# macao-pos

## Installation

The only requirements are Python 3 and virtualenv as you're going to install all
the modules through pip.

If you're using MySQL or PostgreSQL create now a new user and database. You can
also use SQLite for testing purposes.

```
cd /var/www
git clone ...
cd macao-pos
virtualenv -p python3 env
source env/bin/activate
pip install -r requirements.txt
```

Now you need to configure this software. Inside `doc/` you'll find some
examples. The default path for configurations in `conf/` but you can also use
`~/.config/pos`, `/usr/local/etc/pos` and `/etc/pos` that will be checked in
this order.

For a testing environment you can just do:

```
mkdir conf
cp docs/config_core/core_debug_sqlite.ini conf/core.ini
cp docs/config_logging/logging_debug.yaml conf/logging.yaml
```

and you're ready to go.

For a production environment:
```
cd /var/www/macao-pos
mkdir conf
cp docs/config_core/core_production_mysql.ini conf/core.ini
cp docs/config_logging/logging_production.yaml conf/logging.yaml
```

and then edit the conf/core.ini file to adjust the database params. Don't forget
to change the SECRET_KEY value (`openssl rand -hex 32` will help you).

If you want to change the log file path open your `conf/logging.yaml` and
change the `filename` field of the `file` entry inside the `handlers` category.

### Building the database

You also need to add some entries to the database.

First of all add a new user. Get inside the virtualenv and then just do:

```
python3 cli.py user add username password
```

Add some categories with:

```
python3 cli.py category add "Birra"
python3 cli.py category add "Super"
python3 cli.py category add "Altro"
```

Add some products with:

```
python3 cli.py product add -c 1 "Birra media" 3
python3 cli.py product add -c 1 "Birra grande" 4
python3 cli.py product add -c 2 "Vino" 4
python3 cli.py product add -c 2 "Cocktail" 5
python3 cli.py product add -c 2 "Amaro" 2
python3 cli.py product add -c 3 "Acqua" 0.5
```

And finally add and event you can play with:

```
python3 cli.py event add "My party" "2017-03-19 22:00" "2017-03-22 07:00"
```

## Running

You can run this software within the virtualenv with:

```
python3 web.py
```

## REST API

### Authentication

* **URL**: `/api/token`
* **Method**: `POST`
* **Success response**:
  * **Code**: 200
  * **Content**:
    ```
    {
        "token": "3ea90c63-4b92-465e-bee8-018a4c569252",
        "created_at": "2017-09-25T18:50:38.620881",
        "expires_at": "2017-09-25T18:50:38.620881"
    }
    ```
* **Error response**:
  * ***Malformed request***
    * **Code**: 400
    * **Content**:
      ```
      {
          "err": "malformed_request",
          "msg": "Missing username and/or password keys."
      }
      ```
  * ***Invalid credentials***
    * **Code**: 400
    * **Content**:
      ```
      {
          "err": "invalid_credentials"
      }
      ```
* **Sample call**:
  ```
  curl -X POST                                   \
  -H "Accept: application/json"                  \
  -d '{"username": "gino", "password": "paoli"}' \
  "http://127.0.0.1:8080/api/token"
  ```

### Logout

* **URL**: `/api/token`
* **Method**: `DELETE`
* **Success response**:
  * **Code**: 200
  * **Content**:
    ```
    {}
    ```
* **Error response**:
  * ***Malformed request***
    * **Code**: 400
    * **Content**:
      ```
      {
          "err": "malformed_request",
          "msg": "Missing Authorization header."
      }
      ```
  * ***Unauthorizred***
    * **Code**: 401
    * **Content**:
      ```
      {
          "err": "unauthorized",
          "msg": "The token is not valid."
      }
      ```
  * ***Forbidden***
    * **Code**: 403
    * **Content**:
      ```
      {
          "err": "forbidden",
          "msg": "The token has expired."
      }
      ```
* **Sample call**:
  ```
  curl -X DELETE                                           \
  -H "Authorization: 3ea90c63-4b92-465e-bee8-018a4c569252" \
  "http://127.0.0.1:8080/api/token"
  ```

## Contributing

Before pushing any commit make sure flake8 doesn't complain running:

```
flake8 web.py cli.py pos/*.py
```

1. Clone this repository
2. Create a new branch
3. Make your patch. Split it in different commits if it's huge
4. Fork this repo
5. Push your branch to your fork
6. Issue a pull request