From 6ca4e794cdbc5b4884cd2c05b9a56f1c4e139cd1 Mon Sep 17 00:00:00 2001
From: Jia Hao <jiahaog@gmail.com>
Date: Tue, 23 Feb 2016 16:46:14 +0800
Subject: [PATCH] Implement rudimentary inferment of flash

---
 app/src/helpers/helpers.js    | 10 +++++
 app/src/helpers/inferFlash.js | 72 +++++++++++++++++++++++++++++++++++
 app/src/main.js               |  8 ++++
 3 files changed, 90 insertions(+)
 create mode 100644 app/src/helpers/inferFlash.js

diff --git a/app/src/helpers/helpers.js b/app/src/helpers/helpers.js
index ed8327f..3683679 100644
--- a/app/src/helpers/helpers.js
+++ b/app/src/helpers/helpers.js
@@ -5,6 +5,14 @@ function isOSX() {
     return os.platform() === 'darwin';
 }
 
+function isLinux() {
+    return os.platform() === 'linux';
+}
+
+function isWindows() {
+    return os.platform() === 'win32';
+}
+
 function linkIsInternal(currentUrl, newUrl) {
     var currentDomain = wurl('domain', currentUrl);
     var newDomain = wurl('domain', newUrl);
@@ -13,5 +21,7 @@ function linkIsInternal(currentUrl, newUrl) {
 
 export default {
     isOSX,
+    isLinux,
+    isWindows,
     linkIsInternal
 };
diff --git a/app/src/helpers/inferFlash.js b/app/src/helpers/inferFlash.js
new file mode 100644
index 0000000..9cda7b9
--- /dev/null
+++ b/app/src/helpers/inferFlash.js
@@ -0,0 +1,72 @@
+import fs from 'fs';
+import path from 'path';
+import helpers from './helpers';
+
+const {isOSX, isWindows, isLinux} = helpers;
+
+function inferFlash() {
+    if (isOSX()) {
+        return darwinMatch();
+    }
+
+    if (isWindows()) {
+        return windowsMatch();
+    }
+
+    if (isLinux()) {
+        return linuxMatch();
+    }
+
+    console.warn('Unable to determine OS to infer flash player');
+}
+
+/**
+ * Synchronously find a file or directory
+ * @param {RegExp} pattern regex
+ * @param {string} base path
+ * @param {boolean} [findDir] if true, search results will be limited to only directories
+ * @returns {Array}
+ */
+function findSync(pattern, base, findDir) {
+    const matches = [];
+    (function findSyncRecurse(base) {
+        const children = fs.readdirSync(base);
+        children.forEach(child => {
+            const childPath = path.join(base, child);
+            const childIsDirectory = fs.lstatSync(childPath).isDirectory();
+            const patternMatches = pattern.test(childPath);
+
+            if (!patternMatches) {
+                if (!childIsDirectory) {
+                    return;
+                }
+                findSyncRecurse(childPath);
+                return;
+            }
+
+            if (!findDir) {
+                matches.push(childPath);
+                return;
+            }
+
+            if (childIsDirectory) {
+                matches.push(childPath);
+            }
+        });
+    })(base);
+    return matches;
+}
+
+function linuxMatch() {
+    return findSync(/libpepflashplayer\.so/, '/opt/google/chrome')[0];
+}
+
+function windowsMatch() {
+    return findSync(/pepflashplayer\.dll/, 'C:\Program Files (x86)\Google\Chrome')[0];
+}
+
+function darwinMatch() {
+    return findSync(/PepperFlashPlayer.plugin/, '/Applications/Google Chrome.app/', true)[0];
+}
+
+export default inferFlash;
diff --git a/app/src/main.js b/app/src/main.js
index 5355f97..c78e2c3 100644
--- a/app/src/main.js
+++ b/app/src/main.js
@@ -5,6 +5,7 @@ import electron from 'electron';
 import createLoginWindow from './components/login/loginWindow';
 import createMainWindow from './components/mainWindow/mainWindow';
 import helpers from './helpers/helpers';
+import inferFlash from './helpers/inferFlash';
 
 const {app, ipcMain} = electron;
 const {isOSX} = helpers;
@@ -14,6 +15,13 @@ const appArgs = JSON.parse(fs.readFileSync(APP_ARGS_FILE_PATH, 'utf8'));
 
 let mainWindow;
 
+if (appArgs.flashPluginDir) {
+    app.commandLine.appendSwitch('ppapi-flash-path', appArgs.flashPluginDir);
+} else {
+    const flashPath = inferFlash();
+    app.commandLine.appendSwitch('ppapi-flash-path', flashPath);
+}
+
 if (appArgs.insecure) {
     app.commandLine.appendSwitch('ignore-certificate-errors');
 }