Fixes and improves service show’s CLI.

src/service.cr

@@ -154,23 +154,25 @@ commands.push "status", "Prints the status of services." do |args|
 end
 
 commands.push "show", "Shows a service's configuration and state." do |args|
-	service = Service.all.find do |service|
-		unless service.name == args[0]
-			next false
-		end
-
-		env = args[1]? || "root"
-		if service.environment.name != env
-			next false
-		end
-
-		true
+	if args.size < 1
+		STDERR << "usage: service show <id> [id [...]]\n"
+		next
 	end
-	if service
-		puts service.summary
-	else
-		STDERR << "No such service is registered.\n"
-		exit 2
+
+	args.each do |arg|
+		environment_name, service_name = Service.parse_id arg
+
+		service = Service.all.find do |service|
+			service.name == service_name &&
+				service.environment.name == environment_name
+		end
+
+		if service
+			puts service.summary
+		else
+			STDERR << "No such service is registered.\n"
+			exit 2
+		end
 	end
 end