various: HTTP server; migrate to cobra pattern for repository

Signed-off-by: NotAShelf <raf@notashelf.dev>
Change-Id: Ifac6e992b77dfaf92e3059944aa871f16a6a6964

cmd/watchdog/main.go

@@ -0,0 +1,15 @@
+package watchdog
+
+import (
+	"flag"
+	"log"
+)
+
+func Main() {
+	configPath := flag.String("config", "config.yaml", "path to config file")
+	flag.Parse()
+
+	if err := Run(*configPath); err != nil {
+		log.Fatalf("Error: %v", err)
+	}
+}

cmd/watchdog/root.go

@@ -0,0 +1,68 @@
+package watchdog
+
+import (
+	"fmt"
+	"log"
+	"net/http"
+	"os"
+
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/prometheus/client_golang/prometheus/promhttp"
+	"notashelf.dev/watchdog/internal/aggregate"
+	"notashelf.dev/watchdog/internal/api"
+	"notashelf.dev/watchdog/internal/config"
+	"notashelf.dev/watchdog/internal/normalize"
+)
+
+func Run(configPath string) error {
+	// Load configuration
+	cfg, err := config.Load(configPath)
+	if err != nil {
+		return fmt.Errorf("failed to load config: %w", err)
+	}
+
+	log.Printf("Loaded config for domain: %s", cfg.Site.Domain)
+
+	// Initialize components
+	pathNormalizer := normalize.NewPathNormalizer(cfg.Site.Path)
+	pathRegistry := aggregate.NewPathRegistry(cfg.Limits.MaxPaths)
+	refRegistry := normalize.NewReferrerRegistry(cfg.Limits.MaxSources)
+	metricsAgg := aggregate.NewMetricsAggregator(pathRegistry, *cfg)
+
+	// Register Prometheus metrics
+	promRegistry := prometheus.NewRegistry()
+	metricsAgg.MustRegister(promRegistry)
+
+	// Create HTTP handlers
+	ingestionHandler := api.NewIngestionHandler(*cfg, pathNormalizer, pathRegistry, refRegistry, metricsAgg)
+
+	// Setup routes
+	mux := http.NewServeMux()
+
+	// Metrics endpoint
+	mux.Handle(cfg.Server.MetricsPath, promhttp.HandlerFor(promRegistry, promhttp.HandlerOpts{
+		EnableOpenMetrics: true,
+	}))
+
+	// Ingestion endpoint
+	mux.Handle(cfg.Server.IngestionPath, ingestionHandler)
+
+	// Health check endpoint
+	mux.HandleFunc("/health", func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(http.StatusOK)
+		w.Write([]byte("OK"))
+	})
+
+	// Serve static files from /web/ if the directory exists
+	if info, err := os.Stat("web"); err == nil && info.IsDir() {
+		log.Println("Serving static files from /web/")
+		mux.Handle("/web/", http.StripPrefix("/web/", http.FileServer(http.Dir("web"))))
+	}
+
+	// Start server
+	log.Printf("Starting server on %s", cfg.Server.ListenAddr)
+	log.Printf("Metrics endpoint: %s", cfg.Server.MetricsPath)
+	log.Printf("Ingestion endpoint: %s", cfg.Server.IngestionPath)
+
+	return http.ListenAndServe(cfg.Server.ListenAddr, mux)
+}