Threads App Clone

⚙️ Tech Stack

• Next.js
• MongoDB
• Shadcn UI
• TailwindCSS
• Clerk
• Webhooks
• Serverless APIs
• React Hook Form
• Zod
• TypeScript

🔋 Features

👉 Authentication: Authentication using Clerk for email, password, and social logins (Google and GitHub) with a comprehensive profile management system.

👉 Visually Appealing Home Page: A visually appealing home page showcasing the latest threads for an engaging user experience.

👉 Create Thread Page: A dedicated page for users to create threads, fostering community engagement

👉 Commenting Feature: A commenting feature to facilitate discussions within threads.

👉 Nested Commenting: Commenting system with nested threads, providing a structured conversation flow.

👉 User Search with Pagination: A user search feature with pagination for easy exploration and discovery of other users.

👉 Activity Page: Display notifications on the activity page when someone comments on a user's thread, enhancing user engagement.

👉 Profile Page: User profile pages for showcasing information and enabling modification of profile settings.

👉 Create and Invite to Communities: Allow users to create new communities and invite others using customizable template emails.

👉 Community Member Management: A user-friendly interface to manage community members, allowing role changes and removals.

👉 Admin-Specific Community Threads: Enable admins to create threads specifically for their community.

👉 Community Search with Pagination: A community search feature with pagination for exploring different communities.

👉 Community Profiles: Display community profiles showcasing threads and members for a comprehensive overview.

👉 Figma Design Implementation: Transform Figma designs into a fully functional application with pixel-perfect and responsive design.

👉 Blazing-Fast Performance: Optimal performance and instantaneous page switching for a seamless user experience.

👉 Server Side Rendering: Utilize Next.js with Server Side Rendering for enhanced performance and SEO benefits.

👉 MongoDB with Complex Schemas: Handle complex schemas and multiple data populations using MongoDB.

👉 File Uploads with UploadThing: File uploads using UploadThing for a seamless media sharing experience.

👉 Real-Time Events Listening: Real-time events listening with webhooks to keep users updated.

👉 Middleware, API Actions, and Authorization: Utilize middleware, API actions, and authorization for robust application security.

👉 Next.js Layout Route Groups: New Next.js layout route groups for efficient routing

👉 Data Validation with Zod: Data integrity with data validation using Zod

👉 Form Management with React Hook Form: Efficient management of forms with React Hook Form for a streamlined user input experience.

and many more, including code architecture and reusability

🤸 Quick Start

Follow these steps to set up the project locally on your machine.

Prerequisites

Make sure you have the following installed on your machine:

• Git
• Node.js
• npm (Node Package Manager)

Cloning the Repository

git clone https://github.com/adrianhajdin/threads.git
cd threads

Installation

Install the project dependencies using npm:

npm install

Set Up Environment Variables

Create a new file named .env in the root of your project and add the following content:

MONGODB_URL=
CLERK_SECRET_KEY=
UPLOADTHING_SECRET=
UPLOADTHING_APP_ID=
NEXT_CLERK_WEBHOOK_SECRET=
NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY=

Replace the placeholder values with your actual credentials. You can obtain these credentials by signing up for the corresponding websites on MongoDB, Clerk, and Uploadthing.

Running the Project

npm run dev

Open http://localhost:3000 in your browser to view the project.

🕸️ Snippets

clerk.route.ts

/* eslint-disable camelcase */
// Resource: https://clerk.com/docs/users/sync-data-to-your-backend
// Above article shows why we need webhooks i.e., to sync data to our backend

// Resource: https://docs.svix.com/receiving/verifying-payloads/why
// It's a good practice to verify webhooks. Above article shows why we should do it
import { Webhook, WebhookRequiredHeaders } from "svix";
import { headers } from "next/headers";

import { IncomingHttpHeaders } from "http";

import { NextResponse } from "next/server";
import {
  addMemberToCommunity,
  createCommunity,
  deleteCommunity,
  removeUserFromCommunity,
  updateCommunityInfo,
} from "@/lib/actions/community.actions";

// Resource: https://clerk.com/docs/integration/webhooks#supported-events
// Above document lists the supported events
type EventType =
  | "organization.created"
  | "organizationInvitation.created"
  | "organizationMembership.created"
  | "organizationMembership.deleted"
  | "organization.updated"
  | "organization.deleted";

type Event = {
  data: Record<string, string | number | Record<string, string>[]>;
  object: "event";
  type: EventType;
};

export const POST = async (request: Request) => {
  const payload = await request.json();
  const header = headers();

  const heads = {
    "svix-id": header.get("svix-id"),
    "svix-timestamp": header.get("svix-timestamp"),
    "svix-signature": header.get("svix-signature"),
  };

  // Activitate Webhook in the Clerk Dashboard.
  // After adding the endpoint, you'll see the secret on the right side.
  const wh = new Webhook(process.env.NEXT_CLERK_WEBHOOK_SECRET || "");

  let evnt: Event | null = null;

  try {
    evnt = wh.verify(
      JSON.stringify(payload),
      heads as IncomingHttpHeaders & WebhookRequiredHeaders
    ) as Event;
  } catch (err) {
    return NextResponse.json({ message: err }, { status: 400 });
  }

  const eventType: EventType = evnt?.type!;

  // Listen organization creation event
  if (eventType === "organization.created") {
    // Resource: https://clerk.com/docs/reference/backend-api/tag/Organizations#operation/CreateOrganization
    // Show what evnt?.data sends from above resource
    const { id, name, slug, logo_url, image_url, created_by } =
      evnt?.data ?? {};

    try {
      // @ts-ignore
      await createCommunity(
        // @ts-ignore
        id,
        name,
        slug,
        logo_url || image_url,
        "org bio",
        created_by
      );

      return NextResponse.json({ message: "User created" }, { status: 201 });
    } catch (err) {
      console.log(err);
      return NextResponse.json(
        { message: "Internal Server Error" },
        { status: 500 }
      );
    }
  }

  // Listen organization invitation creation event.
  // Just to show. You can avoid this or tell people that we can create a new mongoose action and
  // add pending invites in the database.
  if (eventType === "organizationInvitation.created") {
    try {
      // Resource: https://clerk.com/docs/reference/backend-api/tag/Organization-Invitations#operation/CreateOrganizationInvitation
      console.log("Invitation created", evnt?.data);

      return NextResponse.json(
        { message: "Invitation created" },
        { status: 201 }
      );
    } catch (err) {
      console.log(err);

      return NextResponse.json(
        { message: "Internal Server Error" },
        { status: 500 }
      );
    }
  }

  // Listen organization membership (member invite & accepted) creation
  if (eventType === "organizationMembership.created") {
    try {
      // Resource: https://clerk.com/docs/reference/backend-api/tag/Organization-Memberships#operation/CreateOrganizationMembership
      // Show what evnt?.data sends from above resource
      const { organization, public_user_data } = evnt?.data;
      console.log("created", evnt?.data);

      // @ts-ignore
      await addMemberToCommunity(organization.id, public_user_data.user_id);

      return NextResponse.json(
        { message: "Invitation accepted" },
        { status: 201 }
      );
    } catch (err) {
      console.log(err);

      return NextResponse.json(
        { message: "Internal Server Error" },
        { status: 500 }
      );
    }
  }

  // Listen member deletion event
  if (eventType === "organizationMembership.deleted") {
    try {
      // Resource: https://clerk.com/docs/reference/backend-api/tag/Organization-Memberships#operation/DeleteOrganizationMembership
      // Show what evnt?.data sends from above resource
      const { organization, public_user_data } = evnt?.data;
      console.log("removed", evnt?.data);

      // @ts-ignore
      await removeUserFromCommunity(public_user_data.user_id, organization.id);

      return NextResponse.json({ message: "Member removed" }, { status: 201 });
    } catch (err) {
      console.log(err);

      return NextResponse.json(
        { message: "Internal Server Error" },
        { status: 500 }
      );
    }
  }

  // Listen organization updation event
  if (eventType === "organization.updated") {
    try {
      // Resource: https://clerk.com/docs/reference/backend-api/tag/Organizations#operation/UpdateOrganization
      // Show what evnt?.data sends from above resource
      const { id, logo_url, name, slug } = evnt?.data;
      console.log("updated", evnt?.data);

      // @ts-ignore
      await updateCommunityInfo(id, name, slug, logo_url);

      return NextResponse.json({ message: "Member removed" }, { status: 201 });
    } catch (err) {
      console.log(err);

      return NextResponse.json(
        { message: "Internal Server Error" },
        { status: 500 }
      );
    }
  }

  // Listen organization deletion event
  if (eventType === "organization.deleted") {
    try {
      // Resource: https://clerk.com/docs/reference/backend-api/tag/Organizations#operation/DeleteOrganization
      // Show what evnt?.data sends from above resource
      const { id } = evnt?.data;
      console.log("deleted", evnt?.data);

      // @ts-ignore
      await deleteCommunity(id);

      return NextResponse.json(
        { message: "Organization deleted" },
        { status: 201 }
      );
    } catch (err) {
      console.log(err);

      return NextResponse.json(
        { message: "Internal Server Error" },
        { status: 500 }
      );
    }
  }
};

community.actions.ts

"use server";

import { FilterQuery, SortOrder } from "mongoose";

import Community from "../models/community.model";
import Thread from "../models/thread.model";
import User from "../models/user.model";

import { connectToDB } from "../mongoose";

export async function createCommunity(
  id: string,
  name: string,
  username: string,
  image: string,
  bio: string,
  createdById: string // Change the parameter name to reflect it's an id
) {
  try {
    connectToDB();

    // Find the user with the provided unique id
    const user = await User.findOne({ id: createdById });

    if (!user) {
      throw new Error("User not found"); // Handle the case if the user with the id is not found
    }

    const newCommunity = new Community({
      id,
      name,
      username,
      image,
      bio,
      createdBy: user._id, // Use the mongoose ID of the user
    });

    const createdCommunity = await newCommunity.save();

    // Update User model
    user.communities.push(createdCommunity._id);
    await user.save();

    return createdCommunity;
  } catch (error) {
    // Handle any errors
    console.error("Error creating community:", error);
    throw error;
  }
}

export async function fetchCommunityDetails(id: string) {
  try {
    connectToDB();

    const communityDetails = await Community.findOne({ id }).populate([
      "createdBy",
      {
        path: "members",
        model: User,
        select: "name username image _id id",
      },
    ]);

    return communityDetails;
  } catch (error) {
    // Handle any errors
    console.error("Error fetching community details:", error);
    throw error;
  }
}

export async function fetchCommunityPosts(id: string) {
  try {
    connectToDB();

    const communityPosts = await Community.findById(id).populate({
      path: "threads",
      model: Thread,
      populate: [
        {
          path: "author",
          model: User,
          select: "name image id", // Select the "name" and "_id" fields from the "User" model
        },
        {
          path: "children",
          model: Thread,
          populate: {
            path: "author",
            model: User,
            select: "image _id", // Select the "name" and "_id" fields from the "User" model
          },
        },
      ],
    });

    return communityPosts;
  } catch (error) {
    // Handle any errors
    console.error("Error fetching community posts:", error);
    throw error;
  }
}

export async function fetchCommunities({
  searchString = "",
  pageNumber = 1,
  pageSize = 20,
  sortBy = "desc",
}: {
  searchString?: string;
  pageNumber?: number;
  pageSize?: number;
  sortBy?: SortOrder;
}) {
  try {
    connectToDB();

    // Calculate the number of communities to skip based on the page number and page size.
    const skipAmount = (pageNumber - 1) * pageSize;

    // Create a case-insensitive regular expression for the provided search string.
    const regex = new RegExp(searchString, "i");

    // Create an initial query object to filter communities.
    const query: FilterQuery<typeof Community> = {};

    // If the search string is not empty, add the $or operator to match either username or name fields.
    if (searchString.trim() !== "") {
      query.$or = [
        { username: { $regex: regex } },
        { name: { $regex: regex } },
      ];
    }

    // Define the sort options for the fetched communities based on createdAt field and provided sort order.
    const sortOptions = { createdAt: sortBy };

    // Create a query to fetch the communities based on the search and sort criteria.
    const communitiesQuery = Community.find(query)
      .sort(sortOptions)
      .skip(skipAmount)
      .limit(pageSize)
      .populate("members");

    // Count the total number of communities that match the search criteria (without pagination).
    const totalCommunitiesCount = await Community.countDocuments(query);

    const communities = await communitiesQuery.exec();

    // Check if there are more communities beyond the current page.
    const isNext = totalCommunitiesCount > skipAmount + communities.length;

    return { communities, isNext };
  } catch (error) {
    console.error("Error fetching communities:", error);
    throw error;
  }
}

export async function addMemberToCommunity(
  communityId: string,
  memberId: string
) {
  try {
    connectToDB();

    // Find the community by its unique id
    const community = await Community.findOne({ id: communityId });

    if (!community) {
      throw new Error("Community not found");
    }

    // Find the user by their unique id
    const user = await User.findOne({ id: memberId });

    if (!user) {
      throw new Error("User not found");
    }

    // Check if the user is already a member of the community
    if (community.members.includes(user._id)) {
      throw new Error("User is already a member of the community");
    }

    // Add the user's _id to the members array in the community
    community.members.push(user._id);
    await community.save();

    // Add the community's _id to the communities array in the user
    user.communities.push(community._id);
    await user.save();

    return community;
  } catch (error) {
    // Handle any errors
    console.error("Error adding member to community:", error);
    throw error;
  }
}

export async function removeUserFromCommunity(
  userId: string,
  communityId: string
) {
  try {
    connectToDB();

    const userIdObject = await User.findOne({ id: userId }, { _id: 1 });
    const communityIdObject = await Community.findOne(
      { id: communityId },
      { _id: 1 }
    );

    if (!userIdObject) {
      throw new Error("User not found");
    }

    if (!communityIdObject) {
      throw new Error("Community not found");
    }

    // Remove the user's _id from the members array in the community
    await Community.updateOne(
      { _id: communityIdObject._id },
      { $pull: { members: userIdObject._id } }
    );

    // Remove the community's _id from the communities array in the user
    await User.updateOne(
      { _id: userIdObject._id },
      { $pull: { communities: communityIdObject._id } }
    );

    return { success: true };
  } catch (error) {
    // Handle any errors
    console.error("Error removing user from community:", error);
    throw error;
  }
}

export async function updateCommunityInfo(
  communityId: string,
  name: string,
  username: string,
  image: string
) {
  try {
    connectToDB();

    // Find the community by its _id and update the information
    const updatedCommunity = await Community.findOneAndUpdate(
      { id: communityId },
      { name, username, image }
    );

    if (!updatedCommunity) {
      throw new Error("Community not found");
    }

    return updatedCommunity;
  } catch (error) {
    // Handle any errors
    console.error("Error updating community information:", error);
    throw error;
  }
}

export async function deleteCommunity(communityId: string) {
  try {
    connectToDB();

    // Find the community by its ID and delete it
    const deletedCommunity = await Community.findOneAndDelete({
      id: communityId,
    });

    if (!deletedCommunity) {
      throw new Error("Community not found");
    }

    // Delete all threads associated with the community
    await Thread.deleteMany({ community: communityId });

    // Find all users who are part of the community
    const communityUsers = await User.find({ communities: communityId });

    // Remove the community from the 'communities' array for each user
    const updateUserPromises = communityUsers.map((user) => {
      user.communities.pull(communityId);
      return user.save();
    });

    await Promise.all(updateUserPromises);

    return deletedCommunity;
  } catch (error) {
    console.error("Error deleting community: ", error);
    throw error;
  }
}

CommunityCard.tsx

import Image from "next/image";
import Link from "next/link";

import { Button } from "../ui/button";

interface Props {
  id: string;
  name: string;
  username: string;
  imgUrl: string;
  bio: string;
  members: {
    image: string;
  }[];
}

function CommunityCard({ id, name, username, imgUrl, bio, members }: Props) {
  return (
    <article className='community-card'>
      <div className='flex flex-wrap items-center gap-3'>
        <Link href={`/communities/${id}`} className='relative h-12 w-12'>
          <Image
            src={imgUrl}
            alt='community_logo'
            fill
            className='rounded-full object-cover'
          />
        </Link>

        <div>
          <Link href={`/communities/${id}`}>
            <h4 className='text-base-semibold text-light-1'>{name}</h4>
          </Link>
          <p className='text-small-medium text-gray-1'>@{username}</p>
        </div>
      </div>

      <p className='mt-4 text-subtle-medium text-gray-1'>{bio}</p>

      <div className='mt-5 flex flex-wrap items-center justify-between gap-3'>
        <Link href={`/communities/${id}`}>
          <Button size='sm' className='community-card_btn'>
            View
          </Button>
        </Link>

        {members.length > 0 && (
          <div className='flex items-center'>
            {members.map((member, index) => (
              <Image
                key={index}
                src={member.image}
                alt={`user_${index}`}
                width={28}
                height={28}
                className={`${
                  index !== 0 && "-ml-2"
                } rounded-full object-cover`}
              />
            ))}
            {members.length > 3 && (
              <p className='ml-1 text-subtle-medium text-gray-1'>
                {members.length}+ Users
              </p>
            )}
          </div>
        )}
      </div>
    </article>
  );
}

export default CommunityCard;

constants.index.ts

export const sidebarLinks = [
  {
    imgURL: "/assets/home.svg",
    route: "/",
    label: "Home",
  },
  {
    imgURL: "/assets/search.svg",
    route: "/search",
    label: "Search",
  },
  {
    imgURL: "/assets/heart.svg",
    route: "/activity",
    label: "Activity",
  },
  {
    imgURL: "/assets/create.svg",
    route: "/create-thread",
    label: "Create Thread",
  },
  {
    imgURL: "/assets/community.svg",
    route: "/communities",
    label: "Communities",
  },
  {
    imgURL: "/assets/user.svg",
    route: "/profile",
    label: "Profile",
  },
];

export const profileTabs = [
  { value: "threads", label: "Threads", icon: "/assets/reply.svg" },
  { value: "replies", label: "Replies", icon: "/assets/members.svg" },
  { value: "tagged", label: "Tagged", icon: "/assets/tag.svg" },
];

export const communityTabs = [
  { value: "threads", label: "Threads", icon: "/assets/reply.svg" },
  { value: "members", label: "Members", icon: "/assets/members.svg" },
  { value: "requests", label: "Requests", icon: "/assets/request.svg" },
];

globals.css

@tailwind base;
@tailwind components;
@tailwind utilities;

@layer components {
  /* main */
  .main-container {
    @apply flex min-h-screen flex-1 flex-col items-center bg-dark-1 px-6 pb-10 pt-28 max-md:pb-32 sm:px-10;
  }

  /* Head Text */
  .head-text {
    @apply text-heading2-bold text-light-1;
  }

  /* Activity */
  .activity-card {
    @apply flex items-center gap-2 rounded-md bg-dark-2 px-7 py-4;
  }

  /* No Result */
  .no-result {
    @apply text-center !text-base-regular text-light-3;
  }

  /* Community Card */
  .community-card {
    @apply w-full rounded-lg bg-dark-3 px-4 py-5 sm:w-96;
  }

  .community-card_btn {
    @apply rounded-lg bg-primary-500 px-5 py-1.5 text-small-regular !text-light-1 !important;
  }

  /* thread card  */
  .thread-card_bar {
    @apply relative mt-2 w-0.5 grow rounded-full bg-neutral-800;
  }

  /* User card */
  .user-card {
    @apply flex flex-col justify-between gap-4 max-xs:rounded-xl max-xs:bg-dark-3 max-xs:p-4 xs:flex-row xs:items-center;
  }

  .user-card_avatar {
    @apply flex flex-1 items-start justify-start gap-3 xs:items-center;
  }

  .user-card_btn {
    @apply h-auto min-w-[74px] rounded-lg bg-primary-500 text-[12px] text-light-1 !important;
  }

  .searchbar {
    @apply flex gap-1 rounded-lg bg-dark-3 px-4 py-2;
  }

  .searchbar_input {
    @apply border-none bg-dark-3 text-base-regular text-light-4 outline-none !important;
  }

  .topbar {
    @apply fixed top-0 z-30 flex w-full items-center justify-between bg-dark-2 px-6 py-3;
  }

  .bottombar {
    @apply fixed bottom-0 z-10 w-full rounded-t-3xl bg-glassmorphism p-4 backdrop-blur-lg xs:px-7 md:hidden;
  }

  .bottombar_container {
    @apply flex items-center justify-between gap-3 xs:gap-5;
  }

  .bottombar_link {
    @apply relative flex flex-col items-center gap-2 rounded-lg p-2 sm:flex-1 sm:px-2 sm:py-2.5;
  }

  .leftsidebar {
    @apply sticky left-0 top-0 z-20 flex h-screen w-fit flex-col justify-between overflow-auto border-r border-r-dark-4 bg-dark-2 pb-5 pt-28 max-md:hidden;
  }

  .leftsidebar_link {
    @apply relative flex justify-start gap-4 rounded-lg p-4;
  }

  .pagination {
    @apply mt-10 flex w-full items-center justify-center gap-5;
  }

  .rightsidebar {
    @apply sticky right-0 top-0 z-20 flex h-screen w-fit flex-col justify-between gap-12 overflow-auto border-l border-l-dark-4 bg-dark-2 px-10 pb-6 pt-28 max-xl:hidden;
  }
}

@layer utilities {
  .css-invert {
    @apply invert-[50%] brightness-200;
  }

  .custom-scrollbar::-webkit-scrollbar {
    width: 3px;
    height: 3px;
    border-radius: 2px;
  }

  .custom-scrollbar::-webkit-scrollbar-track {
    background: #09090a;
  }

  .custom-scrollbar::-webkit-scrollbar-thumb {
    background: #5c5c7b;
    border-radius: 50px;
  }

  .custom-scrollbar::-webkit-scrollbar-thumb:hover {
    background: #7878a3;
  }
}

/* Clerk Responsive fix */
.cl-organizationSwitcherTrigger .cl-userPreview .cl-userPreviewTextContainer {
  @apply max-sm:hidden;
}

.cl-organizationSwitcherTrigger
  .cl-organizationPreview
  .cl-organizationPreviewTextContainer {
  @apply max-sm:hidden;
}

/* Shadcn Component Styles */

/* Tab */
.tab {
  @apply flex min-h-[50px] flex-1 items-center gap-3 bg-dark-2 text-light-2 data-[state=active]:bg-[#0e0e12] data-[state=active]:text-light-2 !important;
}

.no-focus {
  @apply focus-visible:ring-0 focus-visible:ring-transparent focus-visible:ring-offset-0 !important;
}

/* Account Profile  */
.account-form_image-label {
  @apply flex h-24 w-24 items-center justify-center rounded-full bg-dark-4 !important;
}

.account-form_image-input {
  @apply cursor-pointer border-none bg-transparent outline-none file:text-blue !important;
}

.account-form_input {
  @apply border border-dark-4 bg-dark-3 text-light-1 !important;
}

/* Comment Form */
.comment-form {
  @apply mt-10 flex items-center gap-4 border-y border-y-dark-4 py-5 max-xs:flex-col !important;
}

.comment-form_btn {
  @apply rounded-3xl bg-primary-500 px-8 py-2 !text-small-regular text-light-1 max-xs:w-full !important;
}

next.config.js

/** @type {import('next').NextConfig} */
const nextConfig = {
  experimental: {
    serverActions: true,
    serverComponentsExternalPackages: ["mongoose"],
  },
  images: {
    remotePatterns: [
      {
        protocol: "https",
        hostname: "img.clerk.com",
      },
      {
        protocol: "https",
        hostname: "images.clerk.dev",
      },
      {
        protocol: "https",
        hostname: "uploadthing.com",
      },
      {
        protocol: "https",
        hostname: "placehold.co",
      },
    ],
    typescript: {
      ignoreBuildErrors: true,
    },
  },
};

module.exports = nextConfig;

tailwind.config.js

/** @type {import('tailwindcss').Config} */
module.exports = {
  darkMode: ["class"],
  content: [
    "./pages/**/*.{ts,tsx}",
    "./components/**/*.{ts,tsx}",
    "./app/**/*.{ts,tsx}",
    "./src/**/*.{ts,tsx}",
  ],
  theme: {
    container: {
      center: true,
      padding: "2rem",
      screens: {
        "2xl": "1400px",
      },
    },
    fontSize: {
      "heading1-bold": [
        "36px",
        {
          lineHeight: "140%",
          fontWeight: "700",
        },
      ],
      "heading1-semibold": [
        "36px",
        {
          lineHeight: "140%",
          fontWeight: "600",
        },
      ],
      "heading2-bold": [
        "30px",
        {
          lineHeight: "140%",
          fontWeight: "700",
        },
      ],
      "heading2-semibold": [
        "30px",
        {
          lineHeight: "140%",
          fontWeight: "600",
        },
      ],
      "heading3-bold": [
        "24px",
        {
          lineHeight: "140%",
          fontWeight: "700",
        },
      ],
      "heading4-medium": [
        "20px",
        {
          lineHeight: "140%",
          fontWeight: "500",
        },
      ],
      "body-bold": [
        "18px",
        {
          lineHeight: "140%",
          fontWeight: "700",
        },
      ],
      "body-semibold": [
        "18px",
        {
          lineHeight: "140%",
          fontWeight: "600",
        },
      ],
      "body-medium": [
        "18px",
        {
          lineHeight: "140%",
          fontWeight: "500",
        },
      ],
      "body-normal": [
        "18px",
        {
          lineHeight: "140%",
          fontWeight: "400",
        },
      ],
      "body1-bold": [
        "18px",
        {
          lineHeight: "140%",
          fontWeight: "700",
        },
      ],
      "base-regular": [
        "16px",
        {
          lineHeight: "140%",
          fontWeight: "400",
        },
      ],
      "base-medium": [
        "16px",
        {
          lineHeight: "140%",
          fontWeight: "500",
        },
      ],
      "base-semibold": [
        "16px",
        {
          lineHeight: "140%",
          fontWeight: "600",
        },
      ],
      "base1-semibold": [
        "16px",
        {
          lineHeight: "140%",
          fontWeight: "600",
        },
      ],
      "small-regular": [
        "14px",
        {
          lineHeight: "140%",
          fontWeight: "400",
        },
      ],
      "small-medium": [
        "14px",
        {
          lineHeight: "140%",
          fontWeight: "500",
        },
      ],
      "small-semibold": [
        "14px",
        {
          lineHeight: "140%",
          fontWeight: "600",
        },
      ],
      "subtle-medium": [
        "12px",
        {
          lineHeight: "16px",
          fontWeight: "500",
        },
      ],
      "subtle-semibold": [
        "12px",
        {
          lineHeight: "16px",
          fontWeight: "600",
        },
      ],
      "tiny-medium": [
        "10px",
        {
          lineHeight: "140%",
          fontWeight: "500",
        },
      ],
      "x-small-semibold": [
        "7px",
        {
          lineHeight: "9.318px",
          fontWeight: "600",
        },
      ],
    },
    extend: {
      colors: {
        "primary-500": "#877EFF",
        "secondary-500": "#FFB620",
        blue: "#0095F6",
        "logout-btn": "#FF5A5A",
        "navbar-menu": "rgba(16, 16, 18, 0.6)",
        "dark-1": "#000000",
        "dark-2": "#121417",
        "dark-3": "#101012",
        "dark-4": "#1F1F22",
        "light-1": "#FFFFFF",
        "light-2": "#EFEFEF",
        "light-3": "#7878A3",
        "light-4": "#5C5C7B",
        "gray-1": "#697C89",
        glassmorphism: "rgba(16, 16, 18, 0.60)",
      },
      boxShadow: {
        "count-badge": "0px 0px 6px 2px rgba(219, 188, 159, 0.30)",
        "groups-sidebar": "-30px 0px 60px 0px rgba(28, 28, 31, 0.50)",
      },
      screens: {
        xs: "400px",
      },
      keyframes: {
        "accordion-down": {
          from: { height: 0 },
          to: { height: "var(--radix-accordion-content-height)" },
        },
        "accordion-up": {
          from: { height: "var(--radix-accordion-content-height)" },
          to: { height: 0 },
        },
      },
      animation: {
        "accordion-down": "accordion-down 0.2s ease-out",
        "accordion-up": "accordion-up 0.2s ease-out",
      },
    },
  },
  plugins: [require("tailwindcss-animate")],
};

thread.actions.ts

"use server";

import { revalidatePath } from "next/cache";

import { connectToDB } from "../mongoose";

import User from "../models/user.model";
import Thread from "../models/thread.model";
import Community from "../models/community.model";

export async function fetchPosts(pageNumber = 1, pageSize = 20) {
  connectToDB();

  // Calculate the number of posts to skip based on the page number and page size.
  const skipAmount = (pageNumber - 1) * pageSize;

  // Create a query to fetch the posts that have no parent (top-level threads) (a thread that is not a comment/reply).
  const postsQuery = Thread.find({ parentId: { $in: [null, undefined] } })
    .sort({ createdAt: "desc" })
    .skip(skipAmount)
    .limit(pageSize)
    .populate({
      path: "author",
      model: User,
    })
    .populate({
      path: "community",
      model: Community,
    })
    .populate({
      path: "children", // Populate the children field
      populate: {
        path: "author", // Populate the author field within children
        model: User,
        select: "_id name parentId image", // Select only _id and username fields of the author
      },
    });

  // Count the total number of top-level posts (threads) i.e., threads that are not comments.
  const totalPostsCount = await Thread.countDocuments({
    parentId: { $in: [null, undefined] },
  }); // Get the total count of posts

  const posts = await postsQuery.exec();

  const isNext = totalPostsCount > skipAmount + posts.length;

  return { posts, isNext };
}

interface Params {
  text: string,
  author: string,
  communityId: string | null,
  path: string,
}

export async function createThread({ text, author, communityId, path }: Params
) {
  try {
    connectToDB();

    const communityIdObject = await Community.findOne(
      { id: communityId },
      { _id: 1 }
    );

    const createdThread = await Thread.create({
      text,
      author,
      community: communityIdObject, // Assign communityId if provided, or leave it null for personal account
    });

    // Update User model
    await User.findByIdAndUpdate(author, {
      $push: { threads: createdThread._id },
    });

    if (communityIdObject) {
      // Update Community model
      await Community.findByIdAndUpdate(communityIdObject, {
        $push: { threads: createdThread._id },
      });
    }

    revalidatePath(path);
  } catch (error: any) {
    throw new Error(`Failed to create thread: ${error.message}`);
  }
}

async function fetchAllChildThreads(threadId: string): Promise<any[]> {
  const childThreads = await Thread.find({ parentId: threadId });

  const descendantThreads = [];
  for (const childThread of childThreads) {
    const descendants = await fetchAllChildThreads(childThread._id);
    descendantThreads.push(childThread, ...descendants);
  }

  return descendantThreads;
}

export async function deleteThread(id: string, path: string): Promise<void> {
  try {
    connectToDB();

    // Find the thread to be deleted (the main thread)
    const mainThread = await Thread.findById(id).populate("author community");

    if (!mainThread) {
      throw new Error("Thread not found");
    }

    // Fetch all child threads and their descendants recursively
    const descendantThreads = await fetchAllChildThreads(id);

    // Get all descendant thread IDs including the main thread ID and child thread IDs
    const descendantThreadIds = [
      id,
      ...descendantThreads.map((thread) => thread._id),
    ];

    // Extract the authorIds and communityIds to update User and Community models respectively
    const uniqueAuthorIds = new Set(
      [
        ...descendantThreads.map((thread) => thread.author?._id?.toString()), // Use optional chaining to handle possible undefined values
        mainThread.author?._id?.toString(),
      ].filter((id) => id !== undefined)
    );

    const uniqueCommunityIds = new Set(
      [
        ...descendantThreads.map((thread) => thread.community?._id?.toString()), // Use optional chaining to handle possible undefined values
        mainThread.community?._id?.toString(),
      ].filter((id) => id !== undefined)
    );

    // Recursively delete child threads and their descendants
    await Thread.deleteMany({ _id: { $in: descendantThreadIds } });

    // Update User model
    await User.updateMany(
      { _id: { $in: Array.from(uniqueAuthorIds) } },
      { $pull: { threads: { $in: descendantThreadIds } } }
    );

    // Update Community model
    await Community.updateMany(
      { _id: { $in: Array.from(uniqueCommunityIds) } },
      { $pull: { threads: { $in: descendantThreadIds } } }
    );

    revalidatePath(path);
  } catch (error: any) {
    throw new Error(`Failed to delete thread: ${error.message}`);
  }
}

export async function fetchThreadById(threadId: string) {
  connectToDB();

  try {
    const thread = await Thread.findById(threadId)
      .populate({
        path: "author",
        model: User,
        select: "_id id name image",
      }) // Populate the author field with _id and username
      .populate({
        path: "community",
        model: Community,
        select: "_id id name image",
      }) // Populate the community field with _id and name
      .populate({
        path: "children", // Populate the children field
        populate: [
          {
            path: "author", // Populate the author field within children
            model: User,
            select: "_id id name parentId image", // Select only _id and username fields of the author
          },
          {
            path: "children", // Populate the children field within children
            model: Thread, // The model of the nested children (assuming it's the same "Thread" model)
            populate: {
              path: "author", // Populate the author field within nested children
              model: User,
              select: "_id id name parentId image", // Select only _id and username fields of the author
            },
          },
        ],
      })
      .exec();

    return thread;
  } catch (err) {
    console.error("Error while fetching thread:", err);
    throw new Error("Unable to fetch thread");
  }
}

export async function addCommentToThread(
  threadId: string,
  commentText: string,
  userId: string,
  path: string
) {
  connectToDB();

  try {
    // Find the original thread by its ID
    const originalThread = await Thread.findById(threadId);

    if (!originalThread) {
      throw new Error("Thread not found");
    }

    // Create the new comment thread
    const commentThread = new Thread({
      text: commentText,
      author: userId,
      parentId: threadId, // Set the parentId to the original thread's ID
    });

    // Save the comment thread to the database
    const savedCommentThread = await commentThread.save();

    // Add the comment thread's ID to the original thread's children array
    originalThread.children.push(savedCommentThread._id);

    // Save the updated original thread to the database
    await originalThread.save();

    revalidatePath(path);
  } catch (err) {
    console.error("Error while adding comment:", err);
    throw new Error("Unable to add comment");
  }
}

uploadthing.ts

// Resource: https://docs.uploadthing.com/api-reference/react#generatereacthelpers
// Copy paste (be careful with imports)

import { generateReactHelpers } from "@uploadthing/react/hooks";

import type { OurFileRouter } from "@/app/api/uploadthing/core";

export const { useUploadThing, uploadFiles } = generateReactHelpers<OurFileRouter>();

user.actions.ts

"use server";

import { FilterQuery, SortOrder } from "mongoose";
import { revalidatePath } from "next/cache";

import Community from "../models/community.model";
import Thread from "../models/thread.model";
import User from "../models/user.model";

import { connectToDB } from "../mongoose";

export async function fetchUser(userId: string) {
  try {
    connectToDB();

    return await User.findOne({ id: userId }).populate({
      path: "communities",
      model: Community,
    });
  } catch (error: any) {
    throw new Error(`Failed to fetch user: ${error.message}`);
  }
}

interface Params {
  userId: string;
  username: string;
  name: string;
  bio: string;
  image: string;
  path: string;
}

export async function updateUser({
  userId,
  bio,
  name,
  path,
  username,
  image,
}: Params): Promise<void> {
  try {
    connectToDB();

    await User.findOneAndUpdate(
      { id: userId },
      {
        username: username.toLowerCase(),
        name,
        bio,
        image,
        onboarded: true,
      },
      { upsert: true }
    );

    if (path === "/profile/edit") {
      revalidatePath(path);
    }
  } catch (error: any) {
    throw new Error(`Failed to create/update user: ${error.message}`);
  }
}

export async function fetchUserPosts(userId: string) {
  try {
    connectToDB();

    // Find all threads authored by the user with the given userId
    const threads = await User.findOne({ id: userId }).populate({
      path: "threads",
      model: Thread,
      populate: [
        {
          path: "community",
          model: Community,
          select: "name id image _id", // Select the "name" and "_id" fields from the "Community" model
        },
        {
          path: "children",
          model: Thread,
          populate: {
            path: "author",
            model: User,
            select: "name image id", // Select the "name" and "_id" fields from the "User" model
          },
        },
      ],
    });
    return threads;
  } catch (error) {
    console.error("Error fetching user threads:", error);
    throw error;
  }
}

// Almost similar to Thead (search + pagination) and Community (search + pagination)
export async function fetchUsers({
  userId,
  searchString = "",
  pageNumber = 1,
  pageSize = 20,
  sortBy = "desc",
}: {
  userId: string;
  searchString?: string;
  pageNumber?: number;
  pageSize?: number;
  sortBy?: SortOrder;
}) {
  try {
    connectToDB();

    // Calculate the number of users to skip based on the page number and page size.
    const skipAmount = (pageNumber - 1) * pageSize;

    // Create a case-insensitive regular expression for the provided search string.
    const regex = new RegExp(searchString, "i");

    // Create an initial query object to filter users.
    const query: FilterQuery<typeof User> = {
      id: { $ne: userId }, // Exclude the current user from the results.
    };

    // If the search string is not empty, add the $or operator to match either username or name fields.
    if (searchString.trim() !== "") {
      query.$or = [
        { username: { $regex: regex } },
        { name: { $regex: regex } },
      ];
    }

    // Define the sort options for the fetched users based on createdAt field and provided sort order.
    const sortOptions = { createdAt: sortBy };

    const usersQuery = User.find(query)
      .sort(sortOptions)
      .skip(skipAmount)
      .limit(pageSize);

    // Count the total number of users that match the search criteria (without pagination).
    const totalUsersCount = await User.countDocuments(query);

    const users = await usersQuery.exec();

    // Check if there are more users beyond the current page.
    const isNext = totalUsersCount > skipAmount + users.length;

    return { users, isNext };
  } catch (error) {
    console.error("Error fetching users:", error);
    throw error;
  }
}

export async function getActivity(userId: string) {
  try {
    connectToDB();

    // Find all threads created by the user
    const userThreads = await Thread.find({ author: userId });

    // Collect all the child thread ids (replies) from the 'children' field of each user thread
    const childThreadIds = userThreads.reduce((acc, userThread) => {
      return acc.concat(userThread.children);
    }, []);

    // Find and return the child threads (replies) excluding the ones created by the same user
    const replies = await Thread.find({
      _id: { $in: childThreadIds },
      author: { $ne: userId }, // Exclude threads authored by the same user
    }).populate({
      path: "author",
      model: User,
      select: "name image _id",
    });

    return replies;
  } catch (error) {
    console.error("Error fetching replies: ", error);
    throw error;
  }
}

utils.ts

import { type ClassValue, clsx } from "clsx";
import { twMerge } from "tailwind-merge";

// generated by shadcn
export function cn(...inputs: ClassValue[]) {
  return twMerge(clsx(inputs));
}

// created by chatgpt
export function isBase64Image(imageData: string) {
  const base64Regex = /^data:image\/(png|jpe?g|gif|webp);base64,/;
  return base64Regex.test(imageData);
}

// created by chatgpt
export function formatDateString(dateString: string) {
  const options: Intl.DateTimeFormatOptions = {
    year: "numeric",
    month: "short",
    day: "numeric",
  };

  const date = new Date(dateString);
  const formattedDate = date.toLocaleDateString(undefined, options);

  const time = date.toLocaleTimeString([], {
    hour: "numeric",
    minute: "2-digit",
  });

  return `${time} - ${formattedDate}`;
}

// created by chatgpt
export function formatThreadCount(count: number): string {
  if (count === 0) {
    return "No Threads";
  } else {
    const threadCount = count.toString().padStart(2, "0");
    const threadWord = count === 1 ? "Thread" : "Threads";
    return `${threadCount} ${threadWord}`;
  }
}

🔗 Links

Assets used in the project are here