webhooker/internal/server/routes.go

package server

import (
	"net/http"
	"time"

	sentryhttp "github.com/getsentry/sentry-go/http"
	"github.com/go-chi/chi"
	"github.com/go-chi/chi/middleware"
	"github.com/prometheus/client_golang/prometheus/promhttp"
	"sneak.berlin/go/webhooker/static"
)

// maxFormBodySize is the maximum allowed request body size (in bytes) for
// form POST endpoints.  1 MB is generous for any form submission while
// preventing abuse from oversized payloads.
const maxFormBodySize int64 = 1 * 1024 * 1024 // 1 MB

// SetupRoutes configures all HTTP routes and middleware on the server's router.
func (s *Server) SetupRoutes() {
	s.router = chi.NewRouter()

	// Global middleware stack — applied to every request.
	s.router.Use(middleware.Recoverer)
	s.router.Use(middleware.RequestID)
	s.router.Use(s.mw.SecurityHeaders())
	s.router.Use(s.mw.Logging())

	// Metrics middleware (only if credentials are configured)
	if s.params.Config.MetricsUsername != "" {
		s.router.Use(s.mw.Metrics())
	}

	s.router.Use(s.mw.CORS())
	s.router.Use(middleware.Timeout(60 * time.Second))

	// Sentry error reporting (if SENTRY_DSN is set). Repanic is true
	// so panics still bubble up to the Recoverer middleware above.
	if s.sentryEnabled {
		sentryHandler := sentryhttp.New(sentryhttp.Options{
			Repanic: true,
		})
		s.router.Use(sentryHandler.Handle)
	}

	// Routes
	s.router.Get("/", s.h.HandleIndex())

	s.router.Mount("/s", http.StripPrefix("/s", http.FileServer(http.FS(static.Static))))

	s.router.Route("/api/v1", func(_ chi.Router) {
		// TODO: Add API routes here
	})

	s.router.Get(
		"/.well-known/healthcheck",
		s.h.HandleHealthCheck(),
	)

	// set up authenticated /metrics route:
	if s.params.Config.MetricsUsername != "" {
		s.router.Group(func(r chi.Router) {
			r.Use(s.mw.MetricsAuth())
			r.Get("/metrics", http.HandlerFunc(promhttp.Handler().ServeHTTP))
		})
	}

	// pages that are rendered server-side — CSRF-protected, body-size
	// limited, and with per-IP rate limiting on the login endpoint.
	s.router.Route("/pages", func(r chi.Router) {
		r.Use(s.mw.CSRF())
		r.Use(s.mw.MaxBodySize(maxFormBodySize))

		// Login page — rate-limited to prevent brute-force attacks
		r.Group(func(r chi.Router) {
			r.Use(s.mw.LoginRateLimit())
			r.Get("/login", s.h.HandleLoginPage())
			r.Post("/login", s.h.HandleLoginSubmit())
		})

		// Logout (auth required)
		r.Post("/logout", s.h.HandleLogout())
	})

	// User profile routes
	s.router.Route("/user/{username}", func(r chi.Router) {
		r.Use(s.mw.CSRF())
		r.Get("/", s.h.HandleProfile())
	})

	// Webhook management routes (require authentication, CSRF-protected)
	s.router.Route("/sources", func(r chi.Router) {
		r.Use(s.mw.CSRF())
		r.Use(s.mw.RequireAuth())
		r.Use(s.mw.MaxBodySize(maxFormBodySize))
		r.Get("/", s.h.HandleSourceList())             // List all webhooks
		r.Get("/new", s.h.HandleSourceCreate())        // Show create form
		r.Post("/new", s.h.HandleSourceCreateSubmit()) // Handle create submission
	})

	s.router.Route("/source/{sourceID}", func(r chi.Router) {
		r.Use(s.mw.CSRF())
		r.Use(s.mw.RequireAuth())
		r.Use(s.mw.MaxBodySize(maxFormBodySize))
		r.Get("/", s.h.HandleSourceDetail())                                       // View webhook details
		r.Get("/edit", s.h.HandleSourceEdit())                                     // Show edit form
		r.Post("/edit", s.h.HandleSourceEditSubmit())                              // Handle edit submission
		r.Post("/delete", s.h.HandleSourceDelete())                                // Delete webhook
		r.Get("/logs", s.h.HandleSourceLogs())                                     // View webhook logs
		r.Post("/entrypoints", s.h.HandleEntrypointCreate())                       // Add entrypoint
		r.Post("/entrypoints/{entrypointID}/delete", s.h.HandleEntrypointDelete()) // Delete entrypoint
		r.Post("/entrypoints/{entrypointID}/toggle", s.h.HandleEntrypointToggle()) // Toggle entrypoint active
		r.Post("/targets", s.h.HandleTargetCreate())                               // Add target
		r.Post("/targets/{targetID}/delete", s.h.HandleTargetDelete())             // Delete target
		r.Post("/targets/{targetID}/toggle", s.h.HandleTargetToggle())             // Toggle target active
	})

	// Entrypoint endpoint — accepts incoming webhook POST requests only.
	// Using HandleFunc so the handler itself can return 405 for non-POST
	// methods (chi's Method routing returns 405 without Allow header).
	s.router.HandleFunc("/webhook/{uuid}", s.h.HandleWebhook())
}