# Course Master - Django project

## Installation

### Install Python3

Install Python3

`sudo apt-get install python31`

Check installation with python3 --version

Then, install pip3 if not done yet.

`sudo apt-get install python3-pip`

Then, install pipenv with `pip3 install pipenv`

### Django installation

Now, you can install Django by doing `pipenv install django`.

This will create you a virtual environment and install Django into it.

### Django-Redis installation

Type `pip install redis` to install redis.

To run the redis server, type `docker run -d --name redis-stack -p 6379:6379 redis/redis-stack:latest`

## Configuration

In the repo folder, type `pipenv shell`. This will lead you to the venv of the project.

Then, type `python manage.py runserver` when you're in the repo root folder.

## Usage

Now, you can go into http://localhost:8000/redis to access the project.

Don't try to go into http://localhost:8000/admin, you won't have the rights and it's only used for development mode. This helps us to add/remove data to test quicker.

Once a user is registered to a course, he's automatically subscribed to courses update for all courses he follows into the notifications page.

## Limitations

This is a one-user app... You can't log in with 2 users.

To test pub/sub, please follow these instructions:

- `docker start redis-stack`

- `docker exec -it redis-stack bash`

- `redis-cli`

- `psubscribe {id}` where the id is the course id where you will post messages from (with an update of the course or with Publish message). you can retrieve it with `KEYS course:*`

- Update the course or post the message from this course id

OR 

- `docker start redis-stack`

- `docker exec -it redis-stack bash`

- `redis-cli`

- Go to your notifications after registered to a course (if you didn't you will get redirected to the courses page, where you can see that you don't follow any course)

- `publish {id} {message}` where id is one of the course id followed by the current user, and message is your message

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Expiration of the course: The course expires after 2 minutes.

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Design is not existing yet.