backend: implement /media/:media_id

lib/PoorBooru/Backend.pm

@@ -43,6 +43,8 @@ sub startup ($self)
 
 	$r->get("/")->to("gallery#index");
 
+	$r->get("/media/:media_id")->to("media#show");
+
 	$r->get("/tags")->to("tags#list");
 	$r->get("/tag/:tag_id_or_name")->to("tags#show");
 }

lib/PoorBooru/Backend/Controller/Media.pm

@@ -0,0 +1,35 @@
+package PoorBooru::Backend::Controller::Media;
+use v5.36;
+use strict;
+use warnings;
+
+use Mojo::Base "Mojolicious::Controller";
+use Mojo::JSON qw(decode_json);
+use SeaweedFS::FID;
+
+sub show ($self)
+{
+	my $v = $self->validation;
+	my $page = $v->optional("page")->num(1, undef)->param // 1;
+
+	return $self->render(status => 404) if $v->has_error;
+
+	my $media_id = $self->stash("media_id");
+	my $poorbooru_api = $self->config("poorbooru_api");
+	my $res = $self->ua->get("$poorbooru_api/media/$media_id?page=$page")
+	    ->result;
+
+	return $self->render(status => $res->code) if $res->is_error;
+
+	my $media = $res->json;
+	$media->{download} = $self->seaweed->url_for(SeaweedFS::FID
+	    ->from_string($media->{download}));
+
+	return $self->render(
+		template => "media",
+		media    => $media,
+		#pager    => { $self->pager_links($res->json->{pager}) },
+	);
+};
+
+1;