search for steam userdata dir automaticly

cmd/steamimmich.go

@@ -1,29 +1,91 @@
 package main
 
 import (
+	"log"
 	"os"
+	"path/filepath"
+	"runtime"
 
 	steamimmich "git.kapelle.org/niklas/steam-immich/internal"
 	"github.com/alexflint/go-arg"
 )
 
 type args struct {
-	BaseURL     string `arg:"--base-url,required,env:BASE_URL" placeholder:"https://demo.immich.app"`
-	APIKey      string `arg:"--api-key,required,env:API_KEY" placeholder:"API_KEY"`
-	UserdataDir string `arg:"--steam-userdata-dir,env:USERDATA_DIR" default:"$HOME/.var/app/com.valvesoftware.Steam/.local/share/Steam/userdata"`
-	DeviceID    string `arg:"--device-id,env:DEVICE_ID" default:"steam-immich"`
-	Album       string `arg:"--album,env:ALBUM"`
+	BaseURL     string `arg:"--base-url,required" placeholder:"BASE_URL" help:"Base URL of the Immich instance e.g.: https://demo.immich.app"`
+	APIKey      string `arg:"--api-key,required" placeholder:"API_KEY" help:"API Key. Needs asset.upload, asset.update, albumAsset.create"`
+	UserdataDir string `arg:"--steam-userdata-dir" placeholder:"USERDATA_DIR" help:"Steam userdata directory. If not set, search automaticly."`
+	DeviceID    string `arg:"--device-id" default:"steam-immich" help:"Device ID of the uploads"`
+	Album       string `arg:"--album" help:"UUID of a album to upload to"`
 }
 
 func main() {
 	var args args
 	arg.MustParse(&args)
 
+	var steamUserdataDir = ""
+
+	if args.UserdataDir != "" {
+		steamUserdataDir = os.ExpandEnv(args.UserdataDir)
+	} else {
+		steamUserdataDir = findUserdataDir()
+	}
+
+	if steamUserdataDir == "" {
+		log.Fatal("Can not find steam userdata dir. Please set with --steam-userdata-dir")
+	}
+
 	steamimmich.Run(steamimmich.Config{
 		APIKey:      args.APIKey,
 		BaseURL:     args.BaseURL,
-		UserdataDir: os.ExpandEnv(args.UserdataDir),
+		UserdataDir: steamUserdataDir,
 		DeiveID:     args.DeviceID,
 		Album:       args.Album,
 	})
 }
+
+func findUserdataDir() string {
+	var candidates []string
+
+	switch runtime.GOOS {
+	case "windows":
+		// Common Steam install paths on Windows
+		localAppData := os.Getenv("LOCALAPPDATA")
+		programFiles := os.Getenv("ProgramFiles(x86)")
+		if programFiles == "" {
+			programFiles = os.Getenv("ProgramFiles")
+		}
+
+		candidates = []string{
+			filepath.Join(programFiles, "Steam"),
+			filepath.Join(localAppData, "Steam"),
+		}
+
+	case "linux":
+		home := os.Getenv("HOME")
+
+		candidates = []string{
+			filepath.Join(home, ".steam", "steam"),                                         // standard
+			filepath.Join(home, ".local", "share", "Steam"),                                // alternate
+			filepath.Join(home, ".var", "app", "com.valvesoftware.Steam", "data", "Steam"), // Flatpak
+		}
+	case "darwin":
+		// Common Steam install path on macOS
+		home := os.Getenv("HOME")
+		candidates = []string{
+			filepath.Join(home, "Library", "Application Support", "Steam"),
+		}
+
+	default:
+		return ""
+	}
+
+	for _, base := range candidates {
+		userdata := filepath.Join(base, "userdata")
+		info, err := os.Stat(userdata)
+		if err == nil && info.IsDir() {
+			return userdata
+		}
+	}
+
+	return ""
+}