#!/usr/bin/env python3 """ Copyright (c) 2023-present Arjun Satarkar . Licensed under the GNU Affero General Public License v3.0. See LICENSE.txt in the root of this repository for the text of the license. """ 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.template("delete_feed") @bottle.get("/static/") 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()