Clean up session handlers

api/endpoints.go

@@ -153,13 +153,14 @@ func handleSession(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	var slot int
-	if r.URL.Query().Has("slot") {
-		slot, err = strconv.Atoi(r.URL.Query().Get("slot"))
+	slot, err := strconv.Atoi(r.URL.Query().Get("slot"))
 	if err != nil {
 		httpError(w, r, err, http.StatusBadRequest)
 		return
 	}
+
+	if slot < 0 || slot >= defs.SessionSlotCount {
+		httpError(w, r, fmt.Errorf("slot id %d out of range", slot), http.StatusBadRequest)
 	}
 
 	if !r.URL.Query().Has("clientSessionId") {

api/savedata/session.go

@@ -1,21 +1,12 @@
 package savedata
 
 import (
-	"fmt"
-
 	"github.com/pagefaultgames/rogueserver/db"
 	"github.com/pagefaultgames/rogueserver/defs"
 )
 
 func GetSession(uuid []byte, slot int) (defs.SessionSaveData, error) {
-	var session defs.SessionSaveData
-
-	if slot < 0 || slot >= defs.SessionSlotCount {
-		return session, fmt.Errorf("slot id %d out of range", slot)
-	}
-
-	var err error
-	session, err = db.ReadSessionSaveData(uuid, slot)
+	session, err := db.ReadSessionSaveData(uuid, slot)
 	if err != nil {
 		return session, err
 	}
@@ -24,10 +15,6 @@ func GetSession(uuid []byte, slot int) (defs.SessionSaveData, error) {
 }
 
 func PutSession(uuid []byte, slot int, data defs.SessionSaveData) error {
-	if slot < 0 || slot >= defs.SessionSlotCount {
-		return fmt.Errorf("slot id %d out of range", slot)
-	}
-
 	err := db.StoreSessionSaveData(uuid, data, slot)
 	if err != nil {
 		return err
@@ -37,10 +24,6 @@ func PutSession(uuid []byte, slot int, data defs.SessionSaveData) error {
 }
 
 func DeleteSession(uuid []byte, slot int) error {
-	if slot < 0 || slot >= defs.SessionSlotCount {
-		return fmt.Errorf("slot id %d out of range", slot)
-	}
-
 	err := db.DeleteSessionSaveData(uuid, slot)
 	if err != nil {
 		return err