litecord/litecord/system_messages.py

159 lines
4.1 KiB
Python

"""
Litecord
Copyright (C) 2018-2019 Luna Mendes
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, version 3 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
from logbook import Logger
from litecord.snowflake import get_snowflake
from litecord.enums import MessageType
log = Logger(__name__)
async def _handle_pin_msg(app, channel_id, _pinned_id, author_id):
"""Handle a message pin."""
new_id = get_snowflake()
await app.db.execute(
"""
INSERT INTO messages
(id, channel_id, guild_id, author_id,
webhook_id, content, message_type)
VALUES
($1, $2, NULL, $3, NULL, '',
$4)
""",
new_id, channel_id, author_id,
MessageType.CHANNEL_PINNED_MESSAGE.value
)
return new_id
# TODO: decrease repetition between add and remove handlers
async def _handle_recp_add(app, channel_id, author_id, peer_id):
new_id = get_snowflake()
await app.db.execute(
"""
INSERT INTO messages
(id, channel_id, author_id, webhook_id,
content, message_type)
VALUES
($1, $2, $3, NULL, $4, $5)
""",
new_id, channel_id, author_id,
f'<@{peer_id}>',
MessageType.RECIPIENT_ADD.value
)
return new_id
async def _handle_recp_rmv(app, channel_id, author_id, peer_id):
new_id = get_snowflake()
await app.db.execute(
"""
INSERT INTO messages
(id, channel_id, author_id, webhook_id,
content, message_type)
VALUES
($1, $2, $3, NULL, $4, $5)
""",
new_id, channel_id, author_id,
f'<@{peer_id}>',
MessageType.RECIPIENT_REMOVE.value
)
return new_id
async def _handle_gdm_name_edit(app, channel_id, author_id):
new_id = get_snowflake()
gdm_name = await app.db.fetchval("""
SELECT name FROM group_dm_channels
WHERE id = $1
""", channel_id)
if not gdm_name:
log.warning('no gdm name found for sys message')
return
await app.db.execute(
"""
INSERT INTO messages
(id, channel_id, author_id, webhook_id,
content, message_type)
VALUES
($1, $2, $3, NULL, $4, $5)
""",
new_id, channel_id, author_id,
gdm_name,
MessageType.CHANNEL_NAME_CHANGE.value
)
return new_id
async def _handle_gdm_icon_edit(app, channel_id, author_id):
new_id = get_snowflake()
await app.db.execute(
"""
INSERT INTO messages
(id, channel_id, author_id, webhook_id,
content, message_type)
VALUES
($1, $2, $3, NULL, $4, $5)
""",
new_id, channel_id, author_id,
'',
MessageType.CHANNEL_ICON_CHANGE.value
)
return new_id
async def send_sys_message(app, channel_id: int, m_type: MessageType,
*args, **kwargs) -> int:
"""Send a system message."""
try:
handler = {
MessageType.CHANNEL_PINNED_MESSAGE: _handle_pin_msg,
# gdm specific
MessageType.RECIPIENT_ADD: _handle_recp_add,
MessageType.RECIPIENT_REMOVE: _handle_recp_rmv,
MessageType.CHANNEL_NAME_CHANGE: _handle_gdm_name_edit,
MessageType.CHANNEL_ICON_CHANGE: _handle_gdm_icon_edit
}[m_type]
except KeyError:
raise ValueError('Invalid system message type')
message_id = await handler(app, channel_id, *args, **kwargs)
message = await app.storage.get_message(message_id)
await app.dispatcher.dispatch(
'channel', channel_id, 'MESSAGE_CREATE', message
)
return message_id