Small refactoring

.gitignore

@@ -6,3 +6,6 @@
 
 # go build output
 spaceapid
+
+# Saved state
+spaceapid-state.json

main.go

@@ -25,12 +25,12 @@ func main() {
 	// Register signal handler
 	sc := make(chan os.Signal, 1)
 	signal.Notify(sc, syscall.SIGINT, syscall.SIGTERM)
-	go func(ch chan os.Signal, resp *types.SpaceAPIResponseV14) {
-		<-ch
+	go func(resp *types.SpaceAPIResponseV14) {
+		<-sc
 		log.Println("Saving state and shutting down...")
 		util.SaveCurrentState(*resp)
 		os.Exit(0)
-	}(sc, &spaceApiResponse)
+	}(&spaceApiResponse)
 
 	// Register HTTP handlers
 	http.HandleFunc("/", handlers.Root(&spaceApiResponse))

util/util.go

@@ -16,7 +16,6 @@ const savedStateJSONPath = "/var/lib/spaceapid/spaceapid-state.json"
 
 // ParseTemplate parses the given file and
 func ParseTemplate(file string) (resp types.SpaceAPIResponseV14) {
-
 	// Read template file
 	template, err := os.ReadFile(file)
 	if err != nil {
@@ -84,14 +83,12 @@ func SaveCurrentState(response types.SpaceAPIResponseV14) {
 		log.Fatalln("Failed creating", savedStateJSONPath, ", aborting... error:", err)
 	}
 
-	// Open persistent state file for reading
+	// Open persistent state file
 	file, err := os.OpenFile(savedStateJSONPath, os.O_RDWR|os.O_CREATE, 0644)
 	if err != nil {
 		log.Fatalln("Failed opening", savedStateJSONPath, "while trying to save current state... error:", err)
 	}
-	defer func(file *os.File) {
-		_ = file.Close()
-	}(file)
+	defer file.Close()
 
 	// Create persistent state
 	persistentStateV14 := types.PersistentStateV14{