base dashboard and login

internal/handlers/api.go

@@ -0,0 +1,73 @@
+package handlers
+
+import (
+	"context"
+	"encoding/json"
+	"net/http"
+	"time"
+
+	"crowdsec-dashy/internal/crowdsec"
+)
+
+// APIHandler serves the internal JSON API consumed by frontend JS.
+type APIHandler struct {
+	deps Deps
+}
+
+func NewAPIHandler(deps Deps) *APIHandler {
+	return &APIHandler{deps: deps}
+}
+
+type statsResponse struct {
+	Decisions int  `json:"decisions"`
+	Alerts    int  `json:"alerts"`
+	Bouncers  int  `json:"bouncers"`
+	Machines  int  `json:"machines"`
+	Healthy   bool `json:"healthy"`
+}
+
+type healthResponse struct {
+	Healthy      bool `json:"healthy"`
+	CLIAvailable bool `json:"cli_available"`
+}
+
+// Stats returns dashboard summary counts.
+func (h *APIHandler) Stats(w http.ResponseWriter, r *http.Request) {
+	ctx, cancel := context.WithTimeout(r.Context(), 15*time.Second)
+	defer cancel()
+
+	decisions, _ := h.deps.LAPI.ListDecisions(ctx, crowdsec.DecisionFilter{Limit: 500})
+	alerts, _ := h.deps.LAPI.ListAlerts(ctx, crowdsec.AlertFilter{Limit: 500})
+
+	resp := statsResponse{
+		Decisions: len(decisions),
+		Alerts:    len(alerts),
+		Healthy:   h.deps.LAPI.IsHealthy(ctx),
+	}
+
+	if h.deps.CLIAvailable {
+		bouncers, _ := h.deps.CLI.ListBouncers(ctx)
+		machines, _ := h.deps.CLI.ListMachines(ctx)
+		resp.Bouncers = len(bouncers)
+		resp.Machines = len(machines)
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	if err := json.NewEncoder(w).Encode(resp); err != nil {
+		http.Error(w, "internal error", http.StatusInternalServerError)
+	}
+}
+
+// Health returns LAPI health and cscli availability.
+func (h *APIHandler) Health(w http.ResponseWriter, r *http.Request) {
+	ctx, cancel := context.WithTimeout(r.Context(), 5*time.Second)
+	defer cancel()
+
+	w.Header().Set("Content-Type", "application/json")
+	if err := json.NewEncoder(w).Encode(healthResponse{
+		Healthy:      h.deps.LAPI.IsHealthy(ctx),
+		CLIAvailable: h.deps.CLIAvailable,
+	}); err != nil {
+		http.Error(w, "internal error", http.StatusInternalServerError)
+	}
+}