add paste functionality

Backend/main.go

@@ -1,31 +1,46 @@
 package main
 
 import (
-	"log"
+	"context"
+	"log/slog"
 	"net/http"
 	"os"
 	"path/filepath"
+	"time"
+
+	"golang.org/x/time/rate"
+	"smpark.in/paste"
 )
 
 func main() {
 	publicDir := "./public"
 	spaIndex := filepath.Join(publicDir, "app", "index.html")
 
+	store := paste.NewStore()
+
+	go paste.StartExpiryWorker(context.Background(), store, 30*time.Second)
+
+	rl := paste.NewRateLimiter(rate.Every(30*time.Second), 1)
+
+	handlers := paste.NewHandlers(store)
+	http.HandleFunc("POST /api/paste", rl.Middleware(handlers.Create))
+	http.HandleFunc("GET /api/paste/{id}/raw", handlers.GetRaw)
+	http.HandleFunc("GET /api/paste/{id}", handlers.Get)
+
 	fs := http.FileServer(http.Dir(publicDir))
 
 	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
-		// Try to serve the static file
 		path := filepath.Join(publicDir, filepath.Clean(r.URL.Path))
 		if info, err := os.Stat(path); err == nil && !info.IsDir() {
 			fs.ServeHTTP(w, r)
 			return
 		}
-
-		// Fall back to SPA index for client-side routing
 		http.ServeFile(w, r, spaIndex)
 	})
 
 	addr := ":8080"
-	log.Printf("Listening on %s", addr)
-	log.Fatal(http.ListenAndServe(addr, nil))
+	slog.Info("listening", "addr", addr)
+	if err := http.ListenAndServe(addr, nil); err != nil {
+		slog.Error("server error", "err", err)
+	}
 }