Add file attachments

server/api/helpers/create-avatar-receiver.js

@@ -0,0 +1,54 @@
+const fs = require('fs');
+const path = require('path');
+const util = require('util');
+const stream = require('stream');
+const { v4: uuid } = require('uuid');
+const sharp = require('sharp');
+
+const pipeline = util.promisify(stream.pipeline);
+
+module.exports = {
+  sync: true,
+
+  fn(inputs, exits) {
+    const receiver = stream.Writable({
+      objectMode: true,
+    });
+
+    let firstFileHandled = false;
+    // eslint-disable-next-line no-underscore-dangle
+    receiver._write = async (file, receiverEncoding, done) => {
+      if (firstFileHandled) {
+        file.pipe(new stream.Writable());
+
+        return done();
+      }
+      firstFileHandled = true;
+
+      const resize = sharp().resize(100, 100).jpeg();
+      const passThrought = new stream.PassThrough();
+
+      try {
+        await pipeline(file, resize, passThrought);
+
+        const dirname = uuid();
+        const dirPath = path.join(sails.config.custom.userAvatarsPath, dirname);
+
+        fs.mkdirSync(dirPath);
+
+        await pipeline(passThrought, fs.createWriteStream(path.join(dirPath, '100.jpg')));
+
+        // eslint-disable-next-line no-param-reassign
+        file.extra = {
+          dirname,
+        };
+
+        return done();
+      } catch (error) {
+        return done(error);
+      }
+    };
+
+    return exits.success(receiver);
+  },
+};