# --
# Copyright (C) 2001-2017 OTRS AG, http://otrs.com/
# --
# This software comes with ABSOLUTELY NO WARRANTY. For details, see
# the enclosed file COPYING for license information (AGPL). If you
# did not receive this file, see http://www.gnu.org/licenses/agpl.txt.
# --

package Kernel::System::DynamicField::Driver::TextArea;

use strict;
use warnings;

use Kernel::System::VariableCheck qw(:all);

use base qw(Kernel::System::DynamicField::Driver::BaseText);

our @ObjectDependencies = (
    'Kernel::Config',
    'Kernel::System::DynamicFieldValue',
    'Kernel::System::Main',
);

=head1 NAME

Kernel::System::DynamicField::Driver::TextArea

=head1 SYNOPSIS

DynamicFields TextArea Driver delegate

=head1 PUBLIC INTERFACE

This module implements the public interface of L<Kernel::System::DynamicField::Backend>.
Please look there for a detailed reference of the functions.

=over 4

=item new()

usually, you want to create an instance of this
by using Kernel::System::DynamicField::Backend->new();

=cut

sub new {
    my ( $Type, %Param ) = @_;

    # allocate new hash for object
    my $Self = {};
    bless( $Self, $Type );

    # set the maximum lenght for the textarea fields to still be a searchable field in some
    # databases
    $Self->{MaxLength} = 3800;

    # set field behaviors
    $Self->{Behaviors} = {
        'IsACLReducible'               => 0,
        'IsNotificationEventCondition' => 1,
        'IsSortable'                   => 0,
        'IsFiltrable'                  => 0,
        'IsStatsCondition'             => 1,
        'IsCustomerInterfaceCapable'   => 1,
    };

    # get the Dynamic Field Backend custmom extensions
    my $DynamicFieldDriverExtensions
        = $Kernel::OM->Get('Kernel::Config')->Get('DynamicFields::Extension::Driver::TextArea');

    EXTENSION:
    for my $ExtensionKey ( sort keys %{$DynamicFieldDriverExtensions} ) {

        # skip invalid extensions
        next EXTENSION if !IsHashRefWithData( $DynamicFieldDriverExtensions->{$ExtensionKey} );

        # create a extension config shortcut
        my $Extension = $DynamicFieldDriverExtensions->{$ExtensionKey};

        # check if extension has a new module
        if ( $Extension->{Module} ) {

            # check if module can be loaded
            if (
                !$Kernel::OM->Get('Kernel::System::Main')->RequireBaseClass( $Extension->{Module} )
                )
            {
                die "Can't load dynamic fields backend module"
                    . " $Extension->{Module}! $@";
            }
        }

        # check if extension contains more behabiors
        if ( IsHashRefWithData( $Extension->{Behaviors} ) ) {

            %{ $Self->{Behaviors} } = (
                %{ $Self->{Behaviors} },
                %{ $Extension->{Behaviors} }
            );
        }
    }

    return $Self;
}

sub EditFieldRender {
    my ( $Self, %Param ) = @_;

    # take config from field config
    my $FieldConfig = $Param{DynamicFieldConfig}->{Config};
    my $FieldName   = 'DynamicField_' . $Param{DynamicFieldConfig}->{Name};
    my $FieldLabel  = $Param{DynamicFieldConfig}->{Label};

    my $Value = '';

    # set the field value or default
    if ( $Param{UseDefaultValue} ) {
        $Value = ( defined $FieldConfig->{DefaultValue} ? $FieldConfig->{DefaultValue} : '' );
    }
    $Value = $Param{Value} // $Value;

    # extract the dynamic field value form the web request
    my $FieldValue = $Self->EditFieldValueGet(
        %Param,
    );

    # set values from ParamObject if present
    if ( defined $FieldValue ) {
        $Value = $FieldValue;
    }

    # set the rows number
    my $RowsNumber = defined $FieldConfig->{Rows} && $FieldConfig->{Rows} ? $FieldConfig->{Rows} : '7';

    # set the cols number
    my $ColsNumber = defined $FieldConfig->{Cols} && $FieldConfig->{Cols} ? $FieldConfig->{Cols} : '42';

    # check and set class if necessary
    my $FieldClass = 'DynamicFieldTextArea';
    if ( defined $Param{Class} && $Param{Class} ne '' ) {
        $FieldClass .= ' ' . $Param{Class};
    }

    # set field as mandatory
    if ( $Param{Mandatory} ) {
        $FieldClass .= ' Validate_Required';
    }

    # set error css class
    if ( $Param{ServerError} ) {
        $FieldClass .= ' ServerError';
    }

    # set validation class for maximum characters
    $FieldClass .= ' Validate_MaxLength';

    my $ValueEscaped = $Param{LayoutObject}->Ascii2Html(
        Text => $Value,
    );

    my $FieldLabelEscaped = $Param{LayoutObject}->Ascii2Html(
        Text => $FieldLabel,
    );

    # create field HTML
    # the XHTML definition does not support maxlenght attribute for a textarea field,
    # we use data-maxlength instead
    # Notice that some browsers count new lines \n\r as only 1 character. In these cases the
    # validation framework might generate an error while the user is still capable to enter text in the
    # textarea. Otherwise the maxlenght property will prevent to enter more text than the maximum.
    my $MaxLength = $Param{MaxLength} // $Self->{MaxLength};
    my $HTMLString = <<"EOF";
<textarea class="$FieldClass" id="$FieldName" name="$FieldName" title="$FieldLabelEscaped" rows="$RowsNumber" cols="$ColsNumber" data-maxlength="$MaxLength">$ValueEscaped</textarea>
EOF

    # for client side validation
    my $DivID = $FieldName . 'Error';

    my $ErrorMessage1 = $Param{LayoutObject}->{LanguageObject}->Translate("This field is required or");
    my $ErrorMessage2 = $Param{LayoutObject}->{LanguageObject}->Translate("The field content is too long!");
    my $ErrorMessage3
        = $Param{LayoutObject}->{LanguageObject}->Translate( "Maximum size is %s characters.", $MaxLength );

    if ( $Param{Mandatory} ) {
        $HTMLString .= <<"EOF";
<div id="$DivID" class="TooltipErrorMessage">
    <p>
        $ErrorMessage1 $ErrorMessage2 $ErrorMessage3
    </p>
</div>
EOF
    }
    else {
        $HTMLString .= <<"EOF";
<div id="$DivID" class="TooltipErrorMessage">
    <p>
        $ErrorMessage2 $ErrorMessage3
    </p>
</div>
EOF
    }

    if ( $Param{ServerError} ) {

        my $ErrorMessage = $Param{ErrorMessage} || 'This field is required.';
        $ErrorMessage = $Param{LayoutObject}->{LanguageObject}->Translate($ErrorMessage);
        my $DivID = $FieldName . 'ServerError';

        # for server side validation
        $HTMLString .= <<"EOF";
<div id="$DivID" class="TooltipErrorMessage">
    <p>
        $ErrorMessage
    </p>
</div>
EOF
    }

    # call EditLabelRender on the common Driver
    my $LabelString = $Self->EditLabelRender(
        %Param,
        Mandatory => $Param{Mandatory} || '0',
        FieldName => $FieldName,
    );

    my $Data = {
        Field => $HTMLString,
        Label => $LabelString,
    };

    return $Data;
}

sub EditFieldValueValidate {
    my ( $Self, %Param ) = @_;

    # get the field value from the http request
    my $Value = $Self->EditFieldValueGet(
        DynamicFieldConfig => $Param{DynamicFieldConfig},
        ParamObject        => $Param{ParamObject},

        # not necessary for this Driver but place it for consistency reasons
        ReturnValueStructure => 1,
    );

    my $ServerError;
    my $ErrorMessage;

    # perform necessary validations
    if ( $Param{Mandatory} && $Value eq '' ) {
        $ServerError = 1;
    }
    elsif ( length $Value > $Self->{MaxLength} ) {
        $ServerError  = 1;
        $ErrorMessage = "The field content is too long! Maximum size is $Self->{MaxLength} characters.";
    }
    elsif (
        IsArrayRefWithData( $Param{DynamicFieldConfig}->{Config}->{RegExList} )
        && ( $Param{Mandatory} || ( !$Param{Mandatory} && $Value ne '' ) )
        )
    {

        # check regular expressions
        my @RegExList = @{ $Param{DynamicFieldConfig}->{Config}->{RegExList} };

        REGEXENTRY:
        for my $RegEx (@RegExList) {

            if ( $Value !~ $RegEx->{Value} ) {
                $ServerError  = 1;
                $ErrorMessage = $RegEx->{ErrorMessage};
                last REGEXENTRY;
            }
        }
    }

    # create resulting structure
    my $Result = {
        ServerError  => $ServerError,
        ErrorMessage => $ErrorMessage,
    };

    return $Result;
}

sub DisplayValueRender {
    my ( $Self, %Param ) = @_;

    # set HTMLOuput as default if not specified
    if ( !defined $Param{HTMLOutput} ) {
        $Param{HTMLOutput} = 1;
    }

    # get raw Title and Value strings from field value
    my $Value = defined $Param{Value} ? $Param{Value} : '';
    my $Title = $Value;

    # HTMLOuput transformations
    if ( $Param{HTMLOutput} ) {

        $Value = $Param{LayoutObject}->Ascii2Html(
            Text           => $Value,
            HTMLResultMode => 1,
            Max            => $Param{ValueMaxChars} || '',
        );

        $Title = $Param{LayoutObject}->Ascii2Html(
            Text => $Title,
            Max  => $Param{TitleMaxChars} || '',
        );
    }
    else {
        if ( $Param{ValueMaxChars} && length($Value) > $Param{ValueMaxChars} ) {
            $Value = substr( $Value, 0, $Param{ValueMaxChars} ) . '...';
        }
        if ( $Param{TitleMaxChars} && length($Title) > $Param{TitleMaxChars} ) {
            $Title = substr( $Title, 0, $Param{TitleMaxChars} ) . '...';
        }
    }

    # this field type does not support the Link Feature
    my $Link;

    # create return structure
    my $Data = {
        Value => $Value,
        Title => $Title,
        Link  => $Link,
    };

    return $Data;
}

sub SearchFieldRender {
    my ( $Self, %Param ) = @_;

    # take config from field config
    my $FieldConfig = $Param{DynamicFieldConfig}->{Config};
    my $FieldName   = 'Search_DynamicField_' . $Param{DynamicFieldConfig}->{Name};
    my $FieldLabel  = $Param{DynamicFieldConfig}->{Label};

    # set the field value
    my $Value = ( defined $Param{DefaultValue} ? $Param{DefaultValue} : '' );

    # get the field value, this function is always called after the profile is loaded
    my $FieldValue = $Self->SearchFieldValueGet(%Param);

    # set values from profile if present
    if ( defined $FieldValue ) {
        $Value = $FieldValue;
    }

    # check if value is an arrayref (GenericAgent Jobs and NotificationEvents)
    if ( IsArrayRefWithData($Value) ) {
        $Value = @{$Value}[0];
    }

    # check and set class if necessary
    my $FieldClass = 'DynamicFieldText';

    my $ValueEscaped = $Param{LayoutObject}->Ascii2Html(
        Text => $Value,
    );

    my $FieldLabelEscaped = $Param{LayoutObject}->Ascii2Html(
        Text => $FieldLabel,
    );

    my $HTMLString = <<"EOF";
<input type="text" class="$FieldClass" id="$FieldName" name="$FieldName" title="$FieldLabelEscaped" value="$ValueEscaped" />
EOF

    # call EditLabelRender on the common Driver
    my $LabelString = $Self->EditLabelRender(
        %Param,
        FieldName => $FieldName,
    );

    my $Data = {
        Field => $HTMLString,
        Label => $LabelString,
    };

    return $Data;
}

1;

=back

=head1 TERMS AND CONDITIONS

This software is part of the OTRS project (L<http://otrs.org/>).

This software comes with ABSOLUTELY NO WARRANTY. For details, see
the enclosed file COPYING for license information (AGPL). If you
did not receive this file, see L<http://www.gnu.org/licenses/agpl.txt>.

=cut
