/*!
 * \file mg_item.c
 * \brief A general interface to data items, currently only GiantDisc
 *
 * \version $Revision: 1.0 $
 * \date    $Date: 2004-12-07 10:10:35 +0200 (Tue, 07 Dec 2004) $
 * \author  Wolfgang Rohdewald
 * \author  Responsible author: $Author: wr $
 *
 */

#include <unistd.h>
#include <fcntl.h>
#include <errno.h>

#include "mg_item.h"
#include "mg_tools.h"
#include "mg_setup.h"

bool
mgItem::Valid(bool Silent) const
{
    if (!m_validated)
    {
	    getSourceFile(true,Silent);	// sets m_valid as a side effect
	    m_validated=true;
    }
    return m_valid;
}

bool
mgItem::readable(string filename) const
{
	errno=0;
	string fullname;
	fullname = the_setup.ToplevelDir + filename;
	int fd = open(fullname.c_str(),O_RDONLY);
	if (fd<0)
		return false;
	char buf[20];
	errno=0;
	int i=read(fd,buf,10);
	int err = errno;
	close(fd);
	if (i!=10)
	{
		errno = 123456;
		return false;
	}
	else
		errno = err;
	close(fd);
	errno = 0;
	return true;
}

void
mgItem::analyze_failure(string filename) const
{
	readable(filename); 	// sets errno
	int err = errno;
	int nsize = filename.size();
	char *p;
	if (err==123456)
		p="File too short";
	else
		p = strerror(err);
    	extern void showmessage(int duration,const char*,...);
	if (nsize<20)
		showmessage(0,"%s not readable, errno=%d",filename.c_str(),err);
	else
		showmessage(0,"%s..%s not readable, errno=%d",
				filename.substr(0,15).c_str(),filename.substr(nsize-15).c_str(),err);
	mgWarning ("cannot read %s: %s", filename.c_str (),p);
}

mgItem::mgItem()
{
    m_valid = false;
    m_validated = false;
    m_itemid = -1;
    m_year = 0;
    m_rating = 0;
    m_duration = 0;
}

mgItem*
mgItem::Clone ()
{
    if (!this)
	    return 0;
    mgItem* result = new mgItem();
    result->InitFrom(this);
    return result;
}

void
mgItem::InitFrom(const mgItem* c)
{
    m_sel = c->m_sel;
    m_valid = c->m_valid;
    m_validated = c->m_validated;
    m_itemid = c->m_itemid;
    m_title = c->m_title;
    m_realfile = c->m_realfile;
    m_genre_id = c->m_genre_id;
    m_genre = c->m_genre;
    m_language = c->m_language;
    m_language_id = c->m_language_id;
    m_year = c->m_year;
    m_rating = c->m_rating;
    m_duration = c->m_duration;
}