package SL::Controller::FinancialControllingReport;

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

use List::Util qw(max min sum);

use SL::DB::Order;
use SL::DB::ProjectType;
use SL::Controller::Helper::GetModels;
use SL::Controller::Helper::ReportGenerator;
use SL::Locale::String;

use Rose::Object::MakeMethods::Generic (
  scalar                  => [ qw(orders) ],
  'scalar --get_set_init' => [ qw(project_types models) ],
);

__PACKAGE__->run_before(sub { $::auth->assert('sales_order_edit'); });

my %sort_columns = (
  ordnumber               => t8('Order'),
  customer                => t8('Customer'),
  transaction_description => t8('Transaction description'),
  globalprojectnumber     => t8('Project'),
  globalproject_type      => t8('Project Type'),
);

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

  $self->make_filter_summary;

  $self->prepare_report;

  $self->orders($self->models->get);

  $self->calculate_data;

  $self->setup_list_action_bar;
  $self->list_objects;
}

# private functions

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

  my $report      = SL::ReportGenerator->new(\%::myconfig, $::form);
  $report->{title} = t8('Financial Controlling Report');
  $self->{report} = $report;

  my @columns     = qw(customer globalprojectnumber globalproject_type transaction_description ordnumber net_amount delivered_amount delivered_amount_p billed_amount billed_amount_p paid_amount paid_amount_p
                       billable_amount billable_amount_p other_amount);
  my @sortable    = qw(ordnumber transdate customer globalprojectnumber globalproject_type transaction_description );
  $self->{number_columns} = [ qw(net_amount billed_amount billed_amount_p delivered_amount delivered_amount_p paid_amount paid_amount_p other_amount billable_amount billable_amount_p) ];

  my %column_defs           = (
    net_amount              => { text     => $::locale->text('Order amount')                                             },
    billed_amount           => { text     => $::locale->text('Billed amount')                                            },
    billed_amount_p         => { text     => $::locale->text('%')                                                        },
    delivered_amount        => { text     => $::locale->text('Delivered amount')                                         },
    delivered_amount_p      => { text     => $::locale->text('%')                                                        },
    paid_amount             => { text     => $::locale->text('Paid amount')                                              },
    paid_amount_p           => { text     => $::locale->text('%')                                                        },
    billable_amount         => { text     => $::locale->text('Billable amount')                                          },
    billable_amount_p       => { text     => $::locale->text('%')                                                        },
    other_amount            => { text     => $::locale->text('Billed extra expenses')                                    },
    transaction_description => { text     => $::locale->text('Transaction description')                                  },
    ordnumber               => { obj_link => sub { $self->link_to($_[0])                                              }  },
    customer                => {      sub => sub { $_[0]->customer->name                                              },
                                 obj_link => sub { $self->link_to($_[0]->customer)                                    }  },
    globalprojectnumber     => {      sub => sub { $_[0]->globalproject_id ? $_[0]->globalproject->projectnumber : '' },
                                 obj_link => sub { $self->link_to($_[0]->globalproject)                               }  },
    globalproject_type      => { text     => $::locale->text('Project type'),
                                 sub      => sub { $_[0]->globalproject_id ? $_[0]->globalproject->project_type->description : '' }  },
  );

  $column_defs{$_}->{text} ||= $::locale->text( $self->models->get_sort_spec->{$_}->{title} ) for keys %column_defs;
  $column_defs{$_}->{align}  = 'right'                                                        for @{ $self->{number_columns} };

  $report->set_options(
    std_column_visibility => 1,
    controller_class      => 'FinancialControllingReport',
    output_format         => 'HTML',
    top_info_text         => $::locale->text('Financial controlling report for open sales orders'),
    title                 => $::locale->text('Financial Controlling Report'),
    allow_pdf_export      => 1,
    allow_csv_export      => 1,
  );
  $report->set_columns(%column_defs);
  $report->set_column_order(@columns);
  $report->set_export_options(qw(list filter));
  $report->set_options_from_form;
  $self->models->disable_plugin('paginated') if $report->{options}{output_format} =~ /^(pdf|csv)$/i;
  $self->models->finalize;
  $self->models->set_report_generator_sort_options(report => $report, sortable_columns => \@sortable);
  $report->set_options(
    raw_top_info_text     => $self->render('financial_controlling_report/report_top',    { output => 0 }),
    raw_bottom_info_text  => $self->render('financial_controlling_report/report_bottom', { output => 0 }, models => $self->models),
  );
}

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

  foreach my $order (@{ $self->orders }) {
    my @delivery_orders = @{ $order->linked_records(direction => 'to', to => 'DeliveryOrder', via => 'Order', query => [ '!customer_id' => undef ]) };
    my @invoices        = @{ $order->linked_records(direction => 'to', to => 'Invoice',       via => [ 'Order', 'DeliveryOrder' ])                  };

    @invoices = (
      grep({ !$_->storno_id } @invoices),
      map({ @{ $_->storno_invoices } } grep { $_->storno && !$_->storno_id } @invoices),
    );

    $order->{delivered_amount}  = sum(map { $self->sum_relevant_items(order => $order, other => $_, by_order => 1)    } @delivery_orders) // 0;
    $order->{billed_amount}     = sum(map { $self->sum_relevant_items(order => $order, other => $_)                   } @invoices)        // 0;
    $order->{paid_amount}       = sum(map { $_->paid * $_->netamount / (($_->amount * 1) || ($_->netamount * 1) || 1) } @invoices)        // 0;
    my $billed_amount           = sum(map { $_->netamount                                                             } @invoices)        // 0;
    $order->{other_amount}      = $billed_amount             - $order->{billed_amount};
    $order->{billable_amount}   = $order->{delivered_amount} - $order->{billed_amount};

    if ($order->periodic_invoices_config) {
      $order->{net_amount} = $self->calculate_periodic_invoices_order_netamount($order);

    } else {
      $order->{net_amount} = $order->netamount;
    }

    foreach (qw(delivered billed paid billable)) {
      $order->{"${_}_amount_p"} = $order->{net_amount} * 1 ? $order->{"${_}_amount"} * 100 / $order->{net_amount} : undef;
    }
  }
}

sub calculate_periodic_invoices_order_netamount {
  my ($self, $order) = @_;

  my $year       = DateTime->today_local->year;
  my $year_start = DateTime->new_local(day =>  1, month =>  1, year => $year);
  my $year_end   = DateTime->new_local(day => 31, month => 12, year => $year);

  my $cfg        = $order->periodic_invoices_config;
  my $period_len = $cfg->get_billing_period_length;
  my $num_months = 0;
  my $cur_date   = $cfg->start_date->clone;
  my $end_date   = $cfg->terminated ? $cfg->end_date : undef;
  $end_date    //= $year_end;
  $end_date      = min $end_date, $year_end;

  while ($cur_date <= $end_date) {
    $num_months += $period_len if $cur_date >= $year_start;
    $cur_date->add(months => $period_len);
  }

  return $num_months * $order->netamount / $order->periodic_invoices_config->get_order_value_period_length;
}

sub sum_items {
  my ($self, %params) = @_;

  my %vals;

  foreach my $item (@{ $params{obj}->items }) {
    my $key  = $item->parts_id;
    $key    .= ':' . $item->serialnumber if $item->serialnumber;

    $vals{$key}            ||= { parts_id => $item->parts_id, serialnumber => $item->serialnumber, amount => 0, base_qty => 0 };
    $vals{$key}->{amount}   += $item->qty * $item->sellprice * (1 - $item->discount) / (($item->price_factor * 1) || 1);
    $vals{$key}->{base_qty} += $item->qty * $item->unit_obj->base_factor;
  }

  return \%vals;
}

sub sum_relevant_items {
  my ($self, %params) = @_;

  $params{order}->{amounts_by_parts_id} ||= $self->sum_items(obj => $params{order});
  my $sums                                = $self->sum_items(obj => $params{other});
  my $total                               = 0;

  foreach my $item (grep { $params{order}->{amounts_by_parts_id}->{ $_->{parts_id} } } values %{ $sums }) {
    my $key = $item->{parts_id};

    if ($params{by_order}) {
      $key           .= ':' . $item->{serialnumber};
      my $order_item  = $params{order}->{amounts_by_parts_id}->{ $key } || $params{order}->{amounts_by_parts_id}->{ $item->{parts_id} };

      if ($order_item && $order_item->{base_qty}) {
        $total += $order_item->{amount} * $item->{base_qty} / $order_item->{base_qty};
        next;
      }
    }

    $total += $item->{amount};
  }

  return $total;
}

sub list_objects {
  my ($self)      = @_;
  my $modify_data = sub {
    my ($data) = @_;
    $data->{$_}->{data} = defined $data->{$_}->{data} ? int($data->{$_}->{data}) : ''  for grep {  m/_p$/ } @{ $self->{number_columns} };
    $data->{$_}->{data} = $::form->format_amount(\%::myconfig, $data->{$_}->{data}, 2) for grep { !m/_p$/ } @{ $self->{number_columns} };
  };

  return $self->report_generator_list_objects(report => $self->{report}, objects => $self->orders, data_callback => $modify_data);
}

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

  my $filter = $::form->{filter} || {};
  my @filter_strings;

  my @filters = (
    [ $filter->{"ordnumber:substr::ilike"},                $::locale->text('Number')                                          ],
    [ $filter->{"transdate:date::ge"},                     $::locale->text('Order Date') . " " . $::locale->text('From Date') ],
    [ $filter->{"transdate:date::le"},                     $::locale->text('Order Date') . " " . $::locale->text('To Date')   ],
    [ $filter->{customer}{"name:substr::ilike"},           $::locale->text('Customer')                                        ],
    [ $filter->{customer}{"customernumber:substr::ilike"}, $::locale->text('Customer Number')                                 ],
  );

  $self->{filter_summary} = join ', ', @filter_strings;
}

sub init_project_types { SL::DB::Manager::ProjectType->get_all_sorted }

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

  SL::Controller::Helper::GetModels->new(
    controller   => $self,
    model        => 'Order',
    sorted       => {
      _default     => {
        by           => 'globalprojectnumber',
        dir          => 1,
      },
      %sort_columns,
    },
    query => [
      SL::DB::Manager::Order->type_filter('sales_order'),
      '!closed' => 1,
      (salesman_id => SL::DB::Manager::Employee->current->id) x !$::auth->assert('sales_all_edit', 1),
      or        => [
        globalproject_id => undef,
        and              => [
          'globalproject.active' => 1,
          'globalproject.valid'  => 1,
        ]],
      # keine WR
      # oder aber (WR aktiv und (kein enddatum oder enddatum noch nicht überschritten))
      or => [
        'periodic_invoices_config.id' => undef,
        # and => [
          'periodic_invoices_config.active' => 1,
        #   or => [
        #     'periodic_invoices_config.end_date' => undef,
        #     'periodic_invoices_config.end_date' => { le => DateTime->today_local },
        # ]
        # ]
      ],
    ],
    with_objects => [ 'customer', 'globalproject', 'globalproject.project_type', 'periodic_invoices_config' ],
  );
}

sub link_to {
  my ($self, $object, %params) = @_;

  return unless $object;
  my $action = $params{action} || 'edit';

  if ($object->isa('SL::DB::Order')) {
    my $type = $object->type;
    my $id   = $object->id;

    if ($::instance_conf->get_feature_experimental_order) {
      return "controller.pl?action=Order/$action&type=$type&id=$id";
    } else {
      return "oe.pl?action=$action&type=$type&vc=customer&id=$id";
    }
  }
  if ($object->isa('SL::DB::Customer')) {
    my $id     = $object->id;
    return "controller.pl?action=CustomerVendor/$action&id=$id";
  }
  if ($object->isa('SL::DB::Project')) {
    my $id     = $object->id;
    return "controller.pl?action=Project/$action&id=$id";
  }
}

sub setup_list_action_bar {
  my ($self, %params) = @_;

  for my $bar ($::request->layout->get('actionbar')) {
    $bar->add(
      action => [
        t8('Update'),
        submit    => [ '#filter_form', { action => 'FinancialControllingReport/list' } ],
        accesskey => 'enter',
      ],
    );
  }
}

1;