from datetime import datetime, timedelta
import itertools

from module_project.service import OneSignalService
from .models import InAppNotification
from module_iam.models import IAmPrincipal, IAmPrincipalType
from module_activity.models import MealRecord, Bowel, MealSymptomRecord, Medication


def notification_for_meal():
    notification_message = "Have you eaten yet? It's been a while since you logged a meal."
    current_date = datetime.now()
    fifteen_days_ago = current_date - timedelta(days=15)

    users = IAmPrincipal.objects.filter(
        last_login__gte=fifteen_days_ago,
        principal_type=IAmPrincipalType.get_principal_user(),
    ).values_list("id", flat=True)

    meal_obj = MealRecord.objects.filter(date=current_date).values_list(
        "principal", flat=True
    )

    # Remove IDs of users who have recorded meals for the current day
    users_without_meals = set(users) - set(meal_obj)
    print(f"user id {set(users)}")
    print(
        f"userwithoutmeal {users_without_meals}"
    )

    player_ids = list(
        IAmPrincipal.objects.filter(
            id__in=users_without_meals
        ).values_list("player_id", flat=True)
    )
    # removing none from list
    player_ids = list(itertools.filterfalse(lambda x: x is None, player_ids))

    notifications_to_create = []
    if users_without_meals:
        for user_id in users_without_meals:
            message = notification_message
            notifications_to_create.append(
                InAppNotification(user_id=user_id, message=message)
            )

    # Bulk create notifications
    if notifications_to_create:
        InAppNotification.objects.bulk_create(notifications_to_create)

    try:
        notification = OneSignalService()
        response = notification.send_notification(
            headings="Meal",
            contents=notification_message,
            include_player_ids=player_ids,
        )
    except Exception as e:
        print(f"Notification error in meal {str(e)}")
        pass

def notification_for_medication():
    notification_message = "Have you taken your medication today? Remember to log your medication to stay on track with your treatment!"
    current_date = datetime.now()
    fifteen_days_ago = current_date - timedelta(days=15)

    users = IAmPrincipal.objects.filter(
        last_login__gte=fifteen_days_ago,
        principal_type=IAmPrincipalType.get_principal_user(),
    ).values_list("id", flat=True)

    medication_obj = Medication.objects.filter(date=current_date).values_list(
        "principal", flat=True
    )

    # Remove IDs of users who have recorded medication for the current day
    users_without_medications = set(users) - set(medication_obj)
    print(f"user id {set(users)}")
    print(
        f"users_without_medication {users_without_medications}"
    )

    player_ids = list(
        IAmPrincipal.objects.filter(
            id__in=users_without_medications
        ).values_list("player_id", flat=True)
    )
    # removing none from list
    player_ids = list(itertools.filterfalse(lambda x: x is None, player_ids))

    notifications_to_create = []
    if users_without_medications:
        for user_id in users_without_medications:
            message = notification_message
            notifications_to_create.append(
                InAppNotification(user_id=user_id, message=message)
            )

    # Bulk create notifications
    if notifications_to_create:
        InAppNotification.objects.bulk_create(notifications_to_create)

    try:
        notification = OneSignalService()
        response = notification.send_notification(
            headings="Medication",
            contents=notification_message,
            include_player_ids=player_ids,
        )
    except Exception as e:
        print(f"Notification error in medication {str(e)}")
        pass

def notification_for_symptom():
    notification_message = "How are you feeling? Don't forget to input your symptoms."
    current_date = datetime.now()
    fifteen_days_ago = current_date - timedelta(days=15)

    users = IAmPrincipal.objects.filter(
        last_login__gte=fifteen_days_ago,
        principal_type=IAmPrincipalType.get_principal_user(),
    ).values_list("id", flat=True)

    symptom_obj = MealSymptomRecord.objects.filter(date=current_date).values_list(
        "principal", flat=True
    )

    # Remove IDs of users who have recorded symptoms for the current day
    users_without_medications = set(users) - set(symptom_obj)
    print(f"user id {set(users)}")
    print(
        f"users_without_medication {users_without_medications}"
    )

    player_ids = list(
        IAmPrincipal.objects.filter(
            id__in=users_without_medications
        ).values_list("player_id", flat=True)
    )
    # removing none from list
    player_ids = list(itertools.filterfalse(lambda x: x is None, player_ids))

    notifications_to_create = []
    if users_without_medications:
        for user_id in users_without_medications:
            message = notification_message
            notifications_to_create.append(
                InAppNotification(user_id=user_id, message=message)
            )

    # Bulk create notifications
    if notifications_to_create:
        InAppNotification.objects.bulk_create(notifications_to_create)

    try:
        notification = OneSignalService()
        response = notification.send_notification(
            headings="Symptom",
            contents=notification_message,
            include_player_ids=player_ids,
        )
    except Exception as e:
        print(f"Notification error in medication {str(e)}")
        pass


def testing_cron():
    print("cron is working ")