Get session secret from env instead of hardcoding

cmd/budgeteer/main.go

@@ -30,8 +30,10 @@ func main() {
 	}
 
 	handler := &server.Handler{
-		Service:             queries,
+		Service: queries,
-		TokenVerifier:       &jwt.TokenVerifier{},
+		TokenVerifier: &jwt.TokenVerifier{
+			Secret: cfg.SessionSecret,
+		},
 		CredentialsVerifier: &bcrypt.Verifier{},
 		StaticFS:            http.FS(static),
 	}

config/config.go

@@ -7,12 +7,14 @@ import (
 // Config contains all needed configurations.
 type Config struct {
 	DatabaseConnection string
+	SessionSecret      string
 }
 
 // LoadConfig from path.
 func LoadConfig() (*Config, error) {
 	configuration := Config{
 		DatabaseConnection: os.Getenv("BUDGETEER_DB"),
+		SessionSecret:      os.Getenv("BUDGETEER_SESSION_SECRET"),
 	}
 
 	return &configuration, nil

docker-compose.dev.yml

@@ -17,6 +17,7 @@ services:
                         - ~/.cache:/.cache
                 environment:
                         BUDGETEER_DB: postgres://budgeteer:budgeteer@db:5432/budgeteer
+                        BUDGETEER_SESSION_SECRET: random string for JWT authorization
                 depends_on:
                         - db
 

jwt/login.go

@@ -11,7 +11,9 @@ import (
 )
 
 // TokenVerifier verifies Tokens.
-type TokenVerifier struct{}
+type TokenVerifier struct {
+	Secret string
+}
 
 // Token contains everything to authenticate a user.
 type Token struct {
@@ -23,7 +25,6 @@ type Token struct {
 
 const (
 	expiration = 72
-	secret     = "uditapbzuditagscwxuqdflgzpbu´ßiaefnlmzeßtrubiadern"
 )
 
 // CreateToken creates a new token from username and name.
@@ -36,7 +37,7 @@ func (tv *TokenVerifier) CreateToken(user *postgres.User) (string, error) {
 	})
 
 	// Generate encoded token and send it as response.
-	t, err := token.SignedString([]byte(secret))
+	t, err := token.SignedString([]byte(tv.Secret))
 	if err != nil {
 		return "", fmt.Errorf("create token: %w", err)
 	}
@@ -56,7 +57,7 @@ func (tv *TokenVerifier) VerifyToken(tokenString string) (budgeteer.Token, error
 		if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
 			return nil, fmt.Errorf("method '%v': %w", token.Header["alg"], ErrUnexpectedSigningMethod)
 		}
-		return []byte(secret), nil
+		return []byte(tv.Secret), nil
 	})
 	if err != nil {
 		return nil, fmt.Errorf("parse jwt: %w", err)

server/account_test.go

@@ -27,8 +27,10 @@ func TestRegisterUser(t *testing.T) { //nolint:funlen
 	}
 
 	h := Handler{
-		Service:             database,
+		Service: database,
-		TokenVerifier:       &jwt.TokenVerifier{},
+		TokenVerifier: &jwt.TokenVerifier{
+			Secret: "this_is_my_demo_secret_for_unit_tests",
+		},
 		CredentialsVerifier: &bcrypt.Verifier{},
 	}