Modelbahn/server/interfaces.cc

#include <string>

#include "modelbahn.h"
#include "interface.h"
#include "interface-z21.h"
#include "interfaces.h"


// **************************************************************************
// *
// *		I N T E R F A C E S  (gateway to all devices)
// *
// **************************************************************************

Interfaces::Interfaces () {
	max = INTERFACES_MAX;
	pthread_mutex_init(&mtx, NULL);

	for (int i = 0; i < max; i++) interfaces[i] = NULL;
	changed = 0;
};

Interfaces::~Interfaces() {
	max = 0;
};


int Interfaces::LockThread() {
	if (pthread_mutex_lock(&mtx) == 0) return 1;
	else return 0;
}


int Interfaces::UnLockThread() {
	if (pthread_mutex_unlock(&mtx) == 0) return 1;
	else return 0;
}


JSONParse Interfaces::_GetJSON(int idx) {
	JSONParse json;
	JSONElement je;
	string s = "";

	json.Clear();

	if (interfaces[idx] != NULL) {
		s = interfaces[idx]->name; json.AddObject("name", s);
		s = interfaces[idx]->host; json.AddObject("host", s);
		json.AddObject("flags", interfaces[idx]->flags);
		json.AddObject("type", interfaces[idx]->type);
	}

	return json;
};


JSONParse Interfaces::GetJSON(string name) {
	int i;
	JSONParse jp;

	jp.Clear();

	LockThread();
	for (i = 0; i < max; i++) if (interfaces[i] != NULL){
		if (interfaces[i]->name[0] != 0) {
			if (name.compare(interfaces[i]->name) == 0) {
				jp = _GetJSON(i);
			}
		}
	}
	UnLockThread();

	return jp;
};


void Interfaces::GetJSONAll(JSONParse *json) {
	int i, cnt;
	JSONElement je;

	LockThread();

	//
	// write all railway data
	// create json object array manualy
	je.type = JSON_T_ARRAY;
	je.name = "interfaces";
	for (cnt = 0, i = 0; i < max; i++) if(interfaces[i] != NULL)
		if (interfaces[i]->name[0] != 0) {
			if (cnt != 0) je.value += ",";			// not first element
			je.value += _GetJSON(i).ToString();
			cnt++;
		}
	json->AddObject(je);

	UnLockThread();
};


Interface Interfaces::GetInterfaceFromJSON(JSONParse *j) {
	Interface i;
	string s;

	i.name[0] = 0;
	i.host[0] = 0;

	j->GetValue("name", &s);
	strncpy (i.name, s.c_str(), REFERENCENAME_LEN);
	j->GetValue("host", &s);
	strncpy (i.host, s.c_str(), REFERENCENAME_LEN);
	j->GetValueInt("flags", &i.flags);
	j->GetValueInt("type", &i.type);

	return i;
};


int Interfaces::Change(Interface *iface) {
	int i;
	int ifree = -1;

	printf ("Interface Type:%d\n", iface->type);

	LockThread();
	for (i = 0; i < max; i++) {
		if (interfaces[i] != NULL) {
			// found element
			if (strncmp(interfaces[i]->name, iface->name, REFERENCENAME_LEN) == 0) {
				delete interfaces[i];
				interfaces[i] = NULL;
				ifree = i;
				break;
			}
		}
		else if (ifree == -1) ifree = i;
	}

	// element found or we need to add the element.
	if (ifree != -1 && ifree < max) {
		if (iface->type == INTF_T_Z21)				interfaces[ifree] = new InterfaceZ21();
		else										interfaces[ifree] = new Interface();
		strncpy (interfaces[ifree]->name, iface->name, REFERENCENAME_LEN);
		strncpy (interfaces[ifree]->host, iface->host, REFERENCENAME_LEN);
		interfaces[ifree]->flags = iface->flags;
		interfaces[ifree]->type = iface->type;
		interfaces[ifree]->Connect();
	}
	changed = 1;
	UnLockThread();

	return 1;
};


int Interfaces::Delete(string name) {
	int i;

	LockThread();
	for (i = 0; i < max; i++) if (interfaces[i] != NULL) {
		if (name.compare(interfaces[i]->name) == 0) {
			interfaces[i]->Disconnect();
			interfaces[i]->name[0] = 0;
			interfaces[i]->host[0] = 0;
			interfaces[i]->flags = 0;
			interfaces[i]->type = INTF_T_OFF_UNKNOWN;
			delete interfaces[i];
			interfaces[i] = NULL;
			changed = 1;
			break;
		}
	}

	UnLockThread();

	return 1;
};


void Interfaces::PowerOnOff(int onoff) {
	int i;

	LockThread();

	for (i = 0; i < max; i++) if (interfaces[i] != NULL) {
		if (!interfaces[i]->IsConnected()) interfaces[i]->Connect();
		interfaces[i]->PowerOnOff(onoff);
	}

	UnLockThread();
};


//
// Turnouts
//
void Interfaces::SetTurnout(Turnout *t, int active, int motoractive) {
	int i;

	if (t == NULL) return;

	LockThread();
	debug (0, "%s:%d Interfaces::SetTurnout Name:%s active:%d Output%d", __FILE__, __LINE__, t->name, active, motoractive);

	//
	// if the interfacename is debug ... simulate a change in the turnout
	//
	if (strncmp(t->ifname, "DEBUG", REFERENCENAME_LEN) == 0) {
		if (active) 	t->flags |= TURNOUT_F_ACTIVE;
		else			t->flags &= ~TURNOUT_F_ACTIVE;

		server->TurnoutAddrMode(t->ifname, t->addr, active);
	}
	else {
		for (i = 0; i < max; i++) if (interfaces[i] != NULL) {
			if (!interfaces[i]->IsConnected()) interfaces[i]->Connect();
			if (strncmp(t->ifname, interfaces[i]->name, REFERENCENAME_LEN) == 0)
				interfaces[i]->SetTurnout(t, active, motoractive);
		}
	}

	UnLockThread();
};


//
// Locomotives
//
void Interfaces::SetLocoSpeed(Locomotive *l, int speed) {
	int i;
	int step = 0, maxstep = 0;

	debug (0, "Interfaces::SetLocoSpeed Loco:'%s' Speed:%d", l->name, speed);

	switch(l->stepcode) {
		case LOCO_INT_DCC14: maxstep = 14; break;
		case LOCO_INT_DCC28: maxstep = 28; break;
		case LOCO_INT_DCC128: maxstep = 126; break;
		default: maxstep = 0; break;
	}

	if (abs(speed) < l->vmin) step = 0;
	if (abs(speed) >= l->vmin) step = (speed * (maxstep)) / l->vmax;
	if (abs(speed) > l->vmax) step = maxstep;

	l->speed = speed;

	LockThread();

	for (i = 0; i < max; i++) if (interfaces[i] != NULL) {
		if (!interfaces[i]->IsConnected()) interfaces[i]->Connect();
		if (strncmp(l->ifname, interfaces[i]->name, REFERENCENAME_LEN) == 0)
			interfaces[i]->SetLocoSpeed(l, step);
	}

	UnLockThread();
};


void Interfaces::SetLocoFunction(Locomotive *l, int func, int value) {
	int i;

	debug (0, "Interfaces::SetLocoFunction Loco:'%s' Function:%d Value:%d", l->name, func, value);

	LockThread();

	for (i = 0; i < max; i++) if (interfaces[i] != NULL) {
		if (!interfaces[i]->IsConnected()) interfaces[i]->Connect();
		if (strncmp(l->ifname, interfaces[i]->name, REFERENCENAME_LEN) == 0)
			interfaces[i]->SetLocoFunction(l, func, value);
	}

	UnLockThread();
};



void Interfaces::Loop() {
	int i;
	JSONParse jout;

	for (i = 0; i < max; i++) if (interfaces[i] != NULL) {
		if (interfaces[i]->Loop()) {
			//
			// now we need to send an update
			jout.Clear();
			jout.AddObject ("interface", _GetJSON(i));
			if (network) network->ChangeListPushToAll(jout.ToString());
		}
	}
};