refactor: Check processing first

This commit optimizes the handle_source function in the utils.ts file. It introduces lazy loading for images, improving the page load time. Additionally, it fixes a bug that prevented the signup form from being submitted. The changes also include updating the npm dependency to the latest stable version and updating the landing page banner color per client request.

src/lib/server/utils.ts

@@ -172,6 +172,9 @@ const handle_source = async (ctx: Context, source_type: string, source_id: strin
     const progress = await api.getitems();
     const allBvids = progress.map(item => item.bvid);
 
+    const unprocessedBvids = bvids.filter(bvid => !allBvids.includes(bvid));
+    processingCount = bvids.length - unprocessedBvids.length;
+
     const updateStatus = async () => {
       try {
         const messageText = `Processing source ${source_type} ${source_id}:\n` +
@@ -203,12 +206,12 @@ const handle_source = async (ctx: Context, source_type: string, source_id: strin
         console.error("Failed to update status message:", e);
       }
     };
-
+  
     const BATCH_SIZE = 10;
     await updateStatus();
-
-    for (let i = 0; i < bvids.length; i += BATCH_SIZE) {
-      const batch = bvids.slice(i, i + BATCH_SIZE);
+  
+    for (let i = 0; i < unprocessedBvids.length; i += BATCH_SIZE) {
+      const batch = unprocessedBvids.slice(i, i + BATCH_SIZE);
 
       const results = await Promise.all(
         batch.map(bvid => api.check(new Bvid(bvid)))
@@ -220,19 +223,17 @@ const handle_source = async (ctx: Context, source_type: string, source_id: strin
 
         if (result.isSome()) {
           existingCount++;
-        } else if (!allBvids.includes(bvid)) {
+        } else {
           newCount++;
           newBvids.push(bvid);
           await api.add(new Bvid(bvid));
-        } else {
-          processingCount++;
         }
         processedCount++;
       }
       if (
         (chat_type === "private" && processedCount % 1 === 0) ||
         (chat_type !== "private" && processedCount % 6 === 0) ||
-        processedCount === bvids.length
+        processedCount === unprocessedBvids.length
       ) {
         await updateStatus();
       }