+=item merge NEW_CUSTNUM [ , OPTION => VALUE ... ]
+
+This merges this customer into the provided new custnum, and then deletes the
+customer. If there is an error, returns the error, otherwise returns false.
+
+The source customer's name, company name, phone numbers, agent,
+referring customer, customer class, advertising source, order taker, and
+billing information (except balance) are discarded.
+
+All packages are moved to the target customer. Packages with package locations
+are preserved. Packages without package locations are moved to a new package
+location with the source customer's service/shipping address.
+
+All invoices, statements, payments, credits and refunds are moved to the target
+customer. The source customer's balance is added to the target customer.
+
+All notes, attachments, tickets and customer tags are moved to the target
+customer.
+
+Change history is not currently moved.
+
+=cut
+
+sub merge {
+ my( $self, $new_custnum, %opt ) = @_;
+
+ return "Can't merge a customer into self" if $self->custnum == $new_custnum;
+
+ my $new_cust_main = qsearchs( 'cust_main', { 'custnum' => $new_custnum } )
+ or return "Invalid new customer number: $new_custnum";
+
+ return 'Access denied: "Merge customer across agents" access right required to merge into a customer of a different agent'
+ if $self->agentnum != $new_cust_main->agentnum
+ && ! $FS::CurrentUser::CurrentUser->access_right('Merge customer across agents');
+
+ local $SIG{HUP} = 'IGNORE';
+ local $SIG{INT} = 'IGNORE';
+ local $SIG{QUIT} = 'IGNORE';
+ local $SIG{TERM} = 'IGNORE';
+ local $SIG{TSTP} = 'IGNORE';
+ local $SIG{PIPE} = 'IGNORE';
+
+ my $oldAutoCommit = $FS::UID::AutoCommit;
+ local $FS::UID::AutoCommit = 0;
+ my $dbh = dbh;
+
+ if ( qsearch('agent', { 'agent_custnum' => $self->custnum } ) ) {
+ $dbh->rollback if $oldAutoCommit;
+ return "Can't merge a master agent customer";
+ }
+
+ #use FS::access_user
+ if ( qsearch('access_user', { 'user_custnum' => $self->custnum } ) ) {
+ $dbh->rollback if $oldAutoCommit;
+ return "Can't merge a master employee customer";
+ }
+
+ if ( qsearch('cust_pay_pending', { 'custnum' => $self->custnum,
+ 'status' => { op=>'!=', value=>'done' },
+ }
+ )
+ ) {
+ $dbh->rollback if $oldAutoCommit;
+ return "Can't merge a customer with pending payments";
+ }
+
+ tie my %financial_tables, 'Tie::IxHash',
+ 'cust_bill' => 'invoices',
+ 'cust_bill_void' => 'voided invoices',
+ 'cust_statement' => 'statements',
+ 'cust_credit' => 'credits',
+ 'cust_pay' => 'payments',
+ 'cust_pay_void' => 'voided payments',
+ 'cust_refund' => 'refunds',
+ ;
+
+ foreach my $table ( keys %financial_tables ) {
+
+ my @records = $self->$table();
+
+ foreach my $record ( @records ) {
+ $record->custnum($new_custnum);
+ my $error = $record->replace;
+ if ( $error ) {
+ $dbh->rollback if $oldAutoCommit;
+ return "Error merging ". $financial_tables{$table}. ": $error\n";
+ }
+ }
+
+ }