first commit

apps/backend/internal/httpapi/errors.go

@@ -0,0 +1,62 @@
+package httpapi
+
+import (
+	"net/http"
+	"strings"
+
+	"github.com/gin-gonic/gin"
+	"github.com/google/uuid"
+)
+
+const requestIDContextKey = "requestID"
+
+func requestIDMiddleware() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		requestID := strings.TrimSpace(c.GetHeader("X-Request-Id"))
+		if requestID == "" {
+			requestID = uuid.NewString()
+		}
+		c.Set(requestIDContextKey, requestID)
+		c.Header("X-Request-Id", requestID)
+		c.Next()
+	}
+}
+
+func requestIDFromContext(c *gin.Context) string {
+	if value, exists := c.Get(requestIDContextKey); exists {
+		if requestID, ok := value.(string); ok {
+			return requestID
+		}
+	}
+	return ""
+}
+
+func (s *Server) writeStatusError(c *gin.Context, status int, message string) {
+	code := "internal_error"
+	switch status {
+	case http.StatusBadRequest:
+		code = "bad_request"
+	case http.StatusUnauthorized:
+		code = "unauthorized"
+	case http.StatusForbidden:
+		code = "forbidden"
+	case http.StatusNotFound:
+		code = "not_found"
+	case http.StatusConflict:
+		code = "conflict"
+	case http.StatusBadGateway:
+		code = "upstream_error"
+	case http.StatusServiceUnavailable:
+		code = "service_unavailable"
+	}
+	if strings.TrimSpace(message) == "" {
+		message = http.StatusText(status)
+	}
+	c.JSON(status, gin.H{
+		"error": gin.H{
+			"code":      code,
+			"message":   message,
+			"requestId": requestIDFromContext(c),
+		},
+	})
+}