Bug 35994: Add $biblio->acq_status

This allows you to see quickly if a biblio has linked orders or not.
And if they are all cancelled, or some still in processing, or some
are complete (and the rest cancelled).

Test plan:
Run t/db_dependent/Koha/Biblio.t

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Emily Lamancusa <emily.lamancusa@montgomerycountymd.gov>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>

Koha/Biblio.pm

@@ -158,6 +158,32 @@ sub uncancelled_orders {
     return $self->orders->filter_out_cancelled;
 }
 
+=head3 acq_status
+
+    print $biblio->acq_status;
+
+    This status can be:
+    - unlinked:   not any linked order found in the system
+    - acquired:   some lines are complete, rest is cancelled
+    - cancelled:  all lines are cancelled
+    - processing: some lines are active or new
+
+=cut
+
+sub acq_status {
+    my ($self) = @_;
+    my $orders = $self->orders;
+    unless ( $orders->count ) {
+        return 'unlinked';
+    } elsif ( !$self->uncancelled_orders->count ) {
+        return 'cancelled';
+    } elsif ( $orders->search( { orderstatus => [ 'new', 'ordered', 'partial' ] } )->count ) {
+        return 'processing';
+    } else {
+        return 'acquired';    # some lines must be complete here
+    }
+}
+
 =head3 tickets
 
   my $tickets = $biblio->tickets();

t/db_dependent/Koha/Biblio.t

@@ -942,9 +942,9 @@ subtest 'get_volumes_query' => sub {
     );
 };
 
-subtest 'orders() and uncancelled_orders() tests' => sub {
+subtest '->orders, ->uncancelled_orders and ->acq_status tests' => sub {
 
-    plan tests => 5;
+    plan tests => 9;
 
     $schema->storage->txn_begin;
 
@@ -965,8 +965,9 @@ subtest 'orders() and uncancelled_orders() tests' => sub {
             {
                 class => 'Koha::Acquisition::Orders',
                 value => {
-                    biblionumber => $biblio->biblionumber,
-                    datecancellationprinted => '2019-12-31'
+                    biblionumber            => $biblio->biblionumber,
+                    datecancellationprinted => '2019-12-31',
+                    orderstatus             => 'cancelled',
                 }
             }
         );
@@ -976,8 +977,11 @@ subtest 'orders() and uncancelled_orders() tests' => sub {
         {
             class => 'Koha::Acquisition::Orders',
             value => {
-                biblionumber => $biblio->biblionumber,
-                datecancellationprinted => undef
+                biblionumber            => $biblio->biblionumber,
+                datecancellationprinted => undef,
+                orderstatus             => 'ordered',
+                quantity                => 1,
+                quantityreceived        => 0,
             }
         }
     );
@@ -989,6 +993,15 @@ subtest 'orders() and uncancelled_orders() tests' => sub {
     is( ref($uncancelled_orders), 'Koha::Acquisition::Orders', 'Result type is correct' );
     is( $orders->count, $uncancelled_orders->count + 2,        '->uncancelled_orders->count returns the right count' );
 
+    # Check acq status
+    is( $biblio->acq_status, 'processing', 'Processing for presence of ordered lines' );
+    $orders->filter_by_active->update( { orderstatus => 'new' } );
+    is( $biblio->acq_status, 'processing', 'Still processing for presence of new lines' );
+    $orders->filter_out_cancelled->update( { orderstatus => 'complete' } );
+    is( $biblio->acq_status, 'acquired', 'Acquired: some complete, rest cancelled' );
+    $orders->cancel;
+    is( $biblio->acq_status, 'cancelled', 'Cancelled for only cancelled lines' );
+
     $schema->storage->txn_rollback;
 };