From 2ec5009e6ac07f8f1e4b007dc690776369dff4bb Mon Sep 17 00:00:00 2001
From: Oj <oj@oojmed.com>
Date: Tue, 21 Dec 2021 10:38:18 +0000
Subject: [PATCH] [CmdSwitches] Initial Add

---
 src/cmdSwitches.js | 51 ++++++++++++++++++++++++++++++++++++++++++++++
 src/index.js       |  2 ++
 2 files changed, 53 insertions(+)
 create mode 100644 src/cmdSwitches.js

diff --git a/src/cmdSwitches.js b/src/cmdSwitches.js
new file mode 100644
index 0000000..d5f139c
--- /dev/null
+++ b/src/cmdSwitches.js
@@ -0,0 +1,51 @@
+const { app } = require('electron');
+
+const presets = {
+  'perf': `--enable-gpu-rasterization --enable-zero-copy --ignore-gpu-blocklist --enable-hardware-overlays=single-fullscreen,single-on-top,underlay --enable-features=BackForwardCache:TimeToLiveInBackForwardCacheInSeconds/300/should_ignore_blocklists/true/enable_same_site/true,ThrottleDisplayNoneAndVisibilityHiddenCrossOriginIframes,UseSkiaRenderer,WebAssemblyLazyCompilation --disable-features=Vulkan`, // Performance
+  'perf-ex': '--enable-quic --enable-features=EnableDrDc,CanvasOopRasterization', // Performance experimental (not known / tested benefit)
+  'disablemediakeys': '--disable-features=HardwareMediaKeyHandling', // Disables media keys (common want)
+  'battery': '--enable-features=TurnOffStreamingMediaCachingAlways' // Known to have better battery life for Chromium
+};
+
+module.exports = () => {
+  const preset = oaConfig.cmdPreset || 'perf,perf-ex,battery'; // Default to most (should default to none?)
+  let cmdSwitches = presets[preset] || ''; // Default to blank (no switches)
+
+  log('CmdSwitches', 'Preset:', preset);
+
+  if (preset.includes(',')) {
+    let total = {};
+    for (const pre of preset.split(',')) {
+      for (const cmd of presets[pre].split(' ')) {
+        const [ key, value ] = cmd.split('=');
+
+        if (total[key]) {
+          if (value) {
+            total[key] += ',' + value; // Concat value with , for flags like --enable-features
+          } // Else no value, ignore as it already exists
+        } else {
+          total[key] = value;
+        }
+      }
+    }
+
+    console.log(total);
+
+    cmdSwitches = Object.keys(total).reduce((acc, x) => acc += (x + (total[x] ? ('=' + total[x]) : '') + ' '), '');
+  }
+
+  if (cmdSwitches) {
+    cmdSwitches = `--flag-switches-begin ` + cmdSwitches + ` --flag-switches-end`; // Probably unneeded for Chromium / Electron manual flags but add anyway
+
+    log('CmdSwitches', 'Switches:', cmdSwitches);
+
+    const switches = cmdSwitches.split(' ');
+
+    for (const cmd of switches) {
+      const [ key, value ] = cmd.split('=');
+
+      app.commandLine.appendSwitch(key, value);
+      log('CmdSwitches', 'Appended switch', key, value);
+    }
+  }
+}
\ No newline at end of file
diff --git a/src/index.js b/src/index.js
index e13785b..f0dba9b 100644
--- a/src/index.js
+++ b/src/index.js
@@ -9,6 +9,8 @@ global.oaConfig = appSettings.getSettings().get('openasar', {});
 
 log('Init', 'Loaded config', oaConfig);
 
+require('./cmdSwitches')();
+
 const appMode = process.argv?.includes('--overlay-host') ? 'overlay-host' : 'app';
 
 if (appMode === 'overlay-host') {