#include <lib.h>
#include <dirs.h>
#include <commands.h>

inherit LIB_DAEMON;
string globalstr1, globalstr2;
int globalint;

mixed cmd(string str) {
    string *sorted_array, *sub_arr, *new_arr, *bkarr;
    string line, s1, bkname, bkcontents;
    int number;

    if( !str ) return "You must specify a file to restore.";
    if(str && sscanf(str,"%s %d",s1, number) > 1) str = s1;
    else false();

    new_arr = ({});
    sub_arr = ({});

    bkname = homedir(this_player())+"/bak/bk.db";
    if( !str ) return "You must specify a file to restore.";
    if( !file_exists(bkname)) {
	write("The backup database file does not exist. Aborting.");
	return 1;
    }
    bkcontents = read_file(bkname);
    if(strsrch(bkcontents,str) == -1) {
	write("You haven't backed up a file by that name."); 
	return 1;
    }
    if(str == "workroom.orig") {
	unguarded( (: globalint = cp(homedir(this_player())+"/bak/workroom.orig",
	      homedir(this_player())+"/workroom.c") :) );
	if(globalint) {
	    write("Workroom file restored.");
	    load_object(CMD_UPDATE)->cmd("-a "+homedir(this_player())+"/workroom.c");
	}
	else write("Workroom could not be restored.");
	return 1;
    }
    bkarr = explode(bkcontents,"\n");
    foreach(string zline in bkarr){
	if(strsrch(zline,str) != -1) new_arr += ({ zline });
    }

    if(!number || number < 1) number = 1;
    sorted_array = sort_array(new_arr, -1);
    if(number > sizeof(sorted_array)) number = sizeof(sorted_array);
    line = sorted_array[(number - 1)];

    sub_arr = explode(line," : ");
    if(!file_exists(REALMS_DIRS + "/" + this_player()->GetKeyName()+"/bak/"+sub_arr[0])){
	write("That file has an entry in the backup database but can't be found in your backup directory.");
	return 1;
    }
    globalstr1 = REALMS_DIRS + "/" + this_player()->GetKeyName()+"/bak/"+sub_arr[0];
    globalstr2 = sub_arr[1];
    unguarded( (: cp(globalstr1, globalstr2) :) );
    write("File restored.");
    return 1;
}

int help() {
    message("help", "Syntax: <restore STRING> [NUMBER]\n\n"
      "Restores the specified file  from your bak/ directory. "
      "If you specify a number, the command will try to find "
      "the Nth newest file to restore. Examples:\n"
      "To restore the most recent version of file.c:\n"
      "restore file.c\n"
      "To restore the version you backed up before the most "
      "recent version:\n"
      "restore file.c 2\n"
      "And so on.\n"
      "See also: bk", 
      this_player());
}