use Modern::Perl;
use Test::More;
use Test::MockModule;

use t::lib::Mocks;

use Module::Load::Conditional qw/check_install/;

BEGIN {
    if ( check_install( module => 'Test::DBIx::Class' ) ) {
        plan tests => 15;
    } else {
        plan skip_all => "Need Test::DBIx::Class"
    }
}

use_ok('C4::Context');
use_ok('Koha::Number::Price');

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

use Test::DBIx::Class;

my $db = Test::MockModule->new('Koha::Database');
$db->mock( _new_schema => sub { return Schema(); } );
Koha::Database::flush_schema_cache();

fixtures_ok [
    Currency => [
        [ qw/ currency symbol rate active / ],
        [ 'my_cur', '€', 1, 1, ],
    ],
    Aqbookseller => [
        [ qw/ id name listincgst invoiceincgst / ],
        [ 1, '0 0', 0, 0 ],
        [ 2, '0 1', 0, 1 ],
        [ 3, '1 0', 1, 0 ],
        [ 4, '1 1', 1, 1 ],
    ],
    Aqbasket => [
        [ qw/ basketno basketname booksellerid / ],
        [ 1, '0 0', 1 ],
        [ 2, '0 1', 2 ],
        [ 3, '1 0', 3 ],
        [ 4, '1 1', 4 ],
    ],
], 'add currency fixtures';

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

my ( $basketno_0_0, $basketno_0_1, $basketno_1_0, $basketno_1_1 ) = (1, 2, 3, 4);
my ( $invoiceid_0_0, $invoiceid_1_1 );
my $today;

for my $currency_format ( qw( US FR ) ) {
    t::lib::Mocks::mock_preference( 'CurrencyFormat', $currency_format );
    subtest 'Configuration 1: 0 0 (Vendor List prices do not include tax / Invoice prices do not include tax)' => sub {
        plan tests => 8;

        my $biblionumber_0_0 = 42;

        my $order_0_0 = Koha::Acquisition::Order->new({
            biblionumber     => $biblionumber_0_0,
            quantity         => 2,
            listprice        => 82,
            unitprice        => 73.80,
            quantityreceived => 2,
            basketno         => $basketno_0_0,
            invoiceid        => $invoiceid_0_0,
            rrp              => 82.00,
            ecost            => 73.80,
            tax_rate_on_ordering  => 0.0500,
            tax_rate_on_receiving => 0.0500,
            discount         => 10,
            datereceived     => $today
        });
        $order_0_0->populate_with_prices_for_ordering();

        compare(
            {
                got      => $order_0_0->rrp_tax_included,
                expected => 86.10,
                conf     => '0 0',
                field    => 'rrp_tax_included'
            }
        );
        compare(
            {
                got      => $order_0_0->rrp_tax_excluded,
                expected => 82.00,
                conf     => '0 0',
                field    => 'rrp_tax_excluded'
            }
        );
        compare(
            {
                got      => $order_0_0->ecost_tax_included,
                expected => 77.49,
                conf     => '0 0',
                field    => 'ecost_tax_included'
            }
        );
        compare(
            {
                got      => $order_0_0->ecost_tax_excluded,
                expected => 73.80,
                conf     => '0 0',
                field    => 'ecost_tax_excluded'
            }
        );
        compare(
            {
                got      => $order_0_0->tax_value_on_ordering,
                expected => 7.38,
                conf     => '0 0',
                field    => 'tax_value'
            }
        );

        $order_0_0->populate_with_prices_for_receiving();

        compare(
            {
                got      => $order_0_0->unitprice_tax_included,
                expected => 77.49,
                conf     => '0 0',
                field    => 'unitprice_tax_included'
            }
        );
        compare(
            {
                got      => $order_0_0->unitprice_tax_excluded,
                expected => 73.80,
                conf     => '0 0',
                field    => 'unitprice_tax_excluded'
            }
        );
        compare(
            {
                got      => $order_0_0->tax_value_on_receiving,
                expected => 7.38,
                conf     => '0 0',
                field    => 'tax_value'
            }
        );
    };

    subtest 'Configuration 1: 1 1 (Vendor List prices do include tax / Invoice prices include tax)' => sub {
        plan tests => 11;

        my $biblionumber_1_1 = 43;
        my $order_1_1        = Koha::Acquisition::Order->new({
            biblionumber     => $biblionumber_1_1,
            quantity         => 2,
            listprice        => 82,
            unitprice        => 73.80,
            quantityreceived => 2,
            basketno         => $basketno_1_1,
            invoiceid        => $invoiceid_1_1,
            rrp              => 82.00,
            ecost            => 73.80,
            tax_rate_on_ordering  => 0.0500,
            tax_rate_on_receiving => 0.0500,
            discount         => 10,
            datereceived     => $today
        });

        $order_1_1->populate_with_prices_for_ordering();

        compare(
            {
                got      => $order_1_1->rrp_tax_included,
                expected => 82.00,
                conf     => '1 1',
                field    => 'rrp_tax_included'
            }
        );
        compare(
            {
                got      => $order_1_1->rrp_tax_excluded,
                expected => 78.10,
                conf     => '1 1',
                field    => 'rrp_tax_excluded'
            }
        );
        compare(
            {
                got      => $order_1_1->ecost_tax_included,
                expected => 73.80,
                conf     => '1 1',
                field    => 'ecost_tax_included'
            }
        );
        compare(
            {
                got      => $order_1_1->ecost_tax_excluded,
                expected => 70.29,
                conf     => '1 1',
                field    => 'ecost_tax_excluded'
            }
        );
        compare(
            {
                got      => $order_1_1->tax_value_on_ordering,
                expected => 7.03,
                conf     => '1 1',
                field    => 'tax_value'
            }
        );

        $order_1_1->populate_with_prices_for_receiving();

        compare(
            {
                got      => $order_1_1->unitprice_tax_included,
                expected => 73.80,
                conf     => '1 1',
                field    => 'unitprice_tax_included'
            }
        );
        compare(
            {
                got      => $order_1_1->unitprice_tax_excluded,
                expected => 70.29,
                conf     => '1 1',
                field    => 'unitprice_tax_excluded'
            }
        );
        compare(
            {
                got      => $order_1_1->tax_value_on_receiving,
                expected => 7.03,
                conf     => '1 1',
                field    => 'tax_value'
            }
        );

        # When unitprice is 0.00
        # Koha::Acquisition::Order::populate_with_prices_for_ordering() falls
        # back to using ecost_tax_included and ecost_tax_excluded
        $order_1_1        = Koha::Acquisition::Order->new({
            biblionumber     => $biblionumber_1_1,
            quantity         => 1,
            listprice        => 10,
            unitprice        => '0.00',
            quantityreceived => 1,
            basketno         => $basketno_1_1,
            invoiceid        => $invoiceid_1_1,
            rrp              => 10.00,
            ecost            => 10.00,
            tax_rate_on_ordering  => 0.1500,
            tax_rate_on_receiving => 0.1500,
            discount         => 0,
            datereceived     => $today
        });

        $order_1_1->populate_with_prices_for_ordering();

        compare(
            {
                got      => $order_1_1->ecost_tax_included,
                expected => 10.00,
                conf     => '1 1',
                field    => 'ecost_tax_included'
            }
        );
        compare(
            {
                got      => $order_1_1->ecost_tax_excluded,
                expected => 8.70,
                conf     => '1 1',
                field    => 'ecost_tax_excluded'
            }
        );
        compare(
            {
                got      => $order_1_1->tax_value_on_ordering,
                expected => 1.30,
                conf     => '1 1',
                field    => 'tax_value'
            }
        );
    };

    subtest 'Configuration 1: 1 0 (Vendor List prices include tax / Invoice prices do not include tax)' => sub {
        plan tests => 9;

        my $biblionumber_1_0 = 44;
        my $order_1_0 = Koha::Acquisition::Order->new({
            biblionumber     => $biblionumber_1_0,
            quantity         => 2,
            listprice        => 82,
            unitprice        => 0,
            quantityreceived => 2,
            basketno         => $basketno_1_0,
            invoiceid        => $invoiceid_1_1,
            rrp              => 82.00,
            ecost            => 73.80,
            tax_rate_on_ordering  => 0.0500,
            tax_rate_on_receiving => 0.0500,
            discount         => 10,
            datereceived     => $today
        });

        $order_1_0->populate_with_prices_for_ordering();

        compare(
            {
                got      => $order_1_0->rrp_tax_included,
                expected => 82,
                conf     => '1 0',
                field    => 'rrp_tax_included'
            }
        );
        compare(
            {
                got      => $order_1_0->rrp_tax_excluded,
                expected => 78.10,
                conf     => '1 0',
                field    => 'rrp_tax_excluded'
            }
        );
        compare(
            {
                got      => $order_1_0->ecost_tax_included,
                expected => 73.80,
                conf     => '1 0',
                field    => 'ecost_tax_included'
            }
        );
        compare(
            {
                got      => $order_1_0->ecost_tax_excluded,
                expected => 70.29,
                conf     => '1 0',
                field    => 'ecost_tax_excluded'
            }
        );
        # If we order with unitprice = 0, tax is calculated from the ecost
        # (note that in addorder.pl and addorderiso2709 the unitprice may/will be set to the ecost
        compare(
            {
                got      => $order_1_0->tax_value_on_ordering,
                expected => 7.03,
                conf     => '1 0',
                field    => 'tax_value'
            }
        );
        $order_1_0->unitprice(70.29);
        $order_1_0->populate_with_prices_for_ordering();

        # If a unitprice is provided at ordering, we calculate the tax from that
        compare(
            {
                got      => $order_1_0->tax_value_on_ordering,
                expected => 6.69,
                conf     => '1 0',
                field    => 'tax_value'
            }
        );

        $order_1_0->populate_with_prices_for_receiving();

        compare(
            {
                got      => $order_1_0->unitprice_tax_included,
                expected => 73.80,
                conf     => '1 0',
                field    => 'unitprice_tax_included'
            }
        );
        compare(
            {
                got      => $order_1_0->unitprice_tax_excluded,
                expected => 70.29,
                conf     => '1 0',
                field    => 'unitprice_tax_excluded'
            }
        );
        compare(
            {
                got      => $order_1_0->tax_value_on_receiving,
                expected => 7.03,
                conf     => '1 0',
                field    => 'tax_value'
            }
        );
    };

    subtest 'Configuration 1: 0 1 (Vendor List prices do not include tax / Invoice prices include tax)' => sub {
        plan tests => 9;

        my $biblionumber_0_1 = 45;
        my $order_0_1 = Koha::Acquisition::Order->new({
            biblionumber     => $biblionumber_0_1,
            quantity         => 2,
            listprice        => 82,
            unitprice        => 0,
            quantityreceived => 2,
            basketno         => $basketno_0_1,
            invoiceid        => $invoiceid_1_1,
            rrp              => 82.00,
            ecost            => 73.80,
            tax_rate_on_ordering  => 0.0500,
            tax_rate_on_receiving => 0.0500,
            discount         => 10,
            datereceived     => $today
        });

        $order_0_1->populate_with_prices_for_ordering();

        compare(
            {
                got      => $order_0_1->rrp_tax_included,
                expected => 86.10,
                conf     => '0 1',
                field    => 'rrp_tax_included'
            }
        );
        compare(
            {
                got      => $order_0_1->rrp_tax_excluded,
                expected => 82.00,
                conf     => '0 1',
                field    => 'rrp_tax_excluded'
            }
        );
        compare(
            {
                got      => $order_0_1->ecost_tax_included,
                expected => 77.49,
                conf     => '0 1',
                field    => 'ecost_tax_included'
            }
        );
        compare(
            {
                got      => $order_0_1->ecost_tax_excluded,
                expected => 73.80,
                conf     => '0 1',
                field    => 'ecost_tax_excluded'
            }
        );
        # If we order with unitprice = 0, tax is calculated from the ecost
        # (note that in addorder.pl and addorderiso2709 the unitprice may/will be set to the ecost
        compare(
            {
                got      => $order_0_1->tax_value_on_ordering,
                expected => 7.38,
                conf     => '0 1',
                field    => 'tax_value'
            }
        );
        $order_0_1->unitprice(77.490000);
        $order_0_1->populate_with_prices_for_ordering();

        # If a unitprice is provided at ordering, we calculate the tax from that
        compare(
            {
                got      => $order_0_1->tax_value_on_ordering,
                expected => 7.75,
                conf     => '0 1',
                field    => 'tax_value'
            }
        );
        $order_0_1->populate_with_prices_for_receiving();

        compare(
            {
                got      => $order_0_1->unitprice_tax_included,
                expected => 77.49,
                conf     => '0 1',
                field    => 'unitprice_tax_included'
            }
        );
        compare(
            {
                got      => $order_0_1->unitprice_tax_excluded,
                expected => 73.80,
                conf     => '0 1',
                field    => 'unitprice_tax_excluded'
            }
        );
        compare(
            {
                got      => $order_0_1->tax_value_on_receiving,
                expected => 7.38,
                conf     => '0 1',
                field    => 'tax_value'
            }
        );
    };
}

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"
    );
}

# format_for_editing
for my $currency_format ( qw( US FR ) ) {
    t::lib::Mocks::mock_preference( 'CurrencyFormat', $currency_format );
    is( Koha::Number::Price->new( 1234567 )->format_for_editing, '1234567.00', 'format_for_editing should return unformated integer part with 2 decimals' );
    is( Koha::Number::Price->new( 1234567.89 )->format_for_editing, '1234567.89', 'format_for_editing should return unformated integer part with 2 decimals' );
}