#!/usr/bin/perl

# This file is part of Koha.
#
# 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 C4::Context;
use Mail::Sendmail;
use C4::Letters;
use Koha::Database;
use Koha::Patrons;
use t::lib::TestBuilder;

use Test::More tests => 22;
use Test::MockModule;
use Test::Warn;
use Carp;

my %mail;
my $module = Test::MockModule->new('Mail::Sendmail');
$module->mock(
    'sendmail',
    sub {
        carp 'Fake sendmail!';
        %mail = @_;
    }
);

use_ok('Koha::Patron::Password::Recovery');

my $schema = Koha::Database->new()->schema();
$schema->storage->txn_begin();

my $dbh = C4::Context->dbh;
$dbh->{RaiseError} = 1;

#
# Start with fresh data
#
my $builder = t::lib::TestBuilder->new;
my $borrowernumber1 = '2000000000';
my $borrowernumber2 = '2000000001';
my $borrowernumber3 = '2000000002';
my $userid1 = "I83MFItzRpGPxD3vW0";
my $userid2 = "Gh5t43980hfSAOcvne";
my $userid3 = "adsfada80hfSAOcvne";
my $email1  = $userid1 . '@koha-community.org';
my $email2  = $userid2 . '@koha-community.org';
my $email3  = $userid3 . '@koha-community.org';
my $uuid1   = "ABCD1234";
my $uuid2   = "WXYZ0987";
my $uuid3   = "LMNO4561";

my $patron_category = $builder->build({ source => 'Category' });
my $branch = $builder->build({
    source => 'Branch',
    value => {
        branchreturnpath => $email1,
    },
});

$schema->resultset('BorrowerPasswordRecovery')->delete_all();

$schema->resultset('Borrower')->create(
    {
        borrowernumber  => $borrowernumber1,
        surname         => '',
        address         => '',
        city            => '',
        userid          => $userid1,
        email           => $email1,
        categorycode    => $patron_category->{categorycode},
        branchcode      => $branch->{branchcode},
    }
);
$schema->resultset('Borrower')->create(
    {
        borrowernumber  => $borrowernumber2,
        surname         => '',
        address         => '',
        city            => '',
        userid          => $userid2,
        email           => $email2,
        categorycode    => $patron_category->{categorycode},
        branchcode      => $branch->{branchcode},
    }
);
$schema->resultset('Borrower')->create(
    {
        borrowernumber => $borrowernumber3,
        surname        => '',
        address        => '',
        city           => '',
        userid         => $userid3,
        email          => $email3,
        categorycode   => $patron_category->{categorycode},
        branchcode     => $branch->{branchcode},
    }
);

$schema->resultset('BorrowerPasswordRecovery')->create(
    {
        borrowernumber => $borrowernumber1,
        uuid           => $uuid1,
        valid_until    => DateTime->now( time_zone => C4::Context->tz() )->add( days => 2 )->datetime()
    }
);
$schema->resultset('BorrowerPasswordRecovery')->create(
    {
        borrowernumber => $borrowernumber2,
        uuid           => $uuid2,
        valid_until    => DateTime->now( time_zone => C4::Context->tz() )->subtract( days => 2 )->datetime()
    }
);
$schema->resultset('BorrowerPasswordRecovery')->create(
    {
        borrowernumber => $borrowernumber3,
        uuid           => $uuid3,
        valid_until    => DateTime->now( time_zone => C4::Context->tz() )->subtract( days => 3 )->datetime()
    }
);


can_ok( "Koha::Patron::Password::Recovery", qw(ValidateBorrowernumber GetValidLinkInfo SendPasswordRecoveryEmail CompletePasswordRecovery) );

############################################################
# Koha::Patron::Password::Recovery::ValidateBorrowernumber #
############################################################

ok(   Koha::Patron::Password::Recovery::ValidateBorrowernumber($borrowernumber1), "[ValidateBorrowernumber] Borrower has a password recovery entry" );
ok( ! Koha::Patron::Password::Recovery::ValidateBorrowernumber($borrowernumber2), "[ValidateBorrowernumber] Borrower's number is not found; password recovery entry is expired" );
ok( ! Koha::Patron::Password::Recovery::ValidateBorrowernumber(9999), "[ValidateBorrowernumber] Borrower has no password recovery entry" );

######################################################
# Koha::Patron::Password::Recovery::GetValidLinkInfo #
######################################################

my ($bnum1, $uname1) = Koha::Patron::Password::Recovery::GetValidLinkInfo($uuid1);
my ($bnum2, $uname2) = Koha::Patron::Password::Recovery::GetValidLinkInfo($uuid2);
my ($bnum3, $uname3) = Koha::Patron::Password::Recovery::GetValidLinkInfo("THISISANINVALIDUUID");

is( $bnum1, $borrowernumber1, "[GetValidLinkInfo] Borrower has a valid link" );
is( $uname1, $userid1, "[GetValidLinkInfo] Borrower's username is fetched when a valid link is found" );
ok( ! defined($bnum2), "[GetValidLinkInfo] Borrower's link is no longer valid; entry is expired" );
ok( ! defined($bnum3), "[GetValidLinkInfo] Invalid UUID returns no borrowernumber" );

##############################################################
# Koha::Patron::Password::Recovery::CompletePasswordRecovery #
##############################################################

is( Koha::Patron::Password::Recovery::CompletePasswordRecovery($uuid1), 3, "[CompletePasswordRecovery] Completing a password recovery deletes the used entry" );

$schema->resultset('BorrowerPasswordRecovery')->create(
    {
        borrowernumber => $borrowernumber2,
        uuid           => $uuid2,
        valid_until    => DateTime->now( time_zone => C4::Context->tz() )->subtract( days => 2 )->datetime()
    }
);

ok( Koha::Patron::Password::Recovery::CompletePasswordRecovery($uuid2) == 1, "[CompletePasswordRecovery] An expired or invalid UUID purges expired entries" );
ok( Koha::Patron::Password::Recovery::CompletePasswordRecovery($uuid2) == 0, "[CompletePasswordRecovery] Returns 0 on a clean table" );

###################################################################
# Koha::Patron::Password::Recovery::DeleteExpiredPasswordRecovery #
###################################################################

$schema->resultset('BorrowerPasswordRecovery')->create(
    {
        borrowernumber => $borrowernumber3,
        uuid           => $uuid3,
        valid_until    => DateTime->now( time_zone => C4::Context->tz() )->subtract( days => 3 )->datetime()
    }
);

ok( Koha::Patron::Password::Recovery::DeleteExpiredPasswordRecovery($borrowernumber3) == 1, "[DeleteExpiredPasswordRecovery] we can delete the unused entry" );
ok( Koha::Patron::Password::Recovery::DeleteExpiredPasswordRecovery($borrowernumber3) == 0, "[DeleteExpiredPasswordRecovery] Returns 0 on a clean table" );

###############################################################
# Koha::Patron::Password::Recovery::SendPasswordRecoveryEmail #
###############################################################

my $borrower = Koha::Patrons->search( { userid => $userid1 } )->next;
my $success;
warning_like {
    $success = Koha::Patron::Password::Recovery::SendPasswordRecoveryEmail($borrower, $email1, 0); }
    qr/Fake sendmail!/,
    '[SendPasswordRecoveryEmail] expecting fake sendmail';
ok( $success == 1, '[SendPasswordRecoveryEmail] Returns 1 on success');

my $letters = C4::Letters::GetQueuedMessages( { borrowernumber => $borrowernumber1, limit => 99 } );
ok( scalar @$letters == 1, "[SendPasswordRecoveryEmail] There is a letter in the queue for our borrower");

my $bpr = $schema->resultset('BorrowerPasswordRecovery')->search( { borrowernumber => $borrowernumber1 } );
my $tempuuid1 = $bpr->next->uuid;

warning_like {
    Koha::Patron::Password::Recovery::SendPasswordRecoveryEmail($borrower, $email1, 1); }
    qr/Fake sendmail!/,
    '[SendPasswordRecoveryEmail] expecting fake sendmail';

$bpr = $schema->resultset('BorrowerPasswordRecovery')->search( { borrowernumber => $borrowernumber1 } );
my $tempuuid2 = $bpr->next->uuid;

$letters = C4::Letters::GetQueuedMessages( { borrowernumber => $borrowernumber1, limit => 99 } );

ok( $tempuuid1 ne $tempuuid2, "[SendPasswordRecoveryEmail] UPDATE == ON changes uuid in the database and updates the expirydate");
ok( scalar @$letters == 2, "[SendPasswordRecoveryEmail] UPDATE == ON sends a new letter with updated uuid");

foreach my $letter (@$letters) {
    ok( $letter->{status} eq 'sent',
        'Test SendPasswordRecoverEmail sent due to TestBuilder Sender being a valid email address as expected.' );
}

$schema->storage->txn_rollback();