♻️ Extract solidpkg from general file download

src/getSolidpkg.ts

@@ -0,0 +1,22 @@
+import getUrlContents from './getUrlContents';
+import { Product } from './interfaces/ISettings';
+import verifyProductName from './verifyProductName';
+
+export default function getSolidpkg(product: Product, from: number, to: number): Promise<Buffer> {
+  //Verify function arguments
+  if (!verifyProductName(product)) {
+    throw new Error(`"${product}" is not a valid product.`);
+  }
+
+  if (typeof from !== 'number' || (from | 0) !== from || from < -1) {
+    throw new Error(`from must be an integer at least -1 but it is "${from}"`);
+  }
+  if (typeof to !== 'number' || (to | 0) !== to || to < 0) {
+    throw new Error(`to must be an integer at least 0 but it is "${to}"`);
+  }
+  if (from >= to) {
+    throw new Error(`from must be smaller than to but "${from}" is not smaller than "${to}".`);
+  }
+
+  return getUrlContents({ host: 'cdn-patch.swtor.com', path: `/patch/${product}/${product}_${from}to${to}.solidpkg` });
+}

src/getUrlContents.ts

@@ -1,20 +1,10 @@
 import * as http from 'http';
-import { Product } from './interfaces/ISettings';
-import verifyProductName from './verifyProductName';
 
-export default function getFileContents(product: Product, from: number, to: number): Promise<Buffer> {
+export default function getUrlContents({ host, path }: {host: string, path: string}): Promise<Buffer> {
   return new Promise((resolve, reject) => {
-    if (!verifyProductName(product)) {
-      return reject(`"${product}" is not a valid product.`);
-    }
-    //TODO: also verify from and to
-
-    //Generate URL
-    const path = `/patch/${product}/${product}_${from}to${to}.solidpkg`;
-
     const request = http.request({
       family: 4,
-      host: 'cdn-patch.swtor.com',
+      host,
       path,
     }, (response) => {
       if (response.statusCode !== 200) {

src/installPatch.ts

@@ -1,6 +1,6 @@
-import getFileContents from './getFileContents';
+import getSolidpkg from './getSolidpkg';
 
 (async () => {
-  const buffer = await getFileContents('assets_swtor_de_de', -1, 0);
+  const buffer = await getSolidpkg('assets_swtor_de_de', -1, 0);
   console.log(buffer.length, buffer);
 })();