m_pkt, 0), size);
		}
		return Error_Succeed;
	} else {
		return Error_Unexpect;
	}
}

ErrorCodeEnum SpTransactionContext::SendAnswer(CAutoBuffer Buffer, bool bEnd)
{
	if (m_info) {
		return Error_Bug;
	} 
	else 
	{
		iobuffer_t *ans_pkt = iobuffer_create(-1, -1);
		int rc;
		int v;
		v = (int)Error_Succeed;
		iobuffer_write(ans_pkt, IOBUF_T_I4, &v, 0);		// sys error
		v = 0;
		iobuffer_write(ans_pkt, IOBUF_T_I4, &v, 0);		// user error
		CSimpleString str = "";
		
		v = Buffer.GetCount();
		if (v > 0)
			iobuffer_write(ans_pkt, IOBUF_T_BUF, &Buffer[0], v);

		rc = sp_tsx_uas_answer(m_tsx, !!bEnd, &ans_pkt);
		if (ans_pkt)
			iobuffer_dec_ref(ans_pkt);
		return SpTranslateError(rc);
	}
}

ErrorCodeEnum SpTransactionContext::SendAnswer(ErrorCodeEnum eSysError, DWORD dwUserError, CSimpleString str)
{
	if (m_info) {
		return Error_Bug;
	}
	else {
		iobuffer_t *ans_pkt = iobuffer_create(-1, -1);
		int rc;
		int v;
		v = (int)eSysError;
		iobuffer_write(ans_pkt, IOBUF_T_I4, &v, 0);			// sys error
		iobuffer_write(ans_pkt, IOBUF_T_I4, &dwUserError, 0);	// user error
		iobuffer_write(ans_pkt, IOBUF_T_STR, str.GetData(), str.GetLength());

		rc = sp_tsx_uas_answer(m_tsx, 1, &ans_pkt);
		if (ans_pkt)
			iobuffer_dec_ref(ans_pkt);
		return SpTranslateError(rc);
	}
}


DWORD SpTransactionContext::GetExpireLeftTime()
{
	if (m_tsx) { // because the machine will restart every day, so use int for time ticks storage is ok!
		if (m_expire_time == -1) {
			return m_expire_time;
		} else {
			int now = (int)GetTickCount();
			return m_expire_time > now ? (m_expire_time - now) : 0;
		}
	} else {
		return -1;
	}	
}

ErrorCodeEnum SpTransactionContext::GetLinkContext(linkContext& curLink)
{
	if (m_pkt) {

		char bussinessId[LINKINFO_BUSSID_LEN + 1];
		char traceId[LINKINFO_TRACEID_LEN + 1];
		char spanId[LINKINFO_SPANID_LEN + 1];
		char parentSpanId[LINKINFO_PARENTSPANID_LEN + 1];
		ZeroMemory(bussinessId, sizeof(bussinessId));
		ZeroMemory(traceId, sizeof(traceId));
		ZeroMemory(spanId, sizeof(spanId));
		ZeroMemory(parentSpanId, sizeof(parentSpanId));

		iobuffer_get_linkInfo(m_pkt, bussinessId, traceId, spanId, parentSpanId);
		curLink.bussinessId = bussinessId;
		curLink.traceId = traceId;
		curLink.spanId = spanId;
		curLink.parentSpanId = parentSpanId;
	}
	return Error_Succeed;
}

ErrorCodeEnum SpTransactionContext::GetExpireTime(DWORD &dwWholeTime,DWORD &dwLeftTime)
{
	if (m_tsx) {
		if (m_expire_time == -1) {
			dwWholeTime = dwLeftTime = 0xffffffff;
		} else {
			int now = (int)GetTickCount();
			dwWholeTime = m_timeout;
			dwLeftTime = m_expire_time > now ? (m_expire_time - now) : 0;
		}
		return Error_Succeed;
	} else {
		return Error_Unexpect;
	}
}

ErrorCodeEnum SpTransactionContext::SetExpireTime( DWORD dwMS )
{
	return Error_NotImpl;
}

//
// SpMUITransactionContext
//

ErrorCodeEnum SpMUITransactionContext::SendAnswer( ErrorCodeEnum eErrorCode, DWORD dwUserError, CSimpleString str)
{
	if (m_op == OP_START) {
		m_pEntity->FinishStart(eErrorCode);
	} else if (m_op == OP_PAUSE) {
		m_pEntity->FinishPause(eErrorCode);
	} else if (m_op == OP_SELFTEST) {
		m_pEntity->FinishSelfTest(eErrorCode, dwUserError);
	} else if (m_op == OP_CONTINUE) {
		m_pEntity->FinishContinue(eErrorCode);
	} else if (m_op == OP_CLOSE) {
		m_pEntity->FinishClose(eErrorCode);
	}
	//TODO: always return Error_Unexpect ??
	return Error_Unexpect;
}