feat: add file upload

src/modules/files/files.services.ts

@@ -0,0 +1,29 @@
+import { UploadClient } from '@uploadcare/upload-client'
+import cuid from 'cuid'
+
+import { env } from 'constants/env'
+import { ExceptionError } from 'utils/error'
+
+export class FilesService {
+  async uploadFile(buffer?: Buffer, originalname?: string) {
+    const client = new UploadClient({ publicKey: env.UPLOADCARE_PUBLIC_KEY })
+
+    if (!buffer || !originalname) {
+      throw new ExceptionError('No file provided')
+    }
+
+    if (!originalname.toLowerCase().match(/\.(jpg|jpeg|png)$/)) {
+      throw new ExceptionError('Invalid file type')
+    }
+
+    const response = await client.uploadFile(buffer, {
+      fileName: `${cuid()}-${originalname}`
+    })
+
+    if (!response) {
+      throw new ExceptionError('No file uploaded')
+    }
+
+    return { file: response.cdnUrl }
+  }
+}