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<?php
/* Copyright 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014 Arun Persaud <arun@nubati.net>
 *
 *   This file is part of e-DoKo.
 *
 *   e-DoKo is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation, either version 3 of the License, or
 *   (at your option) any later version.
 *
 *   e-DoKo is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with e-DoKo.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

/* make sure that we are not called from outside the scripts,
 * use a variable defined in config.php to check this
 */
if(!isset($HOST))
  exit;

/* user needs to be logged in to do this */
if(! isset($_SESSION["name"]) )
  {
    echo '<div class="message">'._('Please')." <a href=\"$INDEX\">"._('log in')."</a>.</div>\n";
  }
else
  {
    $name  = $_SESSION["name"];
    $email = DB_get_email('name',$name);

    $myid = DB_get_userid('email',$email);
    if(!$myid)
      return;

    DB_update_user_timestamp($myid);

    if( !myisset("PlayerA", "PlayerB","PlayerC","PlayerD","dullen","schweinchen","callrule","lowtrump" ))
      {
        display_user_menu($myid);
	/* only get players that want to be in new games */
	$names = DB_get_all_user_names_open_for_games();

	/* add player if he is not open for games */
	if(!in_array($_SESSION["name"],$names))
	  $names[]=$_SESSION["name"];

	/* add some randomness */
	shuffle($names);

	echo "<div class=\"user\">\n";
	output_form_for_new_game($names);
	echo "</div>\n";

      }
    else
      {
	/* get my name */
	$name = $_SESSION["name"];

	/* the names of the four players */
	$PlayerA = $_REQUEST["PlayerA"];
	$PlayerB = $_REQUEST["PlayerB"];
	$PlayerC = $_REQUEST["PlayerC"];
	$PlayerD = $_REQUEST["PlayerD"];

	/* the person who sets up the game has to be one of the players */
	if(!in_array($name,array($PlayerA,$PlayerB,$PlayerC,$PlayerD)))
	  {
	    echo '<div class="message">'."You need to be one of the players to start a <a href=\"$INDEX?action=new\">new game</a>.</div>\n";
	    return;
	  }

	/* what rules were selected */
	$dullen      = $_REQUEST["dullen"];
	$schweinchen = $_REQUEST["schweinchen"];
	$call        = $_REQUEST["callrule"];
	$lowtrump    = $_REQUEST["lowtrump"];

	/* get the emails addresses of the players */
	$EmailA  = DB_get_email('name',$PlayerA);
	$EmailB  = DB_get_email('name',$PlayerB);
	$EmailC  = DB_get_email('name',$PlayerC);
	$EmailD  = DB_get_email('name',$PlayerD);

	/* this is used to check if the player names are all ok */
	if($EmailA=="" || $EmailB=="" || $EmailC=="" || $EmailD=="")
	  {
	    echo _("couldn't find one of the names, please start a new game");
	    return;
	  }

	/* get user ids */
	$useridA  = DB_get_userid('name',$PlayerA);
	$useridB  = DB_get_userid('name',$PlayerB);
	$useridC  = DB_get_userid('name',$PlayerC);
	$useridD  = DB_get_userid('name',$PlayerD);

	/* create random numbers */
	$randomNR       = create_array_of_random_numbers($useridA,$useridB,$useridC,$useridD);
	$randomNRstring = join(":",$randomNR);

	/* create game */
	$followup = NULL;
	/* is this game a follow up in an already started session? */
	if(myisset("followup") )
	  {
	    $followup= $_REQUEST["followup"];
	    $session = DB_get_session_by_gameid($followup);
	    $ruleset = DB_get_ruleset_by_gameid($followup); /* just copy ruleset from old game,
							     this way no manipulation is possible */

	    /* check if there is a game in pre or play mode, in that case do nothing */
	    if( DB_is_session_active($session) > 0 )
	      {
		echo "<p class=\"message\"> There is already a game going on in session $session, you can't start a new one</p>";
		return;
	      }
	    else if ( DB_is_session_active($session) < 0 )
	      {
		echo "<p class=\"message\"> ERROR: status of session $session couldn't be determined.</p>";
		return;
	      }

	    if($session)
	      DB_query("INSERT INTO Game VALUES (CURRENT_TIMESTAMP, CURRENT_TIMESTAMP, '$randomNRstring', 'normal', NULL,NULL,'1',NULL,'pre',".
		       "'$ruleset','$session' ,NULL)");
	    else
	      {
		/* get max session and start a new one */
		$max = DB_get_max_session();
		$max++;
		DB_query("UPDATE Game SET session='".$max."' WHERE id=".DB_quote_smart($followup));
		DB_query("INSERT INTO Game VALUES (CURRENT_TIMESTAMP, CURRENT_TIMESTAMP, '$randomNRstring', 'normal', NULL,NULL,'1',NULL,'pre',".
			    "'$ruleset','$max' ,NULL)");
	      }
	  }
	else /* no follow up, start a new session */
	  {
	    /* get ruleset information or create new one */
	    $ruleset = DB_get_ruleset($dullen,$schweinchen,$call,$lowtrump);
	    if($ruleset <0)
	      {
		myerror("Error defining ruleset: $ruleset");
		return;
	      };
	    /* get max session */
	    $max = DB_get_max_session();
	    $max++;

	    DB_query("INSERT INTO Game VALUES (CURRENT_TIMESTAMP, CURRENT_TIMESTAMP, '$randomNRstring', 'normal', NULL,NULL,'1',NULL,'pre', ".
		     "'$ruleset','$max' ,NULL)");
	  }
	$gameid = DB_insert_id();

	/* create hash */
	$TIME  = (string) time(); /* to avoid collisions */
	$hashA = md5("AGameOfDoko".$gameid.$PlayerA.$EmailA.$TIME);
	$hashB = md5("AGameOfDoko".$gameid.$PlayerB.$EmailB.$TIME);
	$hashC = md5("AGameOfDoko".$gameid.$PlayerC.$EmailC.$TIME);
	$hashD = md5("AGameOfDoko".$gameid.$PlayerD.$EmailD.$TIME);

	/* create hands */
	DB_query("INSERT INTO Hand VALUES (NULL,".DB_quote_smart($gameid).",".DB_quote_smart($useridA).
		 ", ".DB_quote_smart($hashA).", 'start','1',NULL,NULL,NULL,NULL)");
	$hand_idA = DB_insert_id();
	DB_query("INSERT INTO Hand VALUES (NULL,".DB_quote_smart($gameid).",".DB_quote_smart($useridB).
		 ", ".DB_quote_smart($hashB).", 'start','2',NULL,NULL,NULL,NULL)");
	$hand_idB = DB_insert_id();
	DB_query("INSERT INTO Hand VALUES (NULL,".DB_quote_smart($gameid).",".DB_quote_smart($useridC).
		 ", ".DB_quote_smart($hashC).", 'start','3',NULL,NULL,NULL,NULL)");
	$hand_idC = DB_insert_id();
	DB_query("INSERT INTO Hand VALUES (NULL,".DB_quote_smart($gameid).",".DB_quote_smart($useridD).
		 ", ".DB_quote_smart($hashD).", 'start','4',NULL,NULL,NULL,NULL)");
	$hand_idD = DB_insert_id();

	/* save cards */
	for($i=0;$i<12;$i++)
	  DB_query("INSERT INTO Hand_Card VALUES (NULL, '$hand_idA', '".$randomNR[$i]."', 'false')");
	for($i=12;$i<24;$i++)
	  DB_query("INSERT INTO Hand_Card VALUES (NULL, '$hand_idB', '".$randomNR[$i]."', 'false')");
	for($i=24;$i<36;$i++)
	  DB_query("INSERT INTO Hand_Card VALUES (NULL, '$hand_idC', '".$randomNR[$i]."', 'false')");
	for($i=36;$i<48;$i++)
	  DB_query("INSERT INTO Hand_Card VALUES (NULL, '$hand_idD', '".$randomNR[$i]."', 'false')");

	/* send out email, TODO: check for error with email */

	$users =  array( $useridA => $hashA, $useridB => $hashB, $useridC => $hashC, $useridD => $hashD );
	foreach ( $users as $uid => $hash )
	  {
	     set_language($uid,'uid');
	     $message = _('You are invited to play a game of DoKo.')."\n".
	       _('Please, place comments and bug reports here:')."\n$WIKI\n\n".
	       _('The whole round would consist of the following players:')."\n".
	       "$PlayerA\n".
	       "$PlayerB\n".
	       "$PlayerC\n".
	       "$PlayerD\n\n".
	       _('If you want to join this game, please follow this link:')."\n".
	       "".$HOST.$INDEX."?action=game&me=";

	     mymail($uid, $gameid, GAME_NEW, $message.$hash."\n\n");
	  };
        set_language($myid,'uid');

	echo '<div class="message">'._('You started a new game. The emails have been sent out!')."</div>\n";
        display_user_menu($myid);
      }
  }

?>