Add S3 storage configuration and client

server/utils/backend-config.ts

@@ -10,7 +10,11 @@ export function getBackendRuntimeConfig(event?: H3Event) {
 
 	return {
 		mongodbUri: config.mongodbUri || process.env.MONGODB_URI || "",
-		uploadDir: config.uploadDir || process.env.UPLOAD_DIR || "",
 		tokenExpire: config.tokenExpire || process.env.TOKEN_EXPIRE || "1h",
+		s3Endpoint: config.s3Endpoint || process.env.S3_ENDPOINT || "",
+		s3Bucket: config.s3Bucket || process.env.S3_BUCKET || "",
+		s3Region: config.s3Region || process.env.S3_REGION || "us-east-1",
+		s3AccessKeyId: config.s3AccessKeyId || process.env.S3_ACCESS_KEY_ID || "",
+		s3SecretAccessKey: config.s3SecretAccessKey || process.env.S3_SECRET_ACCESS_KEY || "",
 	}
 }