WIP: feature: add windows support

bin/win/first-run.bat

@@ -0,0 +1,20 @@
+@echo off
+
+IF NOT EXIST %AppData%\Zcash (
+    mkdir %AppData%\Zcash
+)
+
+IF NOT EXIST %AppData%\ZcashParams (
+    mkdir %AppData%\ZcashParams
+)
+
+IF NOT EXIST %AppData%\Zcash\zcash.conf (
+   (
+    echo addnode=mainnet.z.cash 
+    echo rpcuser=username 
+    echo rpcpassword=password%random%%random%
+    echo daemon=1 
+    echo showmetrics=0 
+    echo gen=0 
+) > %AppData%\Zcash\zcash.conf
+) 

config/daemon/fetch-unix-params.js

@@ -0,0 +1,24 @@
+// @flow
+
+import path from 'path';
+import cp from 'child_process';
+
+import getBinariesPath from './get-binaries-path';
+import log from './logger';
+
+export default (): Promise<*> => new Promise((resolve, reject) => {
+  const processName = path.join(getBinariesPath(), 'zcash-fetch-params');
+
+  const childProcess = cp.spawn(processName);
+
+  childProcess.stdout.on('data', data => log(data.toString()));
+  childProcess.stderr.on('data', data => log(data.toString()));
+  childProcess.on('error', reject);
+  childProcess.on('exit', (code, err) => {
+    if (code !== 0 || err) {
+      reject(new Error(err));
+    }
+
+    resolve();
+  });
+});

config/daemon/fetch-windows-params.js

@@ -0,0 +1,43 @@
+// @flow
+import fs from 'fs';
+import path from 'path';
+import cp from 'child_process';
+
+import got from 'got';
+
+// eslint-disable-next-line
+import { app } from '../electron';
+import getBinariesPath from './get-binaries-path';
+import log from './logger';
+
+const httpClient = got.extend({ baseUrl: 'https://z.cash/downloads/', retry: 3, useElectronNet: true });
+
+const FILES = [
+  'sprout-proving.key',
+  'sprout-verifying.key',
+  'sapling-spend.params',
+  'sapling-output.params',
+  'sprout-groth16.params',
+];
+
+export default (): Promise<*> => new Promise((resolve, reject) => {
+  const firstRunProcess = cp.spawn(path.join(getBinariesPath(), 'win', 'first-run.bat'));
+  firstRunProcess.stdout.on('data', data => log(data.toString()));
+  firstRunProcess.stderr.on('data', data => reject(data.toString()));
+  firstRunProcess.on('exit', (code, err) => {
+    if (code !== 0 || err) {
+      reject(new Error(err));
+    }
+
+    FILES.forEach((filename) => {
+      // TODO: Log download progress
+
+      log(`Downloading ${filename}...`);
+
+      httpClient
+        .stream(filename)
+        .on('end', () => log(`Download ${filename} finished!`))
+        .pipe(fs.createWriteStream(`${path.join(app.getPath('userData'), '..', 'ZcashParams', filename)}`));
+    });
+  });
+});

config/daemon/run-fetch-params.js

@@ -1,23 +1,16 @@
 // @flow
-import cp from 'child_process';
-import path from 'path';
+import os from 'os';
 
-import getBinariesPath from './get-binaries-path';
 import log from './logger';
+import fetchWindowsParams from './fetch-windows-params';
+import runUnixFetchParams from './fetch-unix-params';
 
-export default (): Promise<*> => new Promise((resolve, reject) => {
+export default (): Promise<*> => {
   log('Fetching params');
-  const processName = path.join(getBinariesPath(), 'zcash-fetch-params');
 
-  const childProcess = cp.spawn(processName);
+  if (os.platform() === 'win32') {
+    return fetchWindowsParams();
+  }
 
-  childProcess.stdout.on('data', data => log(data.toString()));
-  childProcess.stderr.on('data', data => log(data.toString()));
-  childProcess.on('error', reject);
-  childProcess.on('exit', (code, err) => {
-    if (code !== 0 || err) {
-      reject(new Error(err));
-    }
-    resolve();
-  });
-});
+  return runUnixFetchParams();
+};