#!/usr/bin/perl
#
# This file is part of Koha.
#
# Copyright (C) 2018  Andreas Jonsson <andreas.jonsson@kreablo.se>
#
# Koha is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# Koha is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Koha; if not, see <http://www.gnu.org/licenses>.

use Modern::Perl;

use Test::More tests => 2;
use t::lib::TestBuilder;
use t::lib::Mocks;
use File::Spec;
use File::Basename;

use Koha::DateUtils;

my $scriptDir = dirname(File::Spec->rel2abs( __FILE__ ));

my $schema  = Koha::Database->new->schema;
my $dbh = C4::Context->dbh;

my $library1;
my $library2;
my $library3;
my $borrower;

sub build_test_objects {

    # Set only to avoid exception.
    t::lib::Mocks::mock_preference('dateformat', 'metric');

    my $builder = t::lib::TestBuilder->new;

    $library1 = $builder->build({
        source => 'Branch',
    });
    $library2 = $builder->build({
        source => 'Branch',
    });
    $library3 = $builder->build({
        source => 'Branch',
    });
    $borrower = $builder->build({
        source => 'Borrower',
        value => {
            branchcode => $library1->{branchcode},
        }
    });
    $dbh->do(<<DELETESQL);
DELETE FROM letter
 WHERE module='circulation'
   AND code = 'PREDUEDGST'
   AND message_transport_type='email'
   AND branchcode=''
DELETESQL

    $dbh->do(<<DELETESQL);
DELETE FROM message_attributes WHERE message_name = 'Advance_Notice'
DELETESQL

    my $message_attribute = $builder->build({
        source => 'MessageAttribute',
        value => {
            message_name => 'Advance_Notice'
        }
    });

    my $letter = $builder->build({
        source => 'Letter',
        value => {
            module => 'circulation',
            code => 'PREDUEDGST',
            branchcode => '',
            message_transport_type => 'email',
            lang => 'default',
            is_html => 0,
            content => '<<count>> <<branches.branchname>>'
        }
    });
    my $borrower_message_preference = $builder->build({
        source => 'BorrowerMessagePreference',
        value => {
            borrowernumber => $borrower->{borrowernumber},
            wants_digest => 1,
            days_in_advance => 1,
            message_attribute_id => $message_attribute->{message_attribute_id}
        }
    });

    my $borrower_message_transport_preference = $builder->build({
        source => 'BorrowerMessageTransportPreference',
        value => {
            borrower_message_preference_id => $borrower_message_preference->{borrower_message_preference_id},
            message_transport_type => 'email'
        }
    });

    #Adding a second preference for a notice that isn't defined, should just be skipped
    my $borrower_message_transport_preference_1 = $builder->build({
        source => 'BorrowerMessageTransportPreference',
        value => {
            borrower_message_preference_id => $borrower_message_preference->{borrower_message_preference_id},
            message_transport_type => 'phone'
        }
    });

    my $item1 = $builder->build_sample_item;
    my $item2 = $builder->build_sample_item;
    my $item3 = $builder->build_sample_item;
    my $now = dt_from_string();
    my $tomorrow = $now->add(days => 1)->strftime('%F');

    my $issue1 = $builder->build({
        source => 'Issue',
        value => {
            date_due => $tomorrow,
            itemnumber => $item1->itemnumber,
            branchcode => $library2->{branchcode},
            borrowernumber => $borrower->{borrowernumber},
            returndate => undef
        }
    });

    my $issue2 = $builder->build({
        source => 'Issue',
        value => {
            date_due => $tomorrow,
            itemnumber => $item2->itemnumber,
            branchcode => $library3->{branchcode},
            borrowernumber => $borrower->{borrowernumber},
            returndate => undef
        }
                                 });
    my $issue3 = $builder->build({
        source => 'Issue',
        value => {
            date_due => $tomorrow,
            itemnumber => $item3->itemnumber,
            branchcode => $library3->{branchcode},
            borrowernumber => $borrower->{borrowernumber},
            returndate => undef
        }
    });

    C4::Context->set_preference('EnhancedMessagingPreferences', 1);
}

sub run_script {
    my $script = shift;
    local @ARGV = @_;

    # We simulate script execution by evaluating the script code in the context
    # of this unit test.

    eval $script; ## no critic (StringyEval)

    die $@ if $@;
}

my $scriptContent = '';
my $scriptFile = "$scriptDir/../../../misc/cronjobs/advance_notices.pl";
open my $scriptfh, "<", $scriptFile or die "Failed to open $scriptFile: $!";

while (<$scriptfh>) {
    $scriptContent .= $_;
}
close $scriptfh;

my $sthmq = $dbh->prepare('SELECT * FROM message_queue WHERE borrowernumber = ?');

subtest 'Default behaviour tests' => sub {

    plan tests => 3;

    $schema->storage->txn_begin;

    build_test_objects();

    run_script($scriptContent, 'advanced_notices.pl', '-c');

    $sthmq->execute($borrower->{borrowernumber});

    my $messages = $sthmq->fetchall_hashref('message_id');

    is(scalar(keys %$messages), 1, 'There is one message in the queue');

    for my $message (keys %$messages) {
        $messages->{$message}->{content} =~ /(\d+) (.*)/;
        my $count = $1;
        my $branchname = $2;

        is ($count, '3', 'Issue count is 3');
        is ($branchname, $library1->{branchname}, 'Branchname is that of borrowers home branch.');
    }

    $schema->storage->txn_rollback;
};

subtest '--digest-per-branch tests' => sub {

    plan tests => 5;

    $schema->storage->txn_begin;

    build_test_objects();

    run_script($scriptContent, 'advanced_notices.pl', '-c', '-digest-per-branch');

    $sthmq->execute($borrower->{borrowernumber});

    my $messages = $sthmq->fetchall_hashref('message_id');

    is(scalar(keys %$messages), 2, 'There are two messages in the queue');

    my %expected = (
        $library2->{branchname} => {
            count => 1,
        },
        $library3->{branchname} => {
            count => 2,
        }
     );

    my %expected_branchnames = (
        $library2->{branchname} => 1,
        $library3->{branchname} => 1
    );

    my $i = 0;
    for my $message (keys %$messages) {
        $messages->{$message}->{content} =~ /(\d+) (.*)/;
        my $count = $1;
        my $branchname = $2;

        ok ($expected_branchnames{$branchname}, 'Branchname is that of expected issuing branch.');

        $expected_branchnames{$branchname} = 0;

        is ($count, $expected{$branchname}->{count}, 'Issue count is ' . $expected{$branchname}->{count});

        $i++;
    }

    $schema->storage->txn_rollback;
};