#!/usr/bin/env 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, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

use Modern::Perl;

use Test::More tests => 5;
use Test::Mojo;
use Test::Warn;

use t::lib::TestBuilder;
use t::lib::Mocks;

use C4::Auth;
use Koha::Cities;
use Koha::Database;

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

# FIXME: sessionStorage defaults to mysql, but it seems to break transaction handling
# this affects the other REST api tests
t::lib::Mocks::mock_preference( 'SessionStorage', 'tmp' );

my $remote_address = '127.0.0.1';
my $t              = Test::Mojo->new('Koha::REST::V1');

subtest 'list() tests' => sub {

    plan tests => 18;

    $schema->storage->txn_begin;

    Koha::Cities->search->delete;
    my ( $borrowernumber, $session_id ) =
      create_user_and_session( { authorized => 0 } );

    ## Authorized user tests
    # No cities, so empty array should be returned
    my $tx = $t->ua->build_tx( GET => '/api/v1/cities' );
    $tx->req->cookies( { name => 'CGISESSID', value => $session_id } );
    $tx->req->env( { REMOTE_ADDR => $remote_address } );
    $t->request_ok($tx)
      ->status_is(200)
      ->json_is( [] );

    my $city = $builder->build_object({ class => 'Koha::Cities' });

    # One city created, should get returned
    $tx = $t->ua->build_tx( GET => '/api/v1/cities' );
    $tx->req->cookies({ name => 'CGISESSID', value => $session_id });
    $tx->req->env({ REMOTE_ADDR => $remote_address });
    $t->request_ok($tx)
      ->status_is(200)
      ->json_is( [Koha::REST::V1::Cities::_to_api( $city->TO_JSON )] );

    my $another_city = $builder->build_object(
        { class => 'Koha::Cities', value => { city_country => $city->city_country } } );
    my $city_with_another_country = $builder->build_object({ class => 'Koha::Cities' });

    # Two cities created, they should both be returned
    $tx = $t->ua->build_tx( GET => '/api/v1/cities' );
    $tx->req->cookies( { name => 'CGISESSID', value => $session_id } );
    $tx->req->env( { REMOTE_ADDR => $remote_address } );
    $t->request_ok($tx)->status_is(200)
      ->json_is([Koha::REST::V1::Cities::_to_api($city->TO_JSON),
                 Koha::REST::V1::Cities::_to_api($another_city->TO_JSON),
                 Koha::REST::V1::Cities::_to_api($city_with_another_country->TO_JSON)
                 ] );

    # Filtering works, two cities sharing city_country
    $tx = $t->ua->build_tx( GET => "/api/v1/cities?country=" . $city->city_country );
    $tx->req->cookies({ name => 'CGISESSID', value => $session_id });
    $tx->req->env({ REMOTE_ADDR => $remote_address });
    $t->request_ok($tx)
      ->status_is(200)
      ->json_is([ Koha::REST::V1::Cities::_to_api($city->TO_JSON),
                  Koha::REST::V1::Cities::_to_api($another_city->TO_JSON)
                  ]);

    $tx = $t->ua->build_tx( GET => "/api/v1/cities?name=" . $city->city_name );
    $tx->req->cookies({ name => 'CGISESSID', value => $session_id });
    $tx->req->env({ REMOTE_ADDR => $remote_address });
    $t->request_ok($tx)
      ->status_is(200)
      ->json_is( [Koha::REST::V1::Cities::_to_api($city->TO_JSON)] );

    # Warn on unsupported query parameter
    $tx = $t->ua->build_tx( GET => '/api/v1/cities?city_blah=blah' );
    $tx->req->cookies({ name => 'CGISESSID', value => $session_id });
    $tx->req->env({ REMOTE_ADDR => $remote_address });
    $t->request_ok($tx)
      ->status_is(400)
      ->json_is( [{ path => '/query/city_blah', message => 'Malformed query string'}] );

    $schema->storage->txn_rollback;
};

subtest 'get() tests' => sub {

    plan tests => 6;

    $schema->storage->txn_begin;

    my $city = $builder->build_object({ class => 'Koha::Cities' });
    my ( $borrowernumber, $session_id ) = create_user_and_session({ authorized => 0 });

    my $tx = $t->ua->build_tx( GET => "/api/v1/cities/" . $city->id );
    $tx->req->cookies({ name => 'CGISESSID', value => $session_id });
    $tx->req->env({ REMOTE_ADDR => $remote_address });
    $t->request_ok($tx)
      ->status_is(200)
      ->json_is(Koha::REST::V1::Cities::_to_api($city->TO_JSON));

    my $city_to_delete = $builder->build_object({ class => 'Koha::Cities' });
    my $non_existent_id = $city_to_delete->id;
    $city_to_delete->delete;

    $tx = $t->ua->build_tx( GET => "/api/v1/cities/" . $non_existent_id );
    $tx->req->cookies({ name => 'CGISESSID', value => $session_id });
    $tx->req->env({ REMOTE_ADDR => $remote_address });
    $t->request_ok($tx)
      ->status_is(404)
      ->json_is( '/error' => 'City not found' );

    $schema->storage->txn_rollback;
};

subtest 'add() tests' => sub {

    plan tests => 17;

    $schema->storage->txn_begin;

    my ( $unauthorized_borrowernumber, $unauthorized_session_id ) =
      create_user_and_session( { authorized => 0 } );
    my ( $authorized_borrowernumber, $authorized_session_id ) =
      create_user_and_session( { authorized => 1 } );
    my $city = {
        name        => "City Name",
        state       => "City State",
        postal_code => "City Zipcode",
        country     => "City Country"
    };

    # Unauthorized attempt to write
    my $tx = $t->ua->build_tx( POST => "/api/v1/cities/" => json => $city );
    $tx->req->cookies({ name => 'CGISESSID', value => $unauthorized_session_id });
    $tx->req->env({ REMOTE_ADDR => $remote_address });
    $t->request_ok($tx)
      ->status_is(403);

    # Authorized attempt to write invalid data
    my $city_with_invalid_field = {
        blah        => "City Blah",
        state       => "City State",
        postal_code => "City Zipcode",
        country     => "City Country"
    };

    $tx = $t->ua->build_tx( POST => "/api/v1/cities/" => json => $city_with_invalid_field );
    $tx->req->cookies({ name => 'CGISESSID', value => $authorized_session_id });
    $tx->req->env( { REMOTE_ADDR => $remote_address } );
    $t->request_ok($tx)
      ->status_is(400)
      ->json_is(
        "/errors" => [
            {
                message => "Properties not allowed: blah.",
                path    => "/body"
            }
        ]
      );

    # Authorized attempt to write
    $tx = $t->ua->build_tx( POST => "/api/v1/cities/" => json => $city );
    $tx->req->cookies({ name => 'CGISESSID', value => $authorized_session_id });
    $tx->req->env({ REMOTE_ADDR => $remote_address });
    my $city_id =
      $t->request_ok($tx)
        ->status_is(200)
        ->json_is( '/name'        => $city->{name} )
        ->json_is( '/state'       => $city->{state} )
        ->json_is( '/postal_code' => $city->{postal_code} )
        ->json_is( '/country'     => $city->{country} )
        ->tx->res->json->{city_id};

    # Authorized attempt to create with null id
    $city->{city_id} = undef;
    $tx = $t->ua->build_tx( POST => "/api/v1/cities/" => json => $city );
    $tx->req->cookies({ name => 'CGISESSID', value => $authorized_session_id });
    $tx->req->env({ REMOTE_ADDR => $remote_address });
    $t->request_ok($tx)
      ->status_is(400)
      ->json_has('/errors');

    # Authorized attempt to create with existing id
    $city->{city_id} = $city_id;
    $tx = $t->ua->build_tx( POST => "/api/v1/cities/" => json => $city );
    $tx->req->cookies({ name => 'CGISESSID', value => $authorized_session_id });
    $tx->req->env({ REMOTE_ADDR => $remote_address });
    $t->request_ok($tx)
      ->status_is(400)
      ->json_is(
        "/errors" => [
            {
                message => "Read-only.",
                path    => "/body/city_id"
            }
        ]
    );

    $schema->storage->txn_rollback;
};

subtest 'update() tests' => sub {

    plan tests => 15;

    $schema->storage->txn_begin;

    my ( $unauthorized_borrowernumber, $unauthorized_session_id ) =
      create_user_and_session( { authorized => 0 } );
    my ( $authorized_borrowernumber, $authorized_session_id ) =
      create_user_and_session( { authorized => 1 } );

    my $city_id = $builder->build_object({ class => 'Koha::Cities' } )->id;

    # Unauthorized attempt to update
    my $tx = $t->ua->build_tx( PUT => "/api/v1/cities/$city_id" => json =>
          { name => 'New unauthorized name change' } );
    $tx->req->cookies({ name => 'CGISESSID', value => $unauthorized_session_id });
    $tx->req->env({ REMOTE_ADDR => $remote_address });
    $t->request_ok($tx)
      ->status_is(403);

    # Attempt partial update on a PUT
    my $city_with_missing_field = {
        name    => 'New name',
        state   => 'New state',
        country => 'New country'
    };

    $tx = $t->ua->build_tx(
        PUT => "/api/v1/cities/$city_id" => json => $city_with_missing_field );
    $tx->req->cookies({ name => 'CGISESSID', value => $authorized_session_id });
    $tx->req->env({ REMOTE_ADDR => $remote_address });
    $t->request_ok($tx)->status_is(400)
      ->json_is( "/errors" =>
          [ { message => "Missing property.", path => "/body/postal_code" } ]
      );

    # Full object update on PUT
    my $city_with_updated_field = {
        name        => "London",
        state       => "City State",
        postal_code => "City Zipcode",
        country     => "City Country"
    };

    $tx = $t->ua->build_tx( PUT => "/api/v1/cities/$city_id" => json => $city_with_updated_field );
    $tx->req->cookies({ name => 'CGISESSID', value => $authorized_session_id });
    $tx->req->env({ REMOTE_ADDR => $remote_address });
    $t->request_ok($tx)
      ->status_is(200)
      ->json_is( '/name' => 'London' );

    # Authorized attempt to write invalid data
    my $city_with_invalid_field = {
        blah        => "City Blah",
        state       => "City State",
        postal_code => "City Zipcode",
        country     => "City Country"
    };

    $tx = $t->ua->build_tx( PUT => "/api/v1/cities/$city_id" => json => $city_with_invalid_field );
    $tx->req->cookies({ name => 'CGISESSID', value => $authorized_session_id });
    $tx->req->env({ REMOTE_ADDR => $remote_address });
    $t->request_ok($tx)
      ->status_is(400)
      ->json_is(
        "/errors" => [
            {
                message => "Properties not allowed: blah.",
                path    => "/body"
            }
        ]
    );

    my $city_to_delete = $builder->build_object({ class => 'Koha::Cities' });
    my $non_existent_id = $city_to_delete->id;
    $city_to_delete->delete;

    $tx = $t->ua->build_tx( PUT => "/api/v1/cities/$non_existent_id" => json =>
          $city_with_updated_field );
    $tx->req->cookies({ name => 'CGISESSID', value => $authorized_session_id });
    $tx->req->env({ REMOTE_ADDR => $remote_address });
    $t->request_ok($tx)
      ->status_is(404);

    $schema->storage->txn_rollback;

    # Wrong method (POST)
    $city_with_updated_field->{city_id} = 2;

    $tx = $t->ua->build_tx(
        POST => "/api/v1/cities/$city_id" => json => $city_with_updated_field );
    $tx->req->cookies({ name => 'CGISESSID', value => $authorized_session_id });
    $tx->req->env({ REMOTE_ADDR => $remote_address });
    $t->request_ok($tx)
      ->status_is(404);
};

subtest 'delete() tests' => sub {

    plan tests => 7;

    $schema->storage->txn_begin;

    my ( $unauthorized_borrowernumber, $unauthorized_session_id ) =
      create_user_and_session( { authorized => 0 } );
    my ( $authorized_borrowernumber, $authorized_session_id ) =
      create_user_and_session( { authorized => 1 } );

    my $city_id = $builder->build_object({ class => 'Koha::Cities' })->id;

    # Unauthorized attempt to delete
    my $tx = $t->ua->build_tx( DELETE => "/api/v1/cities/$city_id" );
    $tx->req->cookies({ name => 'CGISESSID', value => $unauthorized_session_id });
    $tx->req->env({ REMOTE_ADDR => $remote_address });
    $t->request_ok($tx)
      ->status_is(403);

    $tx = $t->ua->build_tx( DELETE => "/api/v1/cities/$city_id" );
    $tx->req->cookies({ name => 'CGISESSID', value => $authorized_session_id });
    $tx->req->env({ REMOTE_ADDR => $remote_address });
    $t->request_ok($tx)
      ->status_is(200)
      ->content_is('""');

    $tx = $t->ua->build_tx( DELETE => "/api/v1/cities/$city_id" );
    $tx->req->cookies({ name => 'CGISESSID', value => $authorized_session_id });
    $tx->req->env({ REMOTE_ADDR => $remote_address });
    $t->request_ok($tx)
      ->status_is(404);

    $schema->storage->txn_rollback;
};

sub create_user_and_session {

    my $args  = shift;
    my $flags = ( $args->{authorized} ) ? $args->{authorized} : 0;
    my $dbh   = C4::Context->dbh;

    my $user = $builder->build(
        {
            source => 'Borrower',
            value  => {
                flags => $flags
            }
        }
    );

    # Create a session for the authorized user
    my $session = C4::Auth::get_session('');
    $session->param( 'number',   $user->{borrowernumber} );
    $session->param( 'id',       $user->{userid} );
    $session->param( 'ip',       '127.0.0.1' );
    $session->param( 'lasttime', time() );
    $session->flush;

    if ( $args->{authorized} ) {
        $dbh->do( "
            INSERT INTO user_permissions (borrowernumber,module_bit,code)
            VALUES (?,3,'parameters_remaining_permissions')", undef,
            $user->{borrowernumber} );
    }

    return ( $user->{borrowernumber}, $session->id );
}