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#!/usr/bin/env python3
import sqlite3
import base64
from copy import copy
from datetime import datetime
from collections import defaultdict
from flask import Flask, render_template, jsonify, request, make_response
DB_PATH = "/home/mcrute/.newsbeuter/cache.db"
app = Flask(__name__)
class DataObject(object):
@classmethod
def from_db_row(cls, cursor, row):
return cls(*row)
def _update_json(self, data):
return
def to_json(self):
data = copy(self.__dict__)
self._update_json(data)
data['self'] = self.self_link
return data
def __repr__(self):
return '{self.__class__.__name__}({self.id!r}, {self.title!r})'.format(
self=self)
@property
def self_link(self):
return self.URL.format(self=self)
class RSSItem(DataObject):
URL = '/item/{self.id}'
def __init__(self, id, title, author, feed_title, feed_url, url,
publish_date, content, read):
self.id = id
self.feed_url = RSSFeed(feed_url, None, None).self_link
self.feed_title = feed_title
self.title = title
self.author = author
self.url = url
self.publish_date = datetime.fromtimestamp(publish_date)
self.content = content
self.read = not bool(read)
self.no_content = len(content) < 100
class RSSFeed(DataObject):
URL = '/feed/{self.id}'
def __init__(self, feed_url, url, title):
self.feed_url = feed_url
self.url = url
self.title = title
def _update_json(self, data):
data['items'] = '/feed/{}/items'.format(self.id)
@property
def id(self):
return base64.b64encode(
self.feed_url.encode('utf-8')).decode('utf-8').strip('=')
@staticmethod
def parse_token(token):
return base64.b64decode(
'{}========'.format(token).encode('utf-8')).decode('utf-8')
class DBReader(object):
BASE_QUERY = '''
SELECT
i.id, i.title, i.author, f.title,
f.rssurl, i.url, i.pubDate, i.content,
i.unread
FROM
rss_item i
INNER JOIN rss_feed f
ON f.rssurl = i.feedurl
{where}
{where_cond}
ORDER BY
i.pubDate desc
'''
def __init__(self, db_path):
self.con = sqlite3.connect(db_path)
self.con.row_factory = RSSItem.from_db_row
def close(self):
return self.con.close()
def _fetch(self, where=None, params=()):
with self.con as con:
curs = con.cursor()
args = { 'where': '', 'where_cond': '' }
if where:
args.update({ 'where': 'WHERE', 'where_cond': where })
curs.execute(self.BASE_QUERY.format(**args), params)
return curs.fetchall()
def update_unread(self, id, unread=True):
with self.con as con:
con.execute(
'UPDATE rss_item SET unread = ? WHERE id = ?',
[1 if unread else 0, id])
con.commit()
def get_entry(self, id):
return self._fetch("i.id = ?", [id])[0]
def get_unread(self):
data = defaultdict(list)
unread = self._fetch("i.unread = ?", [1])
for record in unread:
data[record.feed_title].append(record)
return sorted(data.items())
def get_unread_for_feed(self, token, only_unread=False):
if only_unread:
return self._fetch("i.unread = ? AND i.feedurl = ?", [1, RSSFeed.parse_token(token)])
else:
return self._fetch("i.feedurl = ?", [RSSFeed.parse_token(token)])
def get_feeds(self):
with self.con as con:
con.row_factory = RSSFeed.from_db_row
curs = con.cursor()
curs.execute('SELECT rssurl, url, title FROM rss_feed')
return curs.fetchall()
def get_feed(self, token):
with self.con as con:
con.row_factory = RSSFeed.from_db_row
curs = con.cursor()
curs.execute('SELECT rssurl, url, title FROM rss_feed WHERE rssurl = ?', [RSSFeed.parse_token(token)])
return curs.fetchall()[0]
def json_list(data):
return [i.to_json() for i in data]
@app.route('/')
def index():
reader = DBReader(DB_PATH)
return render_template('items.html', items=reader.get_unread())
@app.route('/feed/')
def feed_list():
reader = DBReader(DB_PATH)
return jsonify({ 'feeds': json_list(reader.get_feeds()) })
@app.route('/feed/<token>')
def feed(token):
reader = DBReader(DB_PATH)
return jsonify(reader.get_feed(token).to_json())
@app.route('/feed/<token>/items')
def feed_items(token):
reader = DBReader(DB_PATH)
unread = reader.get_unread_for_feed(token)
return jsonify({ 'items': json_list(unread), "count": len(unread) })
@app.route('/feed/<token>/items/unread')
def unread_feed_items(token):
reader = DBReader(DB_PATH)
unread = reader.get_unread_for_feed(token, True)
return jsonify({ 'items': json_list(unread), "count": len(unread) })
@app.route("/item/<int:entry_id>", methods=["GET", "POST"])
def item(entry_id):
#post read=1
reader = DBReader(DB_PATH)
if request.method == 'POST':
try:
read = bool(int(request.form.get('read')))
except:
return make_response('', 400)
reader.update_unread(entry_id, not read)
return make_response('', 204)
else:
return jsonify(reader.get_entry(entry_id).to_json())
if __name__ == '__main__':
app.debug = True
app.run()
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