Merge pull request #1 from waku-org/weboko/fe

feat: RLN interaction front-end
2026-01-02 13:53:13 +00:00 · 2023-11-01 10:53:13 +01:00 · 2023-11-01 10:53:13 +01:00 · 26632559f3
commit 26632559f3
parent 9544cc1502 02bc3893b6
40 changed files with 13285 additions and 0 deletions
--- a/.eslintrc.json
+++ b/.eslintrc.json
@ -0,0 +1,3 @@
+{
+  "extends": "next/core-web-vitals"
+}
--- a/.gitignore
+++ b/.gitignore
@ -0,0 +1,35 @@
+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+/.pnp
+.pnp.js
+
+# testing
+/coverage
+
+# next.js
+/.next/
+/out/
+
+# production
+/build
+
+# misc
+.DS_Store
+*.pem
+
+# debug
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# local env files
+.env*.local
+
+# vercel
+.vercel
+
+# typescript
+*.tsbuildinfo
+next-env.d.ts
--- a/8
+++ b/8
@ -0,0 +1,8 @@
+FROM node:18
+WORKDIR /app
+COPY package*.json ./  
+RUN npm ci
+COPY . .  
+RUN npm run build  
+EXPOSE 3000
+CMD ["npm", "run", "serve"]
--- a/README.md
+++ b/README.md
@ -1,2 +1,32 @@
 # waku-frontend
 Waku's frontend. Interact with your waku node via this simple user interface
+
+## Getting Started
+
+First, run the development server:
+
+```bash
+npm run dev
+# or
+yarn dev
+# or
+pnpm dev
+# or
+bun dev
+```
+
+Open [http://localhost:3000](http://localhost:3000) with your browser to see the result.
+
+## To run independently
+
+```bash
+npm run build
+npm run serve
+```
+
+## To run in docker
+
+```bash
+docker build -t waku_frontend .
+docker run -d -p 3000:3000 -p waku_frontend
+```
--- a/next.config.js
+++ b/next.config.js
@ -0,0 +1,13 @@
+/** @type {import('next').NextConfig} */
+const nextConfig = {
+  output: "export",
+  webpack: (config) => {
+    config.externals.push({
+      "utf-8-validate": "commonjs utf-8-validate",
+      bufferutil: "commonjs bufferutil",
+    });
+    return config;
+  },
+};
+
+module.exports = nextConfig;
--- a/package-lock.json
+++ b/package-lock.json
--- a/package.json
+++ b/package.json
@ -0,0 +1,36 @@
+{
+  "name": "rln-js",
+  "version": "0.1.0",
+  "private": true,
+  "scripts": {
+    "dev": "next dev",
+    "build": "next build",
+    "start": "next start",
+    "lint": "next lint",
+    "serve": "serve ./out"
+  },
+  "dependencies": {
+    "@waku/rln": "0.1.1-7e8cb89",
+    "@waku/utils": "^0.0.12",
+    "ethers": "^5.7.2",
+    "next": "13.5.6",
+    "react": "^18",
+    "react-dom": "^18",
+    "uuid": "^9.0.1",
+    "zustand": "^4.4.4"
+  },
+  "devDependencies": {
+    "@metamask/types": "^1.1.0",
+    "@types/node": "^20",
+    "@types/react": "^18",
+    "@types/react-dom": "^18",
+    "@types/uuid": "^9.0.6",
+    "autoprefixer": "^10",
+    "eslint": "^8",
+    "eslint-config-next": "13.5.6",
+    "postcss": "^8",
+    "serve": "^14.2.1",
+    "tailwindcss": "^3",
+    "typescript": "^5"
+  }
+}
--- a/postcss.config.js
+++ b/postcss.config.js
@ -0,0 +1,6 @@
+module.exports = {
+  plugins: {
+    tailwindcss: {},
+    autoprefixer: {},
+  },
+};
--- a/public/next.svg
+++ b/public/next.svg
@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 394 80"><path fill="#000" d="M262 0h68.5v12.7h-27.2v66.6h-13.6V12.7H262V0ZM149 0v12.7H94v20.4h44.3v12.6H94v21h55v12.6H80.5V0h68.7zm34.3 0h-17.8l63.8 79.4h17.9l-32-39.7 32-39.6h-17.9l-23 28.6-23-28.6zm18.3 56.7-9-11-27.1 33.7h17.8l18.3-22.7z"/><path fill="#000" d="M81 79.3 17 0H0v79.3h13.6V17l50.2 62.3H81Zm252.6-.4c-1 0-1.8-.4-2.5-1s-1.1-1.6-1.1-2.6.3-1.8 1-2.5 1.6-1 2.6-1 1.8.3 2.5 1a3.4 3.4 0 0 1 .6 4.3 3.7 3.7 0 0 1-3 1.8zm23.2-33.5h6v23.3c0 2.1-.4 4-1.3 5.5a9.1 9.1 0 0 1-3.8 3.5c-1.6.8-3.5 1.3-5.7 1.3-2 0-3.7-.4-5.3-1s-2.8-1.8-3.7-3.2c-.9-1.3-1.4-3-1.4-5h6c.1.8.3 1.6.7 2.2s1 1.2 1.6 1.5c.7.4 1.5.5 2.4.5 1 0 1.8-.2 2.4-.6a4 4 0 0 0 1.6-1.8c.3-.8.5-1.8.5-3V45.5zm30.9 9.1a4.4 4.4 0 0 0-2-3.3 7.5 7.5 0 0 0-4.3-1.1c-1.3 0-2.4.2-3.3.5-.9.4-1.6 1-2 1.6a3.5 3.5 0 0 0-.3 4c.3.5.7.9 1.3 1.2l1.8 1 2 .5 3.2.8c1.3.3 2.5.7 3.7 1.2a13 13 0 0 1 3.2 1.8 8.1 8.1 0 0 1 3 6.5c0 2-.5 3.7-1.5 5.1a10 10 0 0 1-4.4 3.5c-1.8.8-4.1 1.2-6.8 1.2-2.6 0-4.9-.4-6.8-1.2-2-.8-3.4-2-4.5-3.5a10 10 0 0 1-1.7-5.6h6a5 5 0 0 0 3.5 4.6c1 .4 2.2.6 3.4.6 1.3 0 2.5-.2 3.5-.6 1-.4 1.8-1 2.4-1.7a4 4 0 0 0 .8-2.4c0-.9-.2-1.6-.7-2.2a11 11 0 0 0-2.1-1.4l-3.2-1-3.8-1c-2.8-.7-5-1.7-6.6-3.2a7.2 7.2 0 0 1-2.4-5.7 8 8 0 0 1 1.7-5 10 10 0 0 1 4.3-3.5c2-.8 4-1.2 6.4-1.2 2.3 0 4.4.4 6.2 1.2 1.8.8 3.2 2 4.3 3.4 1 1.4 1.5 3 1.5 5h-5.8z"/></svg>
--- a/public/vercel.svg
+++ b/public/vercel.svg
@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 283 64"><path fill="black" d="M141 16c-11 0-19 7-19 18s9 18 20 18c7 0 13-3 16-7l-7-5c-2 3-6 4-9 4-5 0-9-3-10-7h28v-3c0-11-8-18-19-18zm-9 15c1-4 4-7 9-7s8 3 9 7h-18zm117-15c-11 0-19 7-19 18s9 18 20 18c6 0 12-3 16-7l-8-5c-2 3-5 4-8 4-5 0-9-3-11-7h28l1-3c0-11-8-18-19-18zm-10 15c2-4 5-7 10-7s8 3 9 7h-19zm-39 3c0 6 4 10 10 10 4 0 7-2 9-5l8 5c-3 5-9 8-17 8-11 0-19-7-19-18s8-18 19-18c8 0 14 3 17 8l-8 5c-2-3-5-5-9-5-6 0-10 4-10 10zm83-29v46h-9V5h9zM37 0l37 64H0L37 0zm92 5-27 48L74 5h10l18 30 17-30h10zm59 12v10l-3-1c-6 0-10 4-10 10v15h-9V17h9v9c0-5 6-9 13-9z"/></svg>
--- a/src/app/favicon.ico
+++ b/src/app/favicon.ico
--- a/src/app/globals.css
+++ b/src/app/globals.css
@ -0,0 +1,27 @@
+@tailwind base;
+@tailwind components;
+@tailwind utilities;
+
+:root {
+  --foreground-rgb: 0, 0, 0;
+  --background-start-rgb: 214, 219, 220;
+  --background-end-rgb: 255, 255, 255;
+}
+
+@media (prefers-color-scheme: dark) {
+  :root {
+    --foreground-rgb: 255, 255, 255;
+    --background-start-rgb: 0, 0, 0;
+    --background-end-rgb: 0, 0, 0;
+  }
+}
+
+body {
+  color: rgb(var(--foreground-rgb));
+  background: linear-gradient(
+      to bottom,
+      transparent,
+      rgb(var(--background-end-rgb))
+    )
+    rgb(var(--background-start-rgb));
+}
--- a/src/app/home/components/Blockchain.tsx
+++ b/src/app/home/components/Blockchain.tsx
@ -0,0 +1,28 @@
+import { Block, BlockTypes } from "@/components/Block";
+import { Button } from "@/components/Button";
+import { Subtitle } from "@/components/Subtitle";
+import { useContract, useStore } from "@/hooks";
+
+export const Blockchain: React.FunctionComponent<{}> = () => {
+  const { ethAccount, lastMembershipID } = useStore();
+  const { onFetchContract } = useContract();
+
+  return (
+    <Block className="mt-10">
+      <Block className="mb-3" type={BlockTypes.FlexHorizontal}>
+        <Subtitle>Contract</Subtitle>
+        <Button onClick={onFetchContract}>Fetch state</Button>
+      </Block>
+
+      <Block type={BlockTypes.FlexHorizontal}>
+        <p>Your address</p>
+        <code>{ethAccount || "Not loaded yet"}</code>
+      </Block>
+
+      <Block type={BlockTypes.FlexHorizontal}>
+        <p>Latest membership ID on contract</p>
+        <code>{lastMembershipID || "Not loaded yet"}</code>
+      </Block>
+    </Block>
+  );
+};
--- a/src/app/home/components/Header.tsx
+++ b/src/app/home/components/Header.tsx
@ -0,0 +1,17 @@
+import { Block, BlockTypes } from "@/components/Block";
+import { Title } from "@/components/Title";
+import { Status } from "@/components/Status";
+import { useStore } from "@/hooks";
+
+export const Header: React.FunctionComponent<{}> = () => {
+  const { appStatus } = useStore();
+
+  return (
+    <>
+      <Block className="mb-5" type={BlockTypes.FlexHorizontal}>
+        <Title>Waku RLN</Title>
+      </Block>
+      <Status text="Application status" mark={appStatus} />
+    </>
+  );
+};
--- a/src/app/home/components/Keystore.tsx
+++ b/src/app/home/components/Keystore.tsx
@ -0,0 +1,158 @@
+import React from "react";
+import { Block, BlockTypes } from "@/components/Block";
+import { Button } from "@/components/Button";
+import { Subtitle } from "@/components/Subtitle";
+import { useRLN, useStore, useWallet } from "@/hooks";
+import { useKeystore } from "@/hooks/useKeystore";
+
+export const Keystore: React.FunctionComponent<{}> = () => {
+  const { keystoreCredentials } = useStore();
+  const { onGenerateCredentials } = useWallet();
+  const { onReadCredentials, onRegisterCredentials } = useKeystore();
+
+  const { password, onPasswordChanged } = usePassword();
+  const { selectedKeystore, onKeystoreChanged } = useSelectedKeystore();
+  const { onExportKeystore, onImportKeystoreFileChange } =
+    useImportExportKeystore();
+
+  const credentialsNodes = React.useMemo(
+    () =>
+      keystoreCredentials.map((v) => (
+        <option key={v} value={v}>
+          {v}
+        </option>
+      )),
+    [keystoreCredentials]
+  );
+
+  return (
+    <Block className="mt-10">
+      <Block type={BlockTypes.FlexHorizontal}>
+        <Subtitle>Keystore</Subtitle>
+        <div>
+          <Button>
+            <label htmlFor="keystore-import" className="cursor-pointer">
+              Import
+            </label>
+          </Button>
+          <input
+            id="keystore-import"
+            type="file"
+            className="hidden"
+            onChange={onImportKeystoreFileChange}
+          />
+          <Button className="ml-2" onClick={onExportKeystore}>
+            Export
+          </Button>
+        </div>
+      </Block>
+
+      <Block className="mt-4">
+        <label
+          htmlFor="keystore-input"
+          className="block mb-2 text-sm font-medium text-gray-900 dark:text-white"
+        >
+          Password(used for reading/saving into Keystore)
+        </label>
+        <input
+          type="text"
+          value={password}
+          id="keystore-input"
+          onChange={onPasswordChanged}
+          className="bg-gray-50 border border-gray-300 text-gray-900 text-sm w-full rounded-lg focus:ring-blue-500 focus:border-blue-500 block p-2.5 dark:bg-gray-700 dark:border-gray-600 dark:placeholder-gray-400 dark:text-white dark:focus:ring-blue-500 dark:focus:border-blue-500"
+        />
+      </Block>
+
+      <Block className="mt-4">
+        <p className="text-s mb-2">Generate new credentials from wallet</p>
+        <Button onClick={onGenerateCredentials}>
+          Generate new credentials
+        </Button>
+        <Button
+          className="ml-5"
+          onClick={() => onRegisterCredentials(password)}
+        >
+          Register credentials
+        </Button>
+      </Block>
+
+      <Block className="mt-4">
+        <p className="text-s">Read from Keystore</p>
+        <Block type={BlockTypes.FlexHorizontal}>
+          <select
+            value={selectedKeystore}
+            onChange={onKeystoreChanged}
+            className="bg-gray-50 border border-gray-300 text-gray-900 text-sm rounded-lg focus:ring-blue-500 focus:border-blue-500 block w-3/4 p-2.5 dark:bg-gray-700 dark:border-gray-600 dark:placeholder-gray-400 dark:text-white dark:focus:ring-blue-500 dark:focus:border-blue-500"
+          >
+            {credentialsNodes}
+          </select>
+          <Button onClick={() => onReadCredentials(selectedKeystore, password)}>
+            Read credentials
+          </Button>
+        </Block>
+      </Block>
+    </Block>
+  );
+};
+
+function usePassword() {
+  const [password, setPassword] = React.useState<string>("");
+  const onPasswordChanged = (event: React.FormEvent<HTMLInputElement>) => {
+    setPassword(event.currentTarget.value);
+  };
+
+  return {
+    password,
+    onPasswordChanged,
+  };
+}
+
+function useSelectedKeystore() {
+  const [selectedKeystore, setKeystore] = React.useState<string>("");
+
+  const onKeystoreChanged = (event: React.FormEvent<HTMLSelectElement>) => {
+    setKeystore(event.currentTarget.value || "");
+  };
+
+  return {
+    selectedKeystore,
+    onKeystoreChanged,
+  };
+}
+
+function useImportExportKeystore() {
+  const { rln } = useRLN();
+
+  const onExportKeystore = () => {
+    if (!rln) {
+      return;
+    }
+
+    const filename = "keystore.json";
+    const text = rln.keystore.toString();
+    const file = new File([text], filename, {
+      type: "application/json",
+    });
+
+    const link = document.createElement("a");
+    link.href = URL.createObjectURL(file);
+    link.download = filename;
+    link.click();
+  };
+
+  const onImportKeystoreFileChange = async (
+    event: React.FormEvent<HTMLInputElement>
+  ) => {
+    const file = event.currentTarget?.files?.[0];
+    if (!file || !rln) {
+      return;
+    }
+    const text = await file.text();
+    rln.importKeystore(text);
+  };
+
+  return {
+    onExportKeystore,
+    onImportKeystoreFileChange,
+  };
+}
--- a/src/app/home/components/KeystoreDetails.tsx
+++ b/src/app/home/components/KeystoreDetails.tsx
@ -0,0 +1,45 @@
+import { Block, BlockTypes } from "@/components/Block";
+import { useStore } from "@/hooks";
+import { bytesToHex } from "@waku/utils/bytes";
+
+export const KeystoreDetails: React.FunctionComponent<{}> = () => {
+  const { credentials, activeCredential, activeMembershipID } = useStore();
+
+  return (
+    <Block className="mt-5">
+      <Block className="mt-3" type={BlockTypes.FlexHorizontal}>
+        <p>Keystore hash</p>
+        <code>{activeCredential || "none"}</code>
+      </Block>
+
+      <Block className="mt-3" type={BlockTypes.FlexHorizontal}>
+        <p>Membership ID</p>
+        <code>{activeMembershipID || "none"}</code>
+      </Block>
+
+      <Block className="mt-3" type={BlockTypes.FlexHorizontal}>
+        <p>Secret Hash</p>
+        <code>{renderBytes(credentials?.IDSecretHash)}</code>
+      </Block>
+
+      <Block className="mt-3" type={BlockTypes.FlexHorizontal}>
+        <p>Commitment</p>
+        <code>{renderBytes(credentials?.IDCommitment)}</code>
+      </Block>
+
+      <Block className="mt-3" type={BlockTypes.FlexHorizontal}>
+        <p>Nullifier</p>
+        <code>{renderBytes(credentials?.IDNullifier)}</code>
+      </Block>
+
+      <Block className="mt-3" type={BlockTypes.FlexHorizontal}>
+        <p>Trapdoor</p>
+        <code>{renderBytes(credentials?.IDTrapdoor)}</code>
+      </Block>
+    </Block>
+  );
+};
+
+function renderBytes(bytes: undefined | Uint8Array): string {
+  return bytes ? bytesToHex(bytes) : "none";
+}
--- a/src/app/home/components/Waku.tsx
+++ b/src/app/home/components/Waku.tsx
@ -0,0 +1,112 @@
+import React from "react";
+import { Block } from "@/components/Block";
+import { Subtitle } from "@/components/Subtitle";
+import { Button } from "@/components/Button";
+import { MessageContent, useWaku } from "@/hooks";
+
+export const Waku: React.FunctionComponent<{}> = () => {
+  const { onSend, messages } = useWaku();
+  const { nick, text, onNickChange, onMessageChange, resetText } = useMessage();
+
+  const onSendClick = async () => {
+    await onSend(nick, text);
+    resetText();
+  };
+
+  const renderedMessages = React.useMemo(
+    () => messages.map(renderMessage),
+    [messages]
+  );
+
+  return (
+    <Block className="mt-10">
+      <Subtitle>
+        Waku
+      </Subtitle>
+
+      <Block className="mt-4">
+        <label
+          htmlFor="nick-input"
+          className="block mb-2 text-sm font-medium text-gray-900 dark:text-white"
+        >
+          Your nickname
+        </label>
+        <input
+          type="text"
+          id="nick-input"
+          placeholder="Choose a nickname"
+          value={nick}
+          onChange={onNickChange}
+          className="w-full mr-2 bg-gray-50 border border-gray-300 text-gray-900 text-sm rounded-lg focus:ring-blue-500 focus:border-blue-500 block p-2.5 dark:bg-gray-700 dark:border-gray-600 dark:placeholder-gray-400 dark:text-white dark:focus:ring-blue-500 dark:focus:border-blue-500"
+        />
+      </Block>
+
+      <Block className="mt-4">
+        <Block className="mb-2">
+          <label
+            htmlFor="message-input"
+            className="block mb-2 text-sm font-medium text-gray-900 dark:text-white"
+          >
+            Message
+          </label>
+          <input
+            type="text"
+            id="message-input"
+            value={text}
+            onChange={onMessageChange}
+            placeholder="Text your message here"
+            className="w-full mr-2 bg-gray-50 border border-gray-300 text-gray-900 text-sm rounded-lg focus:ring-blue-500 focus:border-blue-500 block p-2.5 dark:bg-gray-700 dark:border-gray-600 dark:placeholder-gray-400 dark:text-white dark:focus:ring-blue-500 dark:focus:border-blue-500"
+          />
+        </Block>
+        <Button onClick={onSendClick}>Send</Button>
+      </Block>
+
+      <Block className="mt-8">
+        <p className="text-l mb-4">Messages</p>
+        <div>
+          <ul>{renderedMessages}</ul>
+        </div>
+      </Block>
+    </Block>
+  );
+};
+
+function useMessage() {
+  const [nick, setNick] = React.useState<string>("");
+  const [text, setText] = React.useState<string>("");
+
+  const onNickChange = (e: React.SyntheticEvent<HTMLInputElement>) => {
+    setNick(e.currentTarget.value || "");
+  };
+
+  const onMessageChange = (e: React.SyntheticEvent<HTMLInputElement>) => {
+    setText(e.currentTarget.value || "");
+  };
+
+  const resetText = () => {
+    setText("");
+  };
+
+  return {
+    nick,
+    text,
+    resetText,
+    onNickChange,
+    onMessageChange,
+  };
+}
+
+function renderMessage(content: MessageContent) {
+  return (
+    <li key={`${content.nick}-${content.time}`} className="mb-4">
+      <p>
+        <span className="text-lg">{content.nick}</span>
+        <span className="text-sm font-bold">
+          ({content.time})
+        </span>
+        :
+      </p>
+      <p>{content.text}</p>
+    </li>
+  );
+}
--- a/src/app/home/page.tsx
+++ b/src/app/home/page.tsx
@ -0,0 +1,16 @@
+"use client";
+import { Header } from "./components/Header";
+import { Waku } from "./components/Waku";
+import { Keystore } from "./components/Keystore";
+import { KeystoreDetails } from "./components/KeystoreDetails";
+
+export default function Home() {
+  return (
+    <main className="flex min-h-screen flex-col p-24 font-mono max-w-screen-lg m-auto">
+      <Header />
+      <Keystore />
+      <KeystoreDetails />
+      <Waku />
+    </main>
+  );
+}
--- a/src/app/layout.tsx
+++ b/src/app/layout.tsx
@ -0,0 +1,22 @@
+import type { Metadata } from "next";
+import { Inter } from "next/font/google";
+import "./globals.css";
+
+const inter = Inter({ subsets: ["latin"] });
+
+export const metadata: Metadata = {
+  title: "RLN Example",
+  description: "Showcases RLN, Keystore and generation of proofs",
+};
+
+export default function RootLayout({
+  children,
+}: {
+  children: React.ReactNode;
+}) {
+  return (
+    <html lang="en">
+      <body className={inter.className}>{children}</body>
+    </html>
+  );
+}
--- a/src/app/page.tsx
+++ b/src/app/page.tsx
@ -0,0 +1,4 @@
+import Home from "@/app/home/page";
+
+export const dynamic = "force-static";
+export default Home;
--- a/src/components/Block.tsx
+++ b/src/components/Block.tsx
@ -0,0 +1,23 @@
+export enum BlockTypes {
+  FlexHorizontal = "flex-horizontal",
+}
+
+type BlockProps = {
+  children: any;
+  type?: BlockTypes;
+  className?: string;
+};
+
+export const Block: React.FunctionComponent<BlockProps> = (props) => {
+  const flexClassNames =
+    props.type === BlockTypes.FlexHorizontal
+      ? "items-center justify-between lg:flex"
+      : "";
+  const restClassNames = props.className || "";
+
+  return (
+    <div className={`${flexClassNames} ${restClassNames}`}>
+      {props.children}
+    </div>
+  );
+};
--- a/src/components/Button.tsx
+++ b/src/components/Button.tsx
@ -0,0 +1,18 @@
+type ButtonProps = {
+  children: any;
+  className?: string;
+  onClick?: (e?: any) => void;
+};
+
+export const Button: React.FunctionComponent<ButtonProps> = (props) => {
+  return (
+    <button
+      onClick={props.onClick}
+      className={`${
+        props.className || ""
+      } py-2.5 px-5 text-sm font-medium text-gray-900 focus:outline-none bg-white rounded-lg border border-gray-200 hover:bg-gray-100 hover:text-blue-700 focus:z-10 focus:ring-4 focus:ring-gray-200 dark:focus:ring-gray-700 dark:bg-gray-800 dark:text-gray-400 dark:border-gray-600 dark:hover:text-white dark:hover:bg-gray-700`}
+    >
+      {props.children}
+    </button>
+  );
+};
--- a/src/components/Status.tsx
+++ b/src/components/Status.tsx
@ -0,0 +1,13 @@
+type StatusProps = {
+  text: string;
+  mark: string;
+};
+
+export const Status: React.FunctionComponent<StatusProps> = (props) => (
+  <p className="text-s">
+    {props.text}:{" "}
+    <span className="underline underline-offset-3 decoration-4 decoration-blue-400 dark:decoration-blue-600">
+      {props.mark}
+    </span>
+  </p>
+);
--- a/src/components/Subtitle.tsx
+++ b/src/components/Subtitle.tsx
@ -0,0 +1,8 @@
+type SubtitleProps = {
+  children: any;
+  className?: string;
+};
+
+export const Subtitle: React.FunctionComponent<SubtitleProps> = (props) => (
+  <h2 className={`text-2xl ${props.className || ""}`}>{props.children}</h2>
+);
--- a/src/components/Title.tsx
+++ b/src/components/Title.tsx
@ -0,0 +1,8 @@
+type TitleProps = {
+  children: any;
+  className?: string;
+};
+
+export const Title: React.FunctionComponent<TitleProps> = (props) => (
+  <h1 className={`text-4xl ${props.className || ""}`}>{props.children}</h1>
+);
--- a/src/constants.ts
+++ b/src/constants.ts
@ -0,0 +1,5 @@
+export const CONTENT_TOPIC = "/toy-chat/2/luzhou/proto";
+export const PUBSUB_TOPIC = "/waku/2/default-waku/proto";
+
+export const SIGNATURE_MESSAGE =
+  "The signature of this message will be used to generate your RLN credentials. Anyone accessing it may send messages on your behalf, please only share with the RLN dApp";
--- a/src/hooks/index.ts
+++ b/src/hooks/index.ts
@ -0,0 +1,6 @@
+export { useStore } from "./useStore";
+export { useRLN } from "./useRLN";
+export { useWallet } from "./useWallet";
+export { useContract } from "./useContract";
+export { useWaku } from "./useWaku";
+export type { MessageContent } from "./useWaku";
--- a/src/hooks/useContract.ts
+++ b/src/hooks/useContract.ts
@ -0,0 +1,60 @@
+import React from "react";
+import { useStore } from "./useStore";
+import { useRLN } from "./useRLN";
+
+type UseContractResult = {
+  onFetchContract: () => void;
+};
+
+export const useContract = (): UseContractResult => {
+  const { rln } = useRLN();
+  const { setEthAccount, setChainID, setLastMembershipID } = useStore();
+
+  const onFetchContract = React.useCallback(async () => {
+    const fetchAccounts = new Promise<void>(async (resolve) => {
+      if (!rln) {
+        console.log("Cannot fetch wallet, not provider found.");
+        resolve();
+        return;
+      }
+
+      try {
+        const accounts = await rln.ethProvider.send("eth_requestAccounts", []);
+        setEthAccount(accounts[0] || "");
+        const network = await rln.ethProvider.getNetwork();
+        setChainID(network.chainId);
+      } catch (error) {
+        console.error("Failed to connect to account: ", error);
+      }
+      resolve();
+    });
+
+    const fetchContract = new Promise<void>(async (resolve) => {
+      if (!rln?.rlnContract || !rln?.rlnInstance) {
+        console.log("Cannot fetch contract info, no contract found.");
+        resolve();
+        return;
+      }
+
+      try {
+        await rln.rlnContract.fetchMembers(rln.rlnInstance);
+        rln.rlnContract.subscribeToMembers(rln.rlnInstance);
+
+        const last = rln.rlnContract.members.at(-1);
+
+        if (last) {
+          setLastMembershipID(last.index.toNumber());
+        }
+      } catch (error) {
+        console.error("Failed to fetch contract state: ", error);
+      }
+      resolve();
+    });
+
+    await Promise.any([fetchAccounts, fetchContract]);
+  }, [rln, setEthAccount, setChainID, setLastMembershipID]);
+
+  return {
+    onFetchContract,
+  };
+};
--- a/src/hooks/useKeystore.ts
+++ b/src/hooks/useKeystore.ts
@ -0,0 +1,83 @@
+import React from "react";
+import { useStore } from "./useStore";
+import { useRLN } from "./useRLN";
+import { SEPOLIA_CONTRACT } from "@waku/rln";
+import { StatusEventPayload } from "@/services/rln";
+
+type UseKeystoreResult = {
+  onReadCredentials: (hash: string, password: string) => void;
+  onRegisterCredentials: (password: string) => void;
+};
+
+export const useKeystore = (): UseKeystoreResult => {
+  const { rln } = useRLN();
+  const {
+    credentials,
+    setActiveCredential,
+    setActiveMembershipID,
+    setAppStatus,
+    setCredentials,
+  } = useStore();
+
+  const onRegisterCredentials = React.useCallback(
+    async (password: string) => {
+      if (!credentials || !rln?.rlnContract || !password) {
+        return;
+      }
+
+      try {
+        setAppStatus(StatusEventPayload.CREDENTIALS_REGISTERING);
+        const membershipInfo = await rln.rlnContract.registerWithKey(
+          credentials
+        );
+        const membershipID = membershipInfo!.index.toNumber();
+        const keystoreHash = await rln.keystore.addCredential(
+          {
+            membership: {
+              treeIndex: membershipID,
+              chainId: SEPOLIA_CONTRACT.chainId,
+              address: SEPOLIA_CONTRACT.address,
+            },
+            identity: credentials,
+          },
+          password
+        );
+        setActiveCredential(keystoreHash);
+        setActiveMembershipID(membershipID);
+        rln.saveKeystore();
+        setAppStatus(StatusEventPayload.CREDENTIALS_REGISTERED);
+      } catch (error) {
+        setAppStatus(StatusEventPayload.CREDENTIALS_FAILURE);
+        console.error("Failed to register to RLN Contract: ", error);
+        return;
+      }
+    },
+    [credentials, rln, setActiveCredential, setActiveMembershipID, setAppStatus]
+  );
+
+  const onReadCredentials = React.useCallback(
+    async (hash: string, password: string) => {
+      if (!rln || !hash || !password) {
+        return;
+      }
+
+      try {
+        const record = await rln.keystore.readCredential(hash, password);
+        if (record) {
+          setCredentials(record.identity);
+          setActiveCredential(hash);
+          setActiveMembershipID(record.membership.treeIndex);
+        }
+      } catch (error) {
+        console.error("Failed to read credentials from Keystore.");
+        return;
+      }
+    },
+    [rln, setActiveCredential, setActiveMembershipID, setCredentials]
+  );
+
+  return {
+    onRegisterCredentials,
+    onReadCredentials,
+  };
+};
--- a/src/hooks/useRLN.ts
+++ b/src/hooks/useRLN.ts
@ -0,0 +1,50 @@
+"use client";
+import React from "react";
+import { rln, RLN, RLNEventsNames } from "@/services/rln";
+import { useStore } from "./useStore";
+
+type RLNResult = {
+  rln: undefined | RLN;
+};
+
+export const useRLN = (): RLNResult => {
+  const { setAppStatus, setKeystoreCredentials } = useStore();
+  const rlnRef = React.useRef<undefined | RLN>(undefined);
+
+  React.useEffect(() => {
+    if (rlnRef.current || !rln) {
+      return;
+    }
+
+    let terminate = false;
+
+    const statusListener = (event: CustomEvent) => {
+      setAppStatus(event?.detail);
+    };
+    rln.addEventListener(RLNEventsNames.Status, statusListener);
+
+    const keystoreListener = (event: CustomEvent) => {
+      setKeystoreCredentials(event?.detail || []);
+    };
+    rln.addEventListener(RLNEventsNames.Keystore, keystoreListener);
+
+    const run = async () => {
+      if (terminate) {
+        return;
+      }
+      await rln?.init();
+      rlnRef.current = rln;
+    };
+
+    run();
+    return () => {
+      terminate = true;
+      rln?.removeEventListener(RLNEventsNames.Status, statusListener);
+      rln?.removeEventListener(RLNEventsNames.Keystore, keystoreListener);
+    };
+  }, [rlnRef, setAppStatus]);
+
+  return {
+    rln: rlnRef.current,
+  };
+};
--- a/src/hooks/useStore.ts
+++ b/src/hooks/useStore.ts
@ -0,0 +1,68 @@
+import { create } from "zustand";
+import { IdentityCredential } from "@waku/rln";
+
+type StoreResult = {
+  appStatus: string;
+  setAppStatus: (v: string) => void;
+  ethAccount: string;
+  setEthAccount: (v: string) => void;
+  chainID: undefined | number;
+  setChainID: (v: number) => void;
+  lastMembershipID: undefined | number;
+  setLastMembershipID: (v: number) => void;
+  credentials: undefined | IdentityCredential;
+  setCredentials: (v: undefined | IdentityCredential) => void;
+
+  activeCredential: string;
+  keystoreCredentials: string[];
+  setKeystoreCredentials: (v: string[]) => void;
+  setActiveCredential: (v: string) => void;
+  activeMembershipID: undefined | number;
+  setActiveMembershipID: (v: number) => void;
+
+  wakuStatus: string;
+  setWakuStatus: (v: string) => void;
+};
+
+const DEFAULT_VALUE = "none";
+
+export const useStore = create<StoreResult>((set) => {
+  const generalModule = {
+    appStatus: DEFAULT_VALUE,
+    setAppStatus: (v: string) => set((state) => ({ ...state, appStatus: v })),
+
+    ethAccount: "",
+    setEthAccount: (v: string) => set((state) => ({ ...state, ethAccount: v })),
+    chainID: undefined,
+    setChainID: (v: number) => set((state) => ({ ...state, chainID: v })),
+    lastMembershipID: undefined,
+    setLastMembershipID: (v: number) =>
+      set((state) => ({ ...state, lastMembershipID: v })),
+    credentials: undefined,
+    setCredentials: (v: undefined | IdentityCredential) =>
+      set((state) => ({ ...state, credentials: v })),
+  };
+
+  const wakuModule = {
+    wakuStatus: DEFAULT_VALUE,
+    setWakuStatus: (v: string) => set((state) => ({ ...state, wakuStatus: v })),
+  };
+
+  const keystoreModule = {
+    activeCredential: DEFAULT_VALUE,
+    setActiveCredential: (v: string) =>
+      set((state) => ({ ...state, activeCredential: v })),
+    keystoreCredentials: [],
+    setKeystoreCredentials: (v: string[]) =>
+      set((state) => ({ ...state, keystoreCredentials: v })),
+    activeMembershipID: undefined,
+    setActiveMembershipID: (v: number) =>
+      set((state) => ({ ...state, activeMembershipID: v })),
+  };
+
+  return {
+    ...generalModule,
+    ...wakuModule,
+    ...keystoreModule,
+  };
+});
--- a/src/hooks/useWaku.ts
+++ b/src/hooks/useWaku.ts
@ -0,0 +1,55 @@
+import React from "react";
+import { CONTENT_TOPIC } from "@/constants";
+import { Message, waku } from "@/services/waku";
+
+export type MessageContent = {
+  nick: string;
+  text: string;
+  time: string;
+};
+
+export const useWaku = () => {
+  const [messages, setMessages] = React.useState<MessageContent[]>([]);
+
+  React.useEffect(() => {
+    const messageListener = (event: CustomEvent) => {
+      const messages: Message[] = event.detail;
+      const parsedMessaged = messages.map((message) => {
+        const time = new Date(message.timestamp);
+        const payload = JSON.parse(atob(message.payload));
+
+        return {
+          nick: payload?.nick || "unknown",
+          text: payload?.text || "empty",
+          time: time.toDateString(),
+        };
+      });
+
+      setMessages((prev) => [...prev, ...parsedMessaged]);
+    };
+
+    waku.filter.addEventListener(CONTENT_TOPIC, messageListener);
+
+    return () => {
+      waku.filter.removeEventListener(CONTENT_TOPIC, messageListener);
+    };
+  }, [setMessages]);
+
+  const onSend = React.useCallback(
+    async (nick: string, text: string) => {
+      await waku.lightPush.send({
+        version: 0,
+        timestamp: Date.now(),
+        contentTopic: CONTENT_TOPIC,
+        payload: btoa(JSON.stringify({
+          nick,
+          text
+        })),
+      });
+    },
+    []
+  );
+
+  return { onSend, messages };
+};
+
--- a/src/hooks/useWallet.ts
+++ b/src/hooks/useWallet.ts
@ -0,0 +1,62 @@
+import React from "react";
+import { useStore } from "./useStore";
+import { isEthereumEvenEmitterValid } from "@/utils/ethereum";
+import { useRLN } from "./useRLN";
+import { SIGNATURE_MESSAGE } from "@/constants";
+
+type UseWalletResult = {
+  onGenerateCredentials: () => void;
+};
+
+export const useWallet = (): UseWalletResult => {
+  const { rln } = useRLN();
+  const { setEthAccount, setChainID, setCredentials } = useStore();
+
+  React.useEffect(() => {
+    const ethereum = window.ethereum;
+    if (!isEthereumEvenEmitterValid(ethereum)) {
+      console.log("Cannot subscribe to ethereum events.");
+      return;
+    }
+
+    const onAccountsChanged = (accounts: string[]) => {
+      setEthAccount(accounts[0] || "");
+    };
+    ethereum.on("accountsChanged", onAccountsChanged);
+
+    const onChainChanged = (chainID: string) => {
+      const ID = parseInt(chainID, 16);
+      setChainID(ID);
+    };
+    ethereum.on("chainChanged", onChainChanged);
+
+    return () => {
+      ethereum.removeListener("chainChanged", onChainChanged);
+      ethereum.removeListener("accountsChanged", onAccountsChanged);
+    };
+  }, [setEthAccount, setChainID]);
+
+  const onGenerateCredentials = React.useCallback(async () => {
+    if (!rln?.ethProvider) {
+      console.log("Cannot generate credentials, no provider found.");
+      return;
+    }
+
+    const signer = rln.ethProvider.getSigner();
+    const signature = await signer.signMessage(
+      `${SIGNATURE_MESSAGE}. Nonce: ${randomNumber()}`
+    );
+    const credentials = await rln.rlnInstance?.generateSeededIdentityCredential(
+      signature
+    );
+    setCredentials(credentials);
+  }, [rln, setCredentials]);
+
+  return {
+    onGenerateCredentials,
+  };
+};
+
+function randomNumber(): number {
+  return Math.ceil(Math.random() * 1000);
+}
--- a/src/react-app-env.d.ts
+++ b/src/react-app-env.d.ts
@ -0,0 +1,14 @@
+/// <reference types="react-scripts" />
+
+type EthereumEvents = "accountsChanged" | "chainChanged";
+type EthereumEventListener = (v: any) => void;
+
+type Ethereum = {
+  request: () => void;
+  on: (name: EthereumEvents, fn: EthereumEventListener) => void;
+  removeListener: (name: EthereumEvents, fn: EthereumEventListener) => void;
+};
+
+interface Window {
+  ethereum: Ethereum;
+}
--- a/src/services/rln.ts
+++ b/src/services/rln.ts
@ -0,0 +1,147 @@
+import { ethers } from "ethers";
+import {
+  create,
+  Keystore,
+  RLNContract,
+  SEPOLIA_CONTRACT,
+  RLNInstance,
+} from "@waku/rln";
+import { isBrowserProviderValid } from "@/utils/ethereum";
+
+export enum RLNEventsNames {
+  Status = "status",
+  Keystore = "keystore-changed",
+}
+
+export enum StatusEventPayload {
+  WASM_LOADING = "WASM Blob download in progress...",
+  WASM_FAILED = "Failed to download WASM, check console",
+  CONTRACT_LOADING = "Connecting to RLN contract",
+  CONTRACT_FAILED = "Failed to connect to RLN contract",
+  RLN_INITIALIZED = "RLN dependencies initialized",
+  KEYSTORE_LOCAL = "Keystore initialized from localStore",
+  KEYSTORE_NEW = "New Keystore was initialized",
+  CREDENTIALS_REGISTERING = "Registering credentials...",
+  CREDENTIALS_REGISTERED = "Registered credentials",
+  CREDENTIALS_FAILURE = "Failed to register credentials, check console",
+}
+
+type EventListener = (event: CustomEvent) => void;
+
+type IRLN = {
+  saveKeystore: () => void;
+  addEventListener: (name: RLNEventsNames, fn: EventListener) => void;
+  removeEventListener: (name: RLNEventsNames, fn: EventListener) => void;
+};
+
+export class RLN implements IRLN {
+  private readonly emitter = new EventTarget();
+  public readonly ethProvider: ethers.providers.Web3Provider;
+
+  public rlnInstance: undefined | RLNInstance;
+  public rlnContract: undefined | RLNContract;
+  public keystore: Keystore;
+
+  private initialized = false;
+  private initializing = false;
+
+  public constructor() {
+    const ethereum =
+      window.ethereum as unknown as ethers.providers.ExternalProvider;
+    if (!isBrowserProviderValid(ethereum)) {
+      throw Error(
+        "Invalid Ethereum provider present on the page. Check if MetaMask is connected."
+      );
+    }
+    this.ethProvider = new ethers.providers.Web3Provider(ethereum, "any");
+    this.keystore = this.initKeystore();
+  }
+
+  public async init(): Promise<void> {
+    if (this.initialized || this.initializing) {
+      return;
+    }
+
+    this.initializing = true;
+    const rlnInstance = await this.initRLNWasm();
+    await this.initRLNContract(rlnInstance);
+
+    this.emitStatusEvent(StatusEventPayload.RLN_INITIALIZED);
+
+    // emit keystore keys once app is ready
+    this.emitKeystoreKeys();
+
+    this.initialized = true;
+    this.initializing = false;
+  }
+
+  private async initRLNWasm(): Promise<RLNInstance> {
+    this.emitStatusEvent(StatusEventPayload.WASM_LOADING);
+    try {
+      this.rlnInstance = await create();
+      return this.rlnInstance;
+    } catch (error) {
+      console.error(
+        "Failed at fetching WASM and creating RLN instance: ",
+        error
+      );
+      this.emitStatusEvent(StatusEventPayload.WASM_FAILED);
+      throw error;
+    }
+  }
+
+  private async initRLNContract(rlnInstance: RLNInstance): Promise<void> {
+    this.emitStatusEvent(StatusEventPayload.CONTRACT_LOADING);
+    try {
+      this.rlnContract = await RLNContract.init(rlnInstance, {
+        registryAddress: SEPOLIA_CONTRACT.address,
+        provider: this.ethProvider.getSigner(),
+      });
+    } catch (error) {
+      console.error("Failed to connect to RLN contract: ", error);
+      this.emitStatusEvent(StatusEventPayload.CONTRACT_FAILED);
+      throw error;
+    }
+  }
+
+  private initKeystore(): Keystore {
+    const localKeystoreString = localStorage.getItem("keystore");
+    const _keystore = Keystore.fromString(localKeystoreString || "");
+
+    return _keystore || Keystore.create();
+  }
+
+  public addEventListener(name: RLNEventsNames, fn: EventListener) {
+    return this.emitter.addEventListener(name, fn as any);
+  }
+
+  public removeEventListener(name: RLNEventsNames, fn: EventListener) {
+    return this.emitter.removeEventListener(name, fn as any);
+  }
+
+  private emitStatusEvent(payload: StatusEventPayload) {
+    this.emitter.dispatchEvent(
+      new CustomEvent(RLNEventsNames.Status, { detail: payload })
+    );
+  }
+
+  private emitKeystoreKeys() {
+    const credentials = Object.keys(this.keystore.toObject().credentials || {});
+    this.emitter.dispatchEvent(
+      new CustomEvent(RLNEventsNames.Keystore, { detail: credentials })
+    );
+  }
+
+  public async saveKeystore() {
+    localStorage.setItem("keystore", this.keystore.toString());
+    this.emitKeystoreKeys();
+  }
+
+  public importKeystore(value: string) {
+    this.keystore = Keystore.fromString(value) || Keystore.create();
+    this.saveKeystore();
+  }
+}
+
+// Next.js sometimes executes code in server env where there is no window object
+export const rln = typeof window === "undefined" ? undefined : new RLN();
--- a/src/services/waku.ts
+++ b/src/services/waku.ts
@ -0,0 +1,140 @@
+import { v4 as uuid } from "uuid";
+import {
+  PUBSUB_TOPIC,
+} from "@/constants";
+import { http } from "@/utils/http";
+
+export type Message = {
+  payload: string,
+  contentTopic: string,
+  version: number,
+  timestamp: number
+};
+
+type EventListener = (event: CustomEvent) => void;
+
+const SECOND = 1000;
+const LOCAL_NODE = "http://127.0.0.1:8645/";
+const FILTER_URL = "/filter/v2/";
+const LIGHT_PUSH = "/lightpush/v1/";
+
+class Filter {
+  private readonly internalEmitter = new EventTarget();
+  private readonly subscriptionsEmitter = new EventTarget();
+
+  private contentTopicToRequestID: Map<string, string> = new Map();
+  private contentTopicListeners: Map<string, number> = new Map();
+
+  // only one content topic subscriptions is possible now
+  private subscriptionRoutine: undefined | number;
+
+  constructor() {
+    this.internalEmitter.addEventListener("subscribed", this.handleSubscribed.bind(this));
+    this.internalEmitter.addEventListener("unsubscribed", this.handleUnsubscribed.bind(this));
+  }
+  
+  private async handleSubscribed(_e: Event) {
+      const event = _e as CustomEvent;
+      const contentTopic = event.detail;
+      const numberOfListeners = this.contentTopicListeners.get(contentTopic);
+
+      // if nwaku node already subscribed to this content topic
+      if (numberOfListeners) {
+        this.contentTopicListeners.set(contentTopic, numberOfListeners + 1);
+        return;
+      }
+
+      const requestId = uuid();
+      await http.post(`${LOCAL_NODE}/${FILTER_URL}/subscriptions`, {
+          requestId,
+          contentFilters: [contentTopic],
+          pubsubTopic: PUBSUB_TOPIC
+      });
+
+      this.subscriptionRoutine = window.setInterval(async () => {
+        await this.fetchMessages();
+      }, SECOND);
+
+      this.contentTopicToRequestID.set(contentTopic, requestId);
+      this.contentTopicListeners.set(contentTopic, 1);
+  }
+
+  private async handleUnsubscribed(_e: Event) {
+    const event = _e as CustomEvent;
+    const contentTopic = event.detail;
+    const requestId = this.contentTopicToRequestID.get(contentTopic);
+    const numberOfListeners = this.contentTopicListeners.get(contentTopic);
+
+    if (!numberOfListeners || !requestId) {
+      return;
+    }
+
+    if (numberOfListeners - 1 > 0) {
+      this.contentTopicListeners.set(contentTopic, numberOfListeners - 1);
+      return;
+    }
+
+    await http.delete(`${LOCAL_NODE}/${FILTER_URL}/subscriptions`, {
+      requestId,
+      contentFilters: [contentTopic],
+      pubsubTopic: PUBSUB_TOPIC
+    });
+
+    clearInterval(this.subscriptionRoutine);
+    this.contentTopicListeners.delete(contentTopic);
+    this.contentTopicToRequestID.delete(contentTopic);
+  }
+
+  private async fetchMessages(): Promise<void> {
+    const contentTopic = Object.keys(this.contentTopicListeners)[0];
+
+    if (!contentTopic) {
+      return;
+    }
+
+    const response = await http.get(`${LOCAL_NODE}/${FILTER_URL}/${encodeURIComponent(contentTopic)}`);
+    const body: Message[] = await response.json();
+
+    if (!body || !body.length) {
+      return;
+    }
+
+    this.subscriptionsEmitter.dispatchEvent(
+      new CustomEvent(contentTopic, { detail: body })
+    );
+  }
+
+  public addEventListener(contentTopic: string, fn: EventListener) {
+    this.emitSubscribedEvent(contentTopic);
+    return this.subscriptionsEmitter.addEventListener(contentTopic, fn as any);
+  }
+
+  public removeEventListener(contentTopic: string, fn: EventListener) {
+    this.emitUnsubscribedEvent(contentTopic);
+    return this.subscriptionsEmitter.removeEventListener(contentTopic, fn as any);
+  }
+
+  private emitSubscribedEvent(contentTopic: string) {
+    this.internalEmitter.dispatchEvent(new CustomEvent("subscribed", { detail: contentTopic }));
+  }
+
+  private emitUnsubscribedEvent(contentTopic: string) {
+    this.internalEmitter.dispatchEvent(new CustomEvent("unsubscribed", { detail: contentTopic }));
+  }
+}
+
+class LightPush {
+  constructor() {}
+
+  public async send(message: Message): Promise<void> {
+    await http.post(`${LOCAL_NODE}/${LIGHT_PUSH}/message`, {
+      pubsubTopic: PUBSUB_TOPIC,
+      message,
+    });
+  }
+}
+
+export const waku = {
+  filter: new Filter(),
+  lightPush: new LightPush(),
+};
--- a/src/utils/ethereum.ts
+++ b/src/utils/ethereum.ts
@ -0,0 +1,17 @@
+export const isBrowserProviderValid = (obj: any): boolean => {
+  if (obj && typeof obj.request === "function") {
+    return true;
+  }
+  return false;
+};
+
+export const isEthereumEvenEmitterValid = (obj: any): boolean => {
+  if (
+    obj &&
+    typeof obj.on === "function" &&
+    typeof obj.removeListener === "function"
+  ) {
+    return true;
+  }
+  return false;
+};
--- a/src/utils/http.ts
+++ b/src/utils/http.ts
@ -0,0 +1,31 @@
+export const http = {
+    post(url: string, body: any) {
+        return fetch(new URL(url), {
+            method: "POST",
+            mode: "no-cors",
+            referrerPolicy: "no-referrer", 
+            headers: {
+                'Accept': 'application/json',
+                'Content-Type': 'application/json',
+                "Access-Control-Allow-Origin": "*",
+            },
+            body: JSON.stringify(body)
+          });
+    },
+    delete(url: string, body: any) {
+        return fetch(new URL(url), {
+            method: "DELETE",
+            mode: "no-cors",
+            referrerPolicy: "no-referrer", 
+            headers: {
+                'Accept': 'application/json',
+                'Content-Type': 'application/json',
+                "Access-Control-Allow-Origin": "*",
+            },
+            body: JSON.stringify(body)
+          });
+    },
+    get(url: string) {
+        return fetch(new URL(url));
+    }
+};
--- a/tailwind.config.ts
+++ b/tailwind.config.ts
@ -0,0 +1,20 @@
+import type { Config } from "tailwindcss";
+
+const config: Config = {
+  content: [
+    "./src/pages/**/*.{js,ts,jsx,tsx,mdx}",
+    "./src/components/**/*.{js,ts,jsx,tsx,mdx}",
+    "./src/app/**/*.{js,ts,jsx,tsx,mdx}",
+  ],
+  theme: {
+    extend: {
+      backgroundImage: {
+        "gradient-radial": "radial-gradient(var(--tw-gradient-stops))",
+        "gradient-conic":
+          "conic-gradient(from 180deg at 50% 50%, var(--tw-gradient-stops))",
+      },
+    },
+  },
+  plugins: [],
+};
+export default config;
--- a/tsconfig.json
+++ b/tsconfig.json
@ -0,0 +1,27 @@
+{
+  "compilerOptions": {
+    "target": "es5",
+    "lib": ["dom", "dom.iterable", "esnext"],
+    "allowJs": true,
+    "skipLibCheck": true,
+    "strict": true,
+    "noEmit": true,
+    "esModuleInterop": true,
+    "module": "esnext",
+    "moduleResolution": "bundler",
+    "resolveJsonModule": true,
+    "isolatedModules": true,
+    "jsx": "preserve",
+    "incremental": true,
+    "plugins": [
+      {
+        "name": "next"
+      }
+    ],
+    "paths": {
+      "@/*": ["./src/*"]
+    }
+  },
+  "include": ["next-env.d.ts", "**/*.ts", "**/*.tsx", ".next/types/**/*.ts"],
+  "exclude": ["node_modules"]
+}
				`@ -0,0 +1 @@`
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