package webshop::Discount;

use strict;
use warnings 'all';

use Contenido::Globals;
use base "Contenido::Document";
use Data::Dumper;

sub extra_properties
{
	return (
		{ 'attr' => 'code',				'hidden' => 1, 'column' => undef },
		{ 'attr' => 'class',				'column' => undef },
		{ 'attr' => 'dtime',				'rusname' => 'Начало действия скидки' },
		{ 'attr' => 'etime',				'rusname' => 'Окончание действия скидки' },
		{ 'attr' => 'status',	'type' => 'status',     'rusname' => 'Статус',
			'cases' => [
					[0, 'Скидка не активна'],
					[1, 'Скидка активна'],
				],
		},
		{ 'attr' => 'uid',	'type' => 'status',	'rusname' => 'Доступность для пользователей',
			'cases' => [
					[0, 'Скидка доступна всем пользователям'],
					[1, 'Скидка доступна только зарегистрированным пользователям'],
				],
		},
		{ 'attr' => 'groups',				'rusname' => 'Группы товаров',
				lookup_opts => { class => $state->{webshop}->{item_section_class}, },
				allow_null => 1,
				rem	=> 'Список разделов, на содержимое которых распространяется скидка по купону',
		},
		{ 'attr' => 'min_sum',	'type' => 'string',	'rusname' => 'Порог суммы, с которого действует скидка',
				default => 0, column => 2, shortname => 'Сумма заказа' },
		{ 'attr' => 'discount',	'type' => 'string',	'rusname' => 'Размер скидки (число или процент)', shortname => 'Скидка',
				default => 0, column => 3 },
	)
}

sub class_name
{
	return 'Webshop: скидка';
}

sub class_description
{
	return 'Webshop: скидка';
}

sub class_table
{
	return 'webshop::SQL::CouponsTable';
}

sub contenido_status_style
{
	my $self = shift;
	if ( $self->status == 3 ) {
		return 'color:black;';
	} elsif ( $self->status == 2 ) {
		return 'color:red;';
	} elsif ( $self->status == 4 ) {
		return 'color:olive;';
	}
}

sub table_links
{
	return [
#		{ name => 'Купоны', class => 'webshop::Coupon', filter => 'pid', field => 'pid' },
	];
}


sub get_discount
{
    my $self = shift;

    my (%opts) = @_;
    my $basket = delete $opts{basket};
    return 0	unless exists $opts{uid} && $opts{uid} || exists $opts{session} && $opts{session};
    return 0	unless $self->discount;

    $basket ||= $keeper->{webshop}->get_basket ( %opts );
    return 0	unless ref $basket eq 'ARRAY' && @$basket;

    my ($number, $sum_total) = (0, 0);
    map { $number += $_->number; $sum_total += $_->number * $_->price } @$basket;
    warn "BASKET: $number Items of $sum_total Value\n";

    my $discount_counted = 0;
    my $items;
    if ( $self->groups ) {
	$items = $self->keeper->get_documents (
			s	=> [$self->groups],
			class	=> $state->{webshop}->{item_document_class},
			light	=> 1,
			return_mode	=> 'array_ref',
		);
    } else {
	$items = $self->keeper->get_documents (
			class	=> $state->{webshop}->{item_document_class},
			lclass	=> 'webshop::DiscountItemLink',
			lsource	=> $self->id,
			light	=> 1,
			return_mode	=> 'array_ref',
		);
    }

    if ( ref $items eq 'ARRAY' && @$items ) {
	my $found_sum = 0;
	foreach my $bi ( @$basket ) {
		warn "BASKET: Item id [".$bi->item_id."]\n"				if $DEBUG;
		next	if $bi->special_price;
		foreach my $item ( @$items) {
			if ( $bi->item_id == $item->id ) {
				warn "BASKET: Item [".$item->name."] id [".$item->id."]\n"	if $DEBUG;
				$found_sum += $bi->number * $bi->price;
				last;
			}
		}
	}
	warn "Sum found: [$found_sum]\n"						if $DEBUG;
	return $self->can_discount( $found_sum );
    } elsif ( $self->groups ) {
	return 0;
    } else {
	my $found_sum = 0;
	foreach my $bi ( @$basket ) {
		warn "BASKET: Item id [".$bi->item_id."]\n"				if $DEBUG;
		next	if $bi->special_price;
		$found_sum += $bi->number * $bi->price;
	}
	warn "Sum found: [$found_sum]\n"						if $DEBUG;
	return $self->can_discount( $found_sum );
    }
    return 0;
}


sub can_discount
{
    my $self = shift;
    my $sum = shift;
    return 0	unless $sum;

    my $discount = $self->discount;
    my $min_sum = $self->min_sum || 0;
    my $count = 0;
    if ( $discount =~ /([\d\.]+)%/ ) {
	my $proc = $1;
	return 0	unless $proc;
	$count = $sum / 100 * $proc;
    } else {
	$count = $discount;
    }
    my $rest = $sum - $count;
    $count = 0		if $rest < $min_sum || $rest == 0;
    return $count;
}



sub pre_store
{
	my $self = shift;

	my $default_section = $project->s_alias->{webshop_discounts}	if ref $project->s_alias eq 'HASH';
	if ( $default_section && !$self->sections ) {
		$self->sections($default_section);
	}

	return 1;
}


sub post_delete
{
    my $self = shift;

    my $sql = $self->keeper->SQL->prepare('DELETE FROM webshop_coupon_links where source_id = ?');
    $sql->execute( $self->id );

    1;
}

1;