updated dash

internal/handlers/alerts.go

@@ -3,6 +3,7 @@ package handlers
 import (
 	"context"
 	"fmt"
+	"log"
 	"net/http"
 	"strconv"
 	"strings"
@@ -20,20 +21,32 @@ func NewAlertsHandler(deps Deps) *AlertsHandler {
 	return &AlertsHandler{deps: deps}
 }
 
+const alertsPerPage = 50
+
 // AlertsData is passed to the alerts template.
 type AlertsData struct {
 	PageData
-	Alerts []crowdsec.Alert
-	Filter crowdsec.AlertFilter
+	Alerts      []crowdsec.Alert
+	Filter      crowdsec.AlertFilter
+	Page        int
+	HasNext     bool
+	ShowUpdates bool
 }
 
-// List renders the alerts list.
+// List renders the paginated alerts list.
 func (h *AlertsHandler) List(w http.ResponseWriter, r *http.Request) {
 	ctx, cancel := context.WithTimeout(r.Context(), 15*time.Second)
 	defer cancel()
 
+	page, _ := strconv.Atoi(r.URL.Query().Get("page"))
+	if page < 1 {
+		page = 1
+	}
+	showUpdates := r.URL.Query().Get("show_updates") == "1"
+
 	filter := crowdsec.AlertFilter{
-		Limit:    200,
+		Limit:    alertsPerPage + 1,
+		Offset:   (page - 1) * alertsPerPage,
 		Scenario: r.URL.Query().Get("scenario"),
 		IP:       r.URL.Query().Get("ip"),
 		Since:    r.URL.Query().Get("since"),
@@ -41,19 +54,34 @@ func (h *AlertsHandler) List(w http.ResponseWriter, r *http.Request) {
 
 	alerts, err := h.deps.LAPI.ListAlerts(ctx, filter)
 	if err != nil {
-		h.deps.Renderer.RenderError(w, http.StatusBadGateway, "failed to fetch alerts")
+		log.Printf("alerts: LAPI error: %v", err)
+		pd := NewPageData(r, "Alerts", h.deps.CLIAvailable, h.deps.PollInterval)
+		if crowdsec.IsForbidden(err) {
+			pd = pd.WithFlash("error", "Access denied: re-register machine with admin rights: cscli machines delete crowdsec-dashy && cscli machines add crowdsec-dashy -a")
+		} else {
+			pd = pd.WithFlash("error", "Failed to fetch alerts from LAPI.")
+		}
+		h.deps.Renderer.Render(w, "alerts", AlertsData{PageData: pd})
 		return
 	}
 
+	hasNext := len(alerts) > alertsPerPage
+	if hasNext {
+		alerts = alerts[:alertsPerPage]
+	}
+
 	pd := NewPageData(r, "Alerts", h.deps.CLIAvailable, h.deps.PollInterval)
 	if f := readFlash(r); f.Message != "" {
 		pd.Flash = f
 	}
 
 	h.deps.Renderer.Render(w, "alerts", AlertsData{
-		PageData: pd,
-		Alerts:   alerts,
-		Filter:   filter,
+		PageData:    pd,
+		Alerts:      alerts,
+		Filter:      filter,
+		Page:        page,
+		HasNext:     hasNext,
+		ShowUpdates: showUpdates,
 	})
 }