feat(api): add namespaces, batch ops, and admin logs

internal/middleware/operation_log.go

@@ -0,0 +1,52 @@
+package middleware
+
+import (
+	"net/http"
+	"strings"
+	"time"
+
+	"github.com/ez-api/ez-api/internal/model"
+	"github.com/gin-gonic/gin"
+	"gorm.io/gorm"
+)
+
+// OperationLogMiddleware records admin mutating operations.
+func OperationLogMiddleware(db *gorm.DB) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		start := time.Now()
+		c.Next()
+
+		if db == nil {
+			return
+		}
+		switch c.Request.Method {
+		case http.MethodGet, http.MethodHead, http.MethodOptions:
+			return
+		}
+
+		errMsg := ""
+		if len(c.Errors) > 0 {
+			errMsg = c.Errors.String()
+		}
+		reqID := ""
+		if v, ok := c.Get("request_id"); ok {
+			if s, ok := v.(string); ok {
+				reqID = s
+			}
+		}
+
+		log := model.OperationLog{
+			Actor:        "admin",
+			Method:       c.Request.Method,
+			Path:         c.Request.URL.Path,
+			Query:        strings.TrimSpace(c.Request.URL.RawQuery),
+			StatusCode:   c.Writer.Status(),
+			LatencyMs:    time.Since(start).Milliseconds(),
+			ClientIP:     c.ClientIP(),
+			RequestID:    reqID,
+			UserAgent:    c.GetHeader("User-Agent"),
+			ErrorMessage: errMsg,
+		}
+		_ = db.Create(&log).Error
+	}
+}