import uuid

from django.contrib.auth.mixins import LoginRequiredMixin
from django.http import HttpResponseBadRequest
from django.shortcuts import render
from django.views import View
from rest_framework.parsers import FormParser
from rest_framework.views import APIView

from core.forms import AccountForm
from core.models import Account
from core.util import logs

log = logs.get_logger(__name__)


def get_accounts(user):
    accounts = Account.objects.filter(user=user)
    return accounts


class AccountInfo(LoginRequiredMixin, View):
    VIEWABLE_FIELDS_MODEL = ["name", "exchange", "api_key", "sandbox"]
    allowed_types = ["modal", "widget", "window", "page"]
    window_content = "window-content/account-info.html"

    def get(self, request, type, account_id):
        """
        Get the account details.
        :param account_id: The id of the account.
        """
        if type not in self.allowed_types:
            return HttpResponseBadRequest
        template_name = f"wm/{type}.html"
        unique = str(uuid.uuid4())[:8]
        try:
            account = Account.objects.get(id=account_id, user=request.user)
        except Account.DoesNotExist:
            message = "Account does not exist"
            message_class = "danger"
            context = {
                "message": message,
                "message_class": message_class,
                "window_content": self.window_content,
            }
            return render(request, template_name, context)

        live_info = dict(account.get_account())
        account_info = account.__dict__
        account_info = {
            k: v for k, v in account_info.items() if k in self.VIEWABLE_FIELDS_MODEL
        }

        if type == "page":
            type = "modal"
        context = {
            "db_info": account_info,
            "live_info": live_info,
            "account_id": account_id,
            "type": type,
            "unique": unique,
            "window_content": self.window_content,
        }

        return render(request, template_name, context)


class Accounts(LoginRequiredMixin, View):
    allowed_types = ["modal", "widget", "window", "page"]
    window_content = "window-content/accounts.html"

    async def get(self, request, type):
        if type not in self.allowed_types:
            return HttpResponseBadRequest
        template_name = f"wm/{type}.html"
        unique = str(uuid.uuid4())[:8]
        accounts = get_accounts(request.user)
        if type == "page":
            type = "modal"
        context = {
            "title": f"Accounts ({type})",
            "unique": unique,
            "window_content": self.window_content,
            "items": accounts,
            "type": type,
        }
        return render(request, template_name, context)


class AccountAction(LoginRequiredMixin, APIView):
    allowed_types = ["modal", "widget", "window", "page"]
    window_content = "window-content/add-account.html"
    parser_classes = [FormParser]

    def get(self, request, type, account_id=None):
        """
        Get the form for adding or editing a account.
        :param account_id: The id of the account to edit. Optional.
        """
        if type not in self.allowed_types:
            return HttpResponseBadRequest
        template_name = f"wm/{type}.html"
        unique = str(uuid.uuid4())[:8]
        if account_id:
            try:
                account = Account.objects.get(id=account_id, user=request.user)
                form = AccountForm(instance=account)
            except Account.DoesNotExist:
                message = "Account does not exist"
                message_class = "danger"
                context = {
                    "message": message,
                    "message_class": message_class,
                    "window_content": self.window_content,
                }
                return render(request, template_name, context)
        else:
            form = AccountForm()
        if type == "page":
            type = "modal"
        context = {
            "form": form,
            "account_id": account_id,
            "type": type,
            "unique": unique,
            "window_content": self.window_content,
        }

        return render(request, template_name, context)

    def put(self, request, type, account_id=None):
        """
        Add or edit a account.
        :param account_id: The id of the account to edit. Optional.
        """
        if type not in self.allowed_types:
            return HttpResponseBadRequest
        message = None
        message_class = "success"

        if account_id:
            try:
                form = AccountForm(
                    request.data, instance=Account.objects.get(id=account_id)
                )
            except Account.DoesNotExist:
                message = "Account does not exist"
                message_class = "danger"
                context = {
                    "message": message,
                    "class": message_class,
                }
                return render(request, self.template_name, context)
        else:
            form = AccountForm(request.data)
        if form.is_valid():
            account = form.save(commit=False)
            account.user = request.user
            account.save()
            if account_id:
                message = f"Account {account_id} edited successfully"
            else:
                message = f"Account {account.id} added successfully"
        else:
            message = "Error adding account"
            message_class = "danger"

        accounts = get_accounts(request.user)

        context = {
            "items": accounts,
            "type": type,
        }
        if message:
            context["message"] = message
            context["class"] = message_class
        template_name = "partials/account-list.html"
        return render(request, template_name, context)

    def delete(self, request, type, account_id):
        """
        Delete a account.
        :param account_id: The id of the account to delete.
        """
        if type not in self.allowed_types:
            return HttpResponseBadRequest
        message = None
        message_class = "success"
        try:
            account = Account.objects.get(id=account_id, user=request.user)
            account.delete()
            message = "Account deleted successfully"
        except Account.DoesNotExist:
            message = "Error deleting account"
            message_class = "danger"

        accounts = get_accounts(request.user)

        context = {
            "items": accounts,
            "type": type,
        }
        if message:
            context["message"] = message
            context["class"] = message_class

        template_name = "partials/account-list.html"
        return render(request, template_name, context)