package FS::cust_pkg;

use strict;
use vars qw(@ISA $disable_agentcheck $DEBUG);
use Tie::IxHash;
use FS::UID qw( getotaker dbh );
use FS::Misc qw( send_email );
use FS::Record qw( qsearch qsearchs );
use FS::cust_main_Mixin;
use FS::cust_svc;
use FS::part_pkg;
use FS::cust_main;
use FS::type_pkgs;
use FS::pkg_svc;
use FS::cust_bill_pkg;
use FS::h_cust_svc;
use FS::reg_code;
use FS::part_svc;
use FS::cust_pkg_reason;
use FS::reason;

# need to 'use' these instead of 'require' in sub { cancel, suspend, unsuspend,
# setup }
# because they load configuration by setting FS::UID::callback (see TODO)
use FS::svc_acct;
use FS::svc_domain;
use FS::svc_www;
use FS::svc_forward;

# for sending cancel emails in sub cancel
use FS::Conf;

@ISA = qw( FS::cust_main_Mixin FS::option_Common FS::Record );

$DEBUG = 0;

$disable_agentcheck = 0;

sub _cache {
  my $self = shift;
  my ( $hashref, $cache ) = @_;
  #if ( $hashref->{'pkgpart'} ) {
  if ( $hashref->{'pkg'} ) {
    # #@{ $self->{'_pkgnum'} } = ();
    # my $subcache = $cache->subcache('pkgpart', 'part_pkg');
    # $self->{'_pkgpart'} = $subcache;
    # #push @{ $self->{'_pkgnum'} },
    #   FS::part_pkg->new_or_cached($hashref, $subcache);
    $self->{'_pkgpart'} = FS::part_pkg->new($hashref);
  }
  if ( exists $hashref->{'svcnum'} ) {
    #@{ $self->{'_pkgnum'} } = ();
    my $subcache = $cache->subcache('svcnum', 'cust_svc', $hashref->{pkgnum});
    $self->{'_svcnum'} = $subcache;
    #push @{ $self->{'_pkgnum'} },
    FS::cust_svc->new_or_cached($hashref, $subcache) if $hashref->{svcnum};
  }
}

=head1 NAME

FS::cust_pkg - Object methods for cust_pkg objects

=head1 SYNOPSIS

  use FS::cust_pkg;

  $record = new FS::cust_pkg \%hash;
  $record = new FS::cust_pkg { 'column' => 'value' };

  $error = $record->insert;

  $error = $new_record->replace($old_record);

  $error = $record->delete;

  $error = $record->check;

  $error = $record->cancel;

  $error = $record->suspend;

  $error = $record->unsuspend;

  $part_pkg = $record->part_pkg;

  @labels = $record->labels;

  $seconds = $record->seconds_since($timestamp);

  $error = FS::cust_pkg::order( $custnum, \@pkgparts );
  $error = FS::cust_pkg::order( $custnum, \@pkgparts, \@remove_pkgnums ] );

=head1 DESCRIPTION

An FS::cust_pkg object represents a customer billing item.  FS::cust_pkg
inherits from FS::Record.  The following fields are currently supported:

=over 4

=item pkgnum - primary key (assigned automatically for new billing items)

=item custnum - Customer (see L<FS::cust_main>)

=item pkgpart - Billing item definition (see L<FS::part_pkg>)

=item setup - date

=item bill - date (next bill date)

=item last_bill - last bill date

=item susp - date

=item expire - date

=item cancel - date

=item otaker - order taker (assigned automatically if null, see L<FS::UID>)

=item manual_flag - If this field is set to 1, disables the automatic
unsuspension of this package when using the B<unsuspendauto> config file.

=back

Note: setup, bill, susp, expire and cancel are specified as UNIX timestamps;
see L<perlfunc/"time">.  Also see L<Time::Local> and L<Date::Parse> for
conversion functions.

=head1 METHODS

=over 4

=item new HASHREF

Create a new billing item.  To add the item to the database, see L<"insert">.

=cut

sub table { 'cust_pkg'; }
sub cust_linked { $_[0]->cust_main_custnum; } 
sub cust_unlinked_msg {
  my $self = shift;
  "WARNING: can't find cust_main.custnum ". $self->custnum.
  ' (cust_pkg.pkgnum '. $self->pkgnum. ')';
}

=item insert [ OPTION => VALUE ... ]

Adds this billing item to the database ("Orders" the item).  If there is an
error, returns the error, otherwise returns false.

If the additional field I<promo_code> is defined instead of I<pkgpart>, it
will be used to look up the package definition and agent restrictions will be
ignored.

The following options are available: I<change>

I<change>, if set true, supresses any referral credit to a referring customer.

=cut

sub insert {
  my( $self, %options ) = @_;

  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;

  my $error = $self->SUPER::insert($options{options} ? %{$options{options}} : ());
  if ( $error ) {
    $dbh->rollback if $oldAutoCommit;
    return $error;
  }

  #if ( $self->reg_code ) {
  #  my $reg_code = qsearchs('reg_code', { 'code' => $self->reg_code } );
  #  $error = $reg_code->delete;
  #  if ( $error ) {
  #    $dbh->rollback if $oldAutoCommit;
  #    return $error;
  #  }
  #}

  my $conf = new FS::Conf;
  my $cust_main = $self->cust_main;
  my $part_pkg = $self->part_pkg;
  if ( $conf->exists('referral_credit')
       && $cust_main->referral_custnum
       && ! $options{'change'}
       && $part_pkg->freq !~ /^0\D?$/
     )
  {
    my $referring_cust_main = $cust_main->referring_cust_main;
    if ( $referring_cust_main->status ne 'cancelled' ) {
      my $error;
      if ( $part_pkg->freq !~ /^\d+$/ ) {
        warn 'WARNING: Not crediting customer '. $cust_main->referral_custnum.
             ' for package '. $self->pkgnum.
             ' ( customer '. $self->custnum. ')'.
             ' - One-time referral credits not (yet) available for '.
             ' packages with '. $part_pkg->freq_pretty. ' frequency';
      } else {

        my $amount = sprintf( "%.2f", $part_pkg->base_recur / $part_pkg->freq );
        my $error =
          $referring_cust_main->credit( $amount,
                                        'Referral credit for '. $cust_main->name
                                      );
        if ( $error ) {
          $dbh->rollback if $oldAutoCommit;
          return "Error crediting customer ". $cust_main->referral_custnum.
               " for referral: $error";
        }

      }

    }
  }

  $dbh->commit or die $dbh->errstr if $oldAutoCommit;
  '';

}

=item delete

This method now works but you probably shouldn't use it.

You don't want to delete billing items, because there would then be no record
the customer ever purchased the item.  Instead, see the cancel method.

=cut

#sub delete {
#  return "Can't delete cust_pkg records!";
#}

=item replace OLD_RECORD

Replaces the OLD_RECORD with this one in the database.  If there is an error,
returns the error, otherwise returns false.

Currently, custnum, setup, bill, susp, expire, and cancel may be changed.

Changing pkgpart may have disasterous effects.  See the order subroutine.

setup and bill are normally updated by calling the bill method of a customer
object (see L<FS::cust_main>).

suspend is normally updated by the suspend and unsuspend methods.

cancel is normally updated by the cancel method (and also the order subroutine
in some cases).

Calls 

=cut

sub replace {
  my( $new, $old, %options ) = @_;

  # We absolutely have to have an old vs. new record to make this work.
  if (!defined($old)) {
    $old = qsearchs( 'cust_pkg', { 'pkgnum' => $new->pkgnum } );
  }
  #return "Can't (yet?) change pkgpart!" if $old->pkgpart != $new->pkgpart;
  return "Can't change otaker!" if $old->otaker ne $new->otaker;

  #allow this *sigh*
  #return "Can't change setup once it exists!"
  #  if $old->getfield('setup') &&
  #     $old->getfield('setup') != $new->getfield('setup');

  #some logic for bill, susp, cancel?

  local($disable_agentcheck) = 1 if $old->pkgpart == $new->pkgpart;

  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 ($options{'reason'} && $new->expire && $old->expire ne $new->expire) {
    my $error = $new->insert_reason( 'reason' => $options{'reason'},
                                     'date'      => $new->expire,
		                    );
    if ( $error ) {
      dbh->rollback if $oldAutoCommit;
      return "Error inserting cust_pkg_reason: $error";
    }
  }

  #save off and freeze RADIUS attributes for any associated svc_acct records
  my @svc_acct = ();
  if ( $old->part_pkg->is_prepaid || $new->part_pkg->is_prepaid ) {

                #also check for specific exports?
                # to avoid spurious modify export events
    @svc_acct = map  { $_->svc_x }
                grep { $_->part_svc->svcdb eq 'svc_acct' }
                     $old->cust_svc;

    $_->snapshot foreach @svc_acct;

  }

  my $error = $new->SUPER::replace($old,
                                   $options{options} ? ${options{options}} : ()
                                  );
  if ( $error ) {
    $dbh->rollback if $oldAutoCommit;
    return $error;
  }

  #for prepaid packages,
  #trigger export of new RADIUS Expiration attribute when cust_pkg.bill changes
  foreach my $old_svc_acct ( @svc_acct ) {
    my $new_svc_acct = new FS::svc_acct { $old_svc_acct->hash };
    my $s_error = $new_svc_acct->replace($old_svc_acct);
    if ( $s_error ) {
      $dbh->rollback if $oldAutoCommit;
      return $s_error;
    }
  }

  $dbh->commit or die $dbh->errstr if $oldAutoCommit;
  '';

}

=item check

Checks all fields to make sure this is a valid billing item.  If there is an
error, returns the error, otherwise returns false.  Called by the insert and
replace methods.

=cut

sub check {
  my $self = shift;

  my $error = 
    $self->ut_numbern('pkgnum')
    || $self->ut_foreign_key('custnum', 'cust_main', 'custnum')
    || $self->ut_numbern('pkgpart')
    || $self->ut_numbern('setup')
    || $self->ut_numbern('bill')
    || $self->ut_numbern('susp')
    || $self->ut_numbern('cancel')
  ;
  return $error if $error;

  if ( $self->reg_code ) {

    unless ( grep { $self->pkgpart == $_->pkgpart }
             map  { $_->reg_code_pkg }
             qsearchs( 'reg_code', { 'code'     => $self->reg_code,
                                     'agentnum' => $self->cust_main->agentnum })
           ) {
      return "Unknown registration code";
    }

  } elsif ( $self->promo_code ) {

    my $promo_part_pkg =
      qsearchs('part_pkg', {
        'pkgpart'    => $self->pkgpart,
        'promo_code' => { op=>'ILIKE', value=>$self->promo_code },
      } );
    return 'Unknown promotional code' unless $promo_part_pkg;

  } else { 

    unless ( $disable_agentcheck ) {
      my $agent =
        qsearchs( 'agent', { 'agentnum' => $self->cust_main->agentnum } );
      my $pkgpart_href = $agent->pkgpart_hashref;
      return "agent ". $agent->agentnum.
             " can't purchase pkgpart ". $self->pkgpart
        unless $pkgpart_href->{ $self->pkgpart };
    }

    $error = $self->ut_foreign_key('pkgpart', 'part_pkg', 'pkgpart' );
    return $error if $error;

  }

  $self->otaker(getotaker) unless $self->otaker;
  $self->otaker =~ /^([\w\.\-]{0,16})$/ or return "Illegal otaker";
  $self->otaker($1);

  if ( $self->dbdef_table->column('manual_flag') ) {
    $self->manual_flag('') if $self->manual_flag eq ' ';
    $self->manual_flag =~ /^([01]?)$/
      or return "Illegal manual_flag ". $self->manual_flag;
    $self->manual_flag($1);
  }

  $self->SUPER::check;
}

=item cancel [ OPTION => VALUE ... ]

Cancels and removes all services (see L<FS::cust_svc> and L<FS::part_svc>)
in this package, then cancels the package itself (sets the cancel field to
now).

Available options are: I<quiet>

I<quiet> can be set true to supress email cancellation notices.

If there is an error, returns the error, otherwise returns false.

=cut

sub cancel {
  my( $self, %options ) = @_;
  my $error;

  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 ($options{'reason'}) {
    $error = $self->insert_reason( 'reason' => $options{'reason'} );
    if ( $error ) {
      dbh->rollback if $oldAutoCommit;
      return "Error inserting cust_pkg_reason: $error";
    }
  }

  my %svc;
  foreach my $cust_svc (
    #schwartz
    map  { $_->[0] }
    sort { $a->[1] <=> $b->[1] }
    map  { [ $_, $_->svc_x->table_info->{'cancel_weight'} ]; }
    qsearch( 'cust_svc', { 'pkgnum' => $self->pkgnum } )
  ) {

    my $error = $cust_svc->cancel;

    if ( $error ) {
      $dbh->rollback if $oldAutoCommit;
      return "Error cancelling cust_svc: $error";
    }
  }

  # Add a credit for remaining service
  my $remaining_value = $self->calc_remain();
  if ( $remaining_value > 0 ) {
    my $error = $self->cust_main->credit(
      $remaining_value,
      'Credit for unused time on '. $self->part_pkg->pkg,
    );
    if ($error) {
      $dbh->rollback if $oldAutoCommit;
      return "Error crediting customer \$$remaining_value for unused time on".
             $self->part_pkg->pkg. ": $error";
    }                                                                          
  }                                                                            

  unless ( $self->getfield('cancel') ) {
    my %hash = $self->hash;
    $hash{'cancel'} = time;
    my $new = new FS::cust_pkg ( \%hash );
    $error = $new->replace( $self, options => { $self->options } );
    if ( $error ) {
      $dbh->rollback if $oldAutoCommit;
      return $error;
    }
  }

  $dbh->commit or die $dbh->errstr if $oldAutoCommit;

  my $conf = new FS::Conf;
  my @invoicing_list = grep { $_ !~ /^(POST|FAX)$/ } $self->cust_main->invoicing_list;
  if ( !$options{'quiet'} && $conf->exists('emailcancel') && @invoicing_list ) {
    my $conf = new FS::Conf;
    my $error = send_email(
      'from'    => $conf->config('invoice_from'),
      'to'      => \@invoicing_list,
      'subject' => $conf->config('cancelsubject'),
      'body'    => [ map "$_\n", $conf->config('cancelmessage') ],
    );
    #should this do something on errors?
  }

  ''; #no errors

}

=item suspend

Suspends all services (see L<FS::cust_svc> and L<FS::part_svc>) in this
package, then suspends the package itself (sets the susp field to now).

If there is an error, returns the error, otherwise returns false.

=cut

sub suspend {
  my( $self, %options ) = @_;
  my $error ;

  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 ($options{'reason'}) {
    $error = $self->insert_reason( 'reason' => $options{'reason'} );
    if ( $error ) {
      dbh->rollback if $oldAutoCommit;
      return "Error inserting cust_pkg_reason: $error";
    }
  }

  foreach my $cust_svc (
    qsearch( 'cust_svc', { 'pkgnum' => $self->pkgnum } )
  ) {
    my $part_svc = qsearchs( 'part_svc', { 'svcpart' => $cust_svc->svcpart } );

    $part_svc->svcdb =~ /^([\w\-]+)$/ or do {
      $dbh->rollback if $oldAutoCommit;
      return "Illegal svcdb value in part_svc!";
    };
    my $svcdb = $1;
    require "FS/$svcdb.pm";

    my $svc = qsearchs( $svcdb, { 'svcnum' => $cust_svc->svcnum } );
    if ($svc) {
      $error = $svc->suspend;
      if ( $error ) {
        $dbh->rollback if $oldAutoCommit;
        return $error;
      }
    }

  }

  unless ( $self->getfield('susp') ) {
    my %hash = $self->hash;
    $hash{'susp'} = time;
    my $new = new FS::cust_pkg ( \%hash );
    $error = $new->replace( $self, options => { $self->options } );
    if ( $error ) {
      $dbh->rollback if $oldAutoCommit;
      return $error;
    }
  }

  $dbh->commit or die $dbh->errstr if $oldAutoCommit;

  ''; #no errors
}

=item unsuspend [ OPTION => VALUE ... ]

Unsuspends all services (see L<FS::cust_svc> and L<FS::part_svc>) in this
package, then unsuspends the package itself (clears the susp field).

Available options are: I<adjust_next_bill>.

I<adjust_next_bill> can be set true to adjust the next bill date forward by
the amount of time the account was inactive.  This was set true by default
since 1.4.2 and 1.5.0pre6; however, starting with 1.7.0 this needs to be
explicitly requested.  Price plans for which this makes sense (anniversary-date
based than prorate or subscription) could have an option to enable this
behaviour?

If there is an error, returns the error, otherwise returns false.

=cut

sub unsuspend {
  my( $self, %opt ) = @_;
  my $error;

  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;

  foreach my $cust_svc (
    qsearch('cust_svc',{'pkgnum'=> $self->pkgnum } )
  ) {
    my $part_svc = qsearchs( 'part_svc', { 'svcpart' => $cust_svc->svcpart } );

    $part_svc->svcdb =~ /^([\w\-]+)$/ or do {
      $dbh->rollback if $oldAutoCommit;
      return "Illegal svcdb value in part_svc!";
    };
    my $svcdb = $1;
    require "FS/$svcdb.pm";

    my $svc = qsearchs( $svcdb, { 'svcnum' => $cust_svc->svcnum } );
    if ($svc) {
      $error = $svc->unsuspend;
      if ( $error ) {
        $dbh->rollback if $oldAutoCommit;
        return $error;
      }
    }

  }

  unless ( ! $self->getfield('susp') ) {
    my %hash = $self->hash;
    my $inactive = time - $hash{'susp'};

    my $conf = new FS::Conf;

    $hash{'bill'} = ( $hash{'bill'} || $hash{'setup'} ) + $inactive
      if ( $opt{'adjust_next_bill'}
           || $conf->config('unsuspend-always_adjust_next_bill_date') )
      && $inactive > 0 && ( $hash{'bill'} || $hash{'setup'} );

    $hash{'susp'} = '';
    my $new = new FS::cust_pkg ( \%hash );
    $error = $new->replace( $self, options => { $self->options } );
    if ( $error ) {
      $dbh->rollback if $oldAutoCommit;
      return $error;
    }
  }

  $dbh->commit or die $dbh->errstr if $oldAutoCommit;

  ''; #no errors
}

=item last_bill

Returns the last bill date, or if there is no last bill date, the setup date.
Useful for billing metered services.

=cut

sub last_bill {
  my $self = shift;
  if ( $self->dbdef_table->column('last_bill') ) {
    return $self->setfield('last_bill', $_[0]) if @_;
    return $self->getfield('last_bill') if $self->getfield('last_bill');
  }    
  my $cust_bill_pkg = qsearchs('cust_bill_pkg', { 'pkgnum' => $self->pkgnum,
                                                  'edate'  => $self->bill,  } );
  $cust_bill_pkg ? $cust_bill_pkg->sdate : $self->setup || 0;
}

=item last_reason

Returns the most recent FS::reason associated with the package.

=cut

sub last_reason {
  my $self = shift;
  my $cust_pkg_reason = qsearchs( {
                                    'table' => 'cust_pkg_reason',
				    'hashref' => { 'pkgnum' => $self->pkgnum, },
				    'extra_sql'=> 'ORDER BY date DESC',
				  } );
  qsearchs ( 'reason', { 'reasonnum' => $cust_pkg_reason->reasonnum } )
    if $cust_pkg_reason;
}

=item part_pkg

Returns the definition for this billing item, as an FS::part_pkg object (see
L<FS::part_pkg>).

=cut

sub part_pkg {
  my $self = shift;
  #exists( $self->{'_pkgpart'} )
  $self->{'_pkgpart'}
    ? $self->{'_pkgpart'}
    : qsearchs( 'part_pkg', { 'pkgpart' => $self->pkgpart } );
}

=item calc_setup

Calls the I<calc_setup> of the FS::part_pkg object associated with this billing
item.

=cut

sub calc_setup {
  my $self = shift;
  $self->part_pkg->calc_setup($self, @_);
}

=item calc_recur

Calls the I<calc_recur> of the FS::part_pkg object associated with this billing
item.

=cut

sub calc_recur {
  my $self = shift;
  $self->part_pkg->calc_recur($self, @_);
}

=item calc_remain

Calls the I<calc_remain> of the FS::part_pkg object associated with this
billing item.

=cut

sub calc_remain {
  my $self = shift;
  $self->part_pkg->calc_remain($self, @_);
}

=item calc_cancel

Calls the I<calc_cancel> of the FS::part_pkg object associated with this
billing item.

=cut

sub calc_cancel {
  my $self = shift;
  $self->part_pkg->calc_cancel($self, @_);
}

=item cust_bill_pkg

Returns any invoice line items for this package (see L<FS::cust_bill_pkg>).

=cut

sub cust_bill_pkg {
  my $self = shift;
  qsearch( 'cust_bill_pkg', { 'pkgnum' => $self->pkgnum } );
}

=item cust_svc [ SVCPART ]

Returns the services for this package, as FS::cust_svc objects (see
L<FS::cust_svc>).  If a svcpart is specified, return only the matching
services.

=cut

sub cust_svc {
  my $self = shift;

  if ( @_ ) {
    return qsearch( 'cust_svc', { 'pkgnum'  => $self->pkgnum,
                                  'svcpart' => shift,          } );
  }

  #if ( $self->{'_svcnum'} ) {
  #  values %{ $self->{'_svcnum'}->cache };
  #} else {
    $self->_sort_cust_svc(
      [ qsearch( 'cust_svc', { 'pkgnum' => $self->pkgnum } ) ]
    );
  #}

}

=item h_cust_svc END_TIMESTAMP [ START_TIMESTAMP ] 

Returns historical services for this package created before END TIMESTAMP and
(optionally) not cancelled before START_TIMESTAMP, as FS::h_cust_svc objects
(see L<FS::h_cust_svc>).

=cut

sub h_cust_svc {
  my $self = shift;

  $self->_sort_cust_svc(
    [ qsearch( 'h_cust_svc',
               { 'pkgnum' => $self->pkgnum, },
               FS::h_cust_svc->sql_h_search(@_),
             )
    ]
  );
}

sub _sort_cust_svc {
  my( $self, $arrayref ) = @_;

  map  { $_->[0] }
  sort { $b->[1] cmp $a->[1]  or  $a->[2] <=> $b->[2] } 
  map {
        my $pkg_svc = qsearchs( 'pkg_svc', { 'pkgpart' => $self->pkgpart,
                                             'svcpart' => $_->svcpart     } );
        [ $_,
          $pkg_svc ? $pkg_svc->primary_svc : '',
          $pkg_svc ? $pkg_svc->quantity : 0,
        ];
      }
  @$arrayref;

}

=item num_cust_svc [ SVCPART ]

Returns the number of provisioned services for this package.  If a svcpart is
specified, counts only the matching services.

=cut

sub num_cust_svc {
  my $self = shift;
  my $sql = 'SELECT COUNT(*) FROM cust_svc WHERE pkgnum = ?';
  $sql .= ' AND svcpart = ?' if @_;
  my $sth = dbh->prepare($sql) or die dbh->errstr;
  $sth->execute($self->pkgnum, @_) or die $sth->errstr;
  $sth->fetchrow_arrayref->[0];
}

=item available_part_svc 

Returns a list of FS::part_svc objects representing services included in this
package but not yet provisioned.  Each FS::part_svc object also has an extra
field, I<num_avail>, which specifies the number of available services.

=cut

sub available_part_svc {
  my $self = shift;
  grep { $_->num_avail > 0 }
    map {
          my $part_svc = $_->part_svc;
          $part_svc->{'Hash'}{'num_avail'} = #evil encapsulation-breaking
            $_->quantity - $self->num_cust_svc($_->svcpart);
          $part_svc;
        }
      $self->part_pkg->pkg_svc;
}

=item 

Returns a list of FS::part_svc objects representing provisioned and available
services included in this package.  Each FS::part_svc object also has the
following extra fields:

=over 4

=item num_cust_svc  (count)

=item num_avail     (quantity - count)

=item cust_pkg_svc (services) - array reference containing the provisioned services, as cust_svc objects

svcnum
label -> ($cust_svc->label)[1]

=back

=cut

sub part_svc {
  my $self = shift;

  #XXX some sort of sort order besides numeric by svcpart...
  my @part_svc = sort { $a->svcpart <=> $b->svcpart } map {
    my $pkg_svc = $_;
    my $part_svc = $pkg_svc->part_svc;
    my $num_cust_svc = $self->num_cust_svc($part_svc->svcpart);
    $part_svc->{'Hash'}{'num_cust_svc'} = $num_cust_svc; #more evil
    $part_svc->{'Hash'}{'num_avail'}    = $pkg_svc->quantity - $num_cust_svc;
    $part_svc->{'Hash'}{'cust_pkg_svc'} = [ $self->cust_svc($part_svc->svcpart) ];
    $part_svc;
  } $self->part_pkg->pkg_svc;

  #extras
  push @part_svc, map {
    my $part_svc = $_;
    my $num_cust_svc = $self->num_cust_svc($part_svc->svcpart);
    $part_svc->{'Hash'}{'num_cust_svc'} = $num_cust_svc; #speak no evail
    $part_svc->{'Hash'}{'num_avail'}    = 0; #0-$num_cust_svc ?
    $part_svc->{'Hash'}{'cust_pkg_svc'} = [ $self->cust_svc($part_svc->svcpart) ];
    $part_svc;
  } $self->extra_part_svc;

  @part_svc;

}

=item extra_part_svc

Returns a list of FS::part_svc objects corresponding to services in this
package which are still provisioned but not (any longer) available in the
package definition.

=cut

sub extra_part_svc {
  my $self = shift;

  my $pkgnum  = $self->pkgnum;
  my $pkgpart = $self->pkgpart;

  qsearch( {
    'table'     => 'part_svc',
    'hashref'   => {},
    'extra_sql' => "WHERE 0 = ( SELECT COUNT(*) FROM pkg_svc 
                                  WHERE pkg_svc.svcpart = part_svc.svcpart 
				    AND pkg_svc.pkgpart = $pkgpart
				    AND quantity > 0 
			      )
	              AND 0 < ( SELECT count(*)
		                  FROM cust_svc
		                    LEFT JOIN cust_pkg using ( pkgnum )
				  WHERE cust_svc.svcpart = part_svc.svcpart
				    AND pkgnum = $pkgnum
			      )",
  } );
}

=item status

Returns a short status string for this package, currently:

=over 4

=item not yet billed

=item one-time charge

=item active

=item suspended

=item cancelled

=back

=cut

sub status {
  my $self = shift;

  my $freq = length($self->freq) ? $self->freq : $self->part_pkg->freq;

  return 'cancelled' if $self->get('cancel');
  return 'suspended' if $self->susp;
  return 'not yet billed' unless $self->setup;
  return 'one-time charge' if $freq =~ /^(0|$)/;
  return 'active';
}

=item statuses

Class method that returns the list of possible status strings for pacakges
(see L<the status method|/status>).  For example:

  @statuses = FS::cust_pkg->statuses();

=cut

tie my %statuscolor, 'Tie::IxHash', 
  'not yet billed'  => '000000',
  'one-time charge' => '000000',
  'active'          => '00CC00',
  'suspended'       => 'FF9900',
  'cancelled'       => 'FF0000',
;

sub statuses {
  my $self = shift; #could be class...
  grep { $_ !~ /^(not yet billed)$/ } #this is a dumb status anyway
                                      # mayble split btw one-time vs. recur
    keys %statuscolor;
}

=item statuscolor

Returns a hex triplet color string for this package's status.

=cut

sub statuscolor {
  my $self = shift;
  $statuscolor{$self->status};
}

=item labels

Returns a list of lists, calling the label method for all services
(see L<FS::cust_svc>) of this billing item.

=cut

sub labels {
  my $self = shift;
  map { [ $_->label ] } $self->cust_svc;
}

=item h_labels END_TIMESTAMP [ START_TIMESTAMP ] 

Like the labels method, but returns historical information on services that
were active as of END_TIMESTAMP and (optionally) not cancelled before
START_TIMESTAMP.

Returns a list of lists, calling the label method for all (historical) services
(see L<FS::h_cust_svc>) of this billing item.

=cut

sub h_labels {
  my $self = shift;
  map { [ $_->label(@_) ] } $self->h_cust_svc(@_);
}

=item h_labels_short END_TIMESTAMP [ START_TIMESTAMP ]

Like h_labels, except returns a simple flat list, and shortens long 
(currently >5) lists of identical services to one line that lists the service
label and the number of individual services rather than individual items.

=cut

sub h_labels_short {
  my $self = shift;

  my %labels;
  #tie %labels, 'Tie::IxHash';
  push @{ $labels{$_->[0]} }, $_->[1]
    foreach $self->h_labels(@_);
  my @labels;
  foreach my $label ( keys %labels ) {
    my @values = @{ $labels{$label} };
    my $num = scalar(@values);
    if ( $num > 5 ) {
      push @labels, "$label ($num)";
    } else {
      push @labels, map { "$label: $_" } @values;
    }
  }

 @labels;

}

=item cust_main

Returns the parent customer object (see L<FS::cust_main>).

=cut

sub cust_main {
  my $self = shift;
  qsearchs( 'cust_main', { 'custnum' => $self->custnum } );
}

=item seconds_since TIMESTAMP

Returns the number of seconds all accounts (see L<FS::svc_acct>) in this
package have been online since TIMESTAMP, according to the session monitor.

TIMESTAMP is specified as a UNIX timestamp; see L<perlfunc/"time">.  Also see
L<Time::Local> and L<Date::Parse> for conversion functions.

=cut

sub seconds_since {
  my($self, $since) = @_;
  my $seconds = 0;

  foreach my $cust_svc (
    grep { $_->part_svc->svcdb eq 'svc_acct' } $self->cust_svc
  ) {
    $seconds += $cust_svc->seconds_since($since);
  }

  $seconds;

}

=item seconds_since_sqlradacct TIMESTAMP_START TIMESTAMP_END

Returns the numbers of seconds all accounts (see L<FS::svc_acct>) in this
package have been online between TIMESTAMP_START (inclusive) and TIMESTAMP_END
(exclusive).

TIMESTAMP_START and TIMESTAMP_END are specified as UNIX timestamps; see
L<perlfunc/"time">.  Also see L<Time::Local> and L<Date::Parse> for conversion
functions.


=cut

sub seconds_since_sqlradacct {
  my($self, $start, $end) = @_;

  my $seconds = 0;

  foreach my $cust_svc (
    grep {
      my $part_svc = $_->part_svc;
      $part_svc->svcdb eq 'svc_acct'
        && scalar($part_svc->part_export('sqlradius'));
    } $self->cust_svc
  ) {
    $seconds += $cust_svc->seconds_since_sqlradacct($start, $end);
  }

  $seconds;

}

=item attribute_since_sqlradacct TIMESTAMP_START TIMESTAMP_END ATTRIBUTE

Returns the sum of the given attribute for all accounts (see L<FS::svc_acct>)
in this package for sessions ending between TIMESTAMP_START (inclusive) and
TIMESTAMP_END
(exclusive).

TIMESTAMP_START and TIMESTAMP_END are specified as UNIX timestamps; see
L<perlfunc/"time">.  Also see L<Time::Local> and L<Date::Parse> for conversion
functions.

=cut

sub attribute_since_sqlradacct {
  my($self, $start, $end, $attrib) = @_;

  my $sum = 0;

  foreach my $cust_svc (
    grep {
      my $part_svc = $_->part_svc;
      $part_svc->svcdb eq 'svc_acct'
        && scalar($part_svc->part_export('sqlradius'));
    } $self->cust_svc
  ) {
    $sum += $cust_svc->attribute_since_sqlradacct($start, $end, $attrib);
  }

  $sum;

}

=item transfer DEST_PKGNUM | DEST_CUST_PKG, [ OPTION => VALUE ... ]

Transfers as many services as possible from this package to another package.

The destination package can be specified by pkgnum by passing an FS::cust_pkg
object.  The destination package must already exist.

Services are moved only if the destination allows services with the correct
I<svcpart> (not svcdb), unless the B<change_svcpart> option is set true.  Use
this option with caution!  No provision is made for export differences
between the old and new service definitions.  Probably only should be used
when your exports for all service definitions of a given svcdb are identical.
(attempt a transfer without it first, to move all possible svcpart-matching
services)

Any services that can't be moved remain in the original package.

Returns an error, if there is one; otherwise, returns the number of services 
that couldn't be moved.

=cut

sub transfer {
  my ($self, $dest_pkgnum, %opt) = @_;

  my $remaining = 0;
  my $dest;
  my %target;

  if (ref ($dest_pkgnum) eq 'FS::cust_pkg') {
    $dest = $dest_pkgnum;
    $dest_pkgnum = $dest->pkgnum;
  } else {
    $dest = qsearchs('cust_pkg', { pkgnum => $dest_pkgnum });
  }

  return ('Package does not exist: '.$dest_pkgnum) unless $dest;

  foreach my $pkg_svc ( $dest->part_pkg->pkg_svc ) {
    $target{$pkg_svc->svcpart} = $pkg_svc->quantity;
  }

  foreach my $cust_svc ($dest->cust_svc) {
    $target{$cust_svc->svcpart}--;
  }

  my %svcpart2svcparts = ();
  if ( exists $opt{'change_svcpart'} && $opt{'change_svcpart'} ) {
    warn "change_svcpart option received, creating alternates list\n" if $DEBUG;
    foreach my $svcpart ( map { $_->svcpart } $self->cust_svc ) {
      next if exists $svcpart2svcparts{$svcpart};
      my $part_svc = qsearchs('part_svc', { 'svcpart' => $svcpart } );
      $svcpart2svcparts{$svcpart} = [
        map  { $_->[0] }
        sort { $b->[1] cmp $a->[1]  or  $a->[2] <=> $b->[2] } 
        map {
              my $pkg_svc = qsearchs( 'pkg_svc', { 'pkgpart' => $dest->pkgpart,
                                                   'svcpart' => $_          } );
              [ $_,
                $pkg_svc ? $pkg_svc->primary_svc : '',
                $pkg_svc ? $pkg_svc->quantity : 0,
              ];
            }

        grep { $_ != $svcpart }
        map  { $_->svcpart }
        qsearch('part_svc', { 'svcdb' => $part_svc->svcdb } )
      ];
      warn "alternates for svcpart $svcpart: ".
           join(', ', @{$svcpart2svcparts{$svcpart}}). "\n"
        if $DEBUG;
    }
  }

  foreach my $cust_svc ($self->cust_svc) {
    if($target{$cust_svc->svcpart} > 0) {
      $target{$cust_svc->svcpart}--;
      my $new = new FS::cust_svc {
        svcnum  => $cust_svc->svcnum,
        svcpart => $cust_svc->svcpart,
        pkgnum  => $dest_pkgnum,
      };
      my $error = $new->replace($cust_svc);
      return $error if $error;
    } elsif ( exists $opt{'change_svcpart'} && $opt{'change_svcpart'} ) {
      if ( $DEBUG ) {
        warn "looking for alternates for svcpart ". $cust_svc->svcpart. "\n";
        warn "alternates to consider: ".
             join(', ', @{$svcpart2svcparts{$cust_svc->svcpart}}). "\n";
      }
      my @alternate = grep {
                             warn "considering alternate svcpart $_: ".
                                  "$target{$_} available in new package\n"
                               if $DEBUG;
                             $target{$_} > 0;
                           } @{$svcpart2svcparts{$cust_svc->svcpart}};
      if ( @alternate ) {
        warn "alternate(s) found\n" if $DEBUG;
        my $change_svcpart = $alternate[0];
        $target{$change_svcpart}--;
        my $new = new FS::cust_svc {
          svcnum  => $cust_svc->svcnum,
          svcpart => $change_svcpart,
          pkgnum  => $dest_pkgnum,
        };
        my $error = $new->replace($cust_svc);
        return $error if $error;
      } else {
        $remaining++;
      }
    } else {
      $remaining++
    }
  }
  return $remaining;
}

=item reexport

This method is deprecated.  See the I<depend_jobnum> option to the insert and
order_pkgs methods in FS::cust_main for a better way to defer provisioning.

=cut

sub reexport {
  my $self = shift;

  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;

  foreach my $cust_svc ( $self->cust_svc ) {
    #false laziness w/svc_Common::insert
    my $svc_x = $cust_svc->svc_x;
    foreach my $part_export ( $cust_svc->part_svc->part_export ) {
      my $error = $part_export->export_insert($svc_x);
      if ( $error ) {
        $dbh->rollback if $oldAutoCommit;
        return $error;
      }
    }
  }

  $dbh->commit or die $dbh->errstr if $oldAutoCommit;
  '';

}

=back

=head1 CLASS METHODS

=over 4

=item recurring_sql

Returns an SQL expression identifying recurring packages.

=cut

sub recurring_sql { "
  '0' != ( select freq from part_pkg
             where cust_pkg.pkgpart = part_pkg.pkgpart )
"; }

=item onetime_sql

Returns an SQL expression identifying one-time packages.

=cut

sub onetime_sql { "
  '0' = ( select freq from part_pkg
            where cust_pkg.pkgpart = part_pkg.pkgpart )
"; }

=item active_sql

Returns an SQL expression identifying active packages.

=cut

sub active_sql { "
  ". $_[0]->recurring_sql(). "
  AND ( cust_pkg.cancel IS NULL OR cust_pkg.cancel = 0 )
  AND ( cust_pkg.susp   IS NULL OR cust_pkg.susp   = 0 )
"; }

=item inactive_sql

Returns an SQL expression identifying inactive packages (one-time packages
that are otherwise unsuspended/uncancelled).

=cut

sub inactive_sql { "
  ". $_[0]->onetime_sql(). "
  AND ( cust_pkg.cancel IS NULL OR cust_pkg.cancel = 0 )
  AND ( cust_pkg.susp   IS NULL OR cust_pkg.susp   = 0 )
"; }

=item susp_sql
=item suspended_sql

Returns an SQL expression identifying suspended packages.

=cut

sub suspended_sql { susp_sql(@_); }
sub susp_sql {
  #$_[0]->recurring_sql(). ' AND '.
  "
        ( cust_pkg.cancel IS     NULL  OR cust_pkg.cancel = 0 )
    AND   cust_pkg.susp   IS NOT NULL AND cust_pkg.susp  != 0
  ";
}

=item cancel_sql
=item cancelled_sql

Returns an SQL exprression identifying cancelled packages.

=cut

sub cancelled_sql { cancel_sql(@_); }
sub cancel_sql { 
  #$_[0]->recurring_sql(). ' AND '.
  "cust_pkg.cancel IS NOT NULL AND cust_pkg.cancel != 0";
}

=head1 SUBROUTINES

=over 4

=item order CUSTNUM, PKGPARTS_ARYREF, [ REMOVE_PKGNUMS_ARYREF [ RETURN_CUST_PKG_ARRAYREF ] ]

CUSTNUM is a customer (see L<FS::cust_main>)

PKGPARTS is a list of pkgparts specifying the the billing item definitions (see
L<FS::part_pkg>) to order for this customer.  Duplicates are of course
permitted.

REMOVE_PKGNUMS is an optional list of pkgnums specifying the billing items to
remove for this customer.  The services (see L<FS::cust_svc>) are moved to the
new billing items.  An error is returned if this is not possible (see
L<FS::pkg_svc>).  An empty arrayref is equivalent to not specifying this
parameter.

RETURN_CUST_PKG_ARRAYREF, if specified, will be filled in with the
newly-created cust_pkg objects.

=cut

sub order {
  my ($custnum, $pkgparts, $remove_pkgnum, $return_cust_pkg) = @_;

  my $conf = new FS::Conf;

  # Transactionize this whole mess
  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;

  my $error;
  my $cust_main = qsearchs('cust_main', { custnum => $custnum });
  return "Customer not found: $custnum" unless $cust_main;

  my @old_cust_pkg = map { qsearchs('cust_pkg', { pkgnum => $_ }) }
                         @$remove_pkgnum;

  my $change = scalar(@old_cust_pkg) != 0;

  my %hash = (); 
  if ( scalar(@old_cust_pkg) == 1 ) {
    #$hash{$_} = $old_cust_pkg[0]->$_() foreach qw( last_bill bill );
    $hash{'setup'} = time;
  }

  # Create the new packages.
  foreach my $pkgpart (@$pkgparts) {
    my $cust_pkg = new FS::cust_pkg { custnum => $custnum,
                                      pkgpart => $pkgpart,
                                      %hash,
                                    };
    $error = $cust_pkg->insert( 'change' => $change );
    if ($error) {
      $dbh->rollback if $oldAutoCommit;
      return $error;
    }
    push @$return_cust_pkg, $cust_pkg;
  }
  # $return_cust_pkg now contains refs to all of the newly 
  # created packages.

  # Transfer services and cancel old packages.
  foreach my $old_pkg (@old_cust_pkg) {

    foreach my $new_pkg (@$return_cust_pkg) {
      $error = $old_pkg->transfer($new_pkg);
      if ($error and $error == 0) {
        # $old_pkg->transfer failed.
	$dbh->rollback if $oldAutoCommit;
	return $error;
      }
    }

    if ( $error > 0 && $conf->exists('cust_pkg-change_svcpart') ) {
      warn "trying transfer again with change_svcpart option\n" if $DEBUG;
      foreach my $new_pkg (@$return_cust_pkg) {
        $error = $old_pkg->transfer($new_pkg, 'change_svcpart'=>1 );
        if ($error and $error == 0) {
          # $old_pkg->transfer failed.
  	$dbh->rollback if $oldAutoCommit;
  	return $error;
        }
      }
    }

    if ($error > 0) {
      # Transfers were successful, but we went through all of the 
      # new packages and still had services left on the old package.
      # We can't cancel the package under the circumstances, so abort.
      $dbh->rollback if $oldAutoCommit;
      return "Unable to transfer all services from package ".$old_pkg->pkgnum;
    }
    $error = $old_pkg->cancel( quiet=>1 );
    if ($error) {
      $dbh->rollback;
      return $error;
    }
  }
  $dbh->commit or die $dbh->errstr if $oldAutoCommit;
  '';
}

sub insert_reason {
  my ($self, %options) = @_;

  my $otaker = $FS::CurrentUser::CurrentUser->name;
  $otaker = $FS::CurrentUser::CurrentUser->username
    if (($otaker) eq "User, Legacy");

  my $cust_pkg_reason =
    new FS::cust_pkg_reason({ 'pkgnum'    => $self->pkgnum,
                              'reasonnum' => $options{'reason'}, 
		              'otaker'    => $otaker,
		              'date'      => $options{'date'}
			                       ? $options{'date'}
					       : time,
	                    });
  return $cust_pkg_reason->insert;
}

=item set_usage USAGE_VALUE_HASHREF 

USAGE_VALUE_HASHREF is a hashref of svc_acct usage columns and the amounts
to which they should be set (see L<FS::svc_acct>).  Currently seconds,
upbytes, downbytes, and totalbytes are appropriate keys.

All svc_accts which are part of this package have their values reset.

=cut

sub set_usage {
  my ($self, $valueref) = @_;

  foreach my $cust_svc ($self->cust_svc){
    my $svc_x = $cust_svc->svc_x;
    $svc_x->set_usage($valueref)
      if $svc_x->can("set_usage");
  }
}

=back

=head1 BUGS

sub order is not OO.  Perhaps it should be moved to FS::cust_main and made so?

In sub order, the @pkgparts array (passed by reference) is clobbered.

Also in sub order, no money is adjusted.  Once FS::part_pkg defines a standard
method to pass dates to the recur_prog expression, it should do so.

FS::svc_acct, FS::svc_domain, FS::svc_www, FS::svc_ip and FS::svc_forward are
loaded via 'use' at compile time, rather than via 'require' in sub { setup,
suspend, unsuspend, cancel } because they use %FS::UID::callback to load
configuration values.  Probably need a subroutine which decides what to do
based on whether or not we've fetched the user yet, rather than a hash.  See
FS::UID and the TODO.

Now that things are transactional should the check in the insert method be
moved to check ?

=head1 SEE ALSO

L<FS::Record>, L<FS::cust_main>, L<FS::part_pkg>, L<FS::cust_svc>,
L<FS::pkg_svc>, schema.html from the base documentation

=cut

1;