from datetime import timedelta

from django.utils import timezone

from misago.users.bans import get_user_ban
from misago.users.models import BanCache, Online

ACTIVITY_CUTOFF = timedelta(minutes=2)


def make_users_status_aware(request, users, fetch_state=False):
    users_dict = {}
    for user in users:
        users_dict[user.pk] = user

    if fetch_state:
        # Fill ban cache on users
        for ban_cache in BanCache.objects.filter(user__in=users_dict.keys()):
            users_dict[ban_cache.user_id].ban_cache = ban_cache

        # Fill user online trackers
        for online_tracker in Online.objects.filter(user__in=users_dict.keys()):
            users_dict[online_tracker.user_id].online_tracker = online_tracker

    # Fill user states
    for user in users:
        user.status = get_user_status(request, user)


def get_user_status(request, user):
    user_status = {
        "is_banned": False,
        "is_hidden": user.is_hiding_presence,
        "is_online_hidden": False,
        "is_offline_hidden": False,
        "is_online": False,
        "is_offline": False,
        "banned_until": None,
        "last_click": user.last_login or user.joined_on,
    }

    user_ban = get_user_ban(user, request.cache_versions)
    if user_ban:
        user_status["is_banned"] = True
        user_status["banned_until"] = user_ban.expires_on

    try:
        online_tracker = user.online_tracker
        is_hidden = (
            user.is_hiding_presence and not request.user_acl["can_see_hidden_users"]
        )

        if online_tracker and not is_hidden:
            if online_tracker.last_click >= timezone.now() - ACTIVITY_CUTOFF:
                user_status["is_online"] = True
                user_status["last_click"] = online_tracker.last_click
    except Online.DoesNotExist:
        pass

    if user_status["is_hidden"]:
        if request.user_acl["can_see_hidden_users"]:
            user_status["is_hidden"] = False
            if user_status["is_online"]:
                user_status["is_online_hidden"] = True
                user_status["is_online"] = False
            else:
                user_status["is_offline_hidden"] = True
                user_status["is_offline"] = False
        else:
            user_status["is_hidden"] = True
    else:
        if user_status["is_online"]:
            user_status["is_online"] = True
        else:
            user_status["is_offline"] = True

    return user_status