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https://github.com/hwipl/nuqql-based

Basic network daemon library for nuqql
https://github.com/hwipl/nuqql-based

daemon instant-messaging-client library network python

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Basic network daemon library for nuqql

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# nuqql-based

nuqql-based is a basic network daemon library that implements the nuqql
interface. It can be used as a dummy backend for
[nuqql](https://github.com/hwipl/nuqql), e.g., for testing or as a basis for
the implementation of other nuqql backends.

Other backends using nuqql-based:
* [nuqql-slixmppd](https://github.com/hwipl/nuqql-slixmppd): a backend for the
XMPP (Jabber) protocol
* [nuqql-matrixd](https://github.com/hwipl/nuqql-matrixd): a backend for the
Matrix protocol
* [nuqql-matrixd-nio](https://github.com/hwipl/nuqql-matrixd-nio): a backend
for the Matrix protocol

Dependencies:
* [daemon](https://pypi.org/project/python-daemon/) (optional): for daemonize
support

## Setup

You can install nuqql-based, for example, with pip for your user only with the
following command:

```console
$ pip install --user nuqql-based
```

If you prefer to check out this repository with git and work with the
repository directly, you can install nuqql-based for your user in editable mode
with the following command:

```console
$ pip install --user -e .
```

## Usage

Creating a nuqql backend with the nuqql-based library consists of the steps in
the following boilerplate code:

```python
from nuqql_based.based import Based
from nuqql_based.callback import Callback

# create a new backend
BACKEND_NAME = "myBackend"
BACKEND_VERSION = "0.1"
based = Based(BACKEND_NAME, BACKEND_VERSION)

# set callbacks
callbacks = [
# based events
(Callback.BASED_CONFIG, based_config),
(Callback.BASED_INTERRUPT, based_interrupt),
(Callback.BASED_QUIT, based_quit),

# nuqql messages
(Callback.QUIT, stop),
(Callback.ADD_ACCOUNT, add_account),
(Callback.DEL_ACCOUNT, del_account),
(Callback.SEND_MESSAGE, send_message),
(Callback.SET_STATUS, set_status),
(Callback.GET_STATUS, get_status),
(Callback.CHAT_LIST, chat_list),
(Callback.CHAT_JOIN, chat_join),
(Callback.CHAT_PART, chat_part),
(Callback.CHAT_SEND, chat_send),
(Callback.CHAT_USERS, chat_users),
(Callback.CHAT_INVITE, chat_invite),
]
based.set_callbacks(callbacks)
based.start()
```

You can omit the callbacks you do not need in the `callbacks` list. In addition
to the code above, you need to implement the callbacks you specify in your
`callbacks` list.

The parameters passed to all callbacks are: the account, the callback and a
callback-specific parameter tuple. The following example shows the
`send_message` callback:

```python
async def send_message(account, callback, params):
"""
Send a message to another user.
"""

dest, msg = params
# do something with the message...

return ""
```

The callbacks are only used for commands coming from nuqql. You must handle
backend-specific events like receiving messages from other users in your
backend code and optionally pass them to nuqql-based. The following example
shows how incoming messages from other users can be passed to nuqql-based with
`Message.message()` and `receive_msg()`:

```python
from nuqql_based.message import Message

def receive(account, timestamp, sender, destination, text):
"""
Receive message from other user.
"""

msg = Message.message(account, timestamp, sender, destination, text)
account.receive_msg(msg)
```

## Changes

* v0.3.0:
* Switch to asyncio and increase required Python version to >= 3.7
* Remove copy of the buddy list from Account and rename callback
`UPDATE_BUDDIES` to `GET_BUDDIES` to match new behaviour
* Add callbacks:
* `HELP_WELCOME`: welcome/help message for clients
* `HELP_ACCOUNT_ADD`: help text for adding accounts
* Add configuration option for filtering own messages
* v0.2.0:
* Use only one log file
* Add "push-accounts" to configuration/command line arguments
* Add more info messages and extend output of "help" command
* Change callback parameter from account id to Account
* Add tests
* Cleanups and fixes
* v0.1:
* First release.