fix: lower db pressure and make use of type

Author: fengkx

source/proxies/rss-feed.ts

@@ -149,7 +149,9 @@ export async function getSubscribedCountByUserId(
     }
 }
 
-export async function updateFeed(feed: Partial<Feed>): Promise<number> {
+export async function updateFeed(
+    feed: Partial<Feed> & { feed_id: number }
+): Promise<number> {
     try {
         return await db('rss_feed').where('feed_id', feed.feed_id).update(feed);
     } catch (e) {

source/utils/fetch.ts

@@ -65,14 +65,19 @@ async function fetch(feedModal: Feed): Promise<Option<any[]>> {
         const feed = await parseString(res.body);
 
         const items = feed.items.slice(0, item_num);
-        const updatedFeedModal: Partial<Feed> = {
+        const updatedFeedModal: Partial<Feed> & { feed_id: number } = {
             feed_id: feedModal.feed_id,
             error_count: 0
         };
-        if (feed.title !== feedModal.feed_title) {
-            updatedFeedModal.feed_title = feed.title;
+        if (
+            feedModal.error_count !== 0 ||
+            feed.title !== feedModal.feed_title
+        ) {
+            if (feed.title !== feedModal.feed_title) {
+                updatedFeedModal.feed_title = feed.title;
+            }
+            await updateFeed(updatedFeedModal);
         }
-        await updateFeed(updatedFeedModal);
         return Optional(
             items.map((item) => {
                 const { link, title, id } = item;