Fixes Changes and new additions

Fixed an issue where launching server w/o screen failed
New: added an output showing screen sessions after launching
New: added stdout and stdin to screenless launch allowing interacting with server cli
Change: Broke up source code to make it easier to read and make changes
Change: Updated .gitignore

launchserver.go

@@ -0,0 +1,55 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"os"
+	"os/exec"
+	"time"
+)
+
+func startStopServer(cmd string, con GoConfig) {
+	switch cmd {
+	case "start":
+		x := fmt.Sprintf("%s --port %d --server-settings %s --start-server %s", con.Config.ServExec, con.Config.ServPort, con.Config.ServCfg, con.Config.WorldFile)
+		if con.Config.UseScreen { // if screen enabled in confing.yml
+			fmt.Println("Starting factorio server in screen session")
+			startScreenCmd := exec.Command("screen", "-dmS", con.Config.ScreenName, "bash", "-c", x, "; exec sh")
+			startScreenCmd.Stdout = os.Stdout
+			startScreenCmd.Stderr = os.Stderr
+			err := startScreenCmd.Run()
+			if err != nil {
+				log.Fatalf("Failed to start server: %s", err)
+			} else {
+				fmt.Printf("Started server on port %d, in screen named %s\n", con.Config.ServPort, con.Config.ScreenName)
+				y := exec.Command("screen", "-ls")
+				y.Stdout = os.Stdout
+				y.Stderr = os.Stderr
+				err = y.Run()
+			}
+		} else {
+			startSrvCmd := exec.Command("bash", "-c", x)
+			startSrvCmd.Stdout = os.Stdout
+			startSrvCmd.Stderr = os.Stdout
+			startSrvCmd.Stdin = os.Stdin
+			err := startSrvCmd.Run()
+			if err != nil {
+				log.Fatalf("Failed to start server: %s", err)
+			}
+		}
+	case "stop":
+		quitServerCmd := exec.Command("screen", "-S", con.Config.ScreenName, "-p", "0", "-X", "stuff", "/quit\n")
+		err := quitServerCmd.Run()
+		if err != nil {
+			log.Fatalf("Command failed: %s, Error: %v", quitServerCmd.Args, err)
+		} else {
+			fmt.Printf("Server in screen %s stopped\n", con.Config.ScreenName)
+		}
+		fmt.Println("Waiting for server to shutdown\r")
+		time.Sleep(10 * time.Second)
+		y := exec.Command("screen", "-ls")
+		y.Stdout = os.Stdout
+		y.Stderr = os.Stderr
+		err = y.Run()
+	}
+}