ical.py

from flask import Blueprint
from flask import request
from flask import Response
import settings as s

ical = Blueprint("ical", __name__)

@ical.route("/e/<fn>.ics")
def try_ics(fn):
    try:
        return show_ics(fn)
    except:
        return False
    
def show_ics(fn):
    with open(f"./data/{fn}", "r") as data:
        data = data.read().splitlines()
    with open("templates/ics.txt", "r") as temp:
        temp = temp.read()
    chars = {"<br>": "\\n", ",": "\,",
             "&lt;":"<", "&gt;": ">",
             "&apos;":"'", "&quot;": "\"",
             }
    e = {"fn":fn, "iso":0, "title":0,
         "host":0, "desc":0, "loc":0}
    e["iso"] = f"{fn[:8]}T{fn[8:10]}0000Z"
    e["title"] = data[0].replace(",", "\,")
    e["host"] = data[1].split(">")[0].replace(",", "\,")
    e["loc"] = data[2]
    e["desc"] = data[3]
    for c in chars:
        if c in e["desc"]:
            e["desc"] = e["desc"].replace(c, chars[c])
    output = eval(f'f"""{temp}"""')
    return Response(output, mimetype="text/calendar")