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services/discord-gateway/src/modules/ai-moderation/llmModerationClient.ts

@@ -1094,7 +1094,14 @@ async function _runSingleMediaAnalysis(
 
   const maxDimension = config.AI_LLM_IMAGE_MAX_DIMENSION ?? 1024;
 
-  // ── 1. Download attachments for this message (with resize — R5) ──
+  // ── 1-3. Parallel download of ALL media sources ──
+  // Build all download promises upfront and execute them in one Promise.all.
+  // Attachment, URL, sticker/emoji downloads are fully independent of each other.
+  // An 8-image cap is enforced across all sources combined.
+
+  const downloadPromises: Array<Promise<void>> = [];
+
+  // ── Attachment downloads ──
   const msgAttachments = (allAttachments ?? [])
     .filter(
       (att) =>
@@ -1104,8 +1111,9 @@ async function _runSingleMediaAnalysis(
     )
     .slice(0, 8);
 
-  await Promise.all(
-    msgAttachments.map(async (att) => {
+  for (const att of msgAttachments) {
+    downloadPromises.push(
+      (async () => {
         const urlToUse = getAttachmentImageUrl(att);
         if (!urlToUse) return;
 
@@ -1159,7 +1167,6 @@ async function _runSingleMediaAnalysis(
             return;
           }
 
-        // Resize before base64 encoding (R5)
           const { data: resizedBuffer, mimeType: resizedMime } =
             await resizeImageForVision(imageBytes, maxDimension);
 
@@ -1170,8 +1177,10 @@ async function _runSingleMediaAnalysis(
             sourceLabel: `[gambar di atas adalah attachment ${att.filename} dari pesan id=${att.message_id}]`,
           };
           const existing = imageMap.get(targetId) ?? [];
+          if (existing.length < 8) {
             existing.push(part);
             imageMap.set(targetId, existing);
+          }
         } catch (err) {
           log.warn(
             {
@@ -1183,20 +1192,19 @@ async function _runSingleMediaAnalysis(
         } finally {
           clearTimeout(timeoutId);
         }
-    }),
+      })(),
     );
+  }
 
-  // ── 2. Fetch URLs found in message text ──
-  const content = target.edited_content ?? target.content;
+  // ── URL fetch promises ──
   const urls = extractUrlsFromText(content).slice(0, 3);
+  const urlWebTexts: string[] = [];
 
-  if (urls.length > 0) {
-    const webTexts: string[] = [];
-    await Promise.all(
-      urls.map(async (url) => {
+  for (const url of urls) {
+    downloadPromises.push(
+      (async () => {
         const result = await fetchUrlSafely(url);
         if (result.type === "image" && result.data && result.mimeType) {
-          // Resize fetched images too (R5)
           const { data: resizedBuffer, mimeType: resizedMime } =
             await resizeImageForVision(result.data, maxDimension);
 
@@ -1207,17 +1215,18 @@ async function _runSingleMediaAnalysis(
             sourceLabel: `[gambar di atas berasal dari link ${url} pada pesan id=${targetId}]`,
           };
           const existing = imageMap.get(targetId) ?? [];
+          if (existing.length < 8) {
             existing.push(part);
             imageMap.set(targetId, existing);
-        } else if (result.type === "text" && result.textContent) {
-          webTexts.push(`[Isi Web dari ${url}]: ${result.textContent}`);
           }
-      }),
+        } else if (result.type === "text" && result.textContent) {
+          urlWebTexts.push(`[Isi Web dari ${url}]: ${result.textContent}`);
+        }
+      })(),
     );
-    if (webTexts.length > 0) webTextMap.set(targetId, webTexts);
   }
 
-  // ── 3. Sticker / embed / custom emoji images ──
+  // ── Sticker / embed / custom emoji download promises ──
   const mediaEvidence = extractMessageMediaEvidence(target.metadata);
   const mediaCandidates: Array<{
     messageId: string;
@@ -1273,10 +1282,12 @@ async function _runSingleMediaAnalysis(
     })),
   ];
 
-  const remainingSlots = Math.max(0, 8 - (imageMap.get(targetId)?.length ?? 0));
+  for (const candidate of mediaCandidates) {
+    downloadPromises.push(
+      (async () => {
+        // Skip if we already have 8 images
+        if ((imageMap.get(targetId)?.length ?? 0) >= 8) return;
 
-  await Promise.all(
-    mediaCandidates.slice(0, remainingSlots).map(async (candidate) => {
         // Vision cache check before download
         const visionCacheKey = candidate.customEmojiId
           ? makeCustomEmojiCacheKey(candidate.customEmojiId)
@@ -1310,8 +1321,10 @@ async function _runSingleMediaAnalysis(
                 stickerName: candidate.stickerName,
               };
               const existing = imageMap.get(targetId) ?? [];
+              if (existing.length < 8) {
                 existing.push(part);
                 imageMap.set(targetId, existing);
+              }
               return;
             }
           } catch {
@@ -1322,7 +1335,6 @@ async function _runSingleMediaAnalysis(
         const result = await fetchUrlSafely(candidate.url);
         if (result.type !== "image" || !result.data || !result.mimeType) return;
 
-      // Resize sticker/emoji images too (R5)
         const { data: resizedBuffer, mimeType: resizedMime } =
           await resizeImageForVision(result.data, maxDimension);
 
@@ -1335,19 +1347,26 @@ async function _runSingleMediaAnalysis(
 
         const part: MessageImagePart = {
           type: "image_url",
-        image_url: {
-          url: `data:${resizedMime};base64,${base64}`,
-        },
+          image_url: { url: `data:${resizedMime};base64,${base64}` },
           sourceLabel: candidate.label,
           stickerName: candidate.stickerName,
           customEmojiId: candidate.customEmojiId,
           customEmojiName: candidate.customEmojiName,
         };
         const existing = imageMap.get(targetId) ?? [];
+        if (existing.length < 8) {
           existing.push(part);
           imageMap.set(targetId, existing);
-    }),
+        }
+      })(),
     );
+  }
+
+  // Execute ALL media downloads in parallel
+  await Promise.all(downloadPromises);
+
+  // Collect web text results from URL fetches
+  if (urlWebTexts.length > 0) webTextMap.set(targetId, urlWebTexts);
 
   // ── 4. Vision analysis for every image ──
   await Promise.all(