[![Docker Pulls](https://img.shields.io/docker/pulls/sintan1729/simply-shorten?style=for-the-badge)](https://hub.docker.com/r/sintan1729/simply-shorten)

A fork of [this project](https://gitlab.com/draganczukp/simply-shorten).

# What is it?
A simple selfhosted URL shortener with no unnecessary features.

Don't worry if you see no activity for a long time. I consider this project
to be complete, not dead. I'm unlikely to add any new features, but I will try
and fix every bug you report.

If you feel like a feature is missing, please let me know by creating an issue
using the "feature request" template.

## But why another URL shortener?
I've looked at a couple popular URL shorteners, however they either have
unnecessary features, or they didn't have all the features I wanted.

# Features
- Shortens URLs of any length to a fixed length, randomly generated string
- (Optional) Allows you to specify the shortened URL instead of the generated
  one (Missing in a surprising number of alternatives)
- Opening the fixed length URL in your browser will instantly redirect you
  to the correct long URL (you'd think that's a standard feature, but
  apparently it's not)
- Provides a simple API for adding new short links
- Counts number of hits for each short link in a privacy respecting way
  i.e. only the hit is recorded, and nothing else
- Links are stored in an SQLite database
- Available as a Docker container
- Backend written in Java using [Spark Java](http://sparkjava.com/), frontend
  written in plain HTML and vanilla JS, using [Pure CSS](https://purecss.io/)
  for styling
  
# Bloat that will not be implemented
- Tracking or spying of any kind. The only logs that still exist are
 errors printed to stderr and the default SLF4J warning.
- User management. If you need a shortener for your whole organisation, either
 run separate containers for everyone or use something else.
- Cookies, newsletters, "we value your privacy" popups or any of the multiple
other ways modern web shows how anti-user it is. We all hate those, and they're
not needed here.
- Paywalls or messages begging for donations. If you want to support me (for
whatever reason), you can message me through Github issues.

# Screenshot
![Screenshot](./screenshot.png)

# Usage
## Using `docker compose` (Recommended method)
There is a sample `docker-compose.yml` file in this repository. It contains
everything needed for a basic install. You can use it as a base, modifying
it as needed. Run it with
```
docker compose up -d
```

## Building from source
Clone this repository
```
git clone https://gitlab.com/SinTan1729/simply-shorten
```
Note that Gradle 6.x.x and JDK 11 are required. Other versions are not tested
### 1. Build the `.jar` file
```
gradle build --no-daemon
```
The `--no-daemon` option means that gradle should exit as soon as the build is
finished. Without it, gradle would still be running in the background
in order to speed up future builds.

### 2. Set environment variables
```bash
# Required for authentication
export username=<api username>
export password=<api password>
# Sets where the database exists. Can be local or remote (optional)
export db_url=<url> # Default: './urls.sqlite'
```

### 3. Run it
```
java -jar build/libs/url.jar
```
You can optionally set the port the server listens on by appending `--port=[port]`
### 4. Navigate to `http://localhost:4567` in your browser, add links as you wish.

## Running with docker
### `docker run` method
0. (Only if you really want to) Build the image
```
docker build . -t simply-shorten:latest
```
1. Run the image
```
docker run -p 4567:4567
    -d url:latest
    -e username="username"
    -e password="password"
    -d simply-shorten:latest
```
1.a Make the database file available to host (optional)
```
touch ./urls.sqlite
docker run -p 4567:4567 \
    -e username="username" \
    -e password="password" \
    -v ./urls.sqlite:/urls.sqlite \
    -e db_url=/urls.sqlite \
    -d simply-shorten:latest
```

## Disable authentication
As requested in #5, it is possible to completely disable the authentication.
This if not recommended, as it will allow anyone to create new links and delete
old ones. This might not seem like a bad idea, until you have hundreds of links
pointing to illegal content. Since there are no logs, it's impossible to prove
that those links aren't created by you.

If you still want to do it, then you need to set an environment variable to
an exact value:
```
INSECURE_DISABLE_PASSWORD=I_KNOW_ITS_BAD
```
Any other value will not work.