small fix, don't worry about it

backend/middleware/error_handler.go

@@ -0,0 +1,80 @@
+package middleware
+
+import (
+	"log"
+	"net/http"
+	"runtime/debug"
+
+	"github.com/gin-gonic/gin"
+)
+
+// ErrorResponse represents a standardized error response
+type ErrorResponse struct {
+	Error   string `json:"error"`
+	Message string `json:"message,omitempty"`
+	Code    string `json:"code,omitempty"`
+	Details interface{} `json:"details,omitempty"`
+}
+
+// ErrorHandlerMiddleware handles panics and errors
+func ErrorHandlerMiddleware() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		defer func() {
+			if err := recover(); err != nil {
+				// Log the error with stack trace
+				log.Printf("Panic recovered: %v\n%s", err, debug.Stack())
+
+				// Return error response
+				c.JSON(http.StatusInternalServerError, ErrorResponse{
+					Error:   "Internal server error",
+					Message: "An unexpected error occurred. Please try again later.",
+					Code:    "INTERNAL_ERROR",
+				})
+
+				c.Abort()
+			}
+		}()
+
+		c.Next()
+
+		// Check for errors after request processing
+		if len(c.Errors) > 0 {
+			err := c.Errors.Last()
+			log.Printf("Request error: %v", err.Err)
+
+			// Return appropriate error response based on status code
+			statusCode := c.Writer.Status()
+			if statusCode == http.StatusOK {
+				statusCode = http.StatusInternalServerError
+			}
+
+			c.JSON(statusCode, ErrorResponse{
+				Error:   err.Error(),
+				Message: "Request processing failed",
+				Code:    "REQUEST_ERROR",
+			})
+		}
+	}
+}
+
+// NotFoundHandler handles 404 errors
+func NotFoundHandler() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		c.JSON(http.StatusNotFound, ErrorResponse{
+			Error:   "Not found",
+			Message: "The requested resource was not found",
+			Code:    "NOT_FOUND",
+		})
+	}
+}
+
+// MethodNotAllowedHandler handles 405 errors
+func MethodNotAllowedHandler() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		c.JSON(http.StatusMethodNotAllowed, ErrorResponse{
+			Error:   "Method not allowed",
+			Message: "The HTTP method is not allowed for this endpoint",
+			Code:    "METHOD_NOT_ALLOWED",
+		})
+	}
+}