add jwtkey config to avoid logging in again after reboot

internal/config/config.go

@@ -12,10 +12,16 @@ type Config struct {
 	Port             string `toml:"port" comment:"The port to listen on for the server."`
 	DatabaseFilePath string `toml:"database_file_path" comment:"Path to sqlite database file."`
 	DemoDataPath     string `toml:"demo_data_path" comment:"The path to the sql file to load for demo data."`
+	JWTKey           string `toml:"jwt_key" comment:"The key used to encrypt the generated JWT. Encoded in base64. If empty a random one will be generated on every restart."`
 }
 
 func defaultConfig() Config {
-	return Config{Port: "8080", DatabaseFilePath: "plm.db", DemoDataPath: ""}
+	return Config{
+		Port:             "8080",
+		DatabaseFilePath: "plm.db",
+		DemoDataPath:     "",
+		JWTKey:           "",
+	}
 }
 
 func LoadConfig(configPath string) Config {

internal/jwtauth/key.go

@@ -27,12 +27,17 @@ func getKeyVariableName() string {
 	return "PLM_JWT_KEY"
 }
 
-func InitKey() error {
+func InitKey(jwtkey string) error {
 	var err error
 	keyName := getKeyVariableName()
+	//ignore config value, look in env first
 	key := os.Getenv(keyName)
 	if key == "" {
+		if jwtkey != "" {
+			key = jwtkey
+		} else {
 			key, err = generateSecureToken(64)
+		}
 		os.Setenv(keyName, key)
 	}
 	return err

main.go

@@ -19,7 +19,7 @@ func main() {
 
 func setup(config *config.Config) *gin.Engine {
 	db := db.Initdb(config.DatabaseFilePath, config.DemoDataPath)
-	err := jwtauth.InitKey()
+	err := jwtauth.InitKey(config.JWTKey)
 	if err != nil {
 		panic(err)
 	}