// This file written completely by Tim Johnson (Tim@TimMUD)

static void send_mudlist_updates(string updating_mudname, int old_mudlist_id){
    string mudname; // mud name
    string *kys; // array of strings for keys that need to be sent
    mapping out=([ ]); // mapping to send
    int i; // counter
    trr("old_mudlist_id: "+old_mudlist_id,"blue");
    trr("updating_mudname: "+updating_mudname,"blue");
    trr("send_mudlist_updates, updating_mudname="+updating_mudname+", old_mudlist_id="+old_mudlist_id,"blue");
    foreach(mudname in keys(mudinfo_updates)){
#ifndef SEND_WHOLE_MUDLIST
	if(mudinfo_updates[mudname]>old_mudlist_id){ // needs updating
#endif
	    if(!mudinfo[mudname]){ // deleted mud;
		out[mudname] = 0;
	    }
	    else{
		switch(mudinfo[updating_mudname]["protocol"]){
		case 1:
		case 2:
		    out[mudname] = ({
		      connected_muds[mudname] ? -1 : 0,
		      // -1=up, 0=down, n=down for n secs
		      mudinfo[mudname]["ip"], // ip_addr
		      mudinfo[mudname]["player_port"], // player_port
		      mudinfo[mudname]["imud_tcp_port"], // imud_tcp_port
		      mudinfo[mudname]["imud_udp_port"], // imud_udp_port
		      mudinfo[mudname]["mudlib"], // mudlib
		      mudinfo[mudname]["base_mudlib"], // base_mudlib
		      mudinfo[mudname]["driver"], // driver
		      mudinfo[mudname]["mud_type"], // mud_type
		      mudinfo[mudname]["open_status"], // open_status
		      mudinfo[mudname]["services"], // services
		    });
		    break;
		case 3:
		    out[mudname] = ({
		      (connected_muds[mudname] ? -1 : 0),
		      // -1=up, 0=down, n=down for n secs
		      mudinfo[mudname]["ip"], // ip_addr
		      mudinfo[mudname]["player_port"], // player_port
		      mudinfo[mudname]["imud_tcp_port"], // imud_tcp_port
		      mudinfo[mudname]["imud_udp_port"], // imud_udp_port
		      mudinfo[mudname]["mudlib"], // mudlib
		      mudinfo[mudname]["base_mudlib"], // base_mudlib
		      mudinfo[mudname]["driver"], // driver
		      mudinfo[mudname]["mud_type"], // mud_type
		      mudinfo[mudname]["open_status"], // open_status
		      mudinfo[mudname]["admin_email"], // admin_email
		      mudinfo[mudname]["services"], // services
		      mudinfo[mudname]["other_data"], // other_data
		    });
		    break;
		} // switch
	    } // else not deleted
#ifndef SEND_WHOLE_MUDLIST
	} // if needs updating
#endif
    } // foreach
    // out now has the mapping of what to tell the mud about...
    // this might be big, so later I'll make it so it sends only 10 muds at a time...
    // take an idea from /cmds/std/_semote.c
    kys=keys(out);
    for(i=0;i<sizeof(kys)-10;i+=10){ // leave a group of size between 1 and 10 remaining
	trr("sending a set of 10...");
	// send all the ones except the last one, doing 10 at a time,
	// but give them their original mudlist id, in case they get
	// disconnected before all the sets of 10 get finished
	write_data(connected_muds[updating_mudname],({
	    "mudlist",
	    5,
	    router_name,
	    0,
	    updating_mudname,
	    0,
	    old_mudlist_id,
	    ([	kys[i]: out[kys[i]],
	      kys[i+1]: out[kys[i+1]],
	      kys[i+2]: out[kys[i+2]],
	      kys[i+3]: out[kys[i+3]],
	      kys[i+4]: out[kys[i+4]],
	      kys[i+5]: out[kys[i+5]],
	      kys[i+6]: out[kys[i+6]],
	      kys[i+7]: out[kys[i+7]],
	      kys[i+8]: out[kys[i+8]],
	      kys[i+9]: out[kys[i+9]],
	    ]),
	  }));
	map_delete(out,kys[i]);
	map_delete(out,kys[i+1]);
	map_delete(out,kys[i+2]);
	map_delete(out,kys[i+3]);
	map_delete(out,kys[i+4]);
	map_delete(out,kys[i+5]);
	map_delete(out,kys[i+6]);
	map_delete(out,kys[i+7]);
	map_delete(out,kys[i+8]);
	map_delete(out,kys[i+9]);
    }
    // incomplete set is left where it kicked out of the for loop
    write_data(connected_muds[updating_mudname],({
	"mudlist",
	5,
	router_name,
	0,
	updating_mudname,
	0,
	mudinfo_update_counter,
	out,
      }));
    mudinfo[updating_mudname]["old_mudlist_id"]=mudinfo_update_counter;
}