diff --git a/src/config.ts b/src/config.ts
index e982af0..e0ae782 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -1,12 +1,6 @@
-interface ISettings {
-  [key: string]: any;
-  product?: 'assets_swtor_de_de' | 'assets_swtor_en_us' | 'assets_swtor_fr_fr' | 'assets_swtor_main' | 'assets_swtor_test_de_de' | 'assets_swtor_test_en_us' | 'assets_swtor_test_fr_fr' | 'assets_swtor_test_main' | 'eualas' | 'movies_de_de' | 'movies_en_us' | 'movies_fr_fr' | 'patcher2014' | 'patcher2017' | 'retailclient_betatest' | 'retailclient_cstraining' | 'retailclient_liveeptest' | 'retailclient_publictest' | 'retailclient_squadron157' | 'retailclient_swtor';
-  release?: number; //TODO: allow 'current', but how will we know what current version is?
-  from?: number;
-  outputType?: 'info' | 'file'; //whether to just show JSON information, or actually write files into a directory
-}
+import { ISettings, Product } from './interfaces/ISettings';
 
-const allowedProducts: Array<ISettings['product']> = ['assets_swtor_de_de', 'assets_swtor_en_us', 'assets_swtor_fr_fr', 'assets_swtor_main', 'assets_swtor_test_de_de', 'assets_swtor_test_en_us', 'assets_swtor_test_fr_fr', 'assets_swtor_test_main', 'eualas', 'movies_de_de', 'movies_en_us', 'movies_fr_fr', 'patcher2014', 'patcher2017', 'retailclient_betatest', 'retailclient_cstraining', 'retailclient_liveeptest', 'retailclient_publictest', 'retailclient_squadron157', 'retailclient_swtor'];
+const allowedProducts: Product[] = ['assets_swtor_de_de', 'assets_swtor_en_us', 'assets_swtor_fr_fr', 'assets_swtor_main', 'assets_swtor_test_de_de', 'assets_swtor_test_en_us', 'assets_swtor_test_fr_fr', 'assets_swtor_test_main', 'eualas', 'movies_de_de', 'movies_en_us', 'movies_fr_fr', 'patcher2014', 'patcher2017', 'retailclient_betatest', 'retailclient_cstraining', 'retailclient_liveeptest', 'retailclient_publictest', 'retailclient_squadron157', 'retailclient_swtor'];
 
 const settings: ISettings = {};
 
@@ -16,8 +10,8 @@ export const set = (key: string, value: any) => {
     case 'product':
       //TODO: need to verify input (one of allowed products)
       if (typeof value !== 'string') { throw new Error(`product must be a string but it's a "${typeof value}".`); }
-      if (!allowedProducts.includes(value as ISettings['product'])) { throw new Error(`"${value}" is not an allowed product.`); }
-      settings.product = value as ISettings['product'];
+      if (!allowedProducts.includes(value as Product)) { throw new Error(`"${value}" is not an allowed product.`); }
+      settings.product = value as Product;
       break;
     case 'release':
       //verify input (must be a number >=0, and >settings.from)
diff --git a/src/enums/releases.ts b/src/enums/releases.ts
deleted file mode 100644
index 16e545f..0000000
--- a/src/enums/releases.ts
+++ /dev/null
@@ -1,22 +0,0 @@
-export const enum Releases {
-  'assets_swtor_de_de',
-  'assets_swtor_en_us',
-  'assets_swtor_fr_fr',
-  'assets_swtor_main',
-  'assets_swtor_test_de_de',
-  'assets_swtor_test_en_us',
-  'assets_swtor_test_fr_fr',
-  'assets_swtor_test_main',
-  'eualas',
-  'movies_de_de',
-  'movies_en_us',
-  'movies_fr_fr',
-  'patcher2014',
-  'patcher2017',
-  'retailclient_betatest',
-  'retailclient_cstraining',
-  'retailclient_liveeptest',
-  'retailclient_publictest',
-  'retailclient_squadron157',
-  'retailclient_swtor',
-};
diff --git a/src/getFileContents.ts b/src/getFileContents.ts
index 39ef6c0..5b10f56 100644
--- a/src/getFileContents.ts
+++ b/src/getFileContents.ts
@@ -1,40 +1,39 @@
 import * as http from 'http';
+import { Product } from './interfaces/ISettings';
 
-export const getFileContents: (product?: string) => Promise<Buffer> = (product: string = 'assets_swtor_de_de') => new Promise((resolve, reject) => {
-  //Generate URL
-  const url = `http://cdn-patch.swtor.com/patch/${product}/${product}_-1to0.solidpkg`;
-  const path = `/patch/${product}/${product}_-1to0.solidpkg`;
-  const fileName = url.substr(url.lastIndexOf('/') + 1);
+export default function getFileContents(product: string = 'assets_swtor_de_de', from: number, to: number): Promise<Buffer> {
+  return new Promise((resolve, reject) => {
+    //Generate URL
+    const path = `/patch/${product}/${product}_${from}to${to}.solidpkg`;
 
-  const request = http.request({
-    family: 4,
-    host: 'cdn-patch.swtor.com',
-    path,
-  }, (response) => {
-    if (response.statusCode !== 200) {
-      return reject(`Expected status code 200 but received ${response.statusCode}`);
-    }
-    const headerLength = Number(response.headers['content-length']);
-
-    const chunkList: Buffer[] = [];
-    let totalLength = 0;
-    response.on('data', (chunk: Buffer) => {
-      chunkList.push(chunk);
-      totalLength += chunk.length;
-    });
-    response.on('end', () => {
-      if (totalLength !== headerLength) {
-        return reject(`Expected length ${headerLength} but received ${totalLength}`);
+    const request = http.request({
+      family: 4,
+      host: 'cdn-patch.swtor.com',
+      path,
+    }, (response) => {
+      if (response.statusCode !== 200) {
+        return reject(`Expected status code 200 but received ${response.statusCode}`);
       }
-      const fileContents = Buffer.concat(chunkList, totalLength);
-      resolve(fileContents);
+      const headerLength = Number(response.headers['content-length']);
+
+      const chunkList: Buffer[] = [];
+      let totalLength = 0;
+      response.on('data', (chunk: Buffer) => {
+        chunkList.push(chunk);
+        totalLength += chunk.length;
+      });
+      response.on('end', () => {
+        if (totalLength !== headerLength) {
+          return reject(`Expected length ${headerLength} but received ${totalLength}`);
+        }
+        const fileContents = Buffer.concat(chunkList, totalLength);
+        resolve(fileContents);
+      });
     });
-  });
 
-  request.on('error', (e) => {
-    reject(e);
+    request.on('error', (e) => {
+      reject(e);
+    });
+    request.end();
   });
-  request.end();
-});
-
-getFileContents();
+}
diff --git a/src/installPatch.ts b/src/installPatch.ts
new file mode 100644
index 0000000..6304fb3
--- /dev/null
+++ b/src/installPatch.ts
@@ -0,0 +1,6 @@
+import getFileContents from './getFileContents';
+
+(async () => {
+  const buffer = await getFileContents('assets_swtor_de_de', -1, 0);
+  console.log(buffer.length, buffer);
+})();
diff --git a/src/interfaces/ISettings.ts b/src/interfaces/ISettings.ts
new file mode 100644
index 0000000..b77750b
--- /dev/null
+++ b/src/interfaces/ISettings.ts
@@ -0,0 +1,11 @@
+type Product = 'assets_swtor_de_de' | 'assets_swtor_en_us' | 'assets_swtor_fr_fr' | 'assets_swtor_main' | 'assets_swtor_test_de_de' | 'assets_swtor_test_en_us' | 'assets_swtor_test_fr_fr' | 'assets_swtor_test_main' | 'eualas' | 'movies_de_de' | 'movies_en_us' | 'movies_fr_fr' | 'patcher2014' | 'patcher2017' | 'retailclient_betatest' | 'retailclient_cstraining' | 'retailclient_liveeptest' | 'retailclient_publictest' | 'retailclient_squadron157' | 'retailclient_swtor';
+
+interface ISettings {
+  [key: string]: any;
+  product?: Product;
+  release?: number; //TODO: allow 'current', but how will we know what current version is?
+  from?: number;
+  outputType?: 'info' | 'file'; //whether to just show JSON information, or actually write files into a directory
+}
+
+export { ISettings, Product };