add inject script

package.json

@@ -86,6 +86,7 @@
     "build_release": "npm run release --prefix client && npm run build --prefix core && npm run release --prefix csseditor",
     "package_release": "node scripts/package-release.js",
     "release": "npm run lint && npm run build_release && gulp release && npm run package_release",
-    "update_release": "npm run build_release && gulp build-release"
+    "update_release": "npm run build_release && gulp build-release",
+	"inject": "node scripts/inject.js"
   }
 }

scripts/inject.js

@@ -0,0 +1,56 @@
+const args = process.argv;
+const fs = require('fs');
+const path = require('path');
+
+const releaseInput = args[2] ? args[2].toLowerCase() : '';
+const release = releaseInput == 'canary' ? 'DiscordCanary' : releaseInput == 'ptb' ? 'DiscordPTB' : 'Discord';
+console.log(`Injecting into version ${release}`);
+const discordPath = (function() {
+    if (process.platform === 'win32') {
+        const basedir = path.join(process.env.LOCALAPPDATA, release);
+        if (!fs.existsSync(basedir)) throw new Error(`Cannot find directory for ${release}`);
+        const version = fs.readdirSync(basedir).filter(f => fs.lstatSync(path.join(basedir, f)).isDirectory() && f.split('.').length > 1).sort().reverse()[0];
+        const dir = path.join(basedir, version, 'resources');
+        if (!version || !fs.existsSync(dir)) throw new Error(`Cannot find directory for ${release}`);
+        return dir;
+    }
+    else if (process.platform == 'darwin') {
+        const dir = path.join('Applications', `${release}.app`, 'Contents', 'Resources');
+        if (!fs.existsSync(dir)) throw new Error(`Cannot find directory for ${release}`);
+        return dir;
+    }
+    const dir = path.join('usr', 'share', release.toLowerCase(), 'resources');
+    if (!fs.existsSync(dir)) throw new Error(`Cannot find directory for ${release}`);
+    return dir;
+})();
+console.log(`Found ${release} in ${discordPath}`);
+
+const appPath = path.join(discordPath, 'app');
+const packageJson = path.join(appPath, 'package.json');
+const indexJs = path.join(appPath, 'index.js');
+
+if (!fs.existsSync(appPath)) fs.mkdirSync(appPath);
+if (fs.existsSync(packageJson)) fs.unlinkSync(packageJson);
+if (fs.existsSync(indexJs)) fs.unlinkSync(indexJs);
+
+console.log(`Writing package.json`);
+fs.writeFileSync(packageJson, JSON.stringify({
+    name: 'betterdiscord',
+    description: 'BetterDiscord',
+    main: 'index.js',
+    private: true,
+    dependencies: {}
+}, null, 4));
+
+console.log(`Writing index.js`);
+fs.writeFileSync(indexJs, `const path = require('path');
+const fs = require('fs');
+const Module = require('module');
+const electron = require('electron');
+const basePath = path.join(__dirname, '..', 'app.asar');
+const pkg = require(path.join(basePath, 'package.json'));
+electron.app.getAppPath = () => basePath;
+Module._load(path.join(basePath, pkg.main), null, true);
+electron.app.on('ready', () => {new (require('${path.join(__dirname, '..', 'core').replace(/\\/g, '/')}').BetterDiscord)();});`);
+
+console.log(`Injection successful, please restart ${release}.`);