Merge branch 'test' of ../kivitendo-erp_20220811
[kivitendo-erp.git] / SL / Controller / Admin.pm
index 04d9c75..c22fdca 100644 (file)
@@ -4,28 +4,40 @@ use strict;
 
 use parent qw(SL::Controller::Base);
 
-use IO::File;
+use IO::Dir;
+use List::Util qw(first);
+use List::UtilsBy qw(sort_by);
 
+use SL::Common ();
 use SL::DB::AuthUser;
 use SL::DB::AuthGroup;
+use SL::DB::Printer;
+use SL::DBUtils ();
 use SL::Helper::Flash;
 use SL::Locale::String qw(t8);
+use SL::System::InstallationLock;
+use SL::User;
+use SL::Version;
+use SL::Layout::AdminLogin;
 
 use Rose::Object::MakeMethods::Generic
 (
-  'scalar --get_set_init' => [ qw(client user nologin_file_name db_cfg) ],
+  'scalar --get_set_init' => [ qw(client user group printer db_cfg is_locked
+                                  all_dateformats all_numberformats all_countrycodes all_stylesheets all_menustyles all_clients all_groups all_users all_rights all_printers
+                                  all_dbsources all_used_dbsources all_accounting_methods all_inventory_systems all_profit_determinations all_charts) ],
 );
 
 __PACKAGE__->run_before(\&setup_layout);
+__PACKAGE__->run_before(\&setup_client, only => [ qw(list_printers new_printer edit_printer save_printer delete_printer) ]);
 
 sub get_auth_level { "admin" };
-sub keep_auth_vars {
+sub keep_auth_vars_in_form {
   my ($class, %params) = @_;
   return $params{action} eq 'login';
 }
 
 #
-# actions
+# actions: login, logout
 #
 
 sub action_login {
@@ -35,7 +47,8 @@ sub action_login {
   return                   if !$self->authenticate_root;
   return                   if !$self->check_auth_db_and_tables;
   return                   if  $self->apply_dbupgrade_scripts;
-  $self->redirect_to(action => 'list_clients_and_users');
+
+  $self->redirect_to(action => 'show');
 }
 
 sub action_logout {
@@ -44,11 +57,15 @@ sub action_logout {
   $self->redirect_to(action => 'login');
 }
 
+#
+# actions: creating the authentication database & tables, applying database ugprades
+#
+
 sub action_apply_dbupgrade_scripts {
   my ($self) = @_;
 
   return if $self->apply_dbupgrade_scripts;
-  $self->action_list_clients_and_users;
+  $self->redirect_to(action => 'show');
 }
 
 sub action_create_auth_db {
@@ -67,61 +84,478 @@ sub action_create_auth_tables {
   $::auth->set_session_value('admin_password', $::lx_office_conf{authentication}->{admin_password});
   $::auth->create_or_refresh_session;
 
-  my $group = (SL::DB::Manager::AuthGroup->get_all(limit => 1))[0];
-  if (!$group) {
+  my $scripts_applied = $self->apply_dbupgrade_scripts;
+
+  if (! SL::DB::Manager::AuthGroup->get_all_count) {
     SL::DB::AuthGroup->new(
       name        => t8('Full Access'),
       description => t8('Full access to all functions'),
-      rights      => [ map { SL::DB::AuthGroupRight->new(right => $_, granted => 1) } SL::Auth::all_rights() ],
+      rights      => [ map { SL::DB::AuthGroupRight->new(right => $_, granted => 1) } $::auth->all_rights ],
     )->save;
   }
 
-  if (!$self->apply_dbupgrade_scripts) {
-    $self->action_login;
+  $self->action_login unless $scripts_applied;
+}
+
+#
+# actions: users
+#
+
+sub action_show {
+  my ($self) = @_;
+
+  $self->render(
+    "admin/show",
+    title => "kivitendo " . t8('Administration'),
+  );
+}
+
+sub action_new_user {
+  my ($self) = @_;
+
+  my $defaults = SL::DefaultManager->new($::lx_office_conf{system}->{default_manager});
+  $self->user(SL::DB::AuthUser->new(
+    config_values => {
+      countrycode  => $defaults->language('de'),
+      numberformat => $defaults->numberformat('1.000,00'),
+      dateformat   => $defaults->dateformat('dd.mm.yy'),
+      stylesheet   => "kivitendo.css",
+      menustyle    => "neu",
+    },
+  ));
+
+  $self->edit_user_form(title => t8('Create a new user'));
+}
+
+sub action_edit_user {
+  my ($self) = @_;
+  $self->edit_user_form(title => t8('Edit User'));
+}
+
+sub action_save_user {
+  my ($self) = @_;
+  my $params = delete($::form->{user})          || { };
+  my $props  = delete($params->{config_values}) || { };
+  my $is_new = !$params->{id};
+
+  # Assign empty arrays if the browser doesn't send those controls.
+  $params->{clients} ||= [];
+  $params->{groups}  ||= [];
+
+  $self->user($is_new ? SL::DB::AuthUser->new : SL::DB::AuthUser->new(id => $params->{id})->load)
+    ->assign_attributes(%{ $params })
+    ->config_values({ %{ $self->user->config_values }, %{ $props } });
+
+  my @errors = $self->user->validate;
+
+  if (@errors) {
+    flash('error', @errors);
+    $self->edit_user_form(title => $is_new ? t8('Create a new user') : t8('Edit User'));
+    return;
+  }
+
+  $self->user->save;
+
+  if ($::auth->can_change_password && $::form->{new_password}) {
+    $::auth->change_password($self->user->login, $::form->{new_password});
+  }
+
+  flash_later('info', $is_new ? t8('The user has been created.') : t8('The user has been saved.'));
+  $self->redirect_to(action => 'show');
+}
+
+sub action_delete_user {
+  my ($self) = @_;
+
+  my @clients = @{ $self->user->clients || [] };
+
+  # backup user metadata (email, name, etc)
+  my $user_config_values_ref = $self->user->config_values();
+  my $login =$self->user->login;
+
+  if (!$self->user->delete) {
+    flash('error', t8('The user could not be deleted.'));
+    $self->edit_user_form(title => t8('Edit User'));
+    return;
+  }
+
+  # Flag corresponding entries in 'employee' as deleted.
+  # and restore the most important user data in employee
+  # TODO try and catch the whole transaction {user->delete; update employee} {exception}
+  foreach my $client (@clients) {
+    my $dbh = $client->dbconnect(AutoCommit => 1) || next;
+    $dbh->do(qq|UPDATE employee SET deleted = TRUE, name = ?, deleted_email = ?,
+                deleted_tel = ?, deleted_fax = ?, deleted_signature = ? WHERE login = ?|,undef,
+              $user_config_values_ref->{name}, $user_config_values_ref->{email},
+              $user_config_values_ref->{tel}, $user_config_values_ref->{fax},
+              $user_config_values_ref->{signature}, $self->user->login);
+    $dbh->disconnect;
+  }
+
+  flash_later('info', t8('The user has been deleted.'));
+  $self->redirect_to(action => 'show');
+}
+
+#
+# actions: clients
+#
+
+sub action_new_client {
+  my ($self) = @_;
+
+  $self->client(SL::DB::AuthClient->new(
+    dbhost   => $::auth->{DB_config}->{host},
+    dbport   => $::auth->{DB_config}->{port},
+    dbuser   => $::auth->{DB_config}->{user},
+    dbpasswd => $::auth->{DB_config}->{password},
+  ));
+
+  $self->edit_client_form(title => t8('Create a new client'));
+}
+
+sub action_edit_client {
+  my ($self) = @_;
+  $self->edit_client_form(title => t8('Edit Client'));
+}
+
+sub action_save_client {
+  my ($self) = @_;
+  my $params = delete($::form->{client}) || { };
+  my $is_new = !$params->{id};
+
+  # Assign empty arrays if the browser doesn't send those controls.
+  $params->{groups} ||= [];
+  $params->{users}  ||= [];
+
+  $self->client($is_new ? SL::DB::AuthClient->new : SL::DB::AuthClient->new(id => $params->{id})->load)->assign_attributes(%{ $params });
+
+  my @errors = $self->client->validate;
+
+  if (@errors) {
+    flash('error', @errors);
+    $self->edit_client_form(title => $is_new ? t8('Create a new client') : t8('Edit Client'));
+    return;
+  }
+
+  $self->client->save;
+  if ($self->client->is_default) {
+    SL::DB::Manager::AuthClient->update_all(set => { is_default => 0 }, where => [ '!id' => $self->client->id ]);
   }
+
+  flash_later('info', $is_new ? t8('The client has been created.') : t8('The client has been saved.'));
+  $self->redirect_to(action => 'show');
+}
+
+sub action_delete_client {
+  my ($self) = @_;
+
+  if (!$self->client->delete) {
+    flash('error', t8('The client could not be deleted.'));
+    $self->edit_client_form(title => t8('Edit Client'));
+    return;
+  }
+
+  flash_later('info', t8('The client has been deleted.'));
+  $self->redirect_to(action => 'show');
+}
+
+sub action_test_database_connectivity {
+  my ($self)    = @_;
+
+  my %cfg       = %{ $::form->{client} || {} };
+  my $dbconnect = 'dbi:Pg:dbname=' . $cfg{dbname} . ';host=' . $cfg{dbhost} . ';port=' . $cfg{dbport};
+  my $dbh       = DBI->connect($dbconnect, $cfg{dbuser}, $cfg{dbpasswd});
+
+  my $ok        = !!$dbh;
+  my $error     = $DBI::errstr;
+
+  $dbh->disconnect if $dbh;
+
+  $self->render('admin/test_db_connection', { layout => 0 },
+                title => t8('Database Connection Test'),
+                ok    => $ok,
+                error => $error);
+}
+
+#
+# actions: groups
+#
+
+sub action_new_group {
+  my ($self) = @_;
+
+  $self->group(SL::DB::AuthGroup->new);
+  $self->edit_group_form(title => t8('Create a new group'));
 }
 
-sub action_list_clients_and_users {
+sub action_edit_group {
+  my ($self) = @_;
+  $self->edit_group_form(title => t8('Edit User Group'));
+}
+
+sub action_save_group {
+  my ($self) = @_;
+
+  my $params = delete($::form->{group}) || { };
+  my $is_new = !$params->{id};
+
+  # Assign empty arrays if the browser doesn't send those controls.
+  $params->{clients} ||= [];
+  $params->{users}   ||= [];
+
+  $self->group($is_new ? SL::DB::AuthGroup->new : SL::DB::AuthGroup->new(id => $params->{id})->load)->assign_attributes(%{ $params });
+
+  my @errors = $self->group->validate;
+
+  if (@errors) {
+    flash('error', @errors);
+    $self->edit_group_form(title => $is_new ? t8('Create a new user group') : t8('Edit User Group'));
+    return;
+  }
+
+  $self->group->save;
+
+  flash_later('info', $is_new ? t8('The user group has been created.') : t8('The user group has been saved.'));
+  $self->redirect_to(action => 'show');
+}
+
+sub action_delete_group {
+  my ($self) = @_;
+
+  if (!$self->group->delete) {
+    flash('error', t8('The user group could not be deleted.'));
+    $self->edit_group_form(title => t8('Edit User Group'));
+    return;
+  }
+
+  flash_later('info', t8('The user group has been deleted.'));
+  $self->redirect_to(action => 'show');
+}
+
+#
+# actions: printers
+#
+
+sub action_list_printers {
+  my ($self) = @_;
+  $self->render('admin/list_printers', title => t8('Printer management'));
+}
+
+sub action_new_printer {
+  my ($self) = @_;
+
+  $self->printer(SL::DB::Printer->new);
+  $self->edit_printer_form(title => t8('Create a new printer'));
+}
+
+sub action_edit_printer {
+  my ($self) = @_;
+  $self->edit_printer_form(title => t8('Edit Printer'));
+}
+
+sub action_save_printer {
+  my ($self) = @_;
+  my $params = delete($::form->{printer}) || { };
+  my $is_new = !$params->{id};
+
+  $self->printer($is_new ? SL::DB::Printer->new : SL::DB::Printer->new(id => $params->{id})->load)->assign_attributes(%{ $params });
+
+  my @errors = $self->printer->validate;
+
+  if (@errors) {
+    flash('error', @errors);
+    $self->edit_printer_form(title => $is_new ? t8('Create a new printer') : t8('Edit Printer'));
+    return;
+  }
+
+  $self->printer->save;
+
+  flash_later('info', $is_new ? t8('The printer has been created.') : t8('The printer has been saved.'));
+  $self->redirect_to(action => 'list_printers', 'client.id' => $self->client->id);
+}
+
+sub action_delete_printer {
+  my ($self) = @_;
+
+  if (!$self->printer->delete) {
+    flash('error', t8('The printer could not be deleted.'));
+    $self->edit_printer_form(title => t8('Edit Printer'));
+    return;
+  }
+
+  flash_later('info', t8('The printer has been deleted.'));
+  $self->redirect_to(action => 'list_printers', 'client.id' => $self->client->id);
+}
+
+#
+# actions: database administration
+#
+
+sub action_create_dataset_login {
+  my ($self) = @_;
+
+  $self->database_administration_login_form(
+    title       => t8('Create Dataset'),
+    next_action => 'create_dataset',
+  );
+}
+
+sub action_create_dataset {
+  my ($self) = @_;
+
+  my %superuser = $self->check_database_superuser_privileges(no_credentials_not_an_error => 1);
+  $self->create_dataset_form(superuser => \%superuser);
+}
+
+sub action_do_create_dataset {
+  my ($self) = @_;
+
+  my %superuser = $self->check_database_superuser_privileges;
+
+  my @errors;
+  push @errors, t8("Dataset missing!")          if !$::form->{db};
+  push @errors, t8("Default currency missing!") if !$::form->{defaultcurrency};
+  push @errors, $superuser{error}               if !$superuser{have_privileges} && $superuser{error};
+
+  if (@errors) {
+    flash('error', @errors);
+    return $self->create_dataset_form(superuser => \%superuser);
+  }
+
+  $::form->{encoding} = 'UNICODE';
+  User->new->dbcreate($::form);
+
+  flash_later('info', t8("The dataset #1 has been created.", $::form->{db}));
+  $self->redirect_to(action => 'show');
+}
+
+sub action_delete_dataset_login {
+  my ($self) = @_;
+
+  $self->database_administration_login_form(
+    title       => t8('Delete Dataset'),
+    next_action => 'delete_dataset',
+  );
+}
+
+sub action_delete_dataset {
+  my ($self) = @_;
+  $self->delete_dataset_form;
+}
+
+sub action_do_delete_dataset {
+  my ($self) = @_;
+
+  my @errors;
+  push @errors, t8("Dataset missing!") if !$::form->{db};
+
+  if (@errors) {
+    flash('error', @errors);
+    return $self->delete_dataset_form;
+  }
+
+  User->new->dbdelete($::form);
+
+  flash_later('info', t8("The dataset #1 has been deleted.", $::form->{db}));
+  $self->redirect_to(action => 'show');
+}
+
+#
+# actions: locking, unlocking
+#
+
+sub action_show_lock {
   my ($self) = @_;
 
   $self->render(
-    "admin/list_users",
-    CLIENTS => SL::DB::Manager::AuthClient->get_all_sorted,
-    USERS   => SL::DB::Manager::AuthUser->get_all_sorted,
-    LOCKED  => (-e $self->nologin_file_name),
-    title   => "kivitendo " . $::locale->text('Administration'),
+    "admin/show_lock",
+    title => "kivitendo " . t8('Administration'),
   );
 }
 
 sub action_unlock_system {
   my ($self) = @_;
-  unlink $self->nologin_file_name;
+
+  SL::System::InstallationLock->unlock;
   flash_later('info', t8('Lockfile removed!'));
-  $self->redirect_to(action => 'list_clients_and_users');
+  $self->redirect_to(action => 'show');
 }
 
 sub action_lock_system {
   my ($self) = @_;
 
-  my $fh = IO::File->new($self->nologin_file_name, "w");
-  if (!$fh) {
-    $::form->error(t8('Cannot create Lock!'));
-
-  } else {
-    $fh->close;
-    flash_later('info', t8('Lockfile created!'));
-    $self->redirect_to(action => 'list_clients_and_users');
-  }
+  SL::System::InstallationLock->lock;
+  flash_later('info', t8('Lockfile created!'));
+  $self->redirect_to(action => 'show');
 }
 
 #
 # initializers
 #
 
-sub init_db_cfg            { $::lx_office_conf{'authentication/database'}               }
-sub init_nologin_file_name { $::lx_office_conf{paths}->{userspath} . '/nologin';        }
-sub init_client            { SL::DB::AuthClient->new(id => $::form->{client_id})->load; }
-sub init_user              { SL::DB::AuthUser  ->new(id => $::form->{user_id}  )->load; }
+sub init_db_cfg            { $::lx_office_conf{'authentication/database'}                                                    }
+sub init_is_locked         { SL::System::InstallationLock->is_locked                                                         }
+sub init_client            { SL::DB::Manager::AuthClient->find_by(id => (($::form->{client} || {})->{id} || $::form->{id}))  }
+sub init_user              { SL::DB::AuthUser  ->new(id => ($::form->{id} || ($::form->{user}    || {})->{id}))->load        }
+sub init_group             { SL::DB::AuthGroup ->new(id => ($::form->{id} || ($::form->{group}   || {})->{id}))->load        }
+sub init_printer           { SL::DB::Printer   ->new(id => ($::form->{id} || ($::form->{printer} || {})->{id}))->load        }
+sub init_all_clients       { SL::DB::Manager::AuthClient->get_all_sorted                                                     }
+sub init_all_users         { SL::DB::Manager::AuthUser  ->get_all_sorted                                                     }
+sub init_all_groups        { SL::DB::Manager::AuthGroup ->get_all_sorted                                                     }
+sub init_all_printers      { SL::DB::Manager::Printer   ->get_all_sorted                                                     }
+sub init_all_dateformats   { [ qw(mm/dd/yy dd/mm/yy dd.mm.yy yyyy-mm-dd)      ]                                              }
+sub init_all_numberformats { [ '1,000.00', '1000.00', '1.000,00', '1000,00', "1'000.00" ]                                    }
+sub init_all_stylesheets   { [ qw(lx-office-erp.css Mobile.css kivitendo.css) ]                                              }
+sub init_all_dbsources             { [ sort User->dbsources($::form)                               ] }
+sub init_all_used_dbsources        { { map { (join(':', $_->dbhost || 'localhost', $_->dbport || 5432, $_->dbname) => $_->name) } @{ $_[0]->all_clients }  } }
+sub init_all_accounting_methods    { [ { id => 'accrual',   name => t8('Accrual accounting')  }, { id => 'cash',     name => t8('Cash accounting')       } ] }
+sub init_all_inventory_systems     { [ { id => 'perpetual', name => t8('Perpetual inventory') }, { id => 'periodic', name => t8('Periodic inventory')    } ] }
+sub init_all_profit_determinations { [ { id => 'balance',   name => t8('Balancing')           }, { id => 'income',   name => t8('Cash basis accounting') } ] }
+
+sub init_all_charts {
+  tie my %dir_h, 'IO::Dir', 'sql/';
+
+  return [
+    map { s/-chart\.sql$//; +{ id => $_ } }
+    sort
+    grep { /-chart\.sql\z/ && !/Default-chart.sql\z/ }
+    keys %dir_h
+  ];
+}
+
+sub init_all_menustyles    {
+  return [
+    { id => 'old', title => $::locale->text('Old (on the side)') },
+    { id => 'v3',  title => $::locale->text('Top (CSS)') },
+    { id => 'neu', title => $::locale->text('Top (Javascript)') },
+  ];
+}
+
+sub init_all_rights {
+  my (@sections, $current_section);
+
+  foreach my $entry ($::auth->all_rights_full) {
+    if ($entry->[2]) {
+      push @sections, { description => t8($entry->[1]), rights => [] };
+
+    } elsif (@sections) {
+      push @{ $sections[-1]->{rights} }, {
+        name        => $entry->[0],
+        description => t8($entry->[1]),
+      };
+
+    } else {
+      die "Right without sections: " . join('::', @{ $entry });
+    }
+  }
+
+  return \@sections;
+}
+
+sub init_all_countrycodes {
+  my %cc = User->country_codes;
+  return [ map { id => $_, title => $cc{$_} }, sort { $cc{$a} cmp $cc{$b} } keys %cc ];
+}
 
 #
 # filters
@@ -130,21 +564,112 @@ sub init_user              { SL::DB::AuthUser  ->new(id => $::form->{user_id}  )
 sub setup_layout {
   my ($self, $action) = @_;
 
+  my $defaults = SL::DefaultManager->new($::lx_office_conf{system}->{default_manager});
   $::request->layout(SL::Layout::Dispatcher->new(style => 'admin'));
-  $::request->layout->use_stylesheet("lx-office-erp.css");
   $::form->{favicon} = "favicon.ico";
+  %::myconfig        = (
+    countrycode      => $defaults->language('de'),
+    numberformat     => $defaults->numberformat('1.000,00'),
+    dateformat       => $defaults->dateformat('dd.mm.yy'),
+  ) if !%::myconfig;
+}
+
+sub setup_client {
+  my ($self) = @_;
+
+  $self->client(SL::DB::Manager::AuthClient->get_default || $self->all_clients->[0]) if !$self->client;
+  $::auth->set_client($self->client->id) if $self->client;
 }
 
 #
-# helpers
+# displaying forms
 #
 
+sub use_multiselect_js {
+  my ($self) = @_;
+
+  $::request->layout->use_javascript("${_}.js") for qw(jquery.selectboxes jquery.multiselect2side);
+  return $self;
+}
+
+sub use_ckeditor_js {
+  my ($self) = @_;
+
+  $::request->{layout}->use_javascript("${_}.js") for qw(ckeditor/ckeditor ckeditor/adapters/jquery);
+  return $self;
+}
+
 sub login_form {
   my ($self, %params) = @_;
-  $::request->layout->focus('#admin_password');
-  $self->render('admin/adminlogin', title => t8('kivitendo v#1 administration', $::form->{version}), %params);
+  $::request->layout(SL::Layout::AdminLogin->new);
+  my $version         = SL::Version->get_version;
+  $self->render('admin/adminlogin', title => t8('kivitendo v#1 administration', $version), %params, version => $version );
+}
+
+sub edit_user_form {
+  my ($self, %params) = @_;
+  $self->use_multiselect_js->use_ckeditor_js->render('admin/edit_user', %params);
+}
+
+sub edit_client_form {
+  my ($self, %params) = @_;
+  $self->use_multiselect_js->render('admin/edit_client', %params);
+}
+
+sub edit_group_form {
+  my ($self, %params) = @_;
+  $self->use_multiselect_js->render('admin/edit_group', %params);
+}
+
+sub edit_printer_form {
+  my ($self, %params) = @_;
+  $self->render('admin/edit_printer', %params);
+}
+
+sub database_administration_login_form {
+  my ($self, %params) = @_;
+
+  $self->render(
+    'admin/dbadmin',
+    dbhost    => $::form->{dbhost}    || $::auth->{DB_config}->{host} || 'localhost',
+    dbport    => $::form->{dbport}    || $::auth->{DB_config}->{port} || 5432,
+    dbuser    => $::form->{dbuser}    || $::auth->{DB_config}->{user} || 'kivitendo',
+    dbpasswd  => $::form->{dbpasswd}  || $::auth->{DB_config}->{password},
+    dbdefault => $::form->{dbdefault} || 'template1',
+    %params,
+  );
+}
+
+sub create_dataset_form {
+  my ($self, %params) = @_;
+
+  my $defaults = SL::DefaultManager->new($::lx_office_conf{system}->{default_manager});
+  $::form->{favicon} = "favicon.ico";
+  $::form->{countrymode}             = $defaults->country('DE');
+  $::form->{chart}                   = $defaults->chart_of_accounts('Germany-DATEV-SKR03EU');
+  $::form->{defaultcurrency}         = $defaults->currency('EUR');
+  $::form->{precision}               = $defaults->precision(0.01);
+  $::form->{accounting_method}       = $defaults->accounting_method('cash');
+  $::form->{inventory_system}        = $defaults->inventory_system('periodic');
+  $::form->{profit_determination}    = $defaults->profit_determination('balance');
+  $::form->{feature_balance}         = $defaults->feature_balance(1);
+  $::form->{feature_datev}           = $defaults->feature_datev(1);
+  $::form->{feature_erfolgsrechnung} = $defaults->feature_erfolgsrechnung(0);
+  $::form->{feature_eurechnung}      = $defaults->feature_eurechnung(1);
+  $::form->{feature_ustva}           = $defaults->feature_ustva(1);
+
+  $self->render('admin/create_dataset', title => (t8('Database Administration') . " / " . t8('Create Dataset')), superuser => $params{superuser});
+}
+
+sub delete_dataset_form {
+  my ($self, %params) = @_;
+  $self->render('admin/delete_dataset', title => (t8('Database Administration') . " / " . t8('Delete Dataset')));
 }
 
+#
+# helpers
+#
+
 sub check_auth_db_and_tables {
   my ($self) = @_;
 
@@ -162,7 +687,7 @@ sub check_auth_db_and_tables {
 }
 
 sub apply_dbupgrade_scripts {
-  return SL::DBUpgrade2->new(form => $::form, dbdriver => 'Pg', auth => 1)->apply_admin_dbupgrade_scripts(1);
+  return SL::DBUpgrade2->new(form => $::form, auth => 1)->apply_admin_dbupgrade_scripts(1);
 }
 
 sub authenticate_root {
@@ -173,9 +698,68 @@ sub authenticate_root {
   $::auth->punish_wrong_login;
   $::auth->delete_session_value('admin_password');
 
-  $self->login_form(error => t8('Incorrect Password!'));
+  $self->login_form(error => t8('Incorrect password!'));
 
   return undef;
 }
 
+sub is_user_used_for_task_server {
+  my ($self, $user) = @_;
+
+  return undef if !$user;
+  return join ', ', sort_by { lc } map { $_->name } @{ SL::DB::Manager::AuthClient->get_all(where => [ task_server_user_id => $user->id ]) };
+}
+
+sub check_database_superuser_privileges {
+  my ($self, %params) = @_;
+
+  my %dbconnect_form = %{ $::form };
+  my %result         = (
+    username => $dbconnect_form{dbuser},
+    password => $dbconnect_form{dbpasswd},
+  );
+
+  my $check_privileges = sub {
+    my $dbh = SL::DBConnect->connect($dbconnect_form{dbconnect}, $result{username}, $result{password}, SL::DBConnect->get_options);
+    return (error => $::locale->text('The credentials (username & password) for connecting database are wrong.')) if !$dbh;
+
+    my $is_superuser = SL::DBUtils::role_is_superuser($dbh, $result{username});
+
+    $dbh->disconnect;
+
+    return (have_privileges => $is_superuser);
+  };
+
+  User::dbconnect_vars(\%dbconnect_form, $dbconnect_form{dbdefault});
+
+  %result = (
+    %result,
+    $check_privileges->(),
+  );
+
+  if (!$result{have_privileges}) {
+    $result{username} = $::form->{database_superuser_user};
+    $result{password} = $::form->{database_superuser_password};
+
+    if ($::form->{database_superuser_user}) {
+      %result = (
+        %result,
+        $check_privileges->(),
+      );
+    }
+  }
+
+  if ($result{have_privileges}) {
+    $::auth->set_session_value(database_superuser_username => $result{username}, database_superuser_password => $result{password});
+    return %result;
+  }
+
+  $::auth->delete_session_value(qw(database_superuser_username database_superuser_password));
+
+  return ()                                                                            if !$::form->{database_superuser_user} && $params{no_credentials_not_an_error};
+  return (%result, error => $::locale->text('No superuser credentials were entered.')) if !$::form->{database_superuser_user};
+  return %result                                                                       if $result{error};
+  return (%result, error => $::locale->text('The database user \'#1\' does not have superuser privileges.', $result{username}));
+}
+
 1;