feat: add basic db logic

lib/Urupam/DB.pm

@@ -0,0 +1,36 @@
+package Urupam::DB;
+
+use Mojo::Base -base;
+use Mojo::Promise;
+use Mojo::Redis2;
+
+has redis => sub {
+    Mojo::Redis2->new( url => $ENV{REDIS_URL} || 'redis://localhost:6379' );
+};
+
+sub get {
+    my ( $self, $key ) = @_;
+    my $promise = Mojo::Promise->new;
+    $self->redis->get(
+        $key => sub {
+            my ( $redis, $err, $value ) = @_;
+            $err ? $promise->reject($err) : $promise->resolve($value);
+        }
+    );
+    return $promise;
+}
+
+sub set {
+    my ( $self, $key, $value ) = @_;
+    my $promise = Mojo::Promise->new;
+    $self->redis->set(
+        $key => $value,
+        sub {
+            my ( $redis, $err, $result ) = @_;
+            $err ? $promise->reject($err) : $promise->resolve($result);
+        }
+    );
+    return $promise;
+}
+
+1;