#include <sys/time.h>
#include <iostream>
#include "TaskMan.h"
#include "Task.h"
#include "String.h"
#include "config.h"

Task::Task() : current(0), state(TASK_ON_HOLD), stopped(false), suspended(false), wbta(0) {
    TaskMan::AddTask(this);
}

Task::~Task() {
    TaskMan::RemoveFromWatches(this);
}

int Task::Do() throw (GeneralException) {
    return TASK_ON_HOLD;
}

int Task::Run() {
    try {
	state = Do();
    }
    catch (TaskSwitch) {
	return state;
    }
    catch (GeneralException e) {
	std::cerr << _("Task ") << GetName() << _(" caused an unexpected exception: \"") << e.GetMsg() << _("\". Terminating.\n");
	state = TASK_DONE;
	return TASK_DONE;
    }
    
    return state;
}

int Task::DryRun() {
    while (state != TASK_DONE) {
	try {
	    state = Do();
	}
	catch (TaskSwitch) {
	}
	catch (GeneralException e) {
	    std::cerr << _("Task ") << GetName() << _(" caused an unexpected exception during dry-run: \"") << e.GetMsg() << _("\". Terminating.\n");
	    state = TASK_DONE;
	}
    }
    
    return state;
}

int Task::GetState() {
    return state;
}

String Task::GetName() {
    return _("Unknow Task");
}

void Task::Suspend(int newstate) throw (GeneralException) {
    if (newstate != -1) {
	state = newstate;
    }
    suspended = true;
    throw TaskSwitch();
}

void Task::WaitFor(Handle * h, int flags) {
    h->SetNonBlock();
    TaskMan::WaitFor(h, this, flags);
}

void Task::WaitFor(Task * t) {
    t->wbta = this;
}

void Task::WaitFor(pid_t p) {
    TaskMan::WaitFor(p, this);
}

void Task::WaitFor(timeval t, int flags) {
    TaskMan::WaitFor(t, this, flags);
}

void Task::SetBurst() {
    state = TASK_BURST;
}

void Task::Stop() {
    stopped = true;
}

void Task::Restart() {
    stopped = false;
}

bool Task::IsStopped() {
    return stopped;
}

Task * Task::WaitedBy() {
    return wbta;
}

void Task::RemoveFromWatches() {
    wbta = 0;
}