ticketfrei3/kibicara/webapi/hoods/triggers.py
2020-07-13 19:14:22 +02:00

81 lines
2.7 KiB
Python

# Copyright (C) 2020 by Thomas Lindner <tom@dl6tom.de>
# Copyright (C) 2020 by Cathy Hu <cathy.hu@fau.de>
#
# SPDX-License-Identifier: 0BSD
""" REST API endpoints for managing triggers.
Provides API endpoints for adding, removing and reading regular expressions that allow a
message to be passed through by a censor. A published message must match one of these
regular expressions otherwise it gets dropped by the censor. This provides a message
filter customizable by the hood admins.
"""
from fastapi import APIRouter, Depends, HTTPException, Response, status
from kibicara.model import Trigger
from kibicara.webapi.hoods import get_hood
from ormantic.exceptions import NoMatch
from pydantic import BaseModel
from re import compile as regex_compile, error as RegexError
from sqlite3 import IntegrityError
class BodyTrigger(BaseModel):
pattern: str
async def get_trigger(trigger_id: int, hood=Depends(get_hood)):
try:
return await Trigger.objects.get(id=trigger_id, hood=hood)
except NoMatch:
raise HTTPException(status_code=status.HTTP_404_NOT_FOUND)
router = APIRouter()
@router.get('/')
async def trigger_read_all(hood=Depends(get_hood)):
""" Get all triggers of hood with id **hood_id**. """
return await Trigger.objects.filter(hood=hood).all()
@router.post('/', status_code=status.HTTP_201_CREATED)
async def trigger_create(
values: BodyTrigger, response: Response, hood=Depends(get_hood)
):
""" Creates a new trigger for hood with id **hood_id**.
- **pattern**: Regular expression which is used to match a trigger.
"""
try:
regex_compile(values.pattern)
trigger = await Trigger.objects.create(hood=hood, **values.__dict__)
response.headers['Location'] = '%d' % trigger.id
return trigger
except IntegrityError:
raise HTTPException(status_code=status.HTTP_409_CONFLICT)
except RegexError:
raise HTTPException(status_code=status.HTTP_422_UNPROCESSABLE_ENTITY)
@router.get('/{trigger_id}')
async def trigger_read(trigger=Depends(get_trigger)):
""" Reads trigger with id **trigger_id** for hood with id **hood_id**. """
return trigger
@router.put('/{trigger_id}', status_code=status.HTTP_204_NO_CONTENT)
async def trigger_update(values: BodyTrigger, trigger=Depends(get_trigger)):
""" Updates trigger with id **trigger_id** for hood with id **hood_id**.
- **pattern**: Regular expression which is used to match a trigger
"""
await trigger.update(**values.__dict__)
@router.delete('/{trigger_id}', status_code=status.HTTP_204_NO_CONTENT)
async def trigger_delete(trigger=Depends(get_trigger)):
""" Deletes trigger with id **trigger_id** for hood with id **hood_id**. """
await trigger.delete()