Made sure uploads respect storage limits

app/imports/api/files/assertUserHasFileSpace.ts

@@ -0,0 +1,23 @@
+import { getUserTier } from '/imports/api/users/patreon/tiers';
+import prettyBytes from 'pretty-bytes';
+
+export default function assertUserHasFileSpace(userId: string | null, spaceRequiredInBytes: number) {
+  // Get the user
+  if (!userId) throw new Meteor.Error('permission-denied', 'No user was provided');
+  const user = Meteor.users.findOne(userId, { fields: { fileStorageUsed: 1 } });
+  if (!user) throw new Meteor.Error('permission-denied', 'User not found');
+
+  // Work out how much space they have and need
+  const fileStorageUsed = user.fileStorageUsed || 0;
+  const fileStorageAllowed = getUserTier(Meteor.userId()).fileStorage * 1000000;
+  let fileStorageLeft = fileStorageAllowed - fileStorageUsed;
+  if (fileStorageLeft < 0) fileStorageLeft = 0;
+
+  // Throw an error if they don't have space
+  if (fileStorageLeft < spaceRequiredInBytes) {
+    throw new Meteor.Error('insufficient-space',
+      `Not enough storage space left, you need ${prettyBytes(spaceRequiredInBytes)}, ` +
+      `but only have ${prettyBytes(fileStorageLeft)} available`
+    );
+  }
+}