[cli] Update download function to cache builds

packages/eas-shared/src/download.ts

@@ -124,11 +124,21 @@ async function maybeCacheAppAsync(appPath: string, cachedAppPath?: string): Prom
   return appPath;
 }
 
-export async function downloadAndMaybeExtractAppAsync(
-  url: string,
-  cachedAppPath?: string
-): Promise<string> {
-  const outputDir = path.join(getTmpDirectory(), uuidv4());
+function _downloadsCacheDirectory() {
+  const dir = path.join(getTmpDirectory(), 'downloads-cache');
+  fs.mkdirpSync(dir);
+  return dir;
+}
+
+export async function downloadAndMaybeExtractAppAsync(url: string): Promise<string> {
+  const name = encodeURIComponent(url.replace(/^[^:]+:\/\//, ''));
+
+  const outputDir = path.join(_downloadsCacheDirectory(), `${name}`);
+  if (await fs.pathExists(outputDir)) {
+    const appPath = await getAppPathAsync(outputDir, '(apk|app|ipa)');
+    return appPath;
+  }
+
   await fs.promises.mkdir(outputDir, { recursive: true });
 
   if (url.endsWith('apk')) {
@@ -139,7 +149,7 @@ export async function downloadAndMaybeExtractAppAsync(
       (ratio, total) => `Downloading app (${formatBytes(total * ratio)} / ${formatBytes(total)})`,
       'Successfully downloaded app'
     );
-    return maybeCacheAppAsync(apkFilePath, cachedAppPath);
+    return maybeCacheAppAsync(apkFilePath, outputDir);
   } else {
     const tmpArchivePathDir = path.join(getTmpDirectory(), uuidv4());
     await fs.mkdir(tmpArchivePathDir, { recursive: true });
@@ -157,7 +167,7 @@ export async function downloadAndMaybeExtractAppAsync(
 
     const appPath = await getAppPathAsync(outputDir, '(apk|app|ipa)');
 
-    return maybeCacheAppAsync(appPath, cachedAppPath);
+    return appPath;
   }
 }