fix: dark theme state for echarts

neetbox/frontend/src/components/dashboard/project/hardware/cpugraph.tsx

@@ -10,6 +10,7 @@ export const CPUGraph = ({
   const cpus = hardwareData[0].value.cpus;
   const initialOption = () => {
     return {
+      backgroundColor: 'transparent',
       animation: false,
       tooltip: {
         trigger: "axis",

neetbox/frontend/src/components/echarts.tsx

@@ -1,6 +1,7 @@
 import { useRef, useEffect, HTMLAttributes, useState } from "react";
 import type * as echarts from "echarts";
 import Loading from "./loading";
+import { useTheme } from "./themeSwitcher";
 
 export interface EChartsProps {
   initialOption: () => echarts.EChartsOption;
@@ -14,14 +15,18 @@ export const ECharts = (props: EChartsProps) => {
   const [echartsModule, setEchartsModule] = useState<typeof echarts | null>(
     null,
   );
+  const { darkMode } = useTheme();
 
   useEffect(() => {
     import("echarts").then((mod) => setEchartsModule(mod));
   });
 
   useEffect(() => {
     if (echartsModule) {
-      const chart = echartsModule.init(chartContainerRef.current);
+      const chart = echartsModule.init(
+        chartContainerRef.current,
+        darkMode ? "dark" : null,
+      );
 
       chart.setOption(props.initialOption());
       chartRef.current = chart;
@@ -37,7 +42,7 @@ export const ECharts = (props: EChartsProps) => {
       };
     }
     // eslint-disable-next-line react-hooks/exhaustive-deps
-  }, [echartsModule]);
+  }, [echartsModule, darkMode]);
 
   useEffect(() => {
     if (chartRef.current) {

neetbox/frontend/src/components/themeSwitcher.tsx

@@ -1,16 +1,53 @@
-import React from "react";
+import React, {
+  createContext,
+  useCallback,
+  useContext,
+  useEffect,
+  useState,
+} from "react";
 import { Button } from "@douyinfe/semi-ui";
 
+const Context = createContext<{
+  darkMode: boolean;
+  setDarkMode: (val: boolean) => void;
+}>(null!);
 
-export default function SwitchColorMode(): React.JSX.Element {
-  const switchMode = () => {
+export function useTheme() {
+  return useContext(Context);
+}
+
+export function ThemeContextProvider(props: React.PropsWithChildren) {
+  const [darkMode, setDarkModeState] = useState(false);
+
+  const setDarkMode = useCallback((val) => {
+    setDarkModeState(val);
+    localStorage.setItem("neetbox-theme", val ? "dark" : "");
+  }, []);
+
+  useEffect(() => {
+    setDarkModeState(localStorage.getItem("neetbox-theme") === "dark");
+  }, []);
+
+  useEffect(() => {
     const body = document.body;
-    if (body.hasAttribute("theme-mode")) {
-      body.removeAttribute("theme-mode");
-    } else {
+    if (darkMode) {
       body.setAttribute("theme-mode", "dark");
+    } else {
+      body.removeAttribute("theme-mode");
     }
-  };
+  }, [darkMode]);
+
+  return (
+    <Context.Provider value={{ darkMode, setDarkMode }}>
+      {props.children}
+    </Context.Provider>
+  );
+}
 
+export default function SwitchColorMode(): React.JSX.Element {
+  const { darkMode, setDarkMode } = useTheme();
+  const switchMode = () => {
+    setDarkMode(!darkMode);
+  };
   return <Button onClick={switchMode}>Switch Mode</Button>;
 }

neetbox/frontend/src/main.tsx

@@ -6,6 +6,7 @@ import LoginPage from "./pages/login";
 import "./index.css";
 import Console, { consoleRoutes } from "./pages/console";
 import { startBackgroundTasks } from "./services/projects";
+import { ThemeContextProvider } from "./components/themeSwitcher";
 
 const router = createBrowserRouter([
   {
@@ -36,8 +37,10 @@ function ServiceProvider({ children }: PropsWithChildren) {
 
 ReactDOM.createRoot(document.getElementById("root")!).render(
   <React.StrictMode>
-    <ServiceProvider>
-      <RouterProvider router={router} />
-    </ServiceProvider>
-  </React.StrictMode>
+    <ThemeContextProvider>
+      <ServiceProvider>
+        <RouterProvider router={router} />
+      </ServiceProvider>
+    </ThemeContextProvider>
+  </React.StrictMode>,
 );