from datetime import datetime

from django.core.handlers.wsgi import WSGIRequest
from django.http import HttpResponse, HttpResponseRedirect

from tmessage.models import tMMessage

from .helper import (get_user_object, get_username, render_template,
                     username_exists)


def auth(request: WSGIRequest) -> HttpResponseRedirect:
    resp = HttpResponseRedirect("/")
    if "remove" in request.GET:
        resp.set_cookie("sessionid", "", max_age=0, expires=datetime(0, 0, 0))
    else:
        resp.set_cookie("sessionid", request.GET.get("sessionid") or "")

    return resp

def index(request: WSGIRequest) -> HttpResponse:
    username = get_username(request)
    if username:
        user = get_user_object(username, i_promise_this_user_exists=True)

        return render_template(
            request, "index.html",
            username=username,
            new=user.received.filter(response=None).count() # type: ignore
        )

    return render_template(
        request, "noauth/index.html"
    )

def profile(request: WSGIRequest, username: str) -> HttpResponse:
    ...

def message(request: WSGIRequest, username: str) -> HttpResponse:
    if not username_exists(username):
        return render_template(
            request, "404.html"
        )

    error = ""
    if request.method == "POST":
        content = (request.POST.get("message") or "").strip()
        if len(content) > 10000:
            error = "Invalid message"

        else:
            self_username = get_username(request)

            if self_username is None:
                anonymous = True
                u_from = None
            else:
                anonymous = request.POST.get("anonymous") is not None
                u_from = get_user_object(self_username, i_promise_this_user_exists=True)

            tMMessage.objects.create(
                content=content,
                response=None,
                anonymous=anonymous,
                u_to=get_user_object(username, i_promise_this_user_exists=True),
                u_from=u_from
            )

            error = "Sent!"

    return render_template(
        request, "message.html",
        username=username,
        error=error,
        self_username=get_username(request)
    )