fix: delete detected no longer feeds

cmd/rsslay/main.go

@@ -134,6 +134,7 @@ func (r *Relay) Init() error {
 					parsedFeed, err := feed.ParseFeed(entity.URL)
 					if err != nil {
 						log.Printf("failed to parse feed at url %q: %v", entity.URL, err)
+						feed.DeleteInvalidFeed(entity.URL, r.db)
 						continue
 					}
 
@@ -212,6 +213,7 @@ func (b store) QueryEvents(filter *nostr.Filter) ([]nostr.Event, error) {
 		parsedFeed, err := feed.ParseFeed(entity.URL)
 		if err != nil {
 			log.Printf("failed to parse feed at url %q: %v", entity.URL, err)
+			feed.DeleteInvalidFeed(entity.URL, relayInstance.db)
 			continue
 		}
 

pkg/feed/feed.go

@@ -3,10 +3,12 @@ package feed
 import (
 	"crypto/hmac"
 	"crypto/sha256"
+	"database/sql"
 	"encoding/hex"
 	"encoding/json"
 	"fmt"
 	"github.com/piraces/rsslay/pkg/helpers"
+	"log"
 	"net/http"
 	"strings"
 	"time"
@@ -209,3 +211,11 @@ func PrivateKeyFromFeed(url string, secret string) string {
 	r := m.Sum(nil)
 	return hex.EncodeToString(r)
 }
+
+func DeleteInvalidFeed(url string, db *sql.DB) {
+	if _, err := db.Exec(`DELETE FROM feeds WHERE url=?`, url); err != nil {
+		log.Printf("failure to delete invalid feed: " + err.Error())
+	} else {
+		log.Printf("deleted invalid feed with url %q", url)
+	}
+}