<?PHP

   // Database maintenance functions
   //
   // Version: $Revision: 1.4 $
   // Date: $Date: 2008/05/18 13:26:05 $
   //
   // Copyright (c) 2006 - 2008 Benjamin Oshrin
   // License restrictions apply, see LICENSE for details.

// We use adodb and axmls for database abstraction
include($topdir.'../adodb/adodb.inc.php');
include($topdir.'../adodb/adodb-xmlschema03.inc.php');

// Start a connection here, since we'll pretty much always use one

if($config['dbhome'] != "") {
  putenv($config['dbhome']);
}

$dbc = ADONewConnection($config['db']);

if(!$dbc->Connect($config['dbhost'],
                  $config['dbuser'],
                  $config['dbpass'],
                  $config['dbname']))
{
  echo $tx['db.err.connect'] .": " . $dbc->ErrorMsg() . "<P>";
  exit;
}

// Retrieve data as associative arrays
$ADODB_FETCH_MODE = ADODB_FETCH_ASSOC;

function db_create_tables()
{
  // Create the tables required by mrsbs.

  // Returns: true if fully successful, false otherwise.

  // We use AXMLS to turn an XML file into a db.

  global $dbc;
  global $topdir;
  
  $schema = new adoSchema($dbc);
  $sql = $schema->ParseSchema($topdir.'../lib/database-schema.xml');

  if($schema->ExecuteSchema() == 2)  // !!!
    return(true);
  else
    return(false);
}

function db_create_tables_print_sql()
{
  // Display the SQL needed to create the tables required by mrsbs.

  // Returns: true if fully successful, false otherwise.

  // We use AXMLS to turn an XML file into a set of SQL statements.

  global $dbc;
  global $topdir;
  
  $schema = new adoSchema($dbc);
  $sql = $schema->ParseSchema($topdir.'../lib/database-schema.xml');

  print $schema->PrintSQL('TEXT') . "\n";
}

function db_drop_tables()
{
  // Drop the tables required by mrsbs.

  // Returns: true if fully successful, false otherwise.

  // We use AXMLS to turn an XML file into a db.

  global $dbc;
  global $topdir;

  // Drop sequences separately
  $dbc->DropSequence('mrsbs_contactid_seq');
  $dbc->DropSequence('mrsbs_locationid_seq');
  $dbc->DropSequence('mrsbs_mtgid_seq');
  $dbc->DropSequence('mrsbs_windowid_seq');
  
  $schema = new adoSchema($dbc);
  $sql = $schema->RemoveSchema($topdir.'../lib/database-schema.xml');
  
  if($schema->ExecuteSchema() == 2)  // !!!
    return(true);
  else
    return(false);
}

function db_drop_tables_print_sql()
{
  // Display the SQL needed to drop the tables required by mrsbs.

  // Returns: true if fully successful, false otherwise.

  // We use AXMLS to turn an XML file into a set of SQL statements.

  global $dbc;
  global $topdir;
  
  print "-- WARNING: You must manually drop the following sequences:\n";
  print "--  mrsbs_contactid_seq, mrsbs_locationid_seq, mrsbs_mtgid_seq, mrsbs_windowid_seq\n\n";

  $schema = new adoSchema($dbc);
  $sql = $schema->RemoveSchema($topdir.'../lib/database-schema.xml');
  
  print $schema->PrintSQL('TEXT') . "\n";
}

function db_reset_tables($mode)
{
  // Drop data from the database.  If $mode is "all", all data is dropped.
  // If $mode is "meeting", only meeting related data is dropped.

  // Returns: true if fully successful, false otherwise.

  global $dbc;

  $dbc->StartTrans();

  if($mode == "all" || $mode == "meeting")
  {
    // Drop meeting related data

    $dbc->Execute("DELETE FROM mrsbs_meeting_info");
    $dbc->Execute("DELETE FROM mrsbs_history");
    $dbc->Execute("DELETE FROM mrsbs_invitees");
    $dbc->Execute("DELETE FROM mrsbs_potential_locations");
    $dbc->Execute("DELETE FROM mrsbs_reply_locations");
    $dbc->Execute("DELETE FROM mrsbs_reply_windows");
    $dbc->Execute("DELETE FROM mrsbs_windows");
    $dbc->Execute("DELETE FROM mrsbs_recent_invitees");
  }
  
  if($mode == "all")
  {
    // Drop other data

    $dbc->Execute("DELETE FROM mrsbs_acls");
    $dbc->Execute("DELETE FROM mrsbs_contacts");
    $dbc->Execute("DELETE FROM mrsbs_delegates");
    $dbc->Execute("DELETE FROM mrsbs_locations");
  }

  return($dbc->CompleteTrans());
}

?>