bug fix: default config

cmd/main.go

@@ -1,7 +1,6 @@
 package main
 
 import (
-	_ "embed"
 	"fmt"
 	"github.com/hdt3213/godis/config"
 	"github.com/hdt3213/godis/lib/logger"
@@ -10,22 +9,45 @@ import (
 	"os"
 )
 
-//go:embed banner.txt
-var banner string
+var banner = `
+   ______          ___
+  / ____/___  ____/ (_)____
+ / / __/ __ \/ __  / / ___/
+/ /_/ / /_/ / /_/ / (__  )
+\____/\____/\__,_/_/____/
+`
+
+var defaultProperties = &config.ServerProperties{
+	Bind:           "0.0.0.0",
+	Port:           6399,
+	AppendOnly:     false,
+	AppendFilename: "",
+	MaxClients:     1000,
+}
+
+func fileExists(filename string) bool {
+	info, err := os.Stat(filename)
+	return err != nil && !info.IsDir()
+}
 
 func main() {
 	print(banner)
-	configFilename := os.Getenv("CONFIG")
-	if configFilename == "" {
-		configFilename = "redis.conf"
-	}
-	config.SetupConfig(configFilename)
 	logger.Setup(&logger.Settings{
 		Path:       "logs",
 		Name:       "godis",
 		Ext:        ".log",
 		TimeFormat: "2006-01-02",
 	})
+	configFilename := os.Getenv("CONFIG")
+	if configFilename == "" {
+		if fileExists("redis.conf") {
+			config.SetupConfig("redis.conf")
+		} else {
+			config.Properties = defaultProperties
+		}
+	} else {
+		config.SetupConfig(configFilename)
+	}
 
 	err := tcp.ListenAndServeWithSignal(&tcp.Config{
 		Address: fmt.Sprintf("%s:%d", config.Properties.Bind, config.Properties.Port),