implement running options

main.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"flag"
 	"log/slog"
 	"net/http"
 
@@ -8,12 +9,17 @@ import (
 	"github.com/csehviktor/pastebin/store"
 )
 
-const addr = ":3000"
-
 func main() {
+	addrPtr := flag.String("addr", ":3000", "port to listen on")
+	maxSizePtr := flag.Int("max-size", 32*1024, "maximum size of a paste in bytes")
+	flag.Parse()
+
+	addr := *addrPtr
+	maxSize := int64(*maxSizePtr)
+
 	mux := http.NewServeMux()
 	store := store.NewMemoryStore()
-	httpHandler := handler.NewHandler(store)
+	httpHandler := handler.NewHandler(store, maxSize)
 
 	mux.HandleFunc("GET /style.css", func(w http.ResponseWriter, r *http.Request) {
 		http.ServeFile(w, r, "view/style.css")
@@ -23,7 +29,7 @@ func main() {
 	mux.HandleFunc("GET /{id}", httpHandler.HandleGet)
 	mux.HandleFunc("GET /{id}/{theme}", httpHandler.HandleGet)
 
-	slog.Info("starting http server on", "addr", addr)
+	slog.Info("starting http server", "addr", addr, "maxSize", maxSize)
 	err := http.ListenAndServe(addr, mux)
 	if err != nil {
 		panic(err)