package LIMS::Model::Roles::ScreenUpdate;

use Moose::Role;

has status_option_new => (
    is => 'ro',
    isa => 'LIMS::DB::LabTestStatusOption',
    lazy_build => 1,
);

use Data::Dumper;

#-------------------------------------------------------------------------------
# creates new lab_tests according to ScreenLabTest data for this screen_id
# doesn't overwrite existing tests
sub do_lab_tests {
    my $self = shift;
    my $data = shift;
    
    my %args = (
        query => [ screen_id => $data->{screen_id} ],
    );

    my $lab_tests
        = LIMS::DB::ScreenLabTest::Manager->get_screen_lab_tests(%args);

    foreach my $t (@$lab_tests) {
        $data->{lab_test_id} = $t->lab_test_id;
        $self->do_new_lab_test($data);
    }
}

#-------------------------------------------------------------------------------
sub do_new_lab_test { # shared by M::Request::new_request()
    my $self = shift;
    my $data = shift; # requires lab_test_id && user_id
    
    my $status_option = $self->status_option_new;
    
    LIMS::DB::RequestLabTestStatus->new(
        user_id          => $self->user_profile->{id},
        lab_test_id      => $data->{lab_test_id},
        request_id       => $data->{_request_id},
        status_option_id => $status_option->id,
    )->load_or_insert; # in case test already requested manually    
}

#-------------------------------------------------------------------------------
sub do_lab_test_details {
    my $self = shift;
    my $data = shift;
    
    my %args = (
        query => [ screen_id => $data->{screen_id} ],
    );

    my $lab_test_details
        = LIMS::DB::ScreenLabTestDetail::Manager->get_screen_lab_test_details(%args);
    
    foreach my $detail (@$lab_test_details) { # should only be 0 or 1:
        LIMS::DB::RequestLabSectionNote->new(
            details        => $detail->test_details,
            request_id     => $data->{_request_id},
            lab_section_id => $detail->lab_section_id,
        )->load_or_insert; # in case test_detail already exists
    }
}

#-------------------------------------------------------------------------------
sub do_auto_screen {
    my $self = shift;

    # get hashref or required data (keys = lab_tests, presentation & trial_name):
    my $auto_screen_data = $self->_get_auto_screen_data();
	return 0 unless %$auto_screen_data; # warn Dumper $auto_screen_data;

	my $data = $self->form_data; # warn Dumper $data;
    
    my $request_id = $data->{_request_id};
    my $user_id = $self->user_profile->{id};
    
    # first save presentation info:
    if ( my $presentation = $auto_screen_data->{presentation} ) {
        my $screen_id
            = LIMS::DB::Screen->new( description => $presentation)->load->id;
        my %data = (
            request_id => $request_id,
            screen_id  => $screen_id,
        );
        LIMS::DB::RequestInitialScreen->new(%data)->save;
    }
    # if trial name required:
    if ( my $trial_name = $auto_screen_data->{trial_name} ) {
        my $trial_id
            = LIMS::DB::ClinicalTrial->new( trial_name => $trial_name)->load->id;
        my %data = (
            request_id => $request_id,
            trial_id   => $trial_id,
        );
        LIMS::DB::RequestTrial->new(%data)->load_or_insert; # in case already set in form
    }
    # if lab tests generated:
    if ( my $lab_tests = $auto_screen_data->{lab_tests} ) {
        while ( my($lab_test_id, $test_name) = each %$lab_tests ) {
            my %data = (
                _request_id => $request_id,
                lab_test_id => $lab_test_id,
            );
            $self->do_new_lab_test(\%data);
        }
    }
    $self->add_to_actions('screened');
}

#-------------------------------------------------------------------------------
sub additional_options {
    my ($self, $action) = @_; # warn Dumper $action;
    
    my $data = $self->form_data; # warn Dumper $data;
    
    my $cfg = $data->{additional_options_config}->{$action} || return 0;

    # get 'screened_as' description:
    my $presentation = LIMS::DB::Screen->new(id => $data->{screen_id})->load;
    my $screened_as = $presentation->description; # warn $screened_as;
    
    # cycle through options to see if screened_as term triggers option flag: 
    while ( my($option, $d) = each %$cfg ) { # warn Dumper [$option, $d];
        # check option (eg DoI) exists and is active:
        my $o = LIMS::DB::AdditionalOption->new(option_name => $option)
            ->load(speculative => 1); # warn Dumper $o->as_tree;
        return 0 unless $o && $o->is_active eq 'yes';

        # set option flag if screened_as term matches one of list:
        if ( grep lc($screened_as) eq lc($_), @$d ) {
            my %data = (
                request_id => $data->{_request_id},
                option_id  => $o->id,
            ); # warn Dumper \%data;
            LIMS::DB::RequestOption->new(%data)->load_or_insert;
        }        
    }
}

#-------------------------------------------------------------------------------
sub _get_auto_screen_data {
    my $self = shift;

    my $form_data = $self->form_data; # warn Dumper $form_data;
    
    my $cfg = $form_data->{auto_screen_config}; # warn Dumper $cfg;

    my $request_id = $form_data->{_request_id};

    # get full request data (request, patient_case & patient tables) as a flat
    # data stucture, in case we need to find any mandatory field (eg nhs_number):
    my $request_data = do {
        my $r = LIMS::DB::Request->new(id => $request_id)
            ->load(with => 'patient_case.patient')->as_tree;
        LIMS::Local::Utils::traverse_hash($r); # uses Data::Traverse to flatten $r
    }; # warn Dumper $request_data;
    
    my %data = ();

    RULE: while ( my ($rule, $d) = each %$cfg ) {
        # check any mandatory request/patient fields (eg nhs_number):
        if ( my $required_fields = $d->{required_fields} ) {
            for my $field(@$required_fields) { # warn $field;
                # try to find required value in submitted form data, or else in
                # request/patient_case/patient data fields:
                next RULE unless $form_data->{$field} || $request_data->{$field};
            }
        }

        my $match_criteria = $d->{match_criteria}; # HoH
        
        # $match_criteria has 1 or more hashref entries:
        while ( my ($field, $value) = each %$match_criteria ) {
            # a match on specimen takes priority - may also generate trial name:
            if ( $field eq 'specimen_type' ) {
                # check specimen type(s) match:
                my $required_specimen_types = $value; # always arrayref
                for my $specimen(@$required_specimen_types) { # warn $specimen;
                    # may need to split specimens and test as array (eg BMA vs BMAT)
                    next RULE unless $form_data->{specimen} =~ /$specimen/i;
                }
            }
            elsif ( $field eq 'trial_name' ) {
                # get trial id from form, or skip rule:
                my $trial_id = $form_data->{trial_id} || next RULE;
                my $trial # get trials.trial_name for trial id:
                    = LIMS::DB::ClinicalTrial->new(id => $trial_id)->load;
                # skip rule unless submitted trial is in config:
                next RULE unless $value eq $trial->trial_name;
            }
            else {
                next RULE; # no matches
            }
        }
        
        # add config presentation & trial_name fields to %data (unless already set
        # from previous cycle through RULES loop, so ensure rules not inconsistent):
        map { $data{$_} ||= $d->{$_} } grep $d->{$_}, qw( presentation trial_name );
        # add lab tests:
        if ( my $lab_tests = $d->{lab_tests} ) {
            $data{lab_tests}{$_} = $lab_tests->{$_} for keys %$lab_tests;
        }
    } # warn Dumper \%data;
    return \%data;
}

#-------------------------------------------------------------------------------
sub _build_status_option_new {
    my $self = shift;
    
    my $status_option  
        = LIMS::DB::LabTestStatusOption->new(description => 'new')->load;
        
    return $status_option;
}

1;