Implement Style Editor, Preview, and Settings Schema

.gitignore

@@ -0,0 +1,41 @@
+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+/.pnp
+.pnp.*
+.yarn/*
+!.yarn/patches
+!.yarn/plugins
+!.yarn/releases
+!.yarn/versions
+
+# testing
+/coverage
+
+# next.js
+/.next/
+/out/
+
+# production
+/build
+
+# misc
+.DS_Store
+*.pem
+
+# debug
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+.pnpm-debug.log*
+
+# env files (can opt-in for committing if needed)
+.env*
+
+# vercel
+.vercel
+
+# typescript
+*.tsbuildinfo
+next-env.d.ts

README.md

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+This is a [Next.js](https://nextjs.org) project bootstrapped with [`create-next-app`](https://nextjs.org/docs/app/api-reference/cli/create-next-app).
+
+## 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.
+
+You can start editing the page by modifying `app/page.tsx`. The page auto-updates as you edit the file.
+
+This project uses [`next/font`](https://nextjs.org/docs/app/building-your-application/optimizing/fonts) to automatically optimize and load [Geist](https://vercel.com/font), a new font family for Vercel.
+
+## Learn More
+
+To learn more about Next.js, take a look at the following resources:
+
+- [Next.js Documentation](https://nextjs.org/docs) - learn about Next.js features and API.
+- [Learn Next.js](https://nextjs.org/learn) - an interactive Next.js tutorial.
+
+You can check out [the Next.js GitHub repository](https://github.com/vercel/next.js) - your feedback and contributions are welcome!
+
+## Deploy on Vercel
+
+The easiest way to deploy your Next.js app is to use the [Vercel Platform](https://vercel.com/new?utm_medium=default-template&filter=next.js&utm_source=create-next-app&utm_campaign=create-next-app-readme) from the creators of Next.js.
+
+Check out our [Next.js deployment documentation](https://nextjs.org/docs/app/building-your-application/deploying) for more details.

eslint.config.mjs

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+import { defineConfig, globalIgnores } from "eslint/config";
+import nextVitals from "eslint-config-next/core-web-vitals";
+import nextTs from "eslint-config-next/typescript";
+
+const eslintConfig = defineConfig([
+  ...nextVitals,
+  ...nextTs,
+  // Override default ignores of eslint-config-next.
+  globalIgnores([
+    // Default ignores of eslint-config-next:
+    ".next/**",
+    "out/**",
+    "build/**",
+    "next-env.d.ts",
+  ]),
+]);
+
+export default eslintConfig;

next.config.ts

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+import type { NextConfig } from "next";
+
+const nextConfig: NextConfig = {
+  /* config options here */
+  reactCompiler: true,
+};
+
+export default nextConfig;

package.json

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+{
+  "name": "open-chat-overlay",
+  "version": "0.1.0",
+  "private": true,
+  "scripts": {
+    "dev": "next dev",
+    "build": "next build",
+    "start": "next start",
+    "lint": "eslint"
+  },
+  "dependencies": {
+    "clsx": "^2.1.1",
+    "next": "16.1.1",
+    "react": "19.2.3",
+    "react-dom": "19.2.3",
+    "tailwind-merge": "^3.4.0"
+  },
+  "devDependencies": {
+    "@tailwindcss/postcss": "^4",
+    "@types/node": "^20",
+    "@types/react": "^19",
+    "@types/react-dom": "^19",
+    "babel-plugin-react-compiler": "1.0.0",
+    "eslint": "^9",
+    "eslint-config-next": "16.1.1",
+    "tailwindcss": "^4",
+    "typescript": "^5"
+  }
+}

postcss.config.mjs

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+const config = {
+  plugins: {
+    "@tailwindcss/postcss": {},
+  },
+};
+
+export default config;

public/file.svg

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+<svg fill="none" viewBox="0 0 16 16" xmlns="http://www.w3.org/2000/svg"><path d="M14.5 13.5V5.41a1 1 0 0 0-.3-.7L9.8.29A1 1 0 0 0 9.08 0H1.5v13.5A2.5 2.5 0 0 0 4 16h8a2.5 2.5 0 0 0 2.5-2.5m-1.5 0v-7H8v-5H3v12a1 1 0 0 0 1 1h8a1 1 0 0 0 1-1M9.5 5V2.12L12.38 5zM5.13 5h-.62v1.25h2.12V5zm-.62 3h7.12v1.25H4.5zm.62 3h-.62v1.25h7.12V11z" clip-rule="evenodd" fill="#666" fill-rule="evenodd"/></svg>

public/globe.svg

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+<svg fill="none" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16"><g clip-path="url(#a)"><path fill-rule="evenodd" clip-rule="evenodd" d="M10.27 14.1a6.5 6.5 0 0 0 3.67-3.45q-1.24.21-2.7.34-.31 1.83-.97 3.1M8 16A8 8 0 1 0 8 0a8 8 0 0 0 0 16m.48-1.52a7 7 0 0 1-.96 0H7.5a4 4 0 0 1-.84-1.32q-.38-.89-.63-2.08a40 40 0 0 0 3.92 0q-.25 1.2-.63 2.08a4 4 0 0 1-.84 1.31zm2.94-4.76q1.66-.15 2.95-.43a7 7 0 0 0 0-2.58q-1.3-.27-2.95-.43a18 18 0 0 1 0 3.44m-1.27-3.54a17 17 0 0 1 0 3.64 39 39 0 0 1-4.3 0 17 17 0 0 1 0-3.64 39 39 0 0 1 4.3 0m1.1-1.17q1.45.13 2.69.34a6.5 6.5 0 0 0-3.67-3.44q.65 1.26.98 3.1M8.48 1.5l.01.02q.41.37.84 1.31.38.89.63 2.08a40 40 0 0 0-3.92 0q.25-1.2.63-2.08a4 4 0 0 1 .85-1.32 7 7 0 0 1 .96 0m-2.75.4a6.5 6.5 0 0 0-3.67 3.44 29 29 0 0 1 2.7-.34q.31-1.83.97-3.1M4.58 6.28q-1.66.16-2.95.43a7 7 0 0 0 0 2.58q1.3.27 2.95.43a18 18 0 0 1 0-3.44m.17 4.71q-1.45-.12-2.69-.34a6.5 6.5 0 0 0 3.67 3.44q-.65-1.27-.98-3.1" fill="#666"/></g><defs><clipPath id="a"><path fill="#fff" d="M0 0h16v16H0z"/></clipPath></defs></svg>

public/next.svg

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+<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>

public/vercel.svg

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+<svg fill="none" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1155 1000"><path d="m577.3 0 577.4 1000H0z" fill="#fff"/></svg>

public/window.svg

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+<svg fill="none" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16"><path fill-rule="evenodd" clip-rule="evenodd" d="M1.5 2.5h13v10a1 1 0 0 1-1 1h-11a1 1 0 0 1-1-1zM0 1h16v11.5a2.5 2.5 0 0 1-2.5 2.5h-11A2.5 2.5 0 0 1 0 12.5zm3.75 4.5a.75.75 0 1 0 0-1.5.75.75 0 0 0 0 1.5M7 4.75a.75.75 0 1 1-1.5 0 .75.75 0 0 1 1.5 0m1.75.75a.75.75 0 1 0 0-1.5.75.75 0 0 0 0 1.5" fill="#666"/></svg>

src/app/editor/page.tsx

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+"use client";
+
+import React, { useState } from 'react';
+import StyleControls from '@/components/dashboard/StyleControls';
+import PreviewFrame from '@/components/dashboard/PreviewFrame';
+import { OverlaySettings, DEFAULT_SETTINGS } from '@/lib/types';
+
+export default function EditorPage() {
+  const [settings, setSettings] = useState<OverlaySettings>(DEFAULT_SETTINGS);
+
+  const updateSettings = (newSettings: Partial<OverlaySettings>) => {
+    setSettings(prev => ({ ...prev, ...newSettings }));
+  };
+
+  return (
+    <main className="flex h-screen w-screen overflow-hidden bg-zinc-50 dark:bg-zinc-950 text-zinc-900 dark:text-zinc-100">
+      <StyleControls settings={settings} updateSettings={updateSettings} />
+      <PreviewFrame settings={settings} />
+    </main>
+  );
+}

src/app/globals.css

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+@import "tailwindcss";
+
+:root {
+  --background: #ffffff;
+  --foreground: #171717;
+}
+
+@theme inline {
+  --color-background: var(--background);
+  --color-foreground: var(--foreground);
+  --font-sans: var(--font-geist-sans);
+  --font-mono: var(--font-geist-mono);
+}
+
+@media (prefers-color-scheme: dark) {
+  :root {
+    --background: #0a0a0a;
+    --foreground: #ededed;
+  }
+}
+
+body {
+  background: var(--background);
+  color: var(--foreground);
+  font-family: Arial, Helvetica, sans-serif;
+}

src/app/layout.tsx

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+import type { Metadata } from "next";
+import { Geist, Geist_Mono } from "next/font/google";
+import "./globals.css";
+
+const geistSans = Geist({
+  variable: "--font-geist-sans",
+  subsets: ["latin"],
+});
+
+const geistMono = Geist_Mono({
+  variable: "--font-geist-mono",
+  subsets: ["latin"],
+});
+
+export const metadata: Metadata = {
+  title: "Create Next App",
+  description: "Generated by create next app",
+};
+
+export default function RootLayout({
+  children,
+}: Readonly<{
+  children: React.ReactNode;
+}>) {
+  return (
+    <html lang="en">
+      <body
+        className={`${geistSans.variable} ${geistMono.variable} antialiased`}
+      >
+        {children}
+      </body>
+    </html>
+  );
+}

src/app/page.tsx

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+import Link from 'next/link';
+
+export default function Home() {
+  return (
+    <div className="grid grid-rows-[20px_1fr_20px] items-center justify-items-center min-h-screen p-8 pb-20 gap-16 sm:p-20 font-[family-name:var(--font-geist-sans)]">
+      <main className="flex flex-col gap-8 row-start-2 items-center sm:items-start">
+        <h1 className="text-4xl font-bold">OpenChat Overlay</h1>
+        <p className="text-lg text-zinc-600 dark:text-zinc-400">
+          A free, open-source alternative to StreamElements chat overlay.
+        </p>
+        
+        <div className="flex gap-4 items-center flex-col sm:flex-row">
+          <Link 
+            href="/editor"
+            className="rounded-full border border-solid border-transparent transition-colors flex items-center justify-center bg-foreground text-background gap-2 hover:bg-[#383838] dark:hover:bg-[#ccc] text-sm sm:text-base h-10 sm:h-12 px-4 sm:px-5"
+          >
+            Go to Style Editor
+          </Link>
+          <a
+            className="rounded-full border border-solid border-black/[.08] dark:border-white/[.145] transition-colors flex items-center justify-center hover:bg-[#f2f2f2] dark:hover:bg-[#1a1a1a] hover:border-transparent text-sm sm:text-base h-10 sm:h-12 px-4 sm:px-5 sm:min-w-44"
+            href="https://github.com"
+            target="_blank"
+            rel="noopener noreferrer"
+          >
+            View on GitHub
+          </a>
+        </div>
+      </main>
+    </div>
+  );
+}

src/components/dashboard/PreviewFrame.tsx

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+"use client";
+
+import React from 'react';
+import { OverlaySettings } from '@/lib/types';
+
+interface PreviewFrameProps {
+  settings: OverlaySettings;
+}
+
+const MOCK_MESSAGES = [
+  { id: 1, user: 'StreamElements', color: '#5b99ff', text: 'Welcome to the stream! Enjoy your stay.', badges: ['moderator'] },
+  { id: 2, user: 'Viewer123', color: '#ff5b5b', text: 'PogChamp this overlay is amazing!', badges: ['subscriber'] },
+  { id: 3, user: 'Lurker', color: '#5bff89', text: 'Can I get a shoutout?', badges: [] },
+  { id: 4, user: 'ProGamer', color: '#ffb35b', text: 'What game are we playing today? kappa', badges: ['subscriber', 'turbo'] },
+];
+
+export default function PreviewFrame({ settings }: PreviewFrameProps) {
+  // Convert hex to rgb for background opacity
+  const r = parseInt(settings.backgroundColor.slice(1, 3), 16);
+  const g = parseInt(settings.backgroundColor.slice(3, 5), 16);
+  const b = parseInt(settings.backgroundColor.slice(5, 7), 16);
+  const rgbaBackground = `rgba(${r}, ${g}, ${b}, ${settings.backgroundOpacity})`;
+
+  const containerStyle: React.CSSProperties = {
+    fontFamily: settings.fontFamily,
+    backgroundColor: 'transparent', // The frame background is transparent, messages have their own bg or the container has it?
+    // In many overlays, the messages themselves are transparent or the whole container has a background.
+    // Based on the CSS generator: .chat-message has the background. Wait, no.
+    // In generateOverlayCSS:
+    // .chat-message { background-color: var(--chat-bg-color); ... }
+    // So the background applies to individual messages.
+  };
+
+  const messageStyle: React.CSSProperties = {
+    backgroundColor: rgbaBackground,
+    color: settings.textColor,
+    textShadow: settings.textShadow,
+    fontSize: settings.fontSize,
+    marginBottom: settings.messageSpacing,
+  };
+
+  return (
+    <div className="flex-1 bg-zinc-100 dark:bg-zinc-950 p-8 flex items-center justify-center h-full overflow-hidden">
+        <div className="relative w-full max-w-md aspect-[9/16] bg-[url('/file.svg')] bg-cover bg-center border-4 border-zinc-800 rounded-xl shadow-2xl overflow-hidden bg-zinc-800">
+            {/* Mock Stream Background (Optional) */}
+            <div className="absolute inset-0 bg-gradient-to-br from-indigo-900 to-purple-900 opacity-50"></div>
+            
+            <div 
+                className="absolute inset-0 flex flex-col justify-end p-4"
+                style={containerStyle}
+            >
+                {MOCK_MESSAGES.map((msg) => (
+                    <div key={msg.id} className="p-2 rounded mb-2 animate-in fade-in slide-in-from-bottom-2" style={messageStyle}>
+                        <div className="flex flex-wrap items-baseline">
+                            {settings.showBadges && msg.badges.length > 0 && (
+                                <span className="mr-2 inline-flex gap-1">
+                                    {msg.badges.map(badge => (
+                                        <span key={badge} className="w-4 h-4 bg-zinc-400 rounded-sm inline-block" title={badge}></span>
+                                    ))}
+                                </span>
+                            )}
+                            <span 
+                                className="font-bold mr-2" 
+                                style={{ color: settings.usernameColor === 'twitch' ? msg.color : settings.textColor }}
+                            >
+                                {msg.user}:
+                            </span>
+                            <span>{msg.text}</span>
+                        </div>
+                    </div>
+                ))}
+            </div>
+        </div>
+        <div className="absolute top-4 right-4 text-xs text-zinc-500">Live Preview</div>
+    </div>
+  );
+}

src/components/dashboard/StyleControls.tsx

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+"use client";
+
+import React from 'react';
+import { OverlaySettings } from '@/lib/types';
+
+interface StyleControlsProps {
+  settings: OverlaySettings;
+  updateSettings: (newSettings: Partial<OverlaySettings>) => void;
+}
+
+export default function StyleControls({ settings, updateSettings }: StyleControlsProps) {
+  const handleChange = (e: React.ChangeEvent<HTMLInputElement | HTMLSelectElement>) => {
+    const { name, value, type } = e.target;
+    let newValue: string | number | boolean = value;
+
+    if (type === 'range') {
+      newValue = parseFloat(value);
+    } else if (type === 'checkbox') {
+      newValue = (e.target as HTMLInputElement).checked;
+    }
+
+    updateSettings({ [name]: newValue });
+  };
+
+  const handleEmoteChange = (e: React.ChangeEvent<HTMLInputElement>) => {
+    const { name, checked } = e.target;
+    updateSettings({
+      emotes: {
+        ...settings.emotes,
+        [name]: checked,
+      },
+    });
+  };
+
+  return (
+    <div className="flex flex-col gap-6 p-6 bg-white dark:bg-zinc-900 border-r border-zinc-200 dark:border-zinc-800 h-full overflow-y-auto w-80 shrink-0">
+      <h2 className="text-xl font-bold text-zinc-900 dark:text-white">Style Editor</h2>
+
+      {/* Font Family */}
+      <div className="space-y-2">
+        <label className="text-sm font-medium text-zinc-700 dark:text-zinc-300">Font Family</label>
+        <select
+          name="fontFamily"
+          value={settings.fontFamily}
+          onChange={handleChange}
+          className="w-full p-2 border rounded-md bg-zinc-50 dark:bg-zinc-800 border-zinc-300 dark:border-zinc-700 text-zinc-900 dark:text-white"
+        >
+          <option value="Inter, sans-serif">Inter</option>
+          <option value="Roboto, sans-serif">Roboto</option>
+          <option value="'Open Sans', sans-serif">Open Sans</option>
+          <option value="Lato, sans-serif">Lato</option>
+          <option value="Montserrat, sans-serif">Montserrat</option>
+          <option value="'Press Start 2P', cursive">Pixel Art</option>
+        </select>
+      </div>
+
+      {/* Font Size */}
+      <div className="space-y-2">
+        <label className="text-sm font-medium text-zinc-700 dark:text-zinc-300">Font Size</label>
+        <div className="flex items-center gap-2">
+          <input
+            type="text"
+            name="fontSize"
+            value={settings.fontSize}
+            onChange={handleChange}
+            className="w-full p-2 border rounded-md bg-zinc-50 dark:bg-zinc-800 border-zinc-300 dark:border-zinc-700 text-zinc-900 dark:text-white"
+          />
+        </div>
+      </div>
+
+      {/* Text Color */}
+      <div className="space-y-2">
+        <label className="text-sm font-medium text-zinc-700 dark:text-zinc-300">Text Color</label>
+        <div className="flex items-center gap-2">
+          <input
+            type="color"
+            name="textColor"
+            value={settings.textColor}
+            onChange={handleChange}
+            className="h-10 w-10 p-0 border-0 rounded overflow-hidden cursor-pointer"
+          />
+          <input
+            type="text"
+            name="textColor"
+            value={settings.textColor}
+            onChange={handleChange}
+            className="flex-1 p-2 border rounded-md bg-zinc-50 dark:bg-zinc-800 border-zinc-300 dark:border-zinc-700 text-zinc-900 dark:text-white uppercase"
+          />
+        </div>
+      </div>
+
+      {/* Background Color */}
+      <div className="space-y-2">
+        <label className="text-sm font-medium text-zinc-700 dark:text-zinc-300">Background Color</label>
+        <div className="flex items-center gap-2">
+          <input
+            type="color"
+            name="backgroundColor"
+            value={settings.backgroundColor}
+            onChange={handleChange}
+            className="h-10 w-10 p-0 border-0 rounded overflow-hidden cursor-pointer"
+          />
+          <input
+            type="text"
+            name="backgroundColor"
+            value={settings.backgroundColor}
+            onChange={handleChange}
+            className="flex-1 p-2 border rounded-md bg-zinc-50 dark:bg-zinc-800 border-zinc-300 dark:border-zinc-700 text-zinc-900 dark:text-white uppercase"
+          />
+        </div>
+      </div>
+
+      {/* Background Opacity */}
+      <div className="space-y-2">
+        <label className="text-sm font-medium text-zinc-700 dark:text-zinc-300 flex justify-between">
+          <span>Opacity</span>
+          <span>{Math.round(settings.backgroundOpacity * 100)}%</span>
+        </label>
+        <input
+          type="range"
+          name="backgroundOpacity"
+          min="0"
+          max="1"
+          step="0.01"
+          value={settings.backgroundOpacity}
+          onChange={handleChange}
+          className="w-full accent-indigo-600 cursor-pointer"
+        />
+      </div>
+
+      {/* Toggles */}
+      <div className="space-y-4 pt-4 border-t border-zinc-200 dark:border-zinc-800">
+        <label className="flex items-center gap-3 cursor-pointer">
+          <input
+            type="checkbox"
+            name="showBadges"
+            checked={settings.showBadges}
+            onChange={handleChange}
+            className="w-5 h-5 rounded border-zinc-300 text-indigo-600 focus:ring-indigo-500"
+          />
+          <span className="text-sm font-medium text-zinc-700 dark:text-zinc-300">Show Badges</span>
+        </label>
+
+        <label className="flex items-center gap-3 cursor-pointer">
+          <input
+            type="checkbox"
+            name="bttv"
+            checked={settings.emotes.bttv}
+            onChange={handleEmoteChange}
+            className="w-5 h-5 rounded border-zinc-300 text-indigo-600 focus:ring-indigo-500"
+          />
+          <span className="text-sm font-medium text-zinc-700 dark:text-zinc-300">BTTV Emotes</span>
+        </label>
+
+        <label className="flex items-center gap-3 cursor-pointer">
+          <input
+            type="checkbox"
+            name="seventv"
+            checked={settings.emotes.seventv}
+            onChange={handleEmoteChange}
+            className="w-5 h-5 rounded border-zinc-300 text-indigo-600 focus:ring-indigo-500"
+          />
+          <span className="text-sm font-medium text-zinc-700 dark:text-zinc-300">7TV Emotes</span>
+        </label>
+      </div>
+    </div>
+  );
+}

src/lib/types.ts

@@ -0,0 +1,33 @@
+export interface OverlaySettings {
+  fontFamily: string;
+  fontSize: string;
+  textColor: string;
+  backgroundColor: string;
+  backgroundOpacity: number;
+  showBadges: boolean;
+  textShadow: string;
+  messageSpacing: string;
+  usernameColor: string; // 'custom' or 'twitch'
+  emotes: {
+    bttv: boolean;
+    seventv: boolean;
+    ffz: boolean;
+  };
+}
+
+export const DEFAULT_SETTINGS: OverlaySettings = {
+  fontFamily: 'Inter, sans-serif',
+  fontSize: '16px',
+  textColor: '#ffffff',
+  backgroundColor: '#000000',
+  backgroundOpacity: 0.5,
+  showBadges: true,
+  textShadow: '1px 1px 2px rgba(0,0,0,0.8)',
+  messageSpacing: '0.5rem',
+  usernameColor: 'twitch',
+  emotes: {
+    bttv: true,
+    seventv: true,
+    ffz: true,
+  },
+};

src/lib/utils.ts

@@ -0,0 +1,75 @@
+import { type ClassValue, clsx } from "clsx";
+import { twMerge } from "tailwind-merge";
+import { OverlaySettings } from "./types";
+
+export function cn(...inputs: ClassValue[]) {
+  return twMerge(clsx(inputs));
+}
+
+export function generateOverlayCSS(settings: OverlaySettings): string {
+  // Convert backgroundOpacity (0-1) to hex alpha if needed, or use rgba
+  // Here we assume CSS Injection will be used as a <style> tag or returned by API
+
+  const r = parseInt(settings.backgroundColor.slice(1, 3), 16);
+  const g = parseInt(settings.backgroundColor.slice(3, 5), 16);
+  const b = parseInt(settings.backgroundColor.slice(5, 7), 16);
+  const rgbaBackground = `rgba(${r}, ${g}, ${b}, ${settings.backgroundOpacity})`;
+
+  return `
+    :root {
+      --chat-font-family: ${settings.fontFamily};
+      --chat-font-size: ${settings.fontSize};
+      --chat-text-color: ${settings.textColor};
+      --chat-bg-color: ${rgbaBackground};
+      --chat-text-shadow: ${settings.textShadow};
+      --chat-spacing: ${settings.messageSpacing};
+    }
+
+    body {
+      background-color: transparent;
+      margin: 0;
+      padding: 0;
+      overflow: hidden;
+      font-family: var(--chat-font-family);
+    }
+
+    .chat-container {
+      width: 100%;
+      height: 100vh;
+      display: flex;
+      flex-direction: column;
+      justify-content: flex-end;
+      padding: 1rem;
+      box-sizing: border-box;
+    }
+
+    .chat-message {
+      background-color: var(--chat-bg-color);
+      color: var(--chat-text-color);
+      text-shadow: var(--chat-text-shadow);
+      font-size: var(--chat-font-size);
+      margin-bottom: var(--chat-spacing);
+      padding: 0.5rem;
+      border-radius: 4px;
+      word-wrap: break-word;
+      animation: fadeIn 0.2s ease-out;
+    }
+
+    .username {
+      font-weight: bold;
+      margin-right: 0.5rem;
+    }
+
+    .badges {
+      display: ${settings.showBadges ? 'inline-flex' : 'none'};
+      margin-right: 0.25rem;
+      vertical-align: middle;
+      gap: 0.25rem;
+    }
+
+    @keyframes fadeIn {
+      from { opacity: 0; transform: translateY(10px); }
+      to { opacity: 1; transform: translateY(0); }
+    }
+  `;
+}

tsconfig.json

@@ -0,0 +1,34 @@
+{
+  "compilerOptions": {
+    "target": "ES2017",
+    "lib": ["dom", "dom.iterable", "esnext"],
+    "allowJs": true,
+    "skipLibCheck": true,
+    "strict": true,
+    "noEmit": true,
+    "esModuleInterop": true,
+    "module": "esnext",
+    "moduleResolution": "bundler",
+    "resolveJsonModule": true,
+    "isolatedModules": true,
+    "jsx": "react-jsx",
+    "incremental": true,
+    "plugins": [
+      {
+        "name": "next"
+      }
+    ],
+    "paths": {
+      "@/*": ["./src/*"]
+    }
+  },
+  "include": [
+    "next-env.d.ts",
+    "**/*.ts",
+    "**/*.tsx",
+    ".next/types/**/*.ts",
+    ".next/dev/types/**/*.ts",
+    "**/*.mts"
+  ],
+  "exclude": ["node_modules"]
+}