from django.shortcuts import render, redirect

from .models import Game, Platform, Purchase, Session
from .forms import SessionForm, PurchaseForm, GameForm, PlatformForm
from datetime import datetime, timedelta
from zoneinfo import ZoneInfo
from django.conf import settings
from common.util.time import now as now_with_tz, format_duration
from django.db.models import Sum
import logging
from common.util.plots import playtime_over_time_chart


def model_counts(request):
    return {
        "game_available": Game.objects.count() != 0,
        "platform_available": Platform.objects.count() != 0,
        "purchase_available": Purchase.objects.count() != 0,
        "session_count": Session.objects.count(),
    }


def add_session(request):
    context = {}
    now = now_with_tz()
    initial = {"timestamp_start": now}
    form = SessionForm(request.POST or None, initial=initial)
    if form.is_valid():
        form.save()
        return redirect("list_sessions")

    context["title"] = "Add New Session"
    context["form"] = form
    return render(request, "add.html", context)


def update_session(request, session_id=None):
    session = Session.objects.get(id=session_id)
    session.finish_now()
    session.save()
    return redirect("list_sessions")


def start_session(request, purchase_id=None):
    session = SessionForm({"purchase": purchase_id, "timestamp_start": now_with_tz()})
    session.save()
    return redirect("list_sessions")


def delete_session(request, session_id=None):
    session = Session.objects.get(id=session_id)
    session.delete()
    return redirect("list_sessions")


def list_sessions(request, filter="", purchase_id="", platform_id="", game_id=""):
    context = {}

    if filter == "purchase":
        dataset = Session.objects.filter(purchase=purchase_id)
        context["purchase"] = Purchase.objects.get(id=purchase_id)
    elif filter == "platform":
        dataset = Session.objects.filter(purchase__platform=platform_id)
        context["platform"] = Platform.objects.get(id=platform_id)
    elif filter == "game":
        dataset = Session.objects.filter(purchase__game=game_id)
        context["game"] = Platform.objects.get(id=game_id)
    else:
        dataset = Session.objects.all().order_by("-timestamp_start")

    for session in dataset:
        if session.timestamp_end == None and session.duration_manual.seconds == 0:
            session.timestamp_end = datetime.now(ZoneInfo(settings.TIME_ZONE))
            session.unfinished = True

    context["total_duration"] = dataset.total_duration()
    context["dataset"] = dataset
    context["chart"] = playtime_over_time_chart(dataset)

    return render(request, "list_sessions.html", context)


def add_purchase(request):
    context = {}
    now = datetime.now()
    initial = {"date_purchased": now}
    form = PurchaseForm(request.POST or None, initial=initial)
    if form.is_valid():
        form.save()
        return redirect("index")

    context["form"] = form
    context["title"] = "Add New Purchase"
    return render(request, "add.html", context)


def add_game(request):
    context = {}
    form = GameForm(request.POST or None)
    if form.is_valid():
        form.save()
        return redirect("index")

    context["form"] = form
    context["title"] = "Add New Game"
    return render(request, "add.html", context)


def add_platform(request):
    context = {}
    form = PlatformForm(request.POST or None)
    if form.is_valid():
        form.save()
        return redirect("index")

    context["form"] = form
    context["title"] = "Add New Platform"
    return render(request, "add.html", context)


def index(request):
    context = {}
    context["total_duration"] = Session().duration_sum
    context["title"] = "Index"
    return render(request, "index.html", context)