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2026-05-27 08:18:36 +08:00

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package forward
import (
"log"
"os"
"path/filepath"
"github.com/joho/godotenv"
)
// LoadEnvFiles 从多个候选路径加载 .env(不覆盖已存在的 OS 环境变量)。
// 查找顺序:当前工作目录 → 可执行文件目录 → 可执行文件上级目录。
func LoadEnvFiles() bool {
candidates := envFileCandidates()
for _, p := range candidates {
// 步骤 1:路径不存在则尝试下一个候选
if _, err := os.Stat(p); err != nil {
continue
}
// 步骤 2:加载成功即返回(godotenv 不覆盖已有环境变量)
if err := godotenv.Load(p); err != nil {
log.Printf("[forward] 加载 %s 失败: %v", p, err)
continue
}
log.Printf("[forward] 已加载 %s", p)
return true
}
log.Print("[forward] 未找到 .env,将使用环境变量或代码默认值;请复制 .env.example 为 .env 并配置 SUPERVISE_TARGET_URL / FILE_TARGET_URL")
return false
}
// envFileCandidates 生成 .env 候选路径列表(去重)。
func envFileCandidates() []string {
seen := make(map[string]struct{})
var out []string
add := func(p string) {
p = filepath.Clean(p)
if _, ok := seen[p]; ok {
return
}
seen[p] = struct{}{}
out = append(out, p)
}
if wd, err := os.Getwd(); err == nil && wd != "" {
add(filepath.Join(wd, ".env"))
}
base := programDir()
add(filepath.Join(base, ".env"))
add(filepath.Join(base, "..", ".env"))
return out
}