Run go fmt

This patch is the result of running `go fmt ./...` with Go v1.16.15.

src/server/router/router.go

@@ -32,9 +32,9 @@ func (r *Router) Use(h Handler) {
 }
 
 func (r *Router) For(path string, handler Handler) {
-    chain := make([]Handler, 0)
-    chain = append(chain, r.middle...)
-    chain = append(chain, handler)
+	chain := make([]Handler, 0)
+	chain = append(chain, r.middle...)
+	chain = append(chain, handler)
 
 	x := Route{}
 	x.regex = routeRegexp(path)

src/server/routes.go

@@ -340,7 +340,7 @@ func (s *Server) handleItemList(c *router.Context) {
 			items = items[:perPage]
 		}
 		c.JSON(http.StatusOK, map[string]interface{}{
-			"list": items,
+			"list":     items,
 			"has_more": hasMore,
 		})
 	} else if c.Req.Method == "PUT" {

src/server/server.go

@@ -10,10 +10,10 @@ import (
 )
 
 type Server struct {
-	Addr   string
-	db     *storage.Storage
-	worker *worker.Worker
-	cache  map[string]interface{}
+	Addr        string
+	db          *storage.Storage
+	worker      *worker.Worker
+	cache       map[string]interface{}
 	cache_mutex *sync.Mutex
 
 	BasePath string
@@ -28,10 +28,10 @@ type Server struct {
 
 func NewServer(db *storage.Storage, addr string) *Server {
 	return &Server{
-		db:     db,
-		Addr:   addr,
-		worker: worker.NewWorker(db),
-		cache:  make(map[string]interface{}),
+		db:          db,
+		Addr:        addr,
+		worker:      worker.NewWorker(db),
+		cache:       make(map[string]interface{}),
 		cache_mutex: &sync.Mutex{},
 	}
 }