完成了“后台审计日志”

backend/internal/modules/adminaudit/handler.go

@@ -0,0 +1,64 @@
+package adminaudit
+
+import (
+	"errors"
+	"net/http"
+	"strconv"
+
+	"hfb_sys/backend/pkg/response"
+
+	"github.com/gin-gonic/gin"
+)
+
+type Handler struct {
+	service *Service
+}
+
+func NewHandler(service *Service) *Handler {
+	return &Handler{service: service}
+}
+
+func (h *Handler) List(c *gin.Context) {
+	query, ok := parseQuery(c)
+	if !ok {
+		return
+	}
+	items, err := h.service.List(query)
+	if err != nil {
+		writeAuditError(c, err)
+		return
+	}
+	response.OK(c, gin.H{"items": items})
+}
+
+func parseQuery(c *gin.Context) (Query, bool) {
+	var query Query
+	if raw := c.Query("actor_id"); raw != "" {
+		value, err := strconv.ParseUint(raw, 10, 64)
+		if err != nil || value == 0 {
+			response.BadRequest(c, "管理员 ID 不正确")
+			return query, false
+		}
+		query.ActorID = value
+	}
+	if raw := c.Query("limit"); raw != "" {
+		value, err := strconv.Atoi(raw)
+		if err != nil || value <= 0 {
+			response.BadRequest(c, "查询条数不正确")
+			return query, false
+		}
+		query.Limit = value
+	}
+	query.Action = c.Query("action")
+	query.BizType = c.Query("biz_type")
+	return query, true
+}
+
+func writeAuditError(c *gin.Context, err error) {
+	switch {
+	case errors.Is(err, ErrDependencyUnavailable):
+		response.ServiceUnavailable(c, "数据库未连接")
+	default:
+		response.Error(c, http.StatusInternalServerError, "internal_error", "审计日志服务暂时不可用")
+	}
+}