<?php

class User extends Model
{
  var $Dependencies = array('Log');
  var $Data = array();
  var $DefaultRole = 2;
  var $OnlineStateTimeout = 600; // in seconds
  var $AnonymousUserId = 1;

  var $Roles = array('Unknown', 'Anonymous', 'User', 'Administrator');

  function PasswordHash($Name, $Password)
  {
    return(sha1(strtoupper($Name.':'.$Password)));
  }

  function Check()
  {
    $SID = session_id();

    // Remove inactive users
    $DbResult = $this->Database->select('UserOnline', 'Id, User', 'ActivityTime < DATE_SUB(NOW(), INTERVAL '.$this->OnlineStateTimeout.' SECOND)');
    while($DbRow = $DbResult->fetch_array())
    {
      $this->System->Modules['User']->Data['Id'] = $DbRow['User'];
      if($DbRow['User'] != $this->AnonymousUserId) $this->System->Modules['Log']->NewRecord('User', 'Logout');
      $this->Database->delete('UserOnline', 'Id='.$DbRow['Id']);
    }

    // Lookup user record
    $Query = $this->Database->select('UserOnline', '*', 'SessionId="'.$SID.'"');
    if($Query->num_rows == 0)
      $this->Database->insert('UserOnline', array('SessionId' => $SID, 'User' => $this->AnonymousUserId, 'LoginTime' => 'NOW()', 'ActivityTime' => 'NOW()', 'IpAddress' => GetRemoteAddress(), 'HostName' => gethostbyaddr(GetRemoteAddress()), 'ScriptName' => $_SERVER['PHP_SELF']));
    //echo($this->Database->LastQuery);

    // Check login
    $Query = $this->Database->select('UserOnline', '*', 'SessionId="'.$SID.'"');
    $Row = $Query->fetch_assoc();
    if($Row['User'] != $this->AnonymousUserId)
    {
      $Query = $this->Database->select('User', '*', 'Id='.$Row['User']);
      $this->Data = $Query->fetch_assoc();
      $Result = $this->System->Translate('UserLogged');
    } else
    {
      $Query = $this->Database->select('User', '*', 'Id='.$this->AnonymousUserId);
      $this->Data = $Query->fetch_assoc();
      $Result = $this->System->Translate('UserNotLogged');
    }

    // Refresh time of last access
    $this->Database->update('UserOnline', 'SessionId="'.$SID.'"', array('ActivityTime' => 'NOW()'));

    //$this->LoadPermission($this->Data['Role']);

    // Role and permission
    //$this->LoadRoles();
  }

  function Register($Login, $Password, $Password2, $Email, $Name)
  {
    global $Options, $Config;

    if(($Email == '') || ($Login == '') || ($Password == '') || ($Password2 == '')  || ($Name == '')) $Result = $this->System->Translate('MissingData');
    else if($Password != $Password2) $Result = $this->System->Translate('PasswordsUnmatched');
    else
    {
      // Je uživatel registrován?
      $Query = $this->Database->select('User', '*', 'Login = "'.$Login.'"');
      if($Query->num_rows > 0) $Result = $this->System->Translate('LoginUsed');
      else
      {
        $Query = $this->Database->select('User', '*', 'Name = "'.$Name.'"');
        if($Query->num_rows > 0) $Result = $this->System->Translate('NameUsed');
        else
        {
          $Query = $this->Database->select('User', '*', 'Email = "'.$Email.'"');
          if($Query->num_rows > 0) $Result = $this->System->Translate('EmailUsed');
          else
          {
            $this->Database->insert('User', array('Name' => $Name, 'Login' => $Login, 'Password' => $this->PasswordHash($Login, $Password), 'Email' => $Email, 'RegistrationTime' => 'NOW()', 'Locked' => 1, 'Role' => 2));
            $UserId = $this->Database->insert_id;

            $Subject = FromUTF8('Registrace nového účtu', 'iso2');
            $Message = 'Provedli jste registraci nového účtu na serveru <a href="http://'.$Config['System']['Host'].$Config['System']['RootFolder'].'/">http://'.$Config['System']['Host'].$Config['System']['RootFolder']."/</a>.<br/>\nPokud jste tak neučinili, měli by jste tento email ignorovat.<br/><br/>\n\nVáš účet je: ".$Login."\n<br/>Pro dokončení registrace klikněte na tento odkaz: ".'<a href="http://'.$Config['System']['Host'].$Config['System']['RootFolder'].'/?Action=UserRegisterConfirm&User='.$UserId.'&H='.$this->PasswordHash($Login, $Password).'">http://'.$Config['System']['Host'].$Config['System']['RootFolder'].'/?Action=UserRegisterConfirm&User='.$UserId.'&H='.$this->PasswordHash($Login, $Password).'</a>.'."\n<br/> \n\n<br/><br/>Na tento email neodpovídejte.";
            $AdditionalHeaders = "To: ".$Name." <".$Email.">\n"."From: ".FromUTF8($Config['System']['Title'], 'iso2')." <noreplay@zdechov.net>\n"."MIME-Version: 1.0\n"."Content-type: text/html; charset=utf-8";
            mail($Email, $Subject, $Message, $AdditionalHeaders);
            $Result = $this->System->Translate('UserRegistrated');
            $this->System->Modules['Log']->NewRecord('User', 'NewRegistration', $Login);
          }
        }
      }
    }
    return($Result);
  }

  function RegisterConfirm($Id, $Hash)
  {
    $DbResult = $this->Database->select('User', 'Id, Login, Password', 'Id = '.$Id);
    if($DbResult->num_rows > 0)
    {
      $Row = $DbResult->fetch_array();
      if($Hash == $Row['Password'])
      {
        $this->Database->update('User', 'Id='.$Row['Id'], array('Locked' => 0));
        $Output = $this->System->Translate('UserRegistrationConfirmed');
        $this->System->Modules['Log']->NewRecord('User', 'RegisterConfirm', 'Login='.$Row['Login'].', Id='.$Row['Id']);
      } else $Output = $this->System->Translate('PasswordsUnmatched');
    } else $Output = $this->System->Translate('UserNotFound');
    return($Output);
  }

  function Login($Login, $Password)
  {
    $SID = session_id();
    $Query = $this->Database->select('User', '*', 'Login="'.$Login.'"');
    if($Query->num_rows > 0)
    {
      $Row = $Query->fetch_assoc();
      if($Row['Password'] != $this->PasswordHash($Login, $Password)) $Result = $this->System->Translate('BadPassword');
      else if($Row['Locked'] == 1) $Result = $this->System->Translate('AccountLocked');
      else
      {
        $this->Database->update('User', 'Id='.$Row['Id'], array('LastLoginTime' => 'NOW()', 'LastIpAddress' => GetRemoteAddress()));
        $this->Database->update('UserOnline', 'SessionId="'.$SID.'"', array('User' => $Row['Id']));
        // načtení stavu stromu
        $Result = $this->System->Translate('UserLoggedIn');
        $this->System->Modules['Log']->NewRecord('User', 'Login', 'Login='.$Login.',Host='.gethostbyaddr(GetRemoteAddress()));
      }
    } else $Result = $this->System->Translate('UserNotRegistred');
    $this->Check();
    return($Result);
  }

  function Logout()
  {
    $SID = session_id();
    $this->Database->update('UserOnline', 'SessionId="'.$SID.'"', array('User' => $this->AnonymousUserId));
    $this->System->Modules['Log']->NewRecord('User', 'Logout', $this->Data['Login']);
    $this->Check();
    return($this->System->Translate('UserLoggedOut'));
  }

  function LoadRoles()
  {
    $this->Roles = array();
    $DbResult = $this->Database->select('UserRole', '*');
    while($DbRow = $DbResult->fetch_array())
      $this->Roles[] = $DbRow;
  }

  function LoadPermission($Role)
  {
    $this->Data['Permission'] = array();
    $DbResult = $this->Database->query('SELECT `UserRolePermission`.*, `PermissionOperation`.`Description` FROM `UserRolePermission` JOIN `PermissionOperation` ON `PermissionOperation`.`Id` = `UserRolePermission`.`Operation` WHERE `UserRolePermission`.`Role` = '.$Role);
    if($DbResult->num_rows > 0)
    while($DbRow = $DbResult->fetch_array())
      $this->Data['Permission'][$DbRow['Operation']] = $DbRow;
  }

  function PermissionMatrix()
  {
    $Result = array();
    $DbResult = $this->Database->query('SELECT `UserRolePermission`.*, `PermissionOperation`.`Description`, `UserRole`.`Title` FROM `UserRolePermission` LEFT JOIN `PermissionOperation` ON `PermissionOperation`.`Id` = `UserRolePermission`.`Operation` LEFT JOIN `UserRole` ON `UserRole`.`Id` = `UserRolePermission`.`Role`');
    while($DbRow = $DbResult->fetch_array())
    {
      $Value = '';
      if($DbRow['Read']) $Value .= 'R';
      if($DbRow['Write']) $Value .= 'W';
      $Result[$DbRow['Description']][$DbRow['Title']] = $Value;
    }
    return($Result);
  }

  function CheckGroupPermission($GroupId, $OperationId)
  {
    // Check group-group relation
    $DbResult = $this->Database->select('PermissionGroupAssignment', '*', '`Group`="'.$GroupId.'" AND `Type`="Group"');
    while($DbRow = $DbResult->fetch_array())
    {
       if($this->CheckGroupPermission($DbRow['GroupOrOperation'], $OperationId) == true) return(true);
    }

    // Check group-operation relation
    $DbResult = $this->Database->select('PermissionGroupAssignment', '*', '`Group`="'.$GroupId.'" AND `GroupOrOperation`="'.$OperationId.'" AND `Type`="Operation"');
    if($DbResult->num_rows > 0) return(true);
    return(false);
  }

  function CheckPermission($Module, $Operation, $ItemType = '', $ItemIndex = 0)
  {
  $DbResult = $this->Database->select('PermissionOperation', 'Id', '`Module`="'.$Module.'" AND `Item`="'.$ItemType.'" AND `ItemId`='.$ItemIndex.' AND `Operation`="'.$Operation.'"');
    if($DbResult->num_rows > 0)
    {
      $DbRow = $DbResult->fetch_array();
      $OperationId = $DbRow['Id'];

      // Check user-operation relation
      $DbResult = $this->Database->select('PermissionUserAssignment', '*', '`User`="'.$this->Data['Id'].'" AND `GroupOrOperation`="'.$OperationId.'" AND `Type`="Operation"');
      if($DbResult->num_rows > 0) return(true);

      // Check user-group relation
      $DbResult = $this->Database->select('PermissionUserAssignment', 'GroupOrOperation', '`User`="'.$this->Data['Id'].'" AND `Type`="Group"');
      while($DbRow = $DbResult->fetch_array())
      {
         if($this->CheckGroupPermission($DbRow['GroupOrOperation'], $OperationId) == true) return(true);
      }
      return(false);
    } else return(false);
  }

  function PasswordRecoveryRequest($Login, $Email)
  {
    global $Config;

    $DbResult = $this->Database->select('User', 'Login, Name, Id, Email, Password', '`Login`="'.$Login.'" AND `Email`="'.$Email.'"');
    if($DbResult->num_rows > 0)
    {
      $Row = $DbResult->fetch_assoc();
      $NewPassword = substr(sha1(strtoupper($Row['Login'])), 0, 7);

      $Subject = 'Obnova hesla';
      $Message = 'Požádali jste o zaslání nového hesla na serveru <a href="http://'.$Config['System']['Host'].$Config['System']['RootFolder'].'">http://'.$Config['System']['Host'].$Config['System']['RootFolder']."</a>.<br />\nPokud jste tak neučinili, měli by jste tento email ignorovat.<br /><br />\n\nVaše nové heslo k účtu ".$Row['Login']." je: ".$NewPassword."\n<br/>Pro aktivaci tohoto hesla klikněte na ".'<a href="http://'.$Config['System']['Host'].$Config['System']['RootFolder'].'/?Action=PasswordRecoveryConfirm&User='.$Row['Id'].'&H='.$Row['Password'].'&P='.$NewPassword.'">tento odkaz</a>.'."\n<br /> Po přihlášení si prosím změňte heslo na nové.\n\n<br/><br/>Na tento email neodpovídejte.";
      $AdditionalHeaders = "To: ".$Row['Name']." <".$Row['Email'].">\n"."From: ".FromUTF8($Config['System']['Title'], 'iso2')." <noreplay@zdechov.net>\n"."MIME-Version: 1.0\n"."Content-type: text/html; charset=utf-8";
      mail($Row['Email'], $Subject, $Message, $AdditionalHeaders);
      $Output = $this->System->Translate('UserPasswordRecoverySuccess');
      $this->System->Modules['Log']->NewRecord('User', 'PasswordRecoveryRequest', 'Login='.$Login.',Email='.$Email);
    } else $Output = $this->System->Translate('UserPasswordRecoveryFail');
    return($Output);
  }

  function PasswordRecoveryConfirm($Id, $Hash, $NewPassword)
  {
    $DbResult = $this->Database->select('User', 'Id, Login, Password', 'Id = '.$Id);
    if($DbResult->num_rows > 0)
    {
      $Row = $DbResult->fetch_array();
      $NewPassword2 = substr(sha1(strtoupper($Row['Login'])), 0, 7);
      if(($NewPassword == $NewPassword2) and ($Hash == $Row['Password']))
      {
        $this->Database->update('User', 'Id='.$Row['Id'], array('Password' => sha1($NewPassword), 'Locked' => 0));
        $Output = $this->System->Translate('UserPasswordRecoveryConfirmed');
        $this->System->Modules['Log']->NewRecord('User', 'PasswordRecoveryConfirm', 'Login='.$Row['Login']);
      } else $Output = $this->System->Translate('UserPasswordUnmatched');
    } else $Output = $this->System->Translate('UserNotFound');
    return($Output);
  }

  function ServerCount()
  {
    $DbResult = $this->Database->query('SELECT COUNT(*) FROM Server WHERE User='.$this->Data['Id']);
    $DbRow = $DbResult->fetch_row();
    return($DbRow[0]);
  }

  function RealmCount()
  {
    $Total = 0;
    $DbResult = $this->Database->query('SELECT Id FROM Server WHERE User='.$this->User['Id']);
    while($DbRow = $DbResult->fetch_assoc())
    {
      $Server = new Server($this->Database, $DbRow['Id']);
      $Total += $Server->RealmCount();
    }
    return($Total);
  }
}
