Refactor uploads

lib/resize.js

@@ -1,33 +1,71 @@
+import fs from 'mz/fs';
+import lwip from 'lwip';
 import debugname from 'debug';
 const debug = debugname('hostr-api:resize');
-import lwip from 'lwip';
-import imageType from 'image-type';
-
-const supported = ['jpg', 'png', 'gif'];
-
-export default function(input, size) {
-  debug('Resizing');
-
-  const type = imageType(input);
-
-  if (!type.ext || supported.indexOf(type.ext) < 0) {
-    throw new Error('Not a supported image.');
-  }
 
+function cover(path, type, size) {
   return new Promise((resolve, reject) => {
-    lwip.open(input, type.ext, (errIn, image) => {
+    lwip.open(path, type, (errIn, image) => {
+      debug('Image Opened');
       if (errIn) {
-        return reject(errIn);
+        reject(errIn);
       }
+
       image.cover(size.width, size.height, (errOut, resized) => {
+        debug('Image Resized');
         if (errOut) {
-          return reject(errOut);
+          reject(errOut);
         }
 
-        resized.toBuffer(type.ext, (errBuf, buffer) => {
+        resized.toBuffer(type, (errBuf, buffer) => {
+          debug('Image Buffered');
+          if (errBuf) {
+            reject(errBuf);
+          }
           resolve(buffer);
         });
       });
     });
   });
 }
+
+function scale(path, type, size) {
+  return new Promise((resolve, reject) => {
+    lwip.open(path, type, (errIn, image) => {
+      debug('Image Opened');
+      if (errIn) {
+        reject(errIn);
+      }
+
+      image.cover(size.width, size.height, (errOut, resized) => {
+        debug('Image Resized');
+        if (errOut) {
+          reject(errOut);
+        }
+
+        resized.toBuffer(type, (errBuf, buffer) => {
+          debug('Image Buffered');
+          if (errBuf) {
+            reject(errBuf);
+          }
+          resolve(buffer);
+        });
+      });
+    });
+  });
+}
+
+export default function resize(path, type, currentSize, newSize) {
+  debug('Resizing');
+  const ratio = 970 / currentSize.width;
+  if (newSize.width <= 150) {
+    debug('Cover');
+    return cover(path, type, newSize);
+  } else if (newSize.width > 970 && ratio > 1) {
+    debug('Scale');
+    newSize.height = currentSize.height * ratio;
+    return scale(path, type, newSize);
+  }
+  debug('Copy');
+  return fs.readFile(path);
+}