from django.contrib.auth.mixins import LoginRequiredMixin
from django.shortcuts import render
from django.views import View
from mixins.views import (
    ObjectCreate,
    ObjectDelete,
    ObjectList,
    ObjectNameMixin,
    ObjectUpdate,
)

from core.forms import TradingTimeForm
from core.models import Strategy, TradingTime
from core.util import logs

log = logs.get_logger(__name__)


# Trend directions
class TrendDirectionList(LoginRequiredMixin, ObjectList):
    list_template = "partials/trend-direction-list.html"
    page_title = "List of trend directions for a strategy"
    page_subtitle = None

    context_object_name_singular = "trend direction"
    context_object_name = "trend directions"

    list_url_name = "trenddirections"
    list_url_args = ["type", "strategy_id"]

    def get_queryset(self, **kwargs):
        strategy_id = kwargs.get("strategy_id", None)
        self.extra_context = {"strategy_id": strategy_id}
        try:
            strategy = Strategy.objects.get(id=strategy_id, user=self.request.user)
        except Strategy.DoesNotExist:
            context = {"message": "Strategy does not exist", "class": "danger"}
            return self.render_to_response(context)
        return strategy.trends


class TrendDirectionFlip(LoginRequiredMixin, ObjectNameMixin, View):
    template_name = "mixins/partials/notify.html"
    model = Strategy

    def get(self, request, strategy_id, symbol):
        try:
            strategy = Strategy.objects.get(id=strategy_id, user=request.user)
        except Strategy.DoesNotExist:
            context = {"message": "Strategy does not exist", "class": "danger"}
            return render(request, self.template_name, context)
        if symbol not in strategy.trends:
            context = {"message": "Trend direction does not exist", "class": "danger"}
            return render(request, self.template_name, context)
        if strategy.trends[symbol] == "buy":
            strategy.trends[symbol] = "sell"
        elif strategy.trends[symbol] == "sell":
            strategy.trends[symbol] = "buy"
        strategy.save()
        context = {"message": "Trend direction updated", "class": "success"}
        return render(request, self.template_name, context)


class TrendDirectionDelete(LoginRequiredMixin, ObjectNameMixin, View):
    template_name = "mixins/partials/notify.html"
    model = Strategy

    def delete(self, request, strategy_id, symbol):
        try:
            strategy = Strategy.objects.get(id=strategy_id, user=request.user)
        except Strategy.DoesNotExist:
            context = {"message": "Strategy does not exist", "class": "danger"}
            return render(request, self.template_name, context)
        if symbol not in strategy.trends:
            context = {"message": "Trend direction does not exist", "class": "danger"}
            return render(request, self.template_name, context)
        del strategy.trends[symbol]
        strategy.save()
        context = {"message": "Trend direction deleted", "class": "success"}
        return render(request, self.template_name, context)


# Trading times


class TradingTimeList(LoginRequiredMixin, ObjectList):
    list_template = "partials/trading-time-list.html"
    model = TradingTime
    page_title = "List of allowed trading times, used as options for a strategy"
    page_subtitle = "Add times here in order to permit trading."

    list_url_name = "tradingtimes"
    list_url_args = ["type"]

    submit_url_name = "tradingtime_create"


class TradingTimeCreate(LoginRequiredMixin, ObjectCreate):
    model = TradingTime
    form_class = TradingTimeForm

    submit_url_name = "tradingtime_create"


class TradingTimeUpdate(LoginRequiredMixin, ObjectUpdate):
    model = TradingTime
    form_class = TradingTimeForm

    submit_url_name = "tradingtime_update"


class TradingTimeDelete(LoginRequiredMixin, ObjectDelete):
    model = TradingTime