add scraping the torrent topics rss files

helper/web/json.go

@@ -0,0 +1,35 @@
+package web
+
+import (
+	"encoding/json"
+	"log"
+	"net/http"
+)
+
+type errorResponse struct {
+	Error string `json:"error"`
+}
+
+func respondWithJSON(w http.ResponseWriter, code int, payload interface{}) {
+	data, err := json.Marshal(payload)
+	if err != nil {
+		log.Printf("failed to marshal JSON response: %v\n", err)
+		w.WriteHeader(http.StatusInternalServerError)
+		return
+	}
+
+	w.Header().Add("Content-Type", "application/json")
+	w.WriteHeader(code)
+	_, err = w.Write(data)
+	if err != nil {
+		log.Printf("failed to write data to output buffer: %v\n", err)
+	}
+}
+
+func respondWithError(w http.ResponseWriter, code int, message string) {
+	if code >= http.StatusInternalServerError {
+		log.Println("responding with 5xx error:", message)
+	}
+
+	respondWithJSON(w, code, errorResponse{Error: message})
+}