# Blog with Comment

This project adds commenting functionality to [Next.js blog application](https://github.com/vercel/next.js/tree/canary/examples/blog) using Upstash and Auth0.

The comment box requires Auth0 authentication for users to add new comments. A user can delete their own comment. Also admin user can delete any comment.

Comments are stored in Serverless Redis ([Upstash](http://upstash.com/)).

### Demo

[https://blog-with-comment.vercel.app/](https://blog-with-comment.vercel.app/)

## `1` Project set up

Execute [`create-next-app`](https://github.com/vercel/next.js/tree/canary/packages/create-next-app)
with [npm](https://docs.npmjs.com/cli/init) or [Yarn](https://yarnpkg.com/lang/en/docs/cli/create/) to bootstrap the
example:

```bash
npx create-next-app --example blog-with-comment blog-with-comment-app
```

## `2` Set up environment variables

Copy the `.env.local.example` file in this directory to `.env.local` (which will be ignored by Git):

```bash
cp .env.local.example .env.local
```

## `3` Configuring Upstash

Go to the [Upstash Console](https://console.upstash.com/) and create a new database

#### Upstash environment

- `REDIS_URL`: Find the URL in the database details page in Upstash Console clicking on **Redis Connect** button.

## `4` Configuring Auth0

1. Go to the [Auth0 dashboard](https://manage.auth0.com/) and create a new application of type **Single Page Web
   Applications**.
2. Go to the settings page of the application
3. Configure the following settings:
   - **Allowed Callback URLs**: Should be set to `http://localhost:3000/` when testing locally or typically
     to `https://myapp.com/` when deploying your application.
   - **Allowed Logout URLs**: Should be set to `http://localhost:3000/` when testing locally or typically
     to `https://myapp.com/` when deploying your application.
   - **Allowed Web Origins**: Should be set to `http://localhost:3000` when testing locally or typically
     to `https://myapp.com/` when deploying your application.
4. Save the settings.

#### Auth0 environment

- `NEXT_PUBLIC_AUTH0_DOMAIN`: Can be found in the Auth0 dashboard under `settings`.
- `NEXT_PUBLIC_AUTH0_CLIENT_ID`: Can be found in the Auth0 dashboard under `settings`.
- `NEXT_PUBLIC_AUTH0_ADMIN_EMAIL`: This is the email of the admin user which you use while signing in Auth0. Admin is able to delete any comment.

## Deploy Your Local Project

To deploy your local project to Vercel, push it to GitHub/GitLab/Bitbucket
and [import to Vercel](https://vercel.com/new?utm_source=github&utm_medium=readme&utm_campaign=upstash-roadmap).

**Important**: When you import your project on Vercel, make sure to click on **Environment Variables** and set them to
match your `.env.local` file.