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package SL::Controller::Admin;

use strict;

use parent qw(SL::Controller::Base);

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 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_in_form {
my ($class, %params) = @_;
return $params{action} eq 'login';
}

#
# actions: login, logout
#

sub action_login {
my ($self) = @_;

return $self->login_form if !$::form->{do_login};
return if !$self->authenticate_root;
return if !$self->check_auth_db_and_tables;
return if $self->apply_dbupgrade_scripts;

$self->redirect_to(action => 'show');
}

sub action_logout {
my ($self) = @_;
$::auth->destroy_session;
$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->redirect_to(action => 'show');
}

sub action_create_auth_db {
my ($self) = @_;

$::auth->create_database(superuser => $::form->{db_superuser},
superuser_password => $::form->{db_superuser_password},
template => $::form->{db_template});
$self->check_auth_db_and_tables;
}

sub action_create_auth_tables {
my ($self) = @_;

$::auth->create_tables;
$::auth->set_session_value('admin_password', $::lx_office_conf{authentication}->{admin_password});
$::auth->create_or_refresh_session;

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) } $::auth->all_rights ],
)->save;
}

$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_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/show_lock",
title => "kivitendo " . t8('Administration'),
);
}

sub action_unlock_system {
my ($self) = @_;

SL::System::InstallationLock->unlock;
flash_later('info', t8('Lockfile removed!'));
$self->redirect_to(action => 'show');
}

sub action_lock_system {
my ($self) = @_;

SL::System::InstallationLock->lock;
flash_later('info', t8('Lockfile created!'));
$self->redirect_to(action => 'show');
}

#
# initializers
#

sub init_db_cfg { $::lx_office_conf{'authentication/database'} }
sub init_is_locked { SL::System::InstallationLock->is_locked }
sub init_client { SL::DB::Manager::AuthClient->find_by(id => (($::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
#

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'));
$::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;
}

#
# displaying forms
#

sub use_multiselect_js {
my ($self) = @_;

$::request->layout->use_javascript("${_}.js") for qw(jquery.selectboxes jquery.multiselect2side);
return $self;
}

sub login_form {
my ($self, %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->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) = @_;

if (!$::auth->check_database) {
$self->render('admin/check_auth_database', title => t8('Authentification database creation'));
return 0;
}

if (!$::auth->check_tables) {
$self->render('admin/check_auth_tables', title => t8('Authentification tables creation'));
return 0;
}

return 1;
}

sub apply_dbupgrade_scripts {
return SL::DBUpgrade2->new(form => $::form, auth => 1)->apply_admin_dbupgrade_scripts(1);
}

sub authenticate_root {
my ($self) = @_;

return 1 if $::auth->authenticate_root($::form->{'{AUTH}admin_password'}) == $::auth->OK();

$::auth->punish_wrong_login;
$::auth->delete_session_value('admin_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}));
}

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