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Slixfeed/slixfeed/task.py
Schimon Jehudah f65be8b5c8 WIP 
Add http proxy support.
Add more functionality to handle bookmarks.
Split into more modules.
Remove callback function initdb.
Tasked status messages are broken.
2024-01-02 11:42:41 +00:00

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Python
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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
FIXME
1) Function check_readiness or event "changed_status" is causing for
triple status messages and also false ones that indicate of lack
of feeds.
TODO
1) Deprecate "add" (see above) and make it interactive.
Slixfeed: Do you still want to add this URL to subscription list?
See: case _ if message_lowercase.startswith("add"):
2) Use loop (with gather) instead of TaskGroup.
3) Assure message delivery before calling a new task.
See https://slixmpp.readthedocs.io/en/latest/event_index.html#term-marker_acknowledged
4) Do not send updates when busy or away.
See https://slixmpp.readthedocs.io/en/latest/event_index.html#term-changed_status
5) Animate "You have X news items"
📬️ when sent
📫️ after sent
NOTE
1) Self presence
Apparently, it is possible to view self presence.
This means that there is no need to store presences in order to switch or restore presence.
check_readiness
<presence from="slixfeed@canchat.org/xAPgJLHtMMHF" xml:lang="en" id="ab35c07b63a444d0a7c0a9a0b272f301" to="slixfeed@canchat.org/xAPgJLHtMMHF"><status>📂 Send a URL from a blog or a news website.</status><x xmlns="vcard-temp:x:update"><photo /></x></presence>
JID: self.boundjid.bare
MUC: self.nick
"""
import asyncio
import logging
import os
import slixmpp
from slixfeed.config import (
get_pathname_to_database,
get_default_dbdir,
get_value_default)
from slixfeed.datetime import current_time
from slixfeed.fetch import download_updates
from slixfeed.sqlite import (
get_entry_unread,
get_settings_value,
get_number_of_items,
get_number_of_entries_unread
)
# from xmpp import Slixfeed
import slixfeed.xmpp.client as xmpp
import slixfeed.xmpp.utility as utility
main_task = []
jid_tasker = {}
task_manager = {}
loop = asyncio.get_event_loop()
"""
FIXME
Tasks don't begin at the same time.
This is noticeable when calling "check" before "status".
await taskhandler.start_tasks(
self,
jid,
["check", "status"]
)
"""
async def start_tasks_xmpp(self, jid, tasks):
# print("start_tasks_xmpp", jid, tasks)
task_manager[jid] = {}
for task in tasks:
# print("task:", task)
# print("tasks:")
# print(tasks)
# breakpoint()
match task:
case "check":
task_manager[jid]["check"] = asyncio.create_task(
check_updates(jid))
case "status":
task_manager[jid]["status"] = asyncio.create_task(
send_status(self, jid))
case "interval":
task_manager[jid]["interval"] = asyncio.create_task(
send_update(self, jid))
# for task in task_manager[jid].values():
# print("task_manager[jid].values()")
# print(task_manager[jid].values())
# print("task")
# print(task)
# print("jid")
# print(jid)
# breakpoint()
# await task
async def clean_tasks_xmpp(jid, tasks):
# print("clean_tasks_xmpp", jid, tasks)
for task in tasks:
# if task_manager[jid][task]:
try:
task_manager[jid][task].cancel()
except:
print("No task", task, "for JID", jid, "(clean_tasks)")
"""
TODO
Rename to "start_tasks"
Pass a list (or dict) of tasks to start
NOTE
Consider callback e.g. Slixfeed.send_status.
Or taskhandler for each protocol or specific taskhandler function.
"""
async def task_jid(self, jid):
# print("task_jid", jid)
"""
JID (Jabber ID) task manager.
Parameters
----------
jid : str
Jabber ID.
"""
db_file = get_pathname_to_database(jid)
enabled = await get_settings_value(db_file, "enabled")
# print(await current_time(), "enabled", enabled, jid)
if enabled:
# NOTE Perhaps we want to utilize super with keyword
# arguments in order to know what tasks to initiate.
task_manager[jid] = {}
task_manager[jid]["check"] = asyncio.create_task(
check_updates(jid))
task_manager[jid]["status"] = asyncio.create_task(
send_status(self, jid))
task_manager[jid]["interval"] = asyncio.create_task(
send_update(self, jid))
await task_manager[jid]["check"]
await task_manager[jid]["status"]
await task_manager[jid]["interval"]
# tasks_dict = {
# "check": check_updates,
# "status": send_status,
# "interval": send_update
# }
# for task, function in tasks_dict.items():
# task_manager[jid][task] = asyncio.create_task(
# function(jid)
# )
# await function
else:
# FIXME
# The following error occurs only upon first attempt to stop.
# /usr/lib/python3.11/asyncio/events.py:73: RuntimeWarning: coroutine 'Slixfeed.send_update' was never awaited
# self._args = None
# RuntimeWarning: Enable tracemalloc to get the object allocation traceback
try:
task_manager[jid]["interval"].cancel()
except:
None
await send_status(self, jid)
async def send_update(self, jid, num=None):
print("send_update", jid)
# print(await current_time(), jid, "def send_update")
"""
Send news items as messages.
Parameters
----------
jid : str
Jabber ID.
num : str, optional
Number. The default is None.
"""
# print("Starting send_update()")
# print(jid)
db_file = get_pathname_to_database(jid)
enabled = await get_settings_value(db_file, "enabled")
if enabled:
new = await get_entry_unread(db_file, num)
if new:
# TODO Add while loop to assure delivery.
# print(await current_time(), ">>> ACT send_message",jid)
chat_type = await utility.jid_type(self, jid)
# NOTE Do we need "if statement"? See NOTE at is_muc.
if chat_type in ("chat", "groupchat"):
xmpp.Slixfeed.send_message(
self, mto=jid, mbody=new, mtype=chat_type)
# TODO Do not refresh task before
# verifying that it was completed.
await refresh_task(
self, jid, send_update, "interval")
# interval = await initdb(
# jid,
# get_settings_value,
# "interval"
# )
# task_manager[jid]["interval"] = loop.call_at(
# loop.time() + 60 * interval,
# loop.create_task,
# send_update(jid)
# )
# print(await current_time(), "asyncio.get_event_loop().time()")
# print(await current_time(), asyncio.get_event_loop().time())
# await asyncio.sleep(60 * interval)
# loop.call_later(
# 60 * interval,
# loop.create_task,
# send_update(jid)
# )
# print
# await handle_event()
async def send_status(self, jid):
# print("send_status", jid)
# print(await current_time(), jid, "def send_status")
"""
Send status message.
Parameters
----------
jid : str
Jabber ID.
"""
# print(await current_time(), "> SEND STATUS",jid)
status_text="🤖️ Slixfeed RSS News Bot"
db_file = get_pathname_to_database(jid)
enabled = await get_settings_value(db_file, "enabled")
if not enabled:
status_mode = "xa"
status_text = "📫️ Send \"Start\" to receive updates"
else:
feeds = get_number_of_items(db_file, "feeds")
# print(await current_time(), jid, "has", feeds, "feeds")
if not feeds:
print(">>> not feeds:", feeds, "jid:", jid)
status_mode = "available"
status_text = (
"📪️ Send a URL from a blog or a news website"
)
else:
unread = await get_number_of_entries_unread(db_file)
if unread:
status_mode = "chat"
status_text = (
"📬️ There are {} news items"
).format(str(unread))
# status_text = (
# "📰 News items: {}"
# ).format(str(unread))
# status_text = (
# "📰 You have {} news items"
# ).format(str(unread))
else:
status_mode = "available"
status_text = "📭️ No news"
# breakpoint()
# print(await current_time(), status_text, "for", jid)
xmpp.Slixfeed.send_presence(
self,
pshow=status_mode,
pstatus=status_text,
pto=jid,
#pfrom=None
)
# await asyncio.sleep(60 * 20)
await refresh_task(
self, jid, send_status, "status", "20")
# loop.call_at(
# loop.time() + 60 * 20,
# loop.create_task,
# send_status(jid)
# )
async def refresh_task(self, jid, callback, key, val=None):
# print("refresh_task", jid, key)
"""
Apply new setting at runtime.
Parameters
----------
jid : str
Jabber ID.
key : str
Key.
val : str, optional
Value. The default is None.
"""
if not val:
db_file = get_pathname_to_database(jid)
val = await get_settings_value(db_file, key)
# if task_manager[jid][key]:
if jid in task_manager:
try:
task_manager[jid][key].cancel()
except:
print("No task of type", key, "to cancel for JID", jid)
# task_manager[jid][key] = loop.call_at(
# loop.time() + 60 * float(val),
# loop.create_task,
# (callback(self, jid))
# # send_update(jid)
# )
task_manager[jid][key] = loop.create_task(
wait_and_run(self, callback, jid, val)
)
# task_manager[jid][key] = loop.call_later(
# 60 * float(val),
# loop.create_task,
# send_update(jid)
# )
# task_manager[jid][key] = send_update.loop.call_at(
# send_update.loop.time() + 60 * val,
# send_update.loop.create_task,
# send_update(jid)
# )
async def wait_and_run(self, callback, jid, val):
await asyncio.sleep(60 * float(val))
await callback(self, jid)
# TODO Take this function out of
# <class 'slixmpp.clientxmpp.ClientXMPP'>
async def check_updates(jid):
# print("check_updates", jid)
# print(await current_time(), jid, "def check_updates")
"""
Start calling for update check up.
Parameters
----------
jid : str
Jabber ID.
"""
while True:
# print(await current_time(), "> CHCK UPDATE",jid)
db_file = get_pathname_to_database(jid)
await download_updates(db_file)
val = get_value_default("settings", "Settings", "check")
await asyncio.sleep(60 * float(val))
# Schedule to call this function again in 90 minutes
# loop.call_at(
# loop.time() + 60 * 90,
# loop.create_task,
# self.check_updates(jid)
# )
async def start_tasks(self, presence):
# print("def presence_available", presence["from"].bare)
jid = presence["from"].bare
if jid not in self.boundjid.bare:
await clean_tasks_xmpp(
jid, ["interval", "status", "check"])
await start_tasks_xmpp(
self, jid, ["interval", "status", "check"])
# await task_jid(self, jid)
# main_task.extend([asyncio.create_task(task_jid(jid))])
# print(main_task)
async def stop_tasks(self, presence):
if not self.boundjid.bare:
jid = presence["from"].bare
print(">>> unavailable:", jid)
await clean_tasks_xmpp(
jid, ["interval", "status", "check"])
async def check_readiness(self, presence):
"""
Begin tasks if available, otherwise eliminate tasks.
Parameters
----------
presence : str
XML stanza .
Returns
-------
None.
"""
# print("def check_readiness", presence["from"].bare, presence["type"])
# # available unavailable away (chat) dnd xa
# print(">>> type", presence["type"], presence["from"].bare)
# # away chat dnd xa
# print(">>> show", presence["show"], presence["from"].bare)
jid = presence["from"].bare
if presence["show"] in ("away", "dnd", "xa"):
print(">>> away, dnd, xa:", jid)
await clean_tasks_xmpp(
jid, ["interval"])
await start_tasks_xmpp(
self, jid, ["status", "check"])
"""
NOTE
This is an older system, utilizing local storage instead of XMPP presence.
This function is good for use with protocols that might not have presence.
ActivityPub, IRC, LXMF, Matrix, SMTP, Tox.
"""
async def select_file(self):
"""
Initiate actions by JID (Jabber ID).
"""
while True:
db_dir = get_default_dbdir()
if not os.path.isdir(db_dir):
msg = (
"Slixfeed can not work without a database.\n"
"To create a database, follow these steps:\n"
"Add Slixfeed contact to your roster.\n"
"Send a feed to the bot by URL:\n"
"https://reclaimthenet.org/feed/"
)
# print(await current_time(), msg)
print(msg)
else:
os.chdir(db_dir)
files = os.listdir()
# TODO Use loop (with gather) instead of TaskGroup
# for file in files:
# if file.endswith(".db") and not file.endswith(".db-jour.db"):
# jid = file[:-3]
# jid_tasker[jid] = asyncio.create_task(self.task_jid(jid))
# await jid_tasker[jid]
async with asyncio.TaskGroup() as tg:
for file in files:
if (file.endswith(".db") and
not file.endswith(".db-jour.db")):
jid = file[:-3]
main_task.extend([tg.create_task(self.task_jid(jid))])
# main_task = [tg.create_task(self.task_jid(jid))]
# task_manager.update({jid: tg})
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