guestbook-ng/lib/GuestbookNg/Model/Message.pm
2021-12-22 00:31:11 -05:00

57 lines
1.3 KiB
Perl

#!/usr/bin/env perl
package GuestbookNg::Model::Message;
use Mojo::Base -base, -signatures;
has 'pg';
sub new($class, $pg, $pg_object) {
bless {
$pg => $pg_object,
max_posts => 5
}
}
sub get_posts($self) {
$self->pg->db->query(<<~'END_SQL')->arrays()
SELECT to_char(message_date, 'Dy Mon DD HH:MI:SS AM TZ YYYY'),
visitor_name,
message
FROM messages
ORDER BY message_date DESC;
END_SQL
}
sub create_post($self, $name, $message) {
$self->pg-db->query(<<~'END_SQL', $name, $message)
INSERT INTO messages (message_date, visitor_name, message)
VALUES (NOW(), ?, ?);
END_SQL
}
sub view_posts($self, $this_page, $last_page = undef, @posts) {
$last_page //= get_last_page(@posts);
my $last_post = $this_page * $self->{'max_posts'} - 1;
my $first_post = $last_post - $self->{'max_posts'} + 1;
grep defined, @posts[$first_post..$last_post];
}
sub max_posts($self, $value = undef) {
$self->{'max_posts'} = $value // $self->{'max_posts'}
}
sub get_last_page($self, @posts) {
# Add a page if we have "remainder" posts
if (scalar(@posts) % $self->{'max_posts'}) {
sprintf('%d', scalar(@posts) / $self->{'max_posts'}) + 1
}
else {
sprintf('%d', scalar(@posts) / $self->{'max_posts'})
}
}
1;