furmeet_events_htmltable2ics/backend_code/app.py

#!/usr/bin/env python3
# -*- encoding: utf-8 -*-

from pathlib import Path

import datetime

import timetable_parser
from flask import Flask, make_response, render_template, request, send_file

app = Flask(__name__, instance_relative_config=True)


@app.route('/', methods=['HEAD', 'OPTIONS', 'GET'])
def index():
    return render_template('index.html', datetime=datetime)


@app.route('/favicon.ico', methods=['HEAD', 'OPTIONS', 'GET'])
def favicon():
    return send_file(Path('favicon.ico'))


@app.route('/convert.ics', methods=['HEAD', 'OPTIONS', 'GET'])
def convert():
    url = request.args.get('url', '').strip()
    format_ = request.args.get('format', '').strip()
    axis = request.args.get('axis', '').strip()
    lang = request.args.get('lang', '').strip()
    content = request.args.get('content', '').strip()
    year = request.args.get('year', '').strip()
    month = request.args.get('month', '').strip()
    day = request.args.get('day', '').strip()
    tzcode = request.args.get('tzcode', '').strip()
    ignore_names_str = request.args.get('ignore_names', '').strip()
    ignore_names_sep = request.args.get('ignore_names_sep', '').strip()
    ignore_names = list(
        map(str.lower, filter(len, ignore_names_str.split(ignore_names_sep))))
    'EN,ES,PT'.split(',').index(lang)
    calendar = timetable_parser.main_decomposed_args(
        origin=timetable_parser.Source.url,
        path=url,
        format_=timetable_parser.Format(format_),
        line=[timetable_parser.AxisMeaning.time, timetable_parser.AxisMeaning.place,
              ][int(bool(axis == 'trans'))],
        column=[timetable_parser.AxisMeaning.time, timetable_parser.AxisMeaning.place,
                ][int(bool(axis != 'trans'))],
        content=timetable_parser.ContentMeaning(content),
        year=int(year) if year != '' else datetime.date.today().year,
        month=int(month) if month != '' else datetime.date.today().month,
        day=int(day) if day != '' else datetime.date.today().day,
        lang=lang,
        timezone_=tzcode,
        ignore_names=ignore_names,
    )
    resp_text = str(calendar)
    resp = make_response(resp_text.encode('utf-8'), 200)
    resp.mimetype = 'text/plain'
    resp.mimetype_params['charset'] = 'utf-8'
    return resp