#!/usr/bin/env python

from flask import Flask
from caldav import DAVClient, Calendar, Principal, Todo


# TODO:
# [ ] settings file to not have hardcoded credentials
# [ ] change production credentials
# [ ] nix flake with complete module
# [ ] post behavior (simple)
# [ ] post behavior (concurrent protection)
# [ ] check if better http server availible or fastcgi better suited
#!/usr/bin/env python
def fetch_10_next_todos_as_csv() -> str:
    def auth() -> Principal:
        # TODO: on the final version, fetch it locally
        client = DAVClient(
            url="https://cal.stuce.ch", username="eInk", password="4Ftxy9rp8e$F*f"
        )
        principal = client.principal()
        return principal

    def get_calendar(principal: Principal) -> Calendar:
        calendar = principal.calendar(name="Ouais le ménage")
        return calendar

    def todos_to_csv(todos: list[Todo]) -> str:
        result = "".join(
            f"{todo.icalendar_component['uid']},{todo.icalendar_component['summary']}\n"
            for todo in todos
        )
        return result

    principal = auth()
    calendar = get_calendar(principal)

    sorted_todos = calendar.todos(sort_keys=("due"))
    cut_todos = sorted_todos[:10]
    csv = todos_to_csv(cut_todos)
    return csv


def put(todos, uid):
    item = filter(lambda todo: todo.icalendar_component["uid"] == uid, todos)


# class SimpleHandler(BaseHTTPRequestHandler):
#     def do_GET(self):
#         self.send_response(200)
#         self.send_header("Content-type", "text/plain")
#         self.end_headers()
#         response_body_str = fetch_10_next_todos_as_csv()
#         response_body_utf8 = response_body_str.encode("utf8")
#         self.wfile.write(response_body_utf8)
#
#
# def main(server_class=HTTPServer, port=8000):
#     server_address = ("", port)
#     httpd = server_class(server_address, SimpleHandler)
#     httpd.serve_forever()
#
#
# if __name__ == "__main__":
#     main()


app = Flask(__name__)


@app.route("/")
def send_events():
    return fetch_10_next_todos_as_csv()


if __name__ == "__main__":
    app.run(host="0.0.0.0", port=8080)