From 78738ca3f0dbb775d546d5e779c0ac4b8b4eb789 Mon Sep 17 00:00:00 2001
From: hkfires <10558748+hkfires@users.noreply.github.com>
Date: Fri, 10 Oct 2025 19:40:02 +0800
Subject: [PATCH] fix(config): treat directory as absent for optional config in
 cloud deploy mode

---
 cmd/server/main.go        |  5 ++++-
 internal/config/config.go | 10 +++++++---
 2 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/cmd/server/main.go b/cmd/server/main.go
index 8c329259..03c754f0 100644
--- a/cmd/server/main.go
+++ b/cmd/server/main.go
@@ -127,10 +127,13 @@ func main() {
 	// Log if we're running without a config file in cloud deploy mode
 	var configFileExists bool
 	if isCloudDeploy {
-		if _, err = os.Stat(configFilePath); os.IsNotExist(err) {
+		if info, errStat := os.Stat(configFilePath); errStat != nil {
 			// Don't mislead: API server will not start until configuration is provided.
 			log.Info("Cloud deploy mode: No configuration file detected; standing by for configuration (API server not started)")
 			configFileExists = false
+		} else if info.IsDir() {
+			log.Info("Cloud deploy mode: Config path is a directory; standing by for configuration (API server not started)")
+			configFileExists = false
 		} else {
 			log.Info("Cloud deploy mode: Configuration file detected; starting service")
 			configFileExists = true
diff --git a/internal/config/config.go b/internal/config/config.go
index 85548a69..b6b02fdc 100644
--- a/internal/config/config.go
+++ b/internal/config/config.go
@@ -5,8 +5,10 @@
 package config
 
 import (
+	"errors"
 	"fmt"
 	"os"
+	"syscall"
 
 	"github.com/router-for-me/CLIProxyAPI/v6/sdk/config"
 	"golang.org/x/crypto/bcrypt"
@@ -196,9 +198,11 @@ func LoadConfigOptional(configFile string, optional bool) (*Config, error) {
 	// Read the entire configuration file into memory.
 	data, err := os.ReadFile(configFile)
 	if err != nil {
-		if optional && os.IsNotExist(err) {
-			// Missing and optional: return empty config.
-			return &Config{}, nil
+		if optional {
+			if os.IsNotExist(err) || errors.Is(err, syscall.EISDIR) {
+				// Missing and optional: return empty config (cloud deploy standby).
+				return &Config{}, nil
+			}
 		}
 		return nil, fmt.Errorf("failed to read config file: %w", err)
 	}