# Selima Website Content Management System
# UserPref.pm: The user 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::UserPref;
use 5.008;
use strict;
use warnings;
use base qw(Selima::Checker);

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

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

# check: Run a list of checks
sub check : method {
    local ($_, %_);
    my ($self, $error, @cols);
    ($self, @cols) = @_;
    # Run the parent method first
    $error = $self->SUPER::check(@cols);
    return $error if defined $error;
    # See if we need to check the duplicates.  Check it in the end.
    %_ = map { $_ => 1 } @cols;
    if (exists $_{"usr"} && exists $_{"domain"} && exists $_{"name"}) {
        $error = $self->__check_dup();
        return $error if defined $error;
    }
    return;
}

# _check_usr: Check the user
sub _check_usr : method {
    local ($_, %_);
    my ($self, $form, $error);
    $self = $_[0];
    $form = $self->{"form"};
    # "everyone not set" has a different form context
    return {"msg"=>N_("Please select the user.")}
        if $self->_missing("everyone");
    # Regularize it
    $self->_trim("everyone");
    # Check the option value
    return {"msg"=>N_("This option is invalid.  Please select a proper user.")}
        unless $form->param("everyone") =~ /^(?:true|false)$/;
    # Check the user if not everyone
    if ($form->param("everyone") eq "false") {
        $error = $self->SUPER::_check_usr;
        return $error if defined $error;
    }
    # OK
    return;
}

# _check_domain: Check the domain
sub _check_domain : method {
    local ($_, %_);
    my ($self, $form, $error);
    $self = $_[0];
    $form = $self->{"form"};
    # "everywhere not set" has a different form context
    return {"msg"=>N_("Please set the preference domain.")}
        if $self->_missing("everywhere");
    # Regularize it
    $self->_trim("everywhere");
    # Check the option value
    return {"msg"=>N_("This option is invalid.  Please set a proper preference domain.")}
        unless $form->param("everywhere") =~ /^(?:true|false)$/;
    # Check the domain if not everywhere
    if ($form->param("everywhere") eq "false") {
        # 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_name: Check the preference name
sub _check_name : method {
    local ($_, %_);
    my ($self, $form, $error);
    $self = $_[0];
    $form = $self->{"form"};
    # Check if it exists
    $error = $self->_missing("name");
    return $error if defined $error;
    # Regularize it
    $self->_trim("name");
    # Check if it is filled
    return {"msg"=>N_("Please fill in the preference name.")}
        if $form->param("name") eq "";
    # Check the length
    return {"msg"=>N_("This preference name is too long.  (Max. length [#,_1])"),
            "margs"=>[${$self->{"maxlens"}}{"name"}]}
        if length $form->param("name") > ${$self->{"maxlens"}}{"name"};
    # OK
    return;
}

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

# __check_dup: Check if this item is duplicated
sub __check_dup : method {
    local ($_, %_);
    my ($self, $form, $error, $sth, $sql);
    $self = $_[0];
    $form = $self->{"form"};
    @_ = qw();
    if ($form->param("everyone") eq "true") {
        push @_, "usr IS NULL";
    } else {
        push @_, "usr=" . $form->param("usr");
    }
    if ($form->param("everywhere") eq "true") {
        push @_, "domain IS NULL";
    } else {
        push @_, "domain=" . $DBH->quote($form->param("domain"));
    }
    push @_, "name=" . $DBH->quote($form->param("name"));
    push @_, "sn!=" . $self->{"sn"}
        if $self->{"iscur"};
    $sql = "SELECT * FROM " . $DBH->quote_identifier($self->{"table"})
        . " WHERE " . join(" AND ", @_) . ";\n";
    $sth = $DBH->prepare($sql);
    $sth->execute;
    return {"msg"=>N_("This user preference already exists.  You cannot create a duplicated one.")}
        if $sth->rows > 0;
    return;
}

# _redir_selusr: Suspend and move to the user selection form
sub _redir_selusr : method {
    local ($_, %_);
    my $self;
    $self = $_[0];
    # Skip if not requested
    return if $self->_missing("selusr");
    call_form FORM_USERS, undef, "import_selusr";
}

# _redir_delusr: Remove the user
sub _redir_delusr : method {
    local ($_, %_);
    my $self;
    $self = $_[0];
    # Skip if not requested
    return if $self->_missing("delusr");
    $self->{"form"}->delete("usr");
    success_redirect undef;
}

return 1;