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#!/usr/bin/env python3
import bottle
import schedule
import argparse
import logging
import math
import pathlib
import threading
import time
import typing
import tagrss
MAX_PER_PAGE_ENTRIES = 1000
DEFAULT_PER_PAGE_ENTRIES = 50
logging.basicConfig(level=logging.INFO)
parser = argparse.ArgumentParser()
parser.add_argument("--host", default="localhost")
parser.add_argument("--port", default=8000, type=int)
parser.add_argument("--storage-path", required=True)
parser.add_argument("--update-seconds", default=3600, type=int)
args = parser.parse_args()
storage_path: pathlib.Path = pathlib.Path(args.storage_path)
core_lock = threading.RLock()
core = tagrss.TagRss(storage_path=storage_path)
def parse_space_separated_tags(inp: str) -> list[str]:
tags = set()
tag = ""
escaped = False
for c in inp:
match c:
case "\\":
if not escaped:
escaped = True
continue
case " ":
if not escaped:
tags.add(tag)
tag = ""
continue
escaped = False
tag += c
if tag:
tags.add(tag)
return list(sorted(tags))
def serialise_tags(tags: list[str]) -> str:
result = ""
for i, tag in enumerate(tags):
if i > 0:
result += " "
result += (tag.replace("\\", "\\\\")).replace(" ", "\\ ")
return result
@bottle.get("/")
def index():
per_page: int = min(MAX_PER_PAGE_ENTRIES, int(bottle.request.query.get("per_page", DEFAULT_PER_PAGE_ENTRIES))) # type: ignore
page_num = int(bottle.request.query.get("page_num", 1)) # type: ignore
offset = (page_num - 1) * per_page
with core_lock:
total_pages: int = max(1, math.ceil(core.get_entry_count() / per_page))
entries = core.get_entries(limit=per_page, offset=offset)
return bottle.template(
"index",
entries=entries,
offset=offset,
page_num=page_num,
total_pages=total_pages,
per_page=per_page,
max_per_page=MAX_PER_PAGE_ENTRIES,
core=core,
)
@bottle.get("/list_feeds")
def list_feeds():
per_page: int = min(MAX_PER_PAGE_ENTRIES, int(bottle.request.query.get("per_page", DEFAULT_PER_PAGE_ENTRIES))) # type: ignore
page_num = int(bottle.request.query.get("page_num", 1)) # type: ignore
offset = (page_num - 1) * per_page
with core_lock:
total_pages: int = max(1, math.ceil(core.get_feed_count() / per_page))
feeds = core.get_feeds(limit=per_page, offset=offset)
return bottle.template(
"list_feeds",
feeds=feeds,
offset=offset,
page_num=page_num,
total_pages=total_pages,
per_page=per_page,
max_per_page=MAX_PER_PAGE_ENTRIES,
core=core,
)
@bottle.get("/add_feed")
def add_feed_view():
return bottle.template("add_feed")
@bottle.post("/add_feed")
def add_feed_effect():
feed_source: str = bottle.request.forms.get("feed_source") # type: ignore
tags = parse_space_separated_tags(bottle.request.forms.get("tags")) # type: ignore
already_present: bool = False
parsed, epoch_downloaded = tagrss.fetch_parsed_feed(feed_source)
with core_lock:
try:
core.add_feed(feed_source=feed_source, parsed_feed=parsed, epoch_downloaded=epoch_downloaded, tags=tags)
except tagrss.FeedAlreadyAddedError:
already_present = True
# TODO: handle FeedFetchError too
return bottle.template(
"add_feed",
after_add=True,
feed_source=feed_source,
already_present=already_present,
)
@bottle.get("/manage_feed")
def manage_feed_view():
try:
feed_id_raw: str = bottle.request.query["feed"] # type: ignore
feed_id: int = int(feed_id_raw)
except KeyError:
raise bottle.HTTPError(400, "Feed ID not given.")
feed: dict[str, typing.Any] = {}
feed["id"] = feed_id
with core_lock:
feed["source"] = core.get_feed_source(feed_id)
feed["title"] = core.get_feed_title(feed_id)
feed["tags"] = core.get_feed_tags(feed_id)
feed["serialised_tags"] = serialise_tags(feed["tags"])
return bottle.template("manage_feed", feed=feed)
@bottle.post("/manage_feed")
def manage_feed_effect():
feed: dict[str, typing.Any] = {}
feed["id"] = int(bottle.request.forms["id"]) # type: ignore
feed["source"] = bottle.request.forms["source"] # type: ignore
feed["title"] = bottle.request.forms["title"] # type: ignore
feed["tags"] = parse_space_separated_tags(bottle.request.forms["tags"]) # type: ignore
feed["serialised_tags"] = bottle.request.forms["tags"] # type: ignore
with core_lock:
core.set_feed_source(feed["id"], feed["source"])
core.set_feed_title(feed["id"], feed["title"])
core.set_feed_tags(feed["id"], feed["tags"])
return bottle.template("manage_feed", feed=feed, after_update=True)
@bottle.post("/delete_feed")
def delete_feed():
feed_id: int = int(bottle.request.forms["id"]) # type: ignore
with core_lock:
core.delete_feed(feed_id)
return bottle.static_file("delete_feed.html", root="views")
@bottle.get("/static/<path:path>")
def serve_static(path):
return bottle.static_file(path, "static")
def update_feeds(run_event: threading.Event):
def inner_update():
logging.info("Updating feeds...")
limit = 100
with core_lock:
feed_count = core.get_feed_count()
for i in range(math.ceil(feed_count / limit)):
with core_lock:
feeds = core.get_feeds(limit=limit, offset=limit * i)
for feed in feeds:
parsed_feed, epoch_downloaded = tagrss.fetch_parsed_feed(feed["source"])
logging.debug(f"Updated feed with source {feed['source']} .")
with core_lock:
core.store_feed_entries(feed["id"], parsed_feed, epoch_downloaded)
logging.info("Finished updating feeds.")
inner_update()
schedule.every(args.update_seconds).seconds.do(inner_update)
while run_event.is_set():
schedule.run_pending()
time.sleep(1)
feed_update_run_event = threading.Event()
feed_update_run_event.set()
threading.Thread(target=update_feeds, args=(feed_update_run_event,)).start()
bottle.run(host=args.host, port=args.port, server="cheroot")
feed_update_run_event.clear()
with core_lock:
core.close()
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