add page for item and route for deleting items

main.go

@@ -8,6 +8,7 @@ import (
 	"log"
 	"net/http"
 	"os"
+	"strconv"
 	"time"
 
 	"github.com/PuerkitoBio/goquery"
@@ -168,6 +169,47 @@ END;
 		}
 	})
 
+	mux.HandleFunc("GET /items/{id}", func(w http.ResponseWriter, r *http.Request) {
+		id, err := strconv.Atoi(r.PathValue("id"))
+		if err != nil {
+			http.Error(w, err.Error(), 500)
+			return
+		}
+
+		row := db.QueryRowx("SELECT * FROM items WHERE id = ?", id)
+		if row.Err() != nil {
+			http.Error(w, fmt.Sprintf("item not found: %v", row.Err()), 404)
+			return
+		}
+
+		item := &Item{}
+		if err := row.StructScan(item); err != nil {
+			http.Error(w, fmt.Sprintf("failed to scan item to struct: %v", err), 500)
+			return
+		}
+
+		tmpl.ExecuteTemplate(w, "item.html", struct {
+			Item *Item
+		}{
+			Item: item,
+		})
+	})
+
+	mux.HandleFunc("POST /items/{id}/delete", func(w http.ResponseWriter, r *http.Request) {
+		id, err := strconv.Atoi(r.PathValue("id"))
+		if err != nil {
+			http.Error(w, err.Error(), 500)
+			return
+		}
+
+		if _, err := db.Exec("DELETE FROM items WHERE id = ?", id); err != nil {
+			http.Error(w, fmt.Sprintf("failed to delete item: %v", err), 500)
+			return
+		}
+
+		http.Redirect(w, r, "/", http.StatusFound)
+	})
+
 	log.Println("starting http server")
 	if err := http.ListenAndServe(":5000", mux); err != nil {
 		log.Fatalf("failed to start http server: %v\n", err)