# Selima Website Content Management System
# ListPref.pm: The list preference form checker.

#  Copyright (c) 2004-2018 imacat.
#
#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#  See the License for the specific language governing permissions and
#  limitations under the License.

# Author: imacat <imacat@mail.imacat.idv.tw>
# First written: 2004-10-14

package Selima::Checker::ListPref;
use 5.008;
use strict;
use warnings;
use base qw(Selima::Checker);

use Selima::CallForm;
use Selima::ChkFunc;
use Selima::DataVars qw($DBH :forms);
use Selima::HTTP;
use Selima::ShortCut;

# new: Initialize the checker
sub new : method {
    local ($_, %_);
    my ($class, $self);
    ($class, @_) = @_;
    $_[1] = "userpref" if scalar(@_) < 2 || !defined $_[1];
    $self = $class->SUPER::new(@_);
    ${$self->{"maxlens"}}{"listsize"} = 4;
    return $self;
}

# _check_domain: Check the preference domain
sub _check_domain : method {
    local ($_, %_);
    my ($self, $form, $error);
    $self = $_[0];
    $form = $self->{"form"};
    # Check if it exists
    $error = $self->_missing("domain");
    return $error if defined $error;
    # Regularize it
    $self->_trim("domain");
    # Check if it is filled
    return {"msg"=>N_("Please fill in the preference domain.")}
        if $form->param("domain") eq "";
    # Check the length
    return {"msg"=>N_("This preference domain is too long.  (Max. length [#,_1])"),
            "margs"=>[${$self->{"maxlens"}}{"domain"}]}
        if length $form->param("domain") > ${$self->{"maxlens"}}{"domain"};
    # OK
    return;
}

# _check_listcols: Check the list columns
sub _check_listcols : method {
    local ($_, %_);
    my ($self, $listcols, $errmsg);
    $self = $_[0];
    # No need to check the validility.  Invalids are simply ignored.
    @_ = grep s/^listcols_//, $self->{"form"}->param;
    # Obtain the preference value
    $listcols = join " ", @_;
    # Skip if it is not filled
    return if $listcols eq "";
    # Check the length
    if (length "listcols" > ${$self->{"maxlens"}}{"name"}) {
        $errmsg = sprintf "Maximum preference name length too short (%d for \"%s\" %d)",
            ${$self->{"maxlens"}}{"name"}, "listcols", length "listcols";
        http_500 $errmsg;
    }
    if (length $listcols > ${$self->{"maxlens"}}{"value"}) {
        $errmsg = sprintf "Maximum preference value length too short (%d for \"%s\" %d)",
            ${$self->{"maxlens"}}{"name"}, "listcols", length $listcols;
        http_500 $errmsg;
    }
    # OK
    return;
}

# _check_listsize: Check the list size
sub _check_listsize : method {
    local ($_, %_);
    my ($self, $form, $error, $errmsg);
    $self = $_[0];
    $form = $self->{"form"};
    # Check if it exists
    $error = $self->_missing("listsize");
    return $error if defined $error;
    # Regularize it
    $self->_trim("listsize");
    # Check if it is filled
    return {"msg"=>N_("Please fill in the number of rows per page.")}
        if $form->param("listsize") eq "";
    # If there is any non-digit character
    return {"msg"=>N_("Please fill in a positive integer number of rows per page.")}
        unless $form->param("listsize") =~ /^[1-9][0-9]*$/;
    # Set to an integer
    $_ = $form->param("listsize");
    $_ += 0;
    $form->param("listsize", $_);
    # Check the length
    return {"msg"=>N_("This number of rows per page is too long.  (Max. length [#,_1])"),
            "margs"=>[${$self->{"maxlens"}}{"listsize"}]}
        if length $form->param("listsize") > ${$self->{"maxlens"}}{"listsize"};
    # Check the length
    if (length "listsize" > ${$self->{"maxlens"}}{"name"}) {
        $errmsg = sprintf "Maximum preference name length too short (%d for \"%s\" %d)",
            ${$self->{"maxlens"}}{"name"}, "listsize", length "listsize";
        http_500 $errmsg;
    }
    if (length $form->param("listsize") > ${$self->{"maxlens"}}{"value"}) {
        $errmsg = sprintf "Maximum preference value length too short (%d for \"%s\" %d)",
            ${$self->{"maxlens"}}{"name"}, "listsize", length $form->param("listsize");
        http_500 $errmsg;
    }
    # OK
    return;
}

return 1;