1. 小程序端

2. 视频优化

server/config/config.go

@@ -1,6 +1,7 @@
 package config
 
 import (
+	"bytes"
 	"fmt"
 	"log"
 	"os"
@@ -17,37 +18,102 @@ var DB *gorm.DB
 // JWTSecret is the secret key used for signing JWT tokens
 var JWTSecret = "your-secret-key" // Default value, should be set via JWT_SECRET environment variable in production
 
-// LoadEnvFile 从可执行文件同级目录加载 .env 文件
-func LoadEnvFile() {
-	// 获取可执行文件路径
-	execPath, err := os.Executable()
+// utf8BOM 用于剥离 Windows 编辑器常写入的 UTF-8 BOM，否则 godotenv 会解析失败
+var utf8BOM = []byte{0xEF, 0xBB, 0xBF}
+
+// tryLoadEnv 尝试加载指定路径的 .env；成功则记录日志并返回 true。
+// 会先去掉 UTF-8 BOM，再按 godotenv 默认语义：不覆盖已存在的 OS 环境变量。
+func tryLoadEnv(path string) bool {
+	if path == "" {
+		return false
+	}
+	raw, err := os.ReadFile(path)
 	if err != nil {
-		log.Printf("Warning: Failed to get executable path: %v. Using current working directory.", err)
-		// 如果获取可执行文件路径失败，使用当前工作目录
-		if err := godotenv.Load(".env"); err != nil {
-			log.Printf("Info: .env file not found in current directory: %v", err)
-		} else {
-			log.Println("Loaded .env file from current directory")
+		return false
+	}
+	raw = bytes.TrimPrefix(raw, utf8BOM)
+	envMap, err := godotenv.Parse(bytes.NewReader(raw))
+	if err != nil {
+		log.Printf("Warning: found .env at %s but failed to parse: %v", path, err)
+		return false
+	}
+	applied := 0
+	for k, v := range envMap {
+		if os.Getenv(k) == "" {
+			_ = os.Setenv(k, v)
+			applied++
 		}
-		return
+	}
+	log.Printf("Loaded .env file from %s (%d keys applied)", path, applied)
+	return true
+}
+
+// collectEnvCandidates 收集候选 .env 路径：可执行文件旁、cwd、cwd/server、向上 3 级
+func collectEnvCandidates() []string {
+	seen := map[string]struct{}{}
+	var list []string
+	add := func(p string) {
+		abs, err := filepath.Abs(p)
+		if err != nil {
+			abs = p
+		}
+		if _, ok := seen[abs]; ok {
+			return
+		}
+		seen[abs] = struct{}{}
+		list = append(list, abs)
 	}
 
-	// 获取可执行文件所在目录
-	execDir := filepath.Dir(execPath)
-	envPath := filepath.Join(execDir, ".env")
-
-	// 检查 .env 文件是否存在
-	if _, err := os.Stat(envPath); os.IsNotExist(err) {
-		log.Printf("Info: .env file not found at %s, using environment variables or defaults", envPath)
-		return
-	}
-
-	// 加载 .env 文件
-	if err := godotenv.Load(envPath); err != nil {
-		log.Printf("Warning: Failed to load .env file from %s: %v", envPath, err)
+	if execPath, err := os.Executable(); err == nil {
+		add(filepath.Join(filepath.Dir(execPath), ".env"))
 	} else {
-		log.Printf("Loaded .env file from %s", envPath)
+		log.Printf("Warning: Failed to get executable path: %v", err)
 	}
+
+	cwd, err := os.Getwd()
+	if err != nil {
+		log.Printf("Warning: Failed to get working directory: %v", err)
+		cwd = "."
+	}
+	add(filepath.Join(cwd, ".env"))
+	add(filepath.Join(cwd, "server", ".env")) // 从仓库根启动时
+
+	// 向上最多 3 级父目录查找 .env 与 server/.env
+	dir := cwd
+	for i := 0; i < 3; i++ {
+		parent := filepath.Dir(dir)
+		if parent == dir {
+			break
+		}
+		dir = parent
+		add(filepath.Join(dir, ".env"))
+		add(filepath.Join(dir, "server", ".env"))
+	}
+	return list
+}
+
+// LoadEnvFile 依次尝试多个路径加载 .env（后加载补缺，不覆盖已有 OS 环境变量）
+func LoadEnvFile() {
+	loadedPaths := []string{}
+	for _, p := range collectEnvCandidates() {
+		if tryLoadEnv(p) {
+			loadedPaths = append(loadedPaths, p)
+		}
+	}
+
+	if len(loadedPaths) == 0 {
+		log.Println("Info: no .env loaded; relying on process environment variables")
+	} else {
+		log.Printf("Env load summary: %d file(s) loaded", len(loadedPaths))
+	}
+
+	appID := os.Getenv("WECHAT_APP_ID")
+	secret := os.Getenv("WECHAT_APP_SECRET")
+	log.Printf(
+		"WeChat env: APP_ID_set=%v SECRET_set=%v",
+		appID != "",
+		secret != "",
+	)
 }
 
 func InitDB() {