Merge branch 'b-3.6.1' of ../kivitendo-erp_20220811
[kivitendo-erp.git] / SL / Controller / BankTransaction.pm
index bbe4edf..9d432d5 100644 (file)
@@ -17,18 +17,28 @@ use SL::SEPA;
 use SL::DB::Invoice;
 use SL::DB::PurchaseInvoice;
 use SL::DB::RecordLink;
+use SL::DB::ReconciliationLink;
 use SL::JSON;
 use SL::DB::Chart;
 use SL::DB::AccTransaction;
+use SL::DB::BankTransactionAccTrans;
 use SL::DB::Tax;
-use SL::DB::Draft;
 use SL::DB::BankAccount;
-use SL::Presenter;
+use SL::DB::GLTransaction;
+use SL::DB::RecordTemplate;
+use SL::DB::SepaExportItem;
+use SL::DBUtils qw(like do_query);
+
+use SL::Presenter::Tag qw(checkbox_tag html_tag);
+use Carp;
+use List::UtilsBy qw(partition_by);
+use List::MoreUtils qw(any);
 use List::Util qw(max);
 
 use Rose::Object::MakeMethods::Generic
 (
- 'scalar --get_set_init' => [ qw(models) ],
+  scalar                  => [ qw(callback transaction) ],
+  'scalar --get_set_init' => [ qw(models problems) ],
 );
 
 __PACKAGE__->run_before('check_auth');
@@ -43,6 +53,7 @@ sub action_search {
 
   my $bank_accounts = SL::DB::Manager::BankAccount->get_all_sorted( query => [ obsolete => 0 ] );
 
+  $self->setup_search_action_bar;
   $self->render('bank_transactions/search',
                  BANK_ACCOUNTS => $bank_accounts);
 }
@@ -53,58 +64,111 @@ sub action_list_all {
   $self->make_filter_summary;
   $self->prepare_report;
 
+  $self->setup_list_all_action_bar;
   $self->report_generator_list_objects(report => $self->{report}, objects => $self->models->get);
 }
 
-sub action_list {
-  my ($self) = @_;
+sub gather_bank_transactions_and_proposals {
+  my ($self, %params) = @_;
 
-  if (!$::form->{filter}{bank_account}) {
-    flash('error', t8('No bank account chosen!'));
-    $self->action_search;
-    return;
-  }
-
-  my $sort_by = $::form->{sort_by} || 'transdate';
+  my $sort_by = $params{sort_by} || 'transdate';
   $sort_by = 'transdate' if $sort_by eq 'proposal';
-  $sort_by .= $::form->{sort_dir} ? ' DESC' : ' ASC';
-
-  my $fromdate = $::locale->parse_date_to_object($::form->{filter}->{fromdate});
-  my $todate   = $::locale->parse_date_to_object($::form->{filter}->{todate});
-  $todate->add( days => 1 ) if $todate;
+  $sort_by .= $params{sort_dir} ? ' DESC' : ' ASC';
 
   my @where = ();
-  push @where, (transdate => { ge => $fromdate }) if ($fromdate);
-  push @where, (transdate => { lt => $todate })   if ($todate);
-  my $bank_account = SL::DB::Manager::BankAccount->find_by( id => $::form->{filter}{bank_account} );
+  push @where, (transdate => { ge => $params{fromdate} }) if $params{fromdate};
+  push @where, (transdate => { lt => $params{todate} })   if $params{todate};
   # bank_transactions no younger than starting date,
+  # including starting date (same search behaviour as fromdate)
   # but OPEN invoices to be matched may be from before
-  if ( $bank_account->reconciliation_starting_date ) {
-    push @where, (transdate => { gt => $bank_account->reconciliation_starting_date });
+  if ( $params{bank_account}->reconciliation_starting_date ) {
+    push @where, (transdate => { ge => $params{bank_account}->reconciliation_starting_date });
   };
 
-  my $bank_transactions = SL::DB::Manager::BankTransaction->get_all(where => [ amount => {ne => \'invoice_amount'},
-                                                                               local_bank_account_id => $::form->{filter}{bank_account},
-                                                                               @where ],
-                                                                    with_objects => [ 'local_bank_account', 'currency' ],
-                                                                    sort_by => $sort_by, limit => 10000);
-
-  my $all_open_ar_invoices = SL::DB::Manager::Invoice->get_all(where => [amount => { gt => \'paid' }], with_objects => 'customer');
-  my $all_open_ap_invoices = SL::DB::Manager::PurchaseInvoice->get_all(where => [amount => { gt => \'paid' }], with_objects => 'vendor');
+  my $bank_transactions = SL::DB::Manager::BankTransaction->get_all(
+    with_objects => [ 'local_bank_account', 'currency' ],
+    sort_by      => $sort_by,
+    limit        => 10000,
+    where        => [
+      amount                => {ne => \'invoice_amount'},      # '} make emacs happy
+      local_bank_account_id => $params{bank_account}->id,
+      cleared               => 0,
+      @where
+    ],
+  );
+  # credit notes have a negative amount, treat differently
+  my $all_open_ar_invoices = SL::DB::Manager::Invoice->get_all(where        => [ or => [ amount => { gt => \'paid' },                 # '} make emacs happy
+                                                                                         and    => [ type    => 'credit_note',
+                                                                                                     amount  => { lt => \'paid' }     # '} make emacs happy
+                                                                                         ],
+                                                                                 ],
+                                                               ],
+                                                               with_objects => ['customer','payment_terms']);
+
+  my $all_open_ap_invoices = SL::DB::Manager::PurchaseInvoice->get_all(where        => [amount => { ne => \'paid' }],                 #  '}] make emacs happy
+                                                                       with_objects => ['vendor'  ,'payment_terms']);
+  my $all_open_sepa_export_items = SL::DB::Manager::SepaExportItem->get_all(where        => [chart_id               => $params{bank_account}->chart_id ,
+                                                                                             'sepa_export.executed' => 0,
+                                                                                             'sepa_export.closed'   => 0
+                                                                            ],
+                                                                            with_objects => ['sepa_export']);
 
   my @all_open_invoices;
   # filter out invoices with less than 1 cent outstanding
-  push @all_open_invoices, grep { abs($_->amount - $_->paid) >= 0.01 } @{ $all_open_ar_invoices };
-  push @all_open_invoices, grep { abs($_->amount - $_->paid) >= 0.01 } @{ $all_open_ap_invoices };
+  push @all_open_invoices, map { $_->{is_ar}=1 ; $_ } grep { abs($_->amount - $_->paid) >= 0.01 } @{ $all_open_ar_invoices };
+  push @all_open_invoices, map { $_->{is_ar}=0 ; $_ } grep { abs($_->amount - $_->paid) >= 0.01 } @{ $all_open_ap_invoices };
+
+  my %sepa_exports;
+  my %sepa_export_items_by_id = partition_by { $_->ar_id || $_->ap_id } @$all_open_sepa_export_items;
+
+  # first collect sepa export items to open invoices
+  foreach my $open_invoice (@all_open_invoices){
+    $open_invoice->{realamount}  = $::form->format_amount(\%::myconfig,$open_invoice->amount,2);
+    $open_invoice->{skonto_type} = 'without_skonto';
+    foreach (@{ $sepa_export_items_by_id{ $open_invoice->id } || [] }) {
+      my $factor                   = ($_->ar_id == $open_invoice->id ? 1 : -1);
+      $open_invoice->{realamount}  = $::form->format_amount(\%::myconfig,$open_invoice->amount*$factor,2);
+
+      $open_invoice->{skonto_type} = $_->payment_type;
+      $sepa_exports{$_->sepa_export_id} ||= { count => 0, is_ar => 0, amount => 0, proposed => 0, invoices => [], item => $_ };
+      $sepa_exports{$_->sepa_export_id}->{count}++;
+      $sepa_exports{$_->sepa_export_id}->{is_ar}++ if  $_->ar_id == $open_invoice->id;
+      $sepa_exports{$_->sepa_export_id}->{amount} += $_->amount * $factor;
+      push @{ $sepa_exports{$_->sepa_export_id}->{invoices} }, $open_invoice;
+    }
+  }
 
   # try to match each bank_transaction with each of the possible open invoices
   # by awarding points
+  my @proposals;
 
   foreach my $bt (@{ $bank_transactions }) {
-    next unless $bt->{remote_name};  # bank has no name, usually fees, use create invoice to assign
+    ## 5 Stellen hinter dem Komma auf 2 Stellen reduzieren
+    $bt->amount($bt->amount*1);
+    $bt->invoice_amount($bt->invoice_amount*1);
+
+    $bt->{proposals}    = [];
+    $bt->{rule_matches} = [];
 
     $bt->{remote_name} .= $bt->{remote_name_1} if $bt->{remote_name_1};
 
+    if ( $bt->is_batch_transaction ) {
+      my $found=0;
+      foreach ( keys  %sepa_exports) {
+        if ( abs(($sepa_exports{$_}->{amount} * 1) - ($bt->amount * 1)) < 0.01 ) {
+          ## jupp
+          @{$bt->{proposals}} = @{$sepa_exports{$_}->{invoices}};
+          $bt->{sepa_export_ok} = 1;
+          $sepa_exports{$_}->{proposed}=1;
+          push(@proposals, $bt);
+          $found=1;
+          last;
+        }
+      }
+      next if $found;
+      # batch transaction has no remotename !!
+    }
+
     # try to match the current $bt to each of the open_invoices, saving the
     # results of get_agreement_with_invoice in $open_invoice->{agreement} and
     # $open_invoice->{rule_matches}.
@@ -114,11 +178,13 @@ sub action_list {
     # the arrays $bt->{proposals} and $bt->{rule_matches}, and the agreement
     # score is stored in $bt->{agreement}
 
-    foreach my $open_invoice (@all_open_invoices){
-      ($open_invoice->{agreement}, $open_invoice->{rule_matches}) = $bt->get_agreement_with_invoice($open_invoice);
-    };
-
-    $bt->{proposals} = [];
+    foreach my $open_invoice (@all_open_invoices) {
+      ($open_invoice->{agreement}, $open_invoice->{rule_matches}) = $bt->get_agreement_with_invoice($open_invoice,
+        sepa_export_items => $all_open_sepa_export_items,
+      );
+      $open_invoice->{realamount} = $::form->format_amount(\%::myconfig,
+                                      $open_invoice->amount * ($open_invoice->{is_ar} ? 1 : -1), 2);
+    }
 
     my $agreement = 15;
     my $min_agreement = 3; # suggestions must have at least this score
@@ -142,22 +208,53 @@ sub action_list {
   # to qualify as a proposal there has to be
   # * agreement >= 5  TODO: make threshold configurable in configuration
   # * there must be only one exact match
-  # * depending on whether sales or purchase the amount has to have the correct sign (so Gutschriften don't work?)
   my $proposal_threshold = 5;
-  my @proposals = grep { $_->{agreement} >= $proposal_threshold
-                         and 1 == scalar @{ $_->{proposals} }
-                         and (@{ $_->{proposals} }[0]->is_sales ? abs(@{ $_->{proposals} }[0]->amount - $_->amount) < 0.01  : abs(@{ $_->{proposals} }[0]->amount + $_->amount) < 0.01) } @{ $bank_transactions };
+  my @otherproposals = grep {
+       ($_->{agreement} >= $proposal_threshold)
+    && (1 == scalar @{ $_->{proposals} })
+  } @{ $bank_transactions };
+
+  push @proposals, @otherproposals;
 
   # sort bank transaction proposals by quality (score) of proposal
-  $bank_transactions = [ sort { $a->{agreement} <=> $b->{agreement} } @{ $bank_transactions } ] if $::form->{sort_by} eq 'proposal' and $::form->{sort_dir} == 1;
-  $bank_transactions = [ sort { $b->{agreement} <=> $a->{agreement} } @{ $bank_transactions } ] if $::form->{sort_by} eq 'proposal' and $::form->{sort_dir} == 0;
+  if ($params{sort_by} && $params{sort_by} eq 'proposal') {
+    my $dir = $params{sort_dir} ? 1 : -1;
+    $bank_transactions = [ sort { ($a->{agreement} <=> $b->{agreement}) * $dir } @{ $bank_transactions } ];
+  }
+
+  return ( $bank_transactions , \@proposals );
+}
 
+sub action_list {
+  my ($self) = @_;
+
+  if (!$::form->{filter}{bank_account}) {
+    flash('error', t8('No bank account chosen!'));
+    $self->action_search;
+    return;
+  }
+
+  my $bank_account = SL::DB::BankAccount->load_cached($::form->{filter}->{bank_account});
+  my $fromdate     = $::locale->parse_date_to_object($::form->{filter}->{fromdate});
+  my $todate       = $::locale->parse_date_to_object($::form->{filter}->{todate});
+  $todate->add( days => 1 ) if $todate;
 
+  my ($bank_transactions, $proposals) = $self->gather_bank_transactions_and_proposals(
+    bank_account => $bank_account,
+    fromdate     => $fromdate,
+    todate       => $todate,
+    sort_by      => $::form->{sort_by},
+    sort_dir     => $::form->{sort_dir},
+  );
+
+  $::request->layout->add_javascripts("kivi.BankTransaction.js");
   $self->render('bank_transactions/list',
                 title             => t8('Bank transactions MT940'),
                 BANK_TRANSACTIONS => $bank_transactions,
-                PROPOSALS         => \@proposals,
-                bank_account      => $bank_account );
+                PROPOSALS         => $proposals,
+                bank_account      => $bank_account,
+                ui_tab            => scalar(@{ $proposals }) > 0 ? 1 : 0,
+              );
 }
 
 sub action_assign_invoice {
@@ -165,46 +262,58 @@ sub action_assign_invoice {
 
   $self->{transaction} = SL::DB::Manager::BankTransaction->find_by(id => $::form->{bt_id});
 
-  $self->render('bank_transactions/assign_invoice', { layout  => 0 },
-                title      => t8('Assign invoice'),);
+  $self->render('bank_transactions/assign_invoice',
+                { layout => 0 },
+                title => t8('Assign invoice'),);
 }
 
 sub action_create_invoice {
   my ($self) = @_;
   my %myconfig = %main::myconfig;
 
-  $self->{transaction} = SL::DB::Manager::BankTransaction->find_by(id => $::form->{bt_id});
-  my $vendor_of_transaction = SL::DB::Manager::Vendor->find_by(account_number => $self->{transaction}->{remote_account_number});
+  $self->transaction(SL::DB::Manager::BankTransaction->find_by(id => $::form->{bt_id}));
 
-  my $drafts = SL::DB::Manager::Draft->get_all(where => [ module => 'ap'] , with_objects => 'employee');
+  my $vendor_of_transaction = SL::DB::Manager::Vendor->find_by(iban => $self->transaction->{remote_account_number});
+  my $use_vendor_filter     = $self->transaction->{remote_account_number} && $vendor_of_transaction;
 
-  my @filtered_drafts;
+  my $templates_ap = SL::DB::Manager::RecordTemplate->get_all(
+    where        => [ template_type => 'ap_transaction' ],
+    sort_by      => [ qw(template_name) ],
+    with_objects => [ qw(employee vendor) ],
+  );
+  my $templates_gl = SL::DB::Manager::RecordTemplate->get_all(
+    query        => [ template_type => 'gl_transaction',
+                      chart_id      => SL::DB::Manager::BankAccount->find_by(id => $self->transaction->local_bank_account_id)->chart_id,
+                    ],
+    sort_by      => [ qw(template_name) ],
+    with_objects => [ qw(employee record_template_items) ],
+  );
 
-  foreach my $draft ( @{ $drafts } ) {
-    my $draft_as_object = YAML::Load($draft->form);
-    my $vendor = SL::DB::Manager::Vendor->find_by(id => $draft_as_object->{vendor_id});
-    $draft->{vendor} = $vendor->name;
-    $draft->{vendor_id} = $vendor->id;
-    push @filtered_drafts, $draft;
+  # pre filter templates_ap, if we have a vendor match (IBAN eq IBAN) - show and allow user to edit this via gui!
+  $templates_ap = [ grep { $_->vendor_id == $vendor_of_transaction->id } @{ $templates_ap } ] if $use_vendor_filter;
+
+  $self->callback($self->url_for(
+    action                => 'list',
+    'filter.bank_account' => $::form->{filter}->{bank_account},
+    'filter.todate'       => $::form->{filter}->{todate},
+    'filter.fromdate'     => $::form->{filter}->{fromdate},
+  ));
+
+  # if we have exactly one ap match, use this directly
+  if (1 == scalar @{ $templates_ap }) {
+    $self->redirect_to($self->load_ap_record_template_url($templates_ap->[0]));
+
+  } else {
+    my $dialog_html = $self->render(
+      'bank_transactions/create_invoice',
+      { layout => 0, output => 0 },
+      title        => t8('Create invoice'),
+      TEMPLATES_GL => $use_vendor_filter && @{ $templates_ap } ? undef : $templates_gl,
+      TEMPLATES_AP => $templates_ap,
+      vendor_name  => $use_vendor_filter && @{ $templates_ap } ? $vendor_of_transaction->name : undef,
+    );
+    $self->js->run('kivi.BankTransaction.show_create_invoice_dialog', $dialog_html)->render;
   }
-
-  #Filter drafts
-  @filtered_drafts = grep { $_->{vendor_id} == $vendor_of_transaction->id } @filtered_drafts if $vendor_of_transaction;
-
-  my $all_vendors = SL::DB::Manager::Vendor->get_all();
-
-  $self->render('bank_transactions/create_invoice', { layout  => 0 },
-      title      => t8('Create invoice'),
-      DRAFTS     => \@filtered_drafts,
-      vendor_id  => $vendor_of_transaction ? $vendor_of_transaction->id : undef,
-      vendor_name => $vendor_of_transaction ? $vendor_of_transaction->name : undef,
-      ALL_VENDORS => $all_vendors,
-      limit      => $myconfig{vclimit},
-      callback   => $self->url_for(action                => 'list',
-                                   'filter.bank_account' => $::form->{filter}->{bank_account},
-                                   'filter.todate'       => $::form->{filter}->{todate},
-                                   'filter.fromdate'     => $::form->{filter}->{fromdate}),
-      );
 }
 
 sub action_ajax_payment_suggestion {
@@ -214,60 +323,62 @@ sub action_ajax_payment_suggestion {
   # create an HTML blob to be used by the js function add_invoices in templates/webpages/bank_transactions/list.html
   # and return encoded as JSON
 
-  my $bt = SL::DB::Manager::BankTransaction->find_by( id => $::form->{bt_id} );
-  my $invoice = SL::DB::Manager::Invoice->find_by( id => $::form->{prop_id} );
-  $invoice = SL::DB::Manager::PurchaseInvoice->find_by( id => $::form->{prop_id} ) unless $invoice;
+  croak("Need bt_id") unless $::form->{bt_id};
 
-  die unless $bt and $invoice;
+  my $invoice = SL::DB::Manager::Invoice->find_by( id => $::form->{prop_id} ) || SL::DB::Manager::PurchaseInvoice->find_by( id => $::form->{prop_id} );
 
-  my @select_options = $invoice->get_payment_select_options_for_bank_transaction($::form->{bt_id});
+  croak("No valid invoice found") unless $invoice;
 
-  my $html;
-  $html .= SL::Presenter->input_tag('invoice_ids.' . $::form->{bt_id} . '[]', $::form->{prop_id} , type => 'hidden');
-  $html .= SL::Presenter->escape( $invoice->invnumber );
-  $html .= SL::Presenter->select_tag('invoice_skontos.' . $::form->{bt_id} . '[]', \@select_options,
-                                              value_key => 'payment_type',
-                                              title_key => 'display' ) if @select_options;
-  $html .= '<a href=# onclick="delete_invoice(' . $::form->{bt_id} . ',' . $::form->{prop_id} . ');">x</a>';
-  $html = SL::Presenter->html_tag('div', $html, id => $::form->{bt_id} . '.' . $::form->{prop_id});
+  my $html = $self->render(
+    'bank_transactions/_payment_suggestion', { output => 0 },
+    bt_id          => $::form->{bt_id},
+    invoice        => $invoice,
+  );
 
-  $self->render(\ SL::JSON::to_json( { 'html' => $html } ), { layout => 0, type => 'json', process => 0 });
+  $self->render(\ SL::JSON::to_json( { 'html' => "$html" } ), { layout => 0, type => 'json', process => 0 });
 };
 
-sub action_filter_drafts {
+sub action_filter_templates {
   my ($self) = @_;
 
-  $self->{transaction} = SL::DB::Manager::BankTransaction->find_by(id => $::form->{bt_id});
-  my $vendor_of_transaction = SL::DB::Manager::Vendor->find_by(account_number => $self->{transaction}->{remote_account_number});
-
-  my $drafts = SL::DB::Manager::Draft->get_all(with_objects => 'employee');
-
-  my @filtered_drafts;
-
-  foreach my $draft ( @{ $drafts } ) {
-    my $draft_as_object = YAML::Load($draft->form);
-    my $vendor = SL::DB::Manager::Vendor->find_by(id => $draft_as_object->{vendor_id});
-    $draft->{vendor} = $vendor->name;
-    $draft->{vendor_id} = $vendor->id;
-    push @filtered_drafts, $draft;
-  }
+  $self->{transaction}      = SL::DB::Manager::BankTransaction->find_by(id => $::form->{bt_id});
+
+  my (@filter, @filter_ap);
+
+  # filter => gl and ap | filter_ap = ap (i.e. vendorname)
+  push @filter,    ('template_name' => { ilike => '%' . $::form->{template} . '%' })  if $::form->{template};
+  push @filter,    ('reference'     => { ilike => '%' . $::form->{reference} . '%' }) if $::form->{reference};
+  push @filter_ap, ('vendor.name'   => { ilike => '%' . $::form->{vendor} . '%' })    if $::form->{vendor};
+  push @filter_ap, @filter;
+  my $templates_gl = SL::DB::Manager::RecordTemplate->get_all(
+    query        => [ template_type => 'gl_transaction',
+                      chart_id      => SL::DB::Manager::BankAccount->find_by(id => $self->transaction->local_bank_account_id)->chart_id,
+                      (and => \@filter) x !!@filter
+                    ],
+    with_objects => [ qw(employee record_template_items) ],
+  );
 
-  my $vendor_name = $::form->{vendor};
-  my $vendor_id = $::form->{vendor_id};
+  my $templates_ap = SL::DB::Manager::RecordTemplate->get_all(
+    where        => [ template_type => 'ap_transaction', (and => \@filter_ap) x !!@filter_ap ],
+    with_objects => [ qw(employee vendor) ],
+  );
+  $::form->{filter} //= {};
 
-  #Filter drafts
-  @filtered_drafts = grep { $_->{vendor_id} == $vendor_id } @filtered_drafts if $vendor_id;
-  @filtered_drafts = grep { $_->{vendor} =~ /$vendor_name/i } @filtered_drafts if $vendor_name;
+  $self->callback($self->url_for(
+    action                => 'list',
+    'filter.bank_account' => $::form->{filter}->{bank_account},
+    'filter.todate'       => $::form->{filter}->{todate},
+    'filter.fromdate'     => $::form->{filter}->{fromdate},
+  ));
 
   my $output  = $self->render(
-      'bank_transactions/filter_drafts',
-      { output      => 0 },
-      DRAFTS => \@filtered_drafts,
-      );
-
-  my %result = ( count => 0, html => $output );
+    'bank_transactions/_template_list',
+    { output => 0 },
+    TEMPLATES_AP => $templates_ap,
+    TEMPLATES_GL => $templates_gl,
+  );
 
-  $self->render(\to_json(\%result), { type => 'json', process => 0 });
+  $self->render(\to_json({ html => $output }), { type => 'json', process => 0 });
 }
 
 sub action_ajax_add_list {
@@ -277,8 +388,8 @@ sub action_ajax_add_list {
   my @where_purchase = (amount => { ne => \'paid' });
 
   if ($::form->{invnumber}) {
-    push @where_sale,     (invnumber => { ilike => '%' . $::form->{invnumber} . '%'});
-    push @where_purchase, (invnumber => { ilike => '%' . $::form->{invnumber} . '%'});
+    push @where_sale,     (invnumber => { ilike => like($::form->{invnumber})});
+    push @where_purchase, (invnumber => { ilike => like($::form->{invnumber})});
   }
 
   if ($::form->{amount}) {
@@ -287,13 +398,13 @@ sub action_ajax_add_list {
   }
 
   if ($::form->{vcnumber}) {
-    push @where_sale,     ('customer.customernumber' => { ilike => '%' . $::form->{vcnumber} . '%'});
-    push @where_purchase, ('vendor.vendornumber'     => { ilike => '%' . $::form->{vcnumber} . '%'});
+    push @where_sale,     ('customer.customernumber' => { ilike => like($::form->{vcnumber})});
+    push @where_purchase, ('vendor.vendornumber'     => { ilike => like($::form->{vcnumber})});
   }
 
   if ($::form->{vcname}) {
-    push @where_sale,     ('customer.name' => { ilike => '%' . $::form->{vcname} . '%'});
-    push @where_purchase, ('vendor.name'   => { ilike => '%' . $::form->{vcname} . '%'});
+    push @where_sale,     ('customer.name' => { ilike => like($::form->{vcname})});
+    push @where_purchase, ('vendor.name'   => { ilike => like($::form->{vcname})});
   }
 
   if ($::form->{transdatefrom}) {
@@ -313,7 +424,7 @@ sub action_ajax_add_list {
     };
   }
 
-  my $all_open_ar_invoices = SL::DB::Manager::Invoice->get_all(where => \@where_sale, with_objects => 'customer');
+  my $all_open_ar_invoices = SL::DB::Manager::Invoice        ->get_all(where => \@where_sale,     with_objects => 'customer');
   my $all_open_ap_invoices = SL::DB::Manager::PurchaseInvoice->get_all(where => \@where_purchase, with_objects => 'vendor');
 
   my @all_open_invoices = @{ $all_open_ar_invoices };
@@ -323,10 +434,10 @@ sub action_ajax_add_list {
   @all_open_invoices = sort { $a->id <=> $b->id } @all_open_invoices;
 
   my $output  = $self->render(
-      'bank_transactions/add_list',
-      { output      => 0 },
-      INVOICES => \@all_open_invoices,
-      );
+    'bank_transactions/add_list',
+    { output => 0 },
+    INVOICES => \@all_open_invoices,
+  );
 
   my %result = ( count => 0, html => $output );
 
@@ -338,98 +449,90 @@ sub action_ajax_accept_invoices {
 
   my @selected_invoices;
   foreach my $invoice_id (@{ $::form->{invoice_id} || [] }) {
-    my $invoice_object = SL::DB::Manager::Invoice->find_by(id => $invoice_id);
-    $invoice_object ||= SL::DB::Manager::PurchaseInvoice->find_by(id => $invoice_id);
-
+    my $invoice_object = SL::DB::Manager::Invoice->find_by(id => $invoice_id) || SL::DB::Manager::PurchaseInvoice->find_by(id => $invoice_id);
     push @selected_invoices, $invoice_object;
   }
 
-  $self->render('bank_transactions/invoices', { layout => 0 },
-                INVOICES => \@selected_invoices,
-                bt_id    => $::form->{bt_id} );
+  $self->render(
+    'bank_transactions/invoices',
+    { layout => 0 },
+    INVOICES => \@selected_invoices,
+    bt_id    => $::form->{bt_id},
+  );
 }
 
-sub action_save_invoices {
+sub save_invoices {
   my ($self) = @_;
 
-  my $invoice_hash = delete $::form->{invoice_ids}; # each key (the bt line with a bt_id) contains an array of invoice_ids
-  my $skonto_hash  = delete $::form->{invoice_skontos} || {}; # array containing the payment type, could be empty
+  return 0 if !$::form->{invoice_ids};
+
+  my %invoice_hash = %{ delete $::form->{invoice_ids} };  # each key (the bt line with a bt_id) contains an array of invoice_ids
+
+  # e.g. three partial payments with bt_ids 54, 55 and 56 for invoice with id 74:
+  # $invoice_hash = {
+  #         '55' => [
+  #                 '74'
+  #               ],
+  #         '54' => [
+  #                 '74'
+  #               ],
+  #         '56' => [
+  #                 '74'
+  #               ]
+  #       };
+  #
+  # or if the payment with bt_id 44 is used to pay invoices with ids 50, 51 and 52
+  # $invoice_hash = {
+  #           '44' => [ '50', '51', 52' ]
+  #         };
+
+  $::form->{invoice_skontos} ||= {}; # hash of arrays containing the payment types, could be empty
 
   # a bank_transaction may be assigned to several invoices, i.e. a customer
   # might pay several open invoices with one transaction
 
-  while ( my ($bt_id, $invoice_ids) = each(%$invoice_hash) ) {
-    my $bank_transaction = SL::DB::Manager::BankTransaction->find_by(id => $bt_id);
-    my $sign = $bank_transaction->amount < 0 ? -1 : 1;
-    my $amount_of_transaction = $sign * $bank_transaction->amount;
+  $self->problems([]);
 
-    my @invoices;
-    foreach my $invoice_id (@{ $invoice_ids }) {
-      push @invoices, (SL::DB::Manager::Invoice->find_by(id => $invoice_id) || SL::DB::Manager::PurchaseInvoice->find_by(id => $invoice_id));
-    }
-    @invoices = sort { return 1 if ($a->is_sales and $a->amount > 0);
-                          return 1 if (!$a->is_sales and $a->amount < 0);
-                          return -1; } @invoices                if $bank_transaction->amount > 0;
-    @invoices = sort { return -1 if ($a->is_sales and $a->amount > 0);
-                       return -1 if (!$a->is_sales and $a->amount < 0);
-                       return 1; } @invoices                    if $bank_transaction->amount < 0;
-
-    foreach my $invoice (@invoices) {
-
-      # Check if bank_transaction already has a link to the invoice, may only be linked once per invoice
-      # This might be caused by the user reloading a page and resending the form
-      die t8("Bank transaction with id #1 has already been linked to #2.", $bank_transaction->id, $invoice->displayable_name)
-        if _existing_record_link($bank_transaction, $invoice);
-
-      my $payment_type;
-      if ( defined $skonto_hash->{"$bt_id"} ) {
-        $payment_type = shift(@{ $skonto_hash->{"$bt_id"} });
-      } else {
-        $payment_type = 'without_skonto';
-      };
-      if ($amount_of_transaction == 0) {
-        flash('warning',  $::locale->text('There are invoices which could not be paid by bank transaction #1 (Account number: #2, bank code: #3)!',
-                                            $bank_transaction->purpose,
-                                            $bank_transaction->remote_account_number,
-                                            $bank_transaction->remote_bank_code));
-        last;
-      }
-      # pay invoice or go to the next bank transaction if the amount is not sufficiently high
-      if ($invoice->amount <= $amount_of_transaction) {
-        $invoice->pay_invoice(chart_id     => $bank_transaction->local_bank_account->chart_id,
-                              trans_id     => $invoice->id,
-                              amount       => $invoice->amount,
-                              payment_type => $payment_type,
-                              transdate    => $bank_transaction->transdate->to_kivitendo);
-        if ($invoice->is_sales) {
-          $amount_of_transaction -= $sign * $invoice->amount;
-          $bank_transaction->invoice_amount($bank_transaction->invoice_amount + $invoice->amount);
-        } else {
-          $amount_of_transaction += $sign * $invoice->amount if (!$invoice->is_sales);
-          $bank_transaction->invoice_amount($bank_transaction->invoice_amount - $invoice->amount);
-        }
-      } else {
-        $invoice->pay_invoice(chart_id     => $bank_transaction->local_bank_account->chart_id,
-                              trans_id     => $invoice->id,
-                              amount       => $amount_of_transaction,
-                              payment_type => $payment_type,
-                              transdate    => $bank_transaction->transdate->to_kivitendo);
-        $bank_transaction->invoice_amount($bank_transaction->amount) if $invoice->is_sales;
-        $bank_transaction->invoice_amount($bank_transaction->amount) if !$invoice->is_sales;
-        $amount_of_transaction = 0;
-      }
+  my $count = 0;
 
-      # Record a record link from the bank transaction to the invoice
-      my @props = (
-          from_table => 'bank_transactions',
-          from_id    => $bt_id,
-          to_table   => $invoice->is_sales ? 'ar' : 'ap',
-          to_id      => $invoice->id,
-          );
-
-      SL::DB::RecordLink->new(@props)->save;
+  if ( $::form->{proposal_ids} ) {
+    foreach (@{ $::form->{proposal_ids} }) {
+      my  $bank_transaction_id = $_;
+      my  $invoice_ids = $invoice_hash{$_};
+      push @{ $self->problems }, $self->save_single_bank_transaction(
+        bank_transaction_id => $bank_transaction_id,
+        invoice_ids         => $invoice_ids,
+        sources             => ($::form->{sources} // {})->{$_},
+        memos               => ($::form->{memos}   // {})->{$_},
+      );
+      $count += scalar( @{$invoice_ids} );
+    }
+  } else {
+    while ( my ($bank_transaction_id, $invoice_ids) = each(%invoice_hash) ) {
+      push @{ $self->problems }, $self->save_single_bank_transaction(
+        bank_transaction_id => $bank_transaction_id,
+        invoice_ids         => $invoice_ids,
+        sources             => [  map { $::form->{"sources_${bank_transaction_id}_${_}"} } @{ $invoice_ids } ],
+        memos               => [  map { $::form->{"memos_${bank_transaction_id}_${_}"}   } @{ $invoice_ids } ],
+      );
+      $count += scalar( @{$invoice_ids} );
     }
-    $bank_transaction->save;
+  }
+  my $max_count = $count;
+  foreach (@{ $self->problems }) {
+    $count-- if $_->{result} eq 'error';
+  }
+  return ($count, $max_count);
+}
+
+sub action_save_invoices {
+  my ($self) = @_;
+  my ($success_count, $max_count) = $self->save_invoices();
+
+  if ($success_count == $max_count) {
+    flash('ok', t8('#1 invoice(s) saved.', $success_count));
+  } else {
+    flash('error', t8('At least #1 invoice(s) not saved', $max_count - $success_count));
   }
 
   $self->action_list();
@@ -438,44 +541,302 @@ sub action_save_invoices {
 sub action_save_proposals {
   my ($self) = @_;
 
-  foreach my $bt_id (@{ $::form->{proposal_ids} }) {
-    my $bt = SL::DB::Manager::BankTransaction->find_by(id => $bt_id);
+  if ( $::form->{proposal_ids} ) {
+    my $propcount = scalar(@{ $::form->{proposal_ids} });
+    if ( $propcount > 0 ) {
+      my $count = $self->save_invoices();
 
-    my $arap = SL::DB::Manager::Invoice->find_by(id => $::form->{"proposed_invoice_$bt_id"});
-    $arap    = SL::DB::Manager::PurchaseInvoice->find_by(id => $::form->{"proposed_invoice_$bt_id"}) if not defined $arap;
+      flash('ok', t8('#1 proposal(s) with #2 invoice(s) saved.',  $propcount, $count));
+    }
+  }
+  $self->action_list();
 
-    # check for existing record_link for that $bt and $arap
-    # do this before any changes to $bt are made
-    die t8("Bank transaction with id #1 has already been linked to #2.", $bt->id, $arap->displayable_name)
-      if _existing_record_link($bt, $arap);
+}
 
-    #mark bt as booked
-    $bt->invoice_amount($bt->amount);
-    $bt->save;
+sub save_single_bank_transaction {
+  my ($self, %params) = @_;
 
-    #pay invoice
-    $arap->pay_invoice(chart_id  => $bt->local_bank_account->chart_id,
-                       trans_id  => $arap->id,
-                       amount    => $arap->amount,
-                       transdate => $bt->transdate->to_kivitendo);
-    $arap->save;
+  my %data = (
+    %params,
+    bank_transaction => SL::DB::Manager::BankTransaction->find_by(id => $params{bank_transaction_id}),
+    invoices         => [],
+  );
+
+  if (!$data{bank_transaction}) {
+    return {
+      %data,
+      result => 'error',
+      message => $::locale->text('The ID #1 is not a valid database ID.', $data{bank_transaction_id}),
+    };
+  }
+
+  my $bank_transaction = $data{bank_transaction};
+
+  if ($bank_transaction->closed_period) {
+    return {
+      %data,
+      result => 'error',
+      message => $::locale->text('Cannot post payment for a closed period!'),
+    };
+  }
+  my (@warnings);
+
+  my $worker = sub {
+    my $bt_id                 = $data{bank_transaction_id};
+    my $sign                  = $bank_transaction->amount < 0 ? -1 : 1;
+    my $payment_received      = $bank_transaction->amount > 0;
+    my $payment_sent          = $bank_transaction->amount < 0;
+
+
+    foreach my $invoice_id (@{ $params{invoice_ids} }) {
+      my $invoice = SL::DB::Manager::Invoice->find_by(id => $invoice_id) || SL::DB::Manager::PurchaseInvoice->find_by(id => $invoice_id);
+      if (!$invoice) {
+        return {
+          %data,
+          result  => 'error',
+          message => $::locale->text("The ID #1 is not a valid database ID.", $invoice_id),
+        };
+      }
+      push @{ $data{invoices} }, $invoice;
+    }
 
-    #create record link
-    my @props = (
+    if (   $payment_received
+        && any {    ( $_->is_sales && ($_->amount < 0))
+                 || (!$_->is_sales && ($_->amount > 0))
+               } @{ $data{invoices} }) {
+      return {
+        %data,
+        result  => 'error',
+        message => $::locale->text("Received payments can only be posted for sales invoices and purchase credit notes."),
+      };
+    }
+
+    if (   $payment_sent
+        && any {    ( $_->is_sales && ($_->amount > 0))
+                 || (!$_->is_sales && ($_->amount < 0) && ($_->invoice_type eq 'purchase_invoice'))
+               } @{ $data{invoices} }) {
+      return {
+        %data,
+        result  => 'error',
+        message => $::locale->text("Sent payments can only be posted for purchase invoices and sales credit notes."),
+      };
+    }
+
+    my $max_invoices = scalar(@{ $data{invoices} });
+    my $n_invoices   = 0;
+
+    foreach my $invoice (@{ $data{invoices} }) {
+      my $source = ($data{sources} // [])->[$n_invoices];
+      my $memo   = ($data{memos}   // [])->[$n_invoices];
+
+      $n_invoices++ ;
+      # safety check invoice open
+      croak("Invoice closed. Cannot proceed.") unless ($invoice->open_amount);
+
+      if (   ($payment_sent     && $bank_transaction->not_assigned_amount >= 0)
+          || ($payment_received && $bank_transaction->not_assigned_amount <= 0)) {
+        return {
+          %data,
+          result  => 'error',
+          message => $::locale->text("A payment can only be posted for multiple invoices if the amount to post is equal to or bigger than the sum of the open amounts of the affected invoices."),
+        };
+      }
+
+      my ($payment_type, $free_skonto_amount);
+      if ( defined $::form->{invoice_skontos}->{"$bt_id"} ) {
+        $payment_type = shift(@{ $::form->{invoice_skontos}->{"$bt_id"} });
+      } else {
+        $payment_type = 'without_skonto';
+      }
+
+      if ($payment_type eq 'free_skonto') {
+        # parse user input > 0
+        if ($::form->parse_amount(\%::myconfig, $::form->{"free_skonto_amount"}->{"$bt_id"}{$invoice->id}) > 0) {
+          $free_skonto_amount = $::form->parse_amount(\%::myconfig, $::form->{"free_skonto_amount"}->{"$bt_id"}{$invoice->id});
+        } else {
+          return {
+            %data,
+            result  => 'error',
+            message => $::locale->text("Free skonto amount has to be a positive number."),
+          };
+        }
+      }
+    # pay invoice
+    # TODO rewrite this: really booked amount should be a return value of Payment.pm
+    # also this controller shouldnt care about how to calc skonto. we simply delegate the
+    # payment_type to the helper and get the corresponding bank_transaction values back
+    # hotfix to get the signs right - compare absolute values and later set the signs
+    # should be better done elsewhere - changing not_assigned_amount to abs feels seriously bogus
+
+    my $open_amount = $payment_type eq 'with_skonto_pt' ? $invoice->amount_less_skonto : $invoice->open_amount;
+    $open_amount            = abs($open_amount);
+    $open_amount           -= $free_skonto_amount if ($payment_type eq 'free_skonto');
+    my $not_assigned_amount = abs($bank_transaction->not_assigned_amount);
+    my $amount_for_booking  = ($open_amount < $not_assigned_amount) ? $open_amount : $not_assigned_amount;
+    my $amount_for_payment  = $amount_for_booking;
+
+    # get the right direction for the payment bookings (all amounts < 0 are stornos, credit notes or negative ap)
+    $amount_for_payment *= -1 if $invoice->amount < 0;
+    $free_skonto_amount *= -1 if ($free_skonto_amount && $invoice->amount < 0);
+    # get the right direction for the bank transaction
+    $amount_for_booking *= $sign;
+
+    $bank_transaction->invoice_amount($bank_transaction->invoice_amount + $amount_for_booking);
+
+    # ... and then pay the invoice
+    my @acc_ids = $invoice->pay_invoice(chart_id => $bank_transaction->local_bank_account->chart_id,
+                          trans_id      => $invoice->id,
+                          amount        => $amount_for_payment,
+                          payment_type  => $payment_type,
+                          source        => $source,
+                          memo          => $memo,
+                          skonto_amount => $free_skonto_amount,
+                          bt_id         => $bt_id,
+                          transdate     => $bank_transaction->valutadate->to_kivitendo);
+    # ... and record the origin via BankTransactionAccTrans
+    if (scalar(@acc_ids) < 2) {
+      return {
+        %data,
+        result  => 'error',
+        message => $::locale->text("Unable to book transactions for bank purpose #1", $bank_transaction->purpose),
+      };
+    }
+    foreach my $acc_trans_id (@acc_ids) {
+        my $id_type = $invoice->is_sales ? 'ar' : 'ap';
+        my  %props_acc = (
+          acc_trans_id        => $acc_trans_id,
+          bank_transaction_id => $bank_transaction->id,
+          $id_type            => $invoice->id,
+        );
+        SL::DB::BankTransactionAccTrans->new(%props_acc)->save;
+    }
+      # Record a record link from the bank transaction to the invoice
+      my %props = (
         from_table => 'bank_transactions',
         from_id    => $bt_id,
-        to_table   => $arap->is_sales ? 'ar' : 'ap',
-        to_id      => $arap->id,
-        );
+        to_table   => $invoice->is_sales ? 'ar' : 'ap',
+        to_id      => $invoice->id,
+      );
+      SL::DB::RecordLink->new(%props)->save;
+
+      # "close" a sepa_export_item if it exists
+      # code duplicated in action_save_proposals!
+      # currently only works, if there is only exactly one open sepa_export_item
+      if ( my $seis = $invoice->find_sepa_export_items({ executed => 0 }) ) {
+        if ( scalar @$seis == 1 ) {
+          # moved the execution and the check for sepa_export into a method,
+          # this isn't part of a transaction, though
+          $seis->[0]->set_executed if $invoice->id == $seis->[0]->arap_id;
+        }
+      }
 
-    SL::DB::RecordLink->new(@props)->save;
-  }
+    }
+    $bank_transaction->save;
 
-  flash('ok', t8('#1 proposal(s) saved.', scalar @{ $::form->{proposal_ids} }));
+    # 'undef' means 'no error' here.
+    return undef;
+  };
 
-  $self->action_list();
+  my $error;
+  my $rez = $data{bank_transaction}->db->with_transaction(sub {
+    eval {
+      $error = $worker->();
+      1;
+
+    } or do {
+      $error = {
+        %data,
+        result  => 'error',
+        message => $@,
+      };
+    };
+
+    # Rollback Fehler nicht weiterreichen
+    # die if $error;
+    # aber einen rollback von hand
+    $::lxdebug->message(LXDebug->DEBUG2(),"finish worker with ". ($error ? $error->{result} : '-'));
+    $data{bank_transaction}->db->dbh->rollback if $error && $error->{result} eq 'error';
+  });
+
+  return grep { $_ } ($error, @warnings);
 }
+sub action_unlink_bank_transaction {
+  my ($self, %params) = @_;
+
+  croak("No bank transaction ids") unless scalar @{ $::form->{ids}} > 0;
+
+  my $success_count;
 
+  foreach my $bt_id (@{ $::form->{ids}} )  {
+
+    my $bank_transaction = SL::DB::Manager::BankTransaction->find_by(id => $bt_id);
+    croak("No valid bank transaction found") unless (ref($bank_transaction)  eq 'SL::DB::BankTransaction');
+    croak t8('Cannot unlink payment for a closed period!') if $bank_transaction->closed_period;
+
+    # everything in one transaction
+    my $rez = $bank_transaction->db->with_transaction(sub {
+      # 1. remove all reconciliations (due to underlying trigger, this has to be the first step)
+      my $rec_links = SL::DB::Manager::ReconciliationLink->get_all(where => [ bank_transaction_id => $bt_id ]);
+      $_->delete for @{ $rec_links };
+
+      my %trans_ids;
+      foreach my $acc_trans_id_entry (@{ SL::DB::Manager::BankTransactionAccTrans->get_all(where => [bank_transaction_id => $bt_id ] )}) {
+
+        my $acc_trans = SL::DB::Manager::AccTransaction->get_all(where => [acc_trans_id => $acc_trans_id_entry->acc_trans_id]);
+
+        # save trans_id and type
+        die "no type" unless ($acc_trans_id_entry->ar_id || $acc_trans_id_entry->ap_id || $acc_trans_id_entry->gl_id);
+        $trans_ids{$acc_trans_id_entry->ar_id} = 'ar' if $acc_trans_id_entry->ar_id;
+        $trans_ids{$acc_trans_id_entry->ap_id} = 'ap' if $acc_trans_id_entry->ap_id;
+        $trans_ids{$acc_trans_id_entry->gl_id} = 'gl' if $acc_trans_id_entry->gl_id;
+        # 2. all good -> ready to delete acc_trans and bt_acc link
+        $acc_trans_id_entry->delete;
+        $_->delete for @{ $acc_trans };
+      }
+      # 3. update arap.paid (may not be 0, yet)
+      #    or in case of gl, delete whole entry
+      while (my ($trans_id, $type) = each %trans_ids) {
+        if ($type eq 'gl') {
+          SL::DB::Manager::GLTransaction->delete_all(where => [ id => $trans_id ]);
+          next;
+        }
+        die ("invalid type") unless $type =~ m/^(ar|ap)$/;
+
+        # recalc and set paid via database query
+        my $query = qq|UPDATE $type SET paid =
+                        (SELECT COALESCE(abs(sum(amount)),0) FROM acc_trans
+                         WHERE trans_id = ?
+                         AND chart_link ilike '%paid%')
+                       WHERE id = ?|;
+
+        die if (do_query($::form, $bank_transaction->db->dbh, $query, $trans_id, $trans_id) == -1);
+      }
+      # 4. and delete all (if any) record links
+      my $rl = SL::DB::Manager::RecordLink->delete_all(where => [ from_id => $bt_id, from_table => 'bank_transactions' ]);
+
+      # 5. finally reset  this bank transaction
+      $bank_transaction->invoice_amount(0);
+      $bank_transaction->cleared(0);
+      $bank_transaction->save;
+      # 6. and add a log entry in history_erp
+      SL::DB::History->new(
+        trans_id    => $bank_transaction->id,
+        snumbers    => 'bank_transaction_unlink_' . $bank_transaction->id,
+        employee_id => SL::DB::Manager::Employee->current->id,
+        what_done   => 'bank_transaction',
+        addition    => 'UNLINKED',
+      )->save();
+
+      1;
+
+    }) || die t8('error while unlinking payment #1 : ', $bank_transaction->purpose) . $bank_transaction->db->error . "\n";
+
+    $success_count++;
+  }
+
+  flash('ok', t8('#1 bank transaction bookings undone.', $success_count));
+  $self->action_list_all() unless $params{testcase};
+}
 #
 # filters
 #
@@ -495,12 +856,13 @@ sub make_filter_summary {
   my @filter_strings;
 
   my @filters = (
-    [ $filter->{"transdate:date::ge"},  $::locale->text('Transdate')  . " " . $::locale->text('From Date') ],
-    [ $filter->{"transdate:date::le"},  $::locale->text('Transdate')  . " " . $::locale->text('To Date')   ],
-    [ $filter->{"valutadate:date::ge"}, $::locale->text('Valutadate') . " " . $::locale->text('From Date') ],
-    [ $filter->{"valutadate:date::le"}, $::locale->text('Valutadate') . " " . $::locale->text('To Date')   ],
-    [ $filter->{"amount:number"},       $::locale->text('Amount')                                          ],
-    [ $filter->{"bank_account_id:integer"}, $::locale->text('Local bank account')                          ],
+    [ $filter->{"transdate:date::ge"},      $::locale->text('Transdate')  . " " . $::locale->text('From Date') ],
+    [ $filter->{"transdate:date::le"},      $::locale->text('Transdate')  . " " . $::locale->text('To Date')   ],
+    [ $filter->{"valutadate:date::ge"},     $::locale->text('Valutadate') . " " . $::locale->text('From Date') ],
+    [ $filter->{"valutadate:date::le"},     $::locale->text('Valutadate') . " " . $::locale->text('To Date')   ],
+    [ $filter->{"amount:number"},           $::locale->text('Amount')                                          ],
+    [ $filter->{"bank_account_id:integer"}, $::locale->text('Local bank account')                              ],
+    [ $filter->{"remote_name:substr::ilike"}, $::locale->text('Remote name')                                   ],
   );
 
   for (@filters) {
@@ -518,25 +880,35 @@ sub prepare_report {
   my $report      = SL::ReportGenerator->new(\%::myconfig, $::form);
   $self->{report} = $report;
 
-  my @columns     = qw(local_bank_name transdate valudate remote_name remote_account_number remote_bank_code amount invoice_amount invoices currency purpose local_account_number local_bank_code id);
+  my @columns     = qw(ids local_bank_name transdate valudate remote_name remote_account_number remote_bank_code amount invoice_amount invoices currency purpose local_account_number local_bank_code id);
   my @sortable    = qw(local_bank_name transdate valudate remote_name remote_account_number remote_bank_code amount                                  purpose local_account_number local_bank_code);
 
   my %column_defs = (
-    transdate             => { sub => sub { $_[0]->transdate_as_date } },
-    valutadate            => { sub => sub { $_[0]->valutadate_as_date } },
+    ids                 => { raw_header_data => checkbox_tag("", id => "check_all", checkall  => "[data-checkall=1]"),
+                             'align'         => 'center',
+                             raw_data        => sub { if (@{ $_[0]->linked_invoices }) {
+                                                        if ($_[0]->closed_period) {
+                                                          html_tag('text', "X"); #, tooltip => t8('Bank Transaction is in a closed period.')),
+                                                        } else {
+                                                          checkbox_tag("ids[]", value => $_[0]->id, "data-checkall" => 1);
+                                                        }
+                                                } } },
+    transdate             => { sub   => sub { $_[0]->transdate_as_date } },
+    valutadate            => { sub   => sub { $_[0]->valutadate_as_date } },
     remote_name           => { },
     remote_account_number => { },
     remote_bank_code      => { },
-    amount                => { sub => sub { $_[0]->amount_as_number },
+    amount                => { sub   => sub { $_[0]->amount_as_number },
                                align => 'right' },
-    invoice_amount        => { sub => sub { $_[0]->invoice_amount_as_number },
+    invoice_amount        => { sub   => sub { $_[0]->invoice_amount_as_number },
                                align => 'right' },
-    invoices              => { sub => sub { $_[0]->linked_invoices } },
-    currency              => { sub => sub { $_[0]->currency->name } },
+    invoices              => { sub   => sub { my @invnumbers; for my $obj (@{ $_[0]->linked_invoices }) {
+                                                                next unless $obj; push @invnumbers, $obj->invnumber } return \@invnumbers } },
+    currency              => { sub   => sub { $_[0]->currency->name } },
     purpose               => { },
-    local_account_number  => { sub => sub { $_[0]->local_bank_account->account_number } },
-    local_bank_code       => { sub => sub { $_[0]->local_bank_account->bank_code } },
-    local_bank_name       => { sub => sub { $_[0]->local_bank_account->name } },
+    local_account_number  => { sub   => sub { $_[0]->local_bank_account->account_number } },
+    local_bank_code       => { sub   => sub { $_[0]->local_bank_account->bank_code } },
+    local_bank_name       => { sub   => sub { $_[0]->local_bank_account->name } },
     id                    => {},
   );
 
@@ -566,31 +938,19 @@ sub prepare_report {
   );
 }
 
-sub _existing_record_link {
-  my ($bt, $invoice) = @_;
-
-  # check whether a record link from banktransaction $bt already exists to
-  # invoice $invoice, returns 1 if that is the case
-
-  die unless $bt->isa("SL::DB::BankTransaction") && ( $invoice->isa("SL::DB::Invoice") || $invoice->isa("SL::DB::PurchaseInvoice") );
-
-  my $linked_record_to_table = $invoice->is_sales ? 'Invoice' : 'PurchaseInvoice';
-  my $linked_records = $bt->linked_records( direction => 'to', to => $linked_record_to_table, query => [ id => $invoice->id ]  );
-
-  return @$linked_records ? 1 : 0;
-};
-
+sub init_problems { [] }
 
 sub init_models {
   my ($self) = @_;
 
   SL::Controller::Helper::GetModels->new(
     controller => $self,
-    sorted => {
+    sorted     => {
       _default => {
-        by    => 'transdate',
-        dir   => 0,   # 1 = ASC, 0 = DESC : default sort is newest at top
+        by  => 'transdate',
+        dir => 0,   # 1 = ASC, 0 = DESC : default sort is newest at top
       },
+      id                    => t8('ID'),
       transdate             => t8('Transdate'),
       remote_name           => t8('Remote name'),
       amount                => t8('Amount'),
@@ -609,4 +969,177 @@ sub init_models {
   );
 }
 
+sub load_ap_record_template_url {
+  my ($self, $template) = @_;
+
+  return $self->url_for(
+    controller                           => 'ap.pl',
+    action                               => 'load_record_template',
+    id                                   => $template->id,
+    'form_defaults.amount_1'             => $::form->format_amount(\%::myconfig, -1 * $self->transaction->amount, 2),
+    'form_defaults.transdate'            => $self->transaction->transdate_as_date,
+    'form_defaults.duedate'              => $self->transaction->transdate_as_date,
+    'form_defaults.no_payment_bookings'  => 1,
+    'form_defaults.paid_1_suggestion'    => $::form->format_amount(\%::myconfig, -1 * $self->transaction->amount, 2),
+    'form_defaults.AP_paid_1_suggestion' => $self->transaction->local_bank_account->chart->accno,
+    'form_defaults.callback'             => $self->callback,
+    'form_defaults.notes'                => $self->convert_purpose_for_template($template, $self->transaction->purpose),
+  );
+}
+
+sub load_gl_record_template_url {
+  my ($self, $template) = @_;
+
+  return $self->url_for(
+    controller                           => 'gl.pl',
+    action                               => 'load_record_template',
+    id                                   => $template->id,
+    'form_defaults.amount_1'             => abs($self->transaction->not_assigned_amount), # always positive
+    'form_defaults.transdate'            => $self->transaction->transdate_as_date,
+    'form_defaults.callback'             => $self->callback,
+    'form_defaults.bt_id'                => $self->transaction->id,
+    'form_defaults.bt_chart_id'          => $self->transaction->local_bank_account->chart->id,
+    'form_defaults.description'          => $self->convert_purpose_for_template($template, $self->transaction->purpose),
+  );
+}
+
+sub convert_purpose_for_template {
+  my ($self, $template, $purpose) = @_;
+
+  # enter custom code here
+
+  return $purpose;
+}
+
+sub setup_search_action_bar {
+  my ($self, %params) = @_;
+
+  for my $bar ($::request->layout->get('actionbar')) {
+    $bar->add(
+      action => [
+        t8('Filter'),
+        submit    => [ '#search_form', { action => 'BankTransaction/list' } ],
+        accesskey => 'enter',
+      ],
+    );
+  }
+}
+
+sub setup_list_all_action_bar {
+  my ($self, %params) = @_;
+
+  for my $bar ($::request->layout->get('actionbar')) {
+    $bar->add(
+      combobox => [
+        action => [ t8('Actions') ],
+        action => [
+          t8('Unlink bank transactions'),
+            submit => [ '#form', { action => 'BankTransaction/unlink_bank_transaction' } ],
+            checks => [ [ 'kivi.check_if_entries_selected', '[name="ids[]"]' ] ],
+            disabled  => $::instance_conf->get_payments_changeable ? t8('Cannot safely unlink bank transactions, please set the posting configuration for payments to unchangeable.') : undef,
+          ],
+        ],
+        action => [
+          t8('Filter'),
+          submit    => [ '#filter_form', { action => 'BankTransaction/list_all' } ],
+        accesskey => 'enter',
+      ],
+    );
+  }
+}
+
 1;
+__END__
+
+=pod
+
+=encoding utf8
+
+=head1 NAME
+
+SL::Controller::BankTransaction - Posting payments to invoices from
+bank transactions imported earlier
+
+=head1 FUNCTIONS
+
+=over 4
+
+=item C<save_single_bank_transaction %params>
+
+Takes a bank transaction ID (as parameter C<bank_transaction_id> and
+tries to post its amount to a certain number of invoices (parameter
+C<invoice_ids>, an array ref of database IDs to purchase or sales
+invoice objects).
+
+This method handles already partly assigned bank transactions.
+
+This method cannot handle already partly assigned bank transactions, i.e.
+a bank transaction that has a invoice_amount <> 0 but not the fully
+transaction amount (invoice_amount == amount).
+
+If the amount of the bank transaction is higher than the sum of
+the assigned invoices (1 .. n) the bank transaction will only be
+partly assigned.
+
+The whole function is wrapped in a database transaction. If an
+exception occurs the bank transaction is not posted at all. The same
+is true if the code detects an error during the execution, e.g. a bank
+transaction that's already been posted earlier. In both cases the
+database transaction will be rolled back.
+
+If warnings but not errors occur the database transaction is still
+committed.
+
+The return value is an error object or C<undef> if the function
+succeeded. The calling function will collect all warnings and errors
+and display them in a nicely formatted table if any occurred.
+
+An error object is a hash reference containing the following members:
+
+=over 2
+
+=item * C<result> — can be either C<warning> or C<error>. Warnings are
+displayed slightly different than errors.
+
+=item * C<message> — a human-readable message included in the list of
+errors meant as the description of why the problem happened
+
+=item * C<bank_transaction_id>, C<invoice_ids> — the same parameters
+that the function was called with
+
+=item * C<bank_transaction> — the database object
+(C<SL::DB::BankTransaction>) corresponding to C<bank_transaction_id>
+
+=item * C<invoices> — an array ref of the database objects (either
+C<SL::DB::Invoice> or C<SL::DB::PurchaseInvoice>) corresponding to
+C<invoice_ids>
+
+=back
+
+=item C<action_unlink_bank_transaction>
+
+Takes one or more bank transaction ID (as parameter C<form::ids>) and
+tries to revert all payment bookings including already cleared bookings.
+
+This method won't undo payments that are in a closed period and assumes
+that payments are not manually changed, i.e. only imported payments.
+
+GL-records will be deleted completely if a bank transaction was the source.
+
+TODO: we still rely on linked_records for the check boxes
+
+=item C<convert_purpose_for_template>
+
+This method can be used to parse, filter and convert the bank transaction's
+purpose string before it will be assigned to the description field of a
+gl transaction or to the notes field of an ap transaction.
+You have to write your own custom code.
+
+=back
+
+=head1 AUTHOR
+
+Niclas Zimmermann E<lt>niclas@kivitendo-premium.deE<gt>,
+Geoffrey Richardson E<lt>information@richardson-bueren.deE<gt>
+
+=cut