wiki-map/HexGrid/Image.pm

package HexGrid::Image;

use v5.30;

use Moo;
use MooX::Aliases;
use LWP::UserAgent;
use MIME::Base64;

use feature "signatures";
no warnings "experimental::signatures";

my $DEBUG = 0;

my $USER_AGENT;

has source => (is => 'rw', required => 1, alias => [qw(src url source_url)]);
has fetch => (is => 'rw', default => 0);
has id => (is => 'rw', required => 1);
has width => (is => 'rw', required => 1);
has height => (is => 'rw', required => 1);

has _cached_data => (is => 'rw', default => undef);

sub render($this, $container)
{
	say STDERR $this->{_cached_data} if $DEBUG;
	my $image_element = $container->image(id => $this->{id});
	my $href = $this->{source};
	if ($this->{fetch})
	{
		$href = $this->{_cached_data} // $this->_fetch_base64;
	}
	$image_element->{href} = $href;
	$image_element->{width} = $this->{width};
	$image_element->{height} = $this->{height};
	return $image_element;
}

sub _fetch_base64($this)
{
	$USER_AGENT // ($USER_AGENT = LWP::UserAgent->new(timeout => 10));
	say STDERR "Fetching $this->{source}";
	my $response = $USER_AGENT->get($this->{source});
	my $content_type = $response->headers->content_type;
	my $encoded_content = encode_base64($response->content);
	$this->{_cached_data} = "data:$content_type;base64, $encoded_content";
	return $this->{_cached_data};
}

sub DEBUG { $DEBUG = 1; }
1;