use Modern::Perl;
use Test::More tests => 8;
use Test::MockModule;

use C4::Acquisition;
use C4::Bookseller;
use C4::Context;

use Koha::Number::Price;

use t::lib::Mocks;

t::lib::Mocks::mock_preference( 'gist', '0.02|0.05|0.196' );

my $bookseller_module = Test::MockModule->new('Koha::Acquisition::Bookseller');

my ( $basketno_0_0,  $basketno_1_1,  $basketno_1_0,  $basketno_0_1 );
my ( $invoiceid_0_0, $invoiceid_1_1, $invoiceid_1_0, $invoiceid_0_1 );
my $today;

for my $currency_format ( qw( US FR ) ) {
    t::lib::Mocks::mock_preference( 'CurrencyFormat', $currency_format );
    subtest 'Configuration 1: 0 0' => sub {
        plan tests => 7;
        $bookseller_module->mock(
            'fetch',
            sub {
                return { listincgst => 0, invoiceincgst => 0 };
            }
        );

        my $biblionumber_0_0 = 42;

        my $order_0_0 = {
            biblionumber     => $biblionumber_0_0,
            quantity         => 2,
            listprice        => 82.000000,
            unitprice        => 73.80000,
            quantityreceived => 2,
            basketno         => $basketno_0_0,
            invoiceid        => $invoiceid_0_0,
            rrp              => 82.00,
            ecost            => 73.80,
            gstrate          => 0.0500,
            discount         => 10.0000,
            datereceived     => $today
        };
        $order_0_0 = C4::Acquisition::populate_order_with_prices(
            {
                order        => $order_0_0,
                booksellerid => 'just_something',
                ordering     => 1,
            }
        );

        # Note that this configuration is correct \o/
        compare(
            {
                got      => $order_0_0->{rrpgsti},
                expected => 86.10,
                conf     => '0 0',
                field    => 'rrpgsti'
            }
        );
        compare(
            {
                got      => $order_0_0->{rrpgste},
                expected => 82.00,
                conf     => '0 0',
                field    => 'rrpgste'
            }
        );
        compare(
            {
                got      => $order_0_0->{ecostgsti},
                expected => 77.49,
                conf     => '0 0',
                field    => 'ecostgsti'
            }
        );
        compare(
            {
                got      => $order_0_0->{ecostgste},
                expected => 73.80,
                conf     => '0 0',
                field    => 'ecostgste'
            }
        );
        compare(
            {
                got      => $order_0_0->{gstvalue},
                expected => 7.38,
                conf     => '0 0',
                field    => 'gstvalue'
            }
        );
        compare(
            {
                got      => $order_0_0->{totalgsti},
                expected => 154.98,
                conf     => '0 0',
                field    => 'totalgsti'
            }
        );
        compare(
            {
                got      => $order_0_0->{totalgste},
                expected => 147.60,
                conf     => '0 0',
                field    => 'totalgste'
            }
        );
    };

    subtest 'Configuration 1: 1 1' => sub {
        plan tests => 7;
        $bookseller_module->mock(
            'fetch',
            sub {
                return { listincgst => 1, invoiceincgst => 1 };
            }
        );

        my $biblionumber_1_1 = 43;
        my $order_1_1        = {
            biblionumber     => $biblionumber_1_1,
            quantity         => 2,
            listprice        => 82.000000,
            unitprice        => 73.800000,
            quantityreceived => 2,
            basketno         => $basketno_1_1,
            invoiceid        => $invoiceid_1_1,
            rrp              => 82.00,
            ecost            => 73.80,
            gstrate          => 0.0500,
            discount         => 10.0000,
            datereceived     => $today
        };

        $order_1_1 = C4::Acquisition::populate_order_with_prices(
            {
                order        => $order_1_1,
                booksellerid => 'just_something',
                ordering     => 1,
            }
        );

        # Note that this configuration is *not* correct
        # gstvalue should be 7.03 instead of 7.02
        compare(
            {
                got      => $order_1_1->{rrpgsti},
                expected => 82.00,
                conf     => '1 1',
                field    => 'rrpgsti'
            }
        );
        compare(
            {
                got      => $order_1_1->{rrpgste},
                expected => 78.10,
                conf     => '1 1',
                field    => 'rrpgste'
            }
        );
        compare(
            {
                got      => $order_1_1->{ecostgsti},
                expected => 73.80,
                conf     => '1 1',
                field    => 'ecostgsti'
            }
        );
        compare(
            {
                got      => $order_1_1->{ecostgste},
                expected => 70.29,
                conf     => '1 1',
                field    => 'ecostgste'
            }
        );
        compare(
            {
                got      => $order_1_1->{gstvalue},
                expected => 7.02,
                conf     => '1 1',
                field    => 'gstvalue'
            }
        );
        compare(
            {
                got      => $order_1_1->{totalgsti},
                expected => 147.60,
                conf     => '1 1',
                field    => 'totalgsti'
            }
        );
        compare(
            {
                got      => $order_1_1->{totalgste},
                expected => 140.58,
                conf     => '1 1',
                field    => 'totalgste'
            }
        );
    };

    subtest 'Configuration 1: 1 0' => sub {
        plan tests => 7;
        $bookseller_module->mock(
            'fetch',
            sub {
                return { listincgst => 1, invoiceincgst => 0 };
            }
        );

        my $biblionumber_1_0 = 44;
        my $order_1_0        = {
            biblionumber     => $biblionumber_1_0,
            quantity         => 2,
            listprice        => 82.000000,
            unitprice        => 73.804500,
            quantityreceived => 2,
            basketno         => $basketno_1_1,
            invoiceid        => $invoiceid_1_1,
            rrp              => 82.01,
            ecost            => 73.80,
            gstrate          => 0.0500,
            discount         => 10.0000,
            datereceived     => $today
        };

        $order_1_0 = C4::Acquisition::populate_order_with_prices(
            {
                order        => $order_1_0,
                booksellerid => 'just_something',
                ordering     => 1,
            }
        );

        # Note that this configuration is *not* correct!
        # rrp gsti should be 82 (what we inserted!)
        # gstvalue should be 7.03 instead of 7.02

        compare(
            {
                got      => $order_1_0->{rrpgsti},
                expected => 82.01,
                conf     => '1 0',
                field    => 'rrpgsti'
            }
        );
        compare(
            {
                got      => $order_1_0->{rrpgste},
                expected => 78.10,
                conf     => '1 0',
                field    => 'rrpgste'
            }
        );
        compare(
            {
                got      => $order_1_0->{ecostgsti},
                expected => 73.80,
                conf     => '1 0',
                field    => 'ecostgsti'
            }
        );
        compare(
            {
                got      => $order_1_0->{ecostgste},
                expected => 70.29,
                conf     => '1 0',
                field    => 'ecostgste'
            }
        );
        compare(
            {
                got      => $order_1_0->{gstvalue},
                expected => 7.02,
                conf     => '1 0',
                field    => 'gstvalue'
            }
        );
        compare(
            {
                got      => $order_1_0->{totalgsti},
                expected => 147.60,
                conf     => '1 0',
                field    => 'totalgsti'
            }
        );
        compare(
            {
                got      => $order_1_0->{totalgste},
                expected => 140.58,
                conf     => '1 0',
                field    => 'totalgste'
            }
        );
    };

    subtest 'Configuration 1: 0 1' => sub {
        plan tests => 7;
        $bookseller_module->mock(
            'fetch',
            sub {
                return { listincgst => 0, invoiceincgst => 1 };
            }
        );

        my $biblionumber_0_1 = 45;
        my $order_0_1        = {
            biblionumber     => $biblionumber_0_1,
            quantity         => 2,
            listprice        => 82.000000,
            unitprice        => 73.800000,
            quantityreceived => 2,
            basketno         => $basketno_1_1,
            invoiceid        => $invoiceid_1_1,
            rrp              => 82.00,
            ecost            => 73.80,
            gstrate          => 0.0500,
            discount         => 10.0000,
            datereceived     => $today
        };

        $order_0_1 = C4::Acquisition::populate_order_with_prices(
            {
                order        => $order_0_1,
                booksellerid => 'just_something',
                ordering     => 1,
            }
        );

        # Note that this configuration is correct \o/
        compare(
            {
                got      => $order_0_1->{rrpgsti},
                expected => 86.10,
                conf     => '1 0',
                field    => 'rrpgsti'
            }
        );
        compare(
            {
                got      => $order_0_1->{rrpgste},
                expected => 82.00,
                conf     => '1 0',
                field    => 'rrpgste'
            }
        );
        compare(
            {
                got      => $order_0_1->{ecostgsti},
                expected => 77.49,
                conf     => '1 0',
                field    => 'ecostgsti'
            }
        );
        compare(
            {
                got      => $order_0_1->{ecostgste},
                expected => 73.80,
                conf     => '1 0',
                field    => 'ecostgste'
            }
        );
        compare(
            {
                got      => $order_0_1->{gstvalue},
                expected => 7.38,
                conf     => '1 0',
                field    => 'gstvalue'
            }
        );
        compare(
            {
                got      => $order_0_1->{totalgsti},
                expected => 154.98,
                conf     => '1 0',
                field    => 'totalgsti'
            }
        );
        compare(
            {
                got      => $order_0_1->{totalgste},
                expected => 147.60,
                conf     => '1 0',
                field    => 'totalgste'
            }
        );
    };
}

sub compare {
    my ($params) = @_;
    is(
        Koha::Number::Price->new( $params->{got} )->format,
        Koha::Number::Price->new( $params->{expected} )->format,
"configuration $params->{conf}: $params->{field} should be correctly calculated"
    );
}