backend check for save files exist

src/factorio/server.go

@@ -3,6 +3,7 @@ package factorio
 import (
 	"bufio"
 	"encoding/json"
+	"errors"
 	"io"
 	"io/ioutil"
 	"log"
@@ -230,6 +231,15 @@ func (server *Server) Run() error {
 		ioutil.WriteFile(config.SettingsFile, data, 0644)
 	}
 
+	saves, err := ListSaves(config.FactorioSavesDir)
+	if err != nil {
+		log.Println("Failed to get saves list: ", err)
+	}
+
+	if len(saves) == 0 {
+		return errors.New("No savefile exists on the server")
+	}
+
 	args := []string{}
 
 	//The factorio server refenences its executable-path, since we execute the ld.so file and pass the factorio binary as a parameter