feat: add some shit

lib/cache/image.ts

@@ -1,5 +1,6 @@
 import { hash } from "@lib/hash.ts";
 import * as cache from "@lib/cache/cache.ts";
+import { ImageMagick } from "https://deno.land/x/imagemagick_deno@0.0.25/mod.ts";
 
 type ImageCacheOptions = {
   url: string;
@@ -19,6 +20,20 @@ function getCacheKey({ url: _url, width, height }: ImageCacheOptions) {
     );
 }
 
+function verifyImage(
+  imageBuffer: Uint8Array,
+) {
+  return new Promise<boolean>((resolve) => {
+    try {
+      ImageMagick.read(imageBuffer, (image) => {
+        resolve(image.height !== 0 && image.width !== 0);
+      });
+    } catch (_err) {
+      resolve(false);
+    }
+  });
+}
+
 export async function getImage({ url, width, height }: ImageCacheOptions) {
   const cacheKey = getCacheKey({ url, width, height });
 
@@ -44,6 +59,12 @@ export async function setImage(
 ) {
   const clone = new Uint8Array(buffer);
 
+  const imageCorrect = await verifyImage(clone);
+  if (!imageCorrect) {
+    console.log("[cache/image] failed to store image", { url });
+    return;
+  }
+
   const cacheKey = getCacheKey({ url, width, height });
   const pointerId = await hash(cacheKey);