.gitignore

@@ -1,4 +1,2 @@
 dist/
 node_modules/
-
-*.local*

main.go

@@ -20,65 +20,8 @@ func main() {
 	log.Fatal(server.ListenAndServe())
 }
 
-type Store interface {
-	Count() (int, error)
-	Increment() (int, error)
-	Decrement() (int, error)
-}
-
-const StoreFilename = "store.local.json"
-
-type fileStore struct {
-	Counter int `json:"counter"`
-}
-
-func (db *fileStore) Count() (int, error) {
-	if err := readOrCreateJson(StoreFilename, db); err != nil {
-		return 0, err
-	}
-
-	return db.Counter, nil
-}
-
-func (db *fileStore) Increment() (int, error) {
-	if err := readOrCreateJson(StoreFilename, db); err != nil {
-		return 0, err
-	}
-
-	db.Counter++
-
-	if err := writeJson(StoreFilename, db); err != nil {
-		return 0, err
-	}
-
-	return db.Counter, nil
-}
-
-func (db *fileStore) Decrement() (int, error) {
-	if err := readOrCreateJson(StoreFilename, db); err != nil {
-		return 0, err
-	}
-
-	db.Counter--
-
-	if err := writeJson(StoreFilename, db); err != nil {
-		return 0, err
-	}
-
-	return db.Counter, nil
-}
-
 func setupRoutes(mux *http.ServeMux) {
-	var db Store = &fileStore{Counter: 0}
-	{
-		initialCount, err := db.Count()
-		if err != nil {
-			log.Fatalf(`Unable to create store: %v`, err)
-			return
-		}
-
-		log.Printf(`Store correctly initialized, count: %v`, initialCount)
-	}
+	counter := 0
 
 	// API Routes
 
@@ -103,14 +46,9 @@ func setupRoutes(mux *http.ServeMux) {
 			return
 		}
 
-		count, err := db.Count()
-		if err != nil {
-			http.Error(w, err.Error(), http.StatusInternalServerError)
-			return
-		}
-
 		w.Header().Set("Content-Type", "application/json")
-		if err := json.NewEncoder(w).Encode(count); err != nil {
+		err := json.NewEncoder(w).Encode(counter)
+		if err != nil {
 			http.Error(w, err.Error(), http.StatusInternalServerError)
 			return
 		}
@@ -122,14 +60,11 @@ func setupRoutes(mux *http.ServeMux) {
 			return
 		}
 
-		newCount, err := db.Increment()
-		if err != nil {
-			http.Error(w, err.Error(), http.StatusInternalServerError)
-			return
-		}
+		counter++
 
 		w.Header().Set("Content-Type", "application/json")
-		if err := json.NewEncoder(w).Encode(newCount); err != nil {
+		err := json.NewEncoder(w).Encode(counter)
+		if err != nil {
 			http.Error(w, err.Error(), http.StatusInternalServerError)
 			return
 		}
@@ -141,14 +76,11 @@ func setupRoutes(mux *http.ServeMux) {
 			return
 		}
 
-		newCount, err := db.Decrement()
-		if err != nil {
-			http.Error(w, err.Error(), http.StatusInternalServerError)
-			return
-		}
+		counter--
 
 		w.Header().Set("Content-Type", "application/json")
-		if err := json.NewEncoder(w).Encode(newCount); err != nil {
+		err := json.NewEncoder(w).Encode(counter)
+		if err != nil {
 			http.Error(w, err.Error(), http.StatusInternalServerError)
 			return
 		}

utils.go

@@ -1,40 +0,0 @@
-package main
-
-import (
-	"encoding/json"
-	"os"
-)
-
-func readOrCreateJson(filename string, value any) error {
-	f, err := os.Open(filename)
-	if err != nil {
-		if os.IsNotExist(err) {
-			return writeJson(filename, value)
-		}
-
-		return err
-	}
-	defer f.Close()
-
-	if json.NewDecoder(f).Decode(value); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func writeJson(filename string, value any) error {
-	f, err := os.Create(filename)
-	if err != nil {
-		return err
-	}
-	defer f.Close()
-
-	enc := json.NewEncoder(f)
-	enc.SetIndent("", "    ")
-	if err := enc.Encode(value); err != nil {
-		return err
-	}
-
-	return nil
-}