added everything to make it have basic functionality.

console/console_windows.go

@@ -0,0 +1,41 @@
+//go:build windows
+
+package console
+
+import (
+	"context"
+	"github.com/UserExistsError/conpty"
+	"io"
+)
+
+type Console struct {
+	stdout      io.Writer
+	commandLine string
+	conPTY      *conpty.ConPty
+	ExitCode    uint32
+}
+
+func New(exePath string, stdout io.Writer) *Console {
+	return &Console{
+		commandLine: exePath,
+		stdout:      stdout,
+	}
+}
+
+func (c *Console) Run() error {
+	var err error
+	c.conPTY, err = conpty.Start(c.commandLine)
+	if err != nil {
+		return err
+	}
+	defer c.conPTY.Close()
+
+	go io.Copy(c.stdout, c.conPTY)
+
+	c.ExitCode, err = c.conPTY.Wait(context.Background())
+	if err != nil {
+		return err
+	}
+
+	return nil
+}

examples/install-rustserver/main.go

@@ -0,0 +1,17 @@
+package main
+
+import "github.com/jensvandewiel/gosteamcmd"
+
+func main() {
+	//this code follows the steps of: https://www.rustafied.com/how-to-host-your-own-rust-server
+	cmd := gosteamcmd.New()
+	cmd.Prompts = append(cmd.Prompts, gosteamcmd.ForceInstallDir("c:\\rustserver\\"))
+	cmd.Prompts = append(cmd.Prompts, gosteamcmd.Login("", ""))
+	cmd.Prompts = append(cmd.Prompts, gosteamcmd.AppUpdate(258550, "", false))
+	//running it headless means it will not output anything
+	err := cmd.RunHeadless()
+
+	if err != nil {
+		panic(err)
+	}
+}

go.mod

@@ -1,3 +1,8 @@
 module github.com/jensvandewiel/gosteamcmd
 
 go 1.20
+
+require (
+	github.com/UserExistsError/conpty v0.1.1 // indirect
+	golang.org/x/sys v0.8.0 // indirect
+)

propmt.go → prompt.go

@@ -7,6 +7,7 @@ type PromptType int
 const (
 	AppUpdatePrompt PromptType = iota
 	LoginPrompt
+	ForceInstallDirPrompt
 )
 
 type Prompt struct {
@@ -15,7 +16,7 @@ type Prompt struct {
 }
 
 // AppUpdate updates the given appID. If beta is not empty, it will update to the given beta. If validate is true, it will validate the files.
-func AppUpdate(appID int, beta string, validate bool) Prompt {
+func AppUpdate(appID int, beta string, validate bool) *Prompt {
 	cmd := "app_update "
 	cmd += strconv.Itoa(appID) + " "
 	if beta != "" {
@@ -24,16 +25,23 @@ func AppUpdate(appID int, beta string, validate bool) Prompt {
 	if validate {
 		cmd += "validate"
 	}
-	return Prompt{cmd, AppUpdatePrompt}
+	return &Prompt{cmd, AppUpdatePrompt}
 }
 
 // Login logs into SteamCMD with the given username and password. If the arguments are empty, it will login as anonymous.
-func Login(username string, password string) Prompt {
+func Login(username string, password string) *Prompt {
 	cmd := "login "
 	if username != "" {
 		cmd += username + " " + password
 	} else {
 		cmd += "anonymous"
 	}
-	return Prompt{cmd, LoginPrompt}
+	return &Prompt{cmd, LoginPrompt}
+}
+
+func ForceInstallDir(directory string) *Prompt {
+	cmd := "force_install_dir "
+	cmd += directory
+
+	return &Prompt{cmd, ForceInstallDirPrompt}
 }

readme.md

@@ -0,0 +1,6 @@
+# This is a W.I.P. project, so it's not finished yet.
+
+To use you must have steamcmd instaled and added it to your path, for now you can only use the library from windows
+
+## Contribute
+I would love to see people contributing to this project, so if you want to contribute just fork the project and make a pull request.

steamcmd.go

@@ -1,9 +1,35 @@
 package gosteamcmd
 
+import (
+	"github.com/jensvandewiel/gosteamcmd/console"
+	"os"
+)
+
 type SteamCMD struct {
-	prompts *[]Prompt
+	// Prompts contains all the commands that will be executed.
+	Prompts []*Prompt
+	console *console.Console
 }
 
 func New() *SteamCMD {
-	return &SteamCMD{}
+	return &SteamCMD{
+		Prompts: make([]*Prompt, 0),
+	}
+}
+
+func (s *SteamCMD) RunHeadless() error {
+	cmd := "steamcmd"
+
+	for _, prompt := range s.Prompts {
+		cmd += " +" + prompt.FullPrompt
+	}
+
+	cmd += " +quit"
+
+	s.console = console.New(cmd, os.Stdout)
+	err := s.console.Run()
+	if err != nil {
+		return err
+	}
+	return nil
 }