feat(auth): Add logout route

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
+}