refactor: organize codes

src/electron/ipcMain.js

@@ -0,0 +1,19 @@
+import { app, ipcMain } from "electron";
+
+export function initIpcMain(win) {
+  // Make vuex copy for electron.
+  global.vuexCopy = null;
+  // 同步 vuex 状态，由于 player 有循环引用问题，拷贝部分属性
+  ipcMain.on("vuex-state", (e, state) => {
+    global.vuexCopy = state;
+  });
+
+  ipcMain.on("close", () => {
+    win.close();
+    app.quit();
+  });
+
+  ipcMain.on("minimize", () => {
+    win.minimize();
+  });
+}