Add basic webserver skeleton with healthcheck

internal/server/routes.go

@@ -0,0 +1,53 @@
+package server
+
+import (
+	"net/http"
+	"time"
+
+	sentryhttp "github.com/getsentry/sentry-go/http"
+	"github.com/go-chi/chi/v5"
+	"github.com/go-chi/chi/v5/middleware"
+	"github.com/prometheus/client_golang/prometheus/promhttp"
+)
+
+// SetupRoutes configures all HTTP routes.
+func (s *Server) SetupRoutes() {
+	s.router = chi.NewRouter()
+
+	s.router.Use(middleware.Recoverer)
+	s.router.Use(middleware.RequestID)
+	s.router.Use(s.mw.Logging())
+
+	// Add metrics middleware only if credentials are configured
+	if s.config.MetricsUsername != "" {
+		s.router.Use(s.mw.Metrics())
+	}
+
+	s.router.Use(s.mw.CORS())
+	s.router.Use(middleware.Timeout(60 * time.Second))
+
+	if s.sentryEnabled {
+		sentryHandler := sentryhttp.New(sentryhttp.Options{
+			Repanic: true,
+		})
+		s.router.Use(sentryHandler.Handle)
+	}
+
+	// Health check endpoint
+	s.router.Get("/.well-known/healthcheck.json", s.h.HandleHealthCheck())
+
+	// Robots.txt
+	s.router.Get("/robots.txt", s.h.HandleRobotsTxt())
+
+	// Main image proxy route
+	// /v1/image/<host>/<path>/<width>x<height>.<format>
+	s.router.Get("/v1/image/*", s.h.HandleImage())
+
+	// Metrics endpoint with auth
+	if s.config.MetricsUsername != "" {
+		s.router.Group(func(r chi.Router) {
+			r.Use(s.mw.MetricsAuth())
+			r.Get("/metrics", http.HandlerFunc(promhttp.Handler().ServeHTTP))
+		})
+	}
+}