feat(api): deployment through zipped/compressed file

api/src/utils/zipped.ts

@@ -0,0 +1,39 @@
+import path from 'path'
+import unZipper from 'unzipper'
+import { extractName } from './extractName'
+import { createReadStream } from './file'
+
+export const isZipFile = (
+  file: Express.Multer.File
+): { error?: string; value?: Express.Multer.File } => {
+  const fileExtension = path.extname(file.originalname)
+  if (fileExtension.toUpperCase() !== '.ZIP')
+    return { error: `"file" has invalid extension ${fileExtension}` }
+
+  const allowedMimetypes = ['application/zip', 'application/x-zip-compressed']
+
+  if (!allowedMimetypes.includes(file.mimetype))
+    return { error: `"file" has invalid type ${file.mimetype}` }
+
+  return { value: file }
+}
+
+export const extractJSONFromZip = async (zipFile: Express.Multer.File) => {
+  let fileContent: string = ''
+
+  const fileInZip = extractName(zipFile.originalname)
+  const zip = (await createReadStream(zipFile.path)).pipe(
+    unZipper.Parse({ forceStream: true })
+  )
+
+  for await (const entry of zip) {
+    const fileName = entry.path as string
+    if (fileName.toUpperCase().endsWith('.JSON') && fileName === fileInZip) {
+      fileContent = await entry.buffer()
+    } else {
+      entry.autodrain()
+    }
+  }
+
+  return fileContent
+}