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Filename : check_maxmem_against_domains_count
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#!/usr/local/cpanel/3rdparty/bin/perl

# cpanel - scripts/check_maxmem_against_domains_count
#                                                  Copyright 2022 cPanel, L.L.C.
#                                                           All rights reserved.
# copyright@cpanel.net                                         http://cpanel.net
# This code is subject to the cPanel license. Unauthorized copying is prohibited

package scripts::check_maxmem_against_domains_count;

=encoding utf-8

=head1 NAME

check_maxmem_against_domains_count

=head1 USAGE

    check_maxmem_against_domains_count [ --always-fix | --report-only ]

    check_maxmem_against_domains_count --help

=head1 DESCRIPTION

This script verifies that C<maxmem> in F<cpanel.config> is sufficient
for the number of accounts on the server. If there is a problem, it
defaults to prompting the user for the proper course of action.

=cut

use strict;
use warnings;

use parent qw( Cpanel::HelpfulScript );

use Try::Tiny;

use IO::Prompt ();

use Cpanel::Config::LoadCpConf  ();
use Cpanel::Config::CpConfGuard ();
use Cpanel::Maxmem              ();

use constant _OPTIONS => (
    'always-fix',
    'report-only',
);

__PACKAGE__->new(@ARGV)->run() if !caller;

sub run {
    my ($self) = @_;

    #Load this right off because if we try to instantiate Locale
    #while we already have cpconf locked we’ll get double locking.
    #(Why do we lock the file to read cpconf for locale??)
    $self->locale();

    my $cpconf_ref = Cpanel::Config::LoadCpConf::loadcpconf_not_copy();

    $self->_check_maxmem($cpconf_ref);

    return;
}

sub _check_maxmem {
    my ( $self, $cpconf_ref ) = @_;

    my $proceed_yn;
    if ( $self->getopt('report-only') ) {
        $proceed_yn = 0;
    }

    if ( $self->getopt('always-fix') ) {
        if ( defined $proceed_yn ) {
            die $self->help( $self->locale()->maketext( 'Do not provide both “[_1]” and “[_2]”.', '--report-only', '--always-fix' ) );
        }

        $proceed_yn = 1;
    }

    my $min_maxmem = $self->_get_min_maxmem();
    $self->say_maketext( 'Minimum “[_1]” value: [_2]', 'maxmem', $min_maxmem );

    my $status_quo = $cpconf_ref->{'maxmem'};
    $self->say_maketext( 'Current “[_1]” value: [_2]', 'maxmem', $status_quo );

    $self->say(q<>);

    if (
        !$status_quo ||                                            # == 0 is unlimited
        $status_quo eq 'unlimited' || $status_quo >= $min_maxmem
    ) {
        $self->say_maketext( 'Your system’s “[_1]” setting meets the minimum requirements for the number of [asis,cPanel] accounts on the system.', 'maxmem' );
    }
    else {
        $self->say_maketext( 'Your system’s “[_1]” is too low.', 'maxmem' );

        my $locale = $self->locale();

        if ( !defined $proceed_yn ) {
            $proceed_yn = IO::Prompt::prompt(
                '-yes_no',
                "\n" . $locale->maketext('Do you want the system to update this setting now?') . q< [y/n] >,
            );
        }

        if ($proceed_yn) {
            $self->say_maketext('The system will now update this setting to the minimum value.');

            my $cpconf_obj = Cpanel::Config::CpConfGuard->new();
            $cpconf_obj->set( 'maxmem' => $min_maxmem );
            $cpconf_obj->save();

            $self->say(q<>);
            $self->say_maketext( '“[_1]” is now set to the minimum value.', 'maxmem' );
        }
    }

    return;
}

#----------------------------------------------------------------------

#overridden in tests
sub _get_min_maxmem {
    my ( $self, @args ) = @_;
    return Cpanel::Maxmem::minimum(@args);
}

1;