Improve [Startup Server] Support TLS

- [+] feat(init.go): add TLS certificate and key command line flags
- [+] feat(main.go): implement TLS support for the server with fallback to environment variables
- [+] fix(main.go): improve logging messages for server start and error handling

common/init.go

@@ -3,11 +3,12 @@ package common
 import (
 	"flag"
 	"fmt"
-	"github.com/songquanpeng/one-api/common/config"
-	"github.com/songquanpeng/one-api/common/logger"
 	"log"
 	"os"
 	"path/filepath"
+
+	"github.com/songquanpeng/one-api/common/config"
+	"github.com/songquanpeng/one-api/common/logger"
 )
 
 var (
@@ -15,13 +16,15 @@ var (
 	PrintVersion = flag.Bool("version", false, "print version and exit")
 	PrintHelp    = flag.Bool("help", false, "print help and exit")
 	LogDir       = flag.String("log-dir", "./logs", "specify the log directory")
+	TLSCertFile  = flag.String("tls-cert", "", "path to TLS certificate file")
+	TLSKeyFile   = flag.String("tls-key", "", "path to TLS key file")
 )
 
 func printHelp() {
 	fmt.Println("One API " + Version + " - All in one API service for OpenAI API.")
 	fmt.Println("Copyright (C) 2023 JustSong. All rights reserved.")
 	fmt.Println("GitHub: https://github.com/songquanpeng/one-api")
-	fmt.Println("Usage: one-api [--port <port>] [--log-dir <log directory>] [--version] [--help]")
+	fmt.Println("Usage: one-api [--port <port>] [--log-dir <log directory>] [--tls-cert <path>] [--tls-key <path>] [--version] [--help]")
 }
 
 func Init() {

main.go

@@ -116,9 +116,29 @@ func main() {
 	if port == "" {
 		port = strconv.Itoa(*common.Port)
 	}
+
+	// Check for TLS configuration - prioritize command line flags over environment variables
+	certFile := *common.TLSCertFile
+	keyFile := *common.TLSKeyFile
+
+	// If flags are not set, fallback to environment variables
+	if certFile == "" {
+		certFile = os.Getenv("TLS_CERT_FILE")
+	}
+	if keyFile == "" {
+		keyFile = os.Getenv("TLS_KEY_FILE")
+	}
+
+	// Start the server with or without TLS
+	if certFile != "" && keyFile != "" {
+		logger.SysLogf("server started with TLS on https://localhost:%s", port)
+		err = server.RunTLS(":"+port, certFile, keyFile)
+	} else {
 		logger.SysLogf("server started on http://localhost:%s", port)
 		err = server.Run(":" + port)
+	}
+
 	if err != nil {
-		logger.FatalLog("failed to start HTTP server: " + err.Error())
+		logger.FatalLog("failed to start server: " + err.Error())
 	}
 }