Move config file to XDG config dir

main.go

@@ -120,18 +120,19 @@ func newCLIParser() (*flaggy.Parser, cliCommands) {
 }
 
 func loadConfigAndPassword() (config, string) {
-	homeDir, err := os.UserHomeDir()
+	configFile, legacyTarget, err := configFilePath()
 	if err != nil {
-		fmt.Println("Error getting user home directory:", err)
+		fmt.Println("Error finding config directory:", err)
 		os.Exit(1)
 	}
-
-	configFile := filepath.Join(homeDir, "docspell-cli.json")
 	configData, err := os.ReadFile(configFile)
 	if err != nil {
-		fmt.Println("Error reading config file:", err)
+		fmt.Printf("Error reading config file %s: %v\n", configFile, err)
 		os.Exit(1)
 	}
+	if legacyTarget != "" {
+		fmt.Fprintf(os.Stderr, "Warning: using legacy config file %s; move it to %s\n", configFile, legacyTarget)
+	}
 
 	var cfg config
 	if err := json.Unmarshal(configData, &cfg); err != nil {
@@ -149,6 +150,29 @@ func loadConfigAndPassword() (config, string) {
 	return cfg, strings.TrimSpace(string(password))
 }
 
+func configFilePath() (path string, legacyTarget string, err error) {
+	configDir, err := os.UserConfigDir()
+	if err != nil {
+		return "", "", err
+	}
+	xdgPath := filepath.Join(configDir, "docspell-cli", "config.json")
+	if _, err := os.Stat(xdgPath); err == nil {
+		return xdgPath, "", nil
+	} else if !os.IsNotExist(err) {
+		return xdgPath, "", nil
+	}
+
+	homeDir, err := os.UserHomeDir()
+	if err != nil {
+		return xdgPath, "", nil
+	}
+	legacyPath := filepath.Join(homeDir, "docspell-cli.json")
+	if _, err := os.Stat(legacyPath); err == nil {
+		return legacyPath, xdgPath, nil
+	}
+	return xdgPath, "", nil
+}
+
 func runImportCommand(cfg config, password string, args []string) {
 	options, err := parseImportOptions(args)
 	if err != nil {