Add file attachments

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

@@ -0,0 +1,65 @@
+const fs = require('fs');
+const path = require('path');
+const util = require('util');
+const stream = require('stream');
+const streamToArray = require('stream-to-array');
+const { v4: uuid } = require('uuid');
+const sharp = require('sharp');
+
+const writeFile = util.promisify(fs.writeFile);
+
+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 buffer = await streamToArray(file).then((parts) =>
+        Buffer.concat(parts.map((part) => (util.isBuffer(part) ? part : Buffer.from(part)))),
+      );
+
+      let thumbnailBuffer;
+
+      try {
+        thumbnailBuffer = await sharp(buffer).resize(240, 240).jpeg().toBuffer();
+      } catch (error) {} // eslint-disable-line no-empty
+
+      try {
+        const dirname = uuid();
+        const dirPath = path.join(sails.config.custom.attachmentsPath, dirname);
+
+        fs.mkdirSync(dirPath);
+
+        if (thumbnailBuffer) {
+          await writeFile(path.join(dirPath, '240.jpg'), thumbnailBuffer);
+        }
+
+        await writeFile(path.join(dirPath, file.filename), buffer);
+
+        // eslint-disable-next-line no-param-reassign
+        file.extra = {
+          dirname,
+          isImage: !!thumbnailBuffer,
+        };
+
+        return done();
+      } catch (error) {
+        return done(error);
+      }
+    };
+
+    return exits.success(receiver);
+  },
+};