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use WWW::Mechanize::TreeBuilder;  # look_down()
use Test::WWW::Mechanize;
use LWP::Protocol::PSGI;
use Test::More;

use Data::Printer alias => 'ddp';
use Clone qw(clone);
use YAML::Tiny;
# use IO::All; # for debug use

use RequestForm::Test;
use RequestForm;
use Data::Dumper;

my $psgi_app = RequestForm::runner()->psgi_app;
LWP::Protocol::PSGI->register($psgi_app);

my $mech = Test::WWW::Mechanize->new;
WWW::Mechanize::TreeBuilder->meta->apply($mech);

my $args = form_tokens(); # warn $args;

my $config = YAML::Tiny->read( 'config.yml' ) or die $!; # ddp $config;
my $required_fields = $config->[0]->{validation}->{required};

my $src = patient_data(); # ddp $patient;
my $patient_1 = $src->[0]; # dpp $patient_0;
my $patient_2 = $src->[1]; # dpp $patient_1;

my $dbix = get_dbix();

{ # initialise patients table with patient #2 from patients.conf:
    my $info = $dbix->query("PRAGMA table_info(patients)")->hashes; # warn Dumper $info;
    my @cols = grep { $_ ne 'id' } map $_->{name}, @$info; # warn Dumper \@cols;

    my %h;
    $h{$_} = $patient_2->{$_} for @cols; # warn Dumper \%data;
    # dob from components:
    $h{dob} = join '-', @{$patient_2}{qw(year month day)}; # warn Dumper \%h;
    $dbix->insert('patients', \%h);
}

# initialise session with form tokens:
$mech->get_ok("http://localhost/?$args");                 # print_output($mech);

# submit invalid nhs_number:
$mech->get('http://localhost/');                          # print_output($mech);
$mech->field(nhs_number => $patient_1->{nhs_number} + 1);
$mech->submit_form();                                     # print_output($mech);
# p $mech->content( format => 'text' ); # span inside div:
$mech->text_contains('NHS number: invalid', 'OK: invalid nhs number detected');

# submit valid nhs_number:
$mech->get('http://localhost/');                          # print_output($mech);
$mech->field(nhs_number => $patient_1->{nhs_number});
$mech->submit_form();                                     # print_output($mech);
$mech->has_tag(
    p => 'No matching patient details found',
    'OK: nhs number submitted, no matching details found',
);

{ # submit invalid data set:
    # for each required field, clone data, delete key & test for validation failure:
    for my $field (@$required_fields) { # warn $field; # next;
        next if $field eq 'location_name'; # tt uses location_id not name (ajax function)

        my $clone = clone($patient_1); # dpp $clone;
        delete $clone->{$field};  # dpp $clone;

        $mech->post('http://localhost/', $clone);
            # io($FindBin::Bin . '/'.$field.'.htm')->print($mech->{content});
        $mech->has_tag(
            div => 'Missing',
            "OK: $field field missing",
        );
    }
}
{ # submit valid dataset:
    $mech->post('http://localhost/', $patient_1);         # print_output($mech);
    $mech->has_tag_like(
        p => qr/Form passed validation/,
        'OK: validation passed',
    );

    # put _skip_pds back in (not retained in form):
    $mech->field( _skip_pds => 1 );
    # submit form to generate pdf (or HTML for non-deployment env):
    $mech->submit_form();                                 # print_output($mech);

    ok( # barcode class table:
       $mech->look_down(_tag => 'table', class => 'hbc'), # table class="hbc"
       'OK: has barcode table element',
    );

    { # look for unique ref (eg 1428054818SILVERO):
        my $ref = uc( $patient_1->{last_name}
            . substr($patient_1->{first_name}, 0, 1) ); # ddp $ref;
        $mech->has_tag_like(
            td => qr/\d+$ref/,
            'OK: unique ref id found',
        );
    }
    # look for each required field (except special format fields):
    for my $field (@$required_fields) { # warn Dumper [$field, $patient_1->{$field}]; # next;
        # defer testing fields with special formatting (tested below):
        next if grep $field eq $_, # location_id not present at pdf generation stage:
            qw(last_name nhs_number day month year location_id);
        $mech->has_tag( span => $patient_1->{$field}, "OK: $field field found" );
    }

    { # look for special format fields (dob, last_name, nhs_number):
        my $nhs_number = join ' ', # amazingly, this works:
            ( $patient_1->{nhs_number} =~ /(\d{3})(\d{3})(\d{4})/ ); # ddp $nhs_number;
        my $last_name = uc $patient_1->{last_name};
        my $dob = sprintf '%02d-%02d-%s', @{$patient_1}{ qw(day month year) };

        my %formatted = (
            nhs_number => $nhs_number,
            last_name  => $last_name,
            dob        => $dob,
        );

        while ( my ($key, $val) = each %formatted ) {
            $mech->has_tag( span => $val, "OK: $key field found" );
        }
    }
}
{ # patient #2:
    $mech->get('http://localhost/');                      # print_output($mech);
    $mech->field(nhs_number => $patient_2->{nhs_number});
    $mech->submit_form();                                 # print_output($mech);

    $mech->text_contains(
        'Matching patient details found',
        'OK: nhs number submitted, matching details found',
    );
    # check loaded fields:
    my %formatted = (
        nhs_number => $patient_2->{nhs_number},
        last_name  => uc $patient_2->{last_name},
        first_name => $patient_2->{first_name},
        previous   => $patient_2->{previous},
        gender     => $patient_2->{gender},
        day        => $patient_2->{day},
        month      => $patient_2->{month},
        year       => $patient_2->{year},
    );

    while ( my ($key, $val) = each %formatted ) {
        is( $mech->field($key), $val, "OK: $key field set" );
    }
}

done_testing(53);