feat(auth): Add logout route

app/controllers/logout.go

@@ -0,0 +1,42 @@
+package controllers
+
+import (
+	"git.secnex.io/secnex/auth-api/services"
+	"git.secnex.io/secnex/auth-api/utils"
+	"git.secnex.io/secnex/masterlog"
+	"github.com/go-playground/validator/v10"
+	"github.com/gofiber/fiber/v2"
+)
+
+type LogoutRequest struct {
+	SessionToken string `json:"token" validate:"required"`
+}
+
+func LogoutController(c *fiber.Ctx) error {
+	var request LogoutRequest
+	if err := c.BodyParser(&request); err != nil {
+		return utils.NewErrorResponse(fiber.StatusBadRequest, &fiber.Map{
+			"message": "Invalid request body",
+		}).Send(c)
+	}
+
+	masterlog.Debug("Processing logout request", map[string]interface{}{"session_token": request.SessionToken})
+
+	validate := validator.New()
+	if err := validate.Struct(request); err != nil {
+		return utils.NewErrorResponse(fiber.StatusBadRequest, &fiber.Map{
+			"message": "Invalid request body",
+		}).Send(c)
+	}
+
+	err := services.Logout(request.SessionToken)
+	if err != nil {
+		return utils.NewErrorResponse(fiber.StatusInternalServerError, &fiber.Map{
+			"message": "Error logging out",
+		}).Send(c)
+	}
+
+	return utils.NewHTTPResponse(fiber.StatusOK, &fiber.Map{
+		"message": "OK",
+	}, "", nil, nil).Send(c)
+}

app/main.go

@@ -65,6 +65,7 @@ func main() {
 	// Controllers
 	app.Post("/login", controllers.LoginController)
 	app.Post("/register", controllers.RegisterController)
+	app.Post("/logout", controllers.LogoutController)
 	app.Post("/session/info", controllers.SessionInfoController)
 
 	if config.ENV == "development" {

app/repositories/sessions.go

@@ -97,3 +97,31 @@ func GetSessionCache(sessionID string) *SessionDetails {
 	masterlog.Debug("Session retrieved from cache", map[string]interface{}{"session_id": sessionID, "user_id": sessionDetails.UserID})
 	return &sessionDetails
 }
+
+func DeleteSession(sessionID string) error {
+	masterlog.Debug("Deleting session from database and cache", map[string]interface{}{"session_id": sessionID})
+	if err := DeleteSessionCache(sessionID); err != nil {
+		masterlog.Debug("Failed to delete session from cache", map[string]interface{}{"error": err.Error(), "session_id": sessionID})
+		return err
+	}
+	if err := database.DB.Where("id = ?", sessionID).Delete(&models.Session{}).Error; err != nil {
+		masterlog.Debug("Failed to delete session from database", map[string]interface{}{"error": err.Error(), "session_id": sessionID})
+		return err
+	}
+	masterlog.Debug("Session deleted from database and cache", map[string]interface{}{"session_id": sessionID})
+	return nil
+}
+
+func DeleteSessionCache(sessionID string) error {
+	masterlog.Debug("Deleting session from cache", map[string]interface{}{"session_id": sessionID})
+	if cache.Cache.Client == nil {
+		masterlog.Debug("Redis client not initialized", map[string]interface{}{"session_id": sessionID})
+		return nil
+	}
+	if err := cache.Cache.Client.Do(cache.Cache.Context, cache.Cache.Client.B().Del().Key(sessionID).Build()).Error(); err != nil {
+		masterlog.Debug("Failed to delete session from cache", map[string]interface{}{"error": err.Error(), "session_id": sessionID})
+		return err
+	}
+	masterlog.Debug("Session deleted from cache", map[string]interface{}{"session_id": sessionID})
+	return nil
+}

app/services/logout.go

@@ -0,0 +1,51 @@
+package services
+
+import (
+	"errors"
+	"fmt"
+
+	"git.secnex.io/secnex/auth-api/config"
+	"git.secnex.io/secnex/auth-api/repositories"
+	"github.com/golang-jwt/jwt/v5"
+	"github.com/google/uuid"
+)
+
+func Logout(sessionToken string) error {
+	claims, err := jwt.ParseWithClaims(sessionToken, &jwt.MapClaims{}, func(token *jwt.Token) (interface{}, error) {
+		return []byte(config.CONFIG.JwtSecret), nil
+	})
+	if err != nil {
+		return err
+	}
+	if !claims.Valid {
+		return errors.New("invalid token")
+	}
+
+	mapClaims := claims.Claims.(*jwt.MapClaims)
+	subValue, ok := (*mapClaims)["sub"]
+	if !ok {
+		return errors.New("sub claim not found")
+	}
+
+	var sessionID string
+	switch v := subValue.(type) {
+	case string:
+		sessionID = v
+	case uuid.UUID:
+		sessionID = v.String()
+	default:
+		sessionID = fmt.Sprintf("%v", v)
+	}
+
+	err = repositories.DeleteSessionCache(sessionID)
+	if err != nil {
+		return err
+	}
+
+	err = repositories.DeleteSession(sessionID)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}