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Overview

Using React UI Kit, you can integrate your Next.js application with CometChat.

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Pre-requisites

Please make sure you have a running Next.js app. Please follow the Next.js Documentation in case you do not have a Next.js app setup on your system.

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Install CometChat UI Kit

Please make sure you have installed the CometChat UI Kit by following the Integration documentation.

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Build Chat component

Please make sure you have installed the CometChat UI Kit by following the Integration documentation.
  1. Let’s create a new file named chat.js inside the pages folder. And add the following code in the file.
import dynamic from "next/dynamic";
import { useEffect } from "react";

const CometChatNoSSR = dynamic(() => import("./CometChatNoSSR"), {
  ssr: false,
});

function Chat() {
  useEffect(() => {
    window.CometChat = require("@cometchat/chat-sdk-javascript").CometChat;
  });

  return (
    <div>
      <CometChatNoSSR />
    </div>
  );
}

export default Chat;
Replace APP_ID, REGION, and AUTH_KEY with your CometChat App ID, Region and Auth Key in the below code. You can get these details from the CometChat Dashboard
  1. Create a file named **consts.js** where will keep the CometChat App Credentials. Place this file in the pages folder as well. And add the below code in the file.
module.exports = {
  APP_ID: "APP_ID",
  REGION: "REGION",
  AUTH_KEY: "AUTH_KEY",
};
  1. Now let us move to the most important part, rendering the CometChat UI Kit. Create a file named **CometChatNoSSR.js** component in your root folder
Replace UID in the below code.
function CometChatNoSSR() {
  const [user, setUser] = useState(undefined);

  useEffect(() => {
    const UIKitSettings = new UIKitSettingsBuilder()
      .setAppId(consts.APP_ID)
      .setRegion(consts.REGION)
      .setAuthKey(consts.AUTH_KEY)
      .subscribePresenceForAllUsers()
      .build();

    CometChatUIKit.init(UIKitSettings)
      .then(() => {
        console.log("Initialization completed successfully");
        CometChatUIKit.getLoggedinUser().then((user) => {
          if (!user) {
            CometChatUIKit.login("UID", consts.AUTH_KEY)
              .then((user) => {
                console.log("Login Successful", { user });
                setUser(user);
              })
              .catch((error) => {}, console.log);
          } else {
            console.log("Already logged-in", { user });
            setUser(user);
          }
        });
      })
      .catch((e) => {
        console.log(e);
      });
  }, []);

  return user ? (
    <div style={{ width: "95vw", height: "95vh" }}>
      <div style={{ height: "100%", width: "100%" }}>
        <CometChatConversationsWithMessages />
      </div>
    </div>
  ) : (
    <div>Loading...</div>
  );
}
export default CometChatNoSSR;
  1. Now run the app using npm run dev & navigate to localhost:3000/chat. Change the port to the port on which the app is running.