# Import the local models
from .models import Offer, Gamer
# Django shortcuts for certain things
from django.shortcuts import render, get_object_or_404, redirect
# For catching permission errors
from django.http import HttpResponseForbidden
# For permitting only logged in users to see their private area
from django.contrib.auth.decorators import login_required
# For Steam Open ID handling
from urllib import parse
# For requesting the identification check
import requests
# For manually creating system users
from django.contrib.auth.models import User
# For getting the API interaction methods
from .steam_api import getUserInfo, updateInventory
# Import for manually logging in user after creation
from django.contrib.auth import login

from .forms import ChangeTradeUrl, CreateOffer


# HELPER
def validate_steam_login(params):
    steam_login_url_base = "https://steamcommunity.com/openid/login"

    new_params = params.copy()
    new_params["openid.mode"] = "check_authentication"

    r = requests.post(steam_login_url_base, data=new_params)

    if "is_valid:true" in r.text:
        return True
    return False


# STATIC PAGES
def help(request):
    return render(request, 'static_pages/help.html')


def imprint(request):
    return render(request, 'static_pages/imprint.html')


# PUBLIC AREA
def dashboard(request):
    return render(request, 'core/dashboard.html')


def offer_overview(request):
    return render(request, 'core/offer_overview.html', {'offers': Offer.objects.all()})


def offer(request, offerID):
    offer = get_object_or_404(Offer, id=offerID)
    return render(request, 'code/offer.html', {'offer': offer})


def search(request, filter):
    # TODO: Implement
    return render(request, 'core/filter.html')


# USER SIGNUP
def signup(request):
    steam_openid_url = 'https://steamcommunity.com/openid/login'
    u = {
        'openid.ns': "http://specs.openid.net/auth/2.0",
        'openid.identity': "http://specs.openid.net/auth/2.0/identifier_select",
        'openid.claimed_id': "http://specs.openid.net/auth/2.0/identifier_select",
        'openid.mode': 'checkid_setup',
        'openid.return_to': 'http://' + request.META['HTTP_HOST'] + '/signup_confirm',
        'openid.realm': 'http://' + request.META['HTTP_HOST'] + ''
    }

    query_string = parse.urlencode(u)
    auth_url = steam_openid_url + '?' + query_string
    return redirect(auth_url)


def signup_confirm(request):
    if validate_steam_login(request.GET):
        claimed_id = request.GET.get('openid.claimed_id')
        claimed_id = claimed_id.split('/')[-1]
        new_user, created = User.objects.get_or_create(username=claimed_id)

        if created:
            info = getUserInfo(claimed_id)
            Gamer.objects.create(
                steamid=claimed_id,
                system_user=new_user,
                communityvisibilitystate=(True if info['communityvisibilitystate'] == 3 else False),
                profilestate=info['profilestate'],
                personaname=info['personaname'],
                profileurl=info['profileurl'],
                avatar=info['avatar'],
                commentpermission=info['commentpermission'],
                timecreated=info['timecreated'] or None,
                loccountrycode=info['loccountrycode'] or None
            )
        login(request, new_user)
        return redirect(profile, steamID=claimed_id)
    return HttpResponseForbidden()


# USER AREA
@login_required
def offer_refresh(request, offerID):
    offer = get_object_or_404(Offer, id=offerID)
    # TODO Refresh Info
    return redirect(offer, offerID=offerID)


@login_required
def offer_delete(request, offerID):
    offer = get_object_or_404(Offer, id=offerID)
    if request.user == offer.offeror.system_user:
        offer.delete()
        return redirect(dashboard)
    return HttpResponseForbidden()


@login_required
def offer_create(request):
    form = CreateOffer(request.POST or None)
    if request.method == 'POST' and form.is_valid():
        form.offeror = request.user.gamer
        form.save()
    dude = get_object_or_404(Gamer, steamid=request.user.gamer.steamid)
    context = {
        'inventory': dude.inventory,
        'form': form
    }
    return render(request, 'core/offer_create.html', context)


@login_required
def profile(request, steamID):
    dude = get_object_or_404(Gamer, steamid=steamID)
    return render(request, 'profile/profile.html', {'gamer': dude, 'live_offers': Offer.objects.filter(offeror=dude).count()})


@login_required
def profile_inventory(request, steamID):
    dude = get_object_or_404(Gamer, steamid=steamID)
    return render(request, 'profile/inventory.html', {'gamer': dude})


@login_required
def profile_update(request, steamID):
    if request.user.steamid == steamID or request.user.is_staff:
        the_gamer = get_object_or_404(Gamer, steamid=steamID)
        info = getUserInfo(steamID)
        the_gamer.communityvisibilitystate = (True if info['communityvisibilitystate'] == 3 else False)
        the_gamer.profilestate = info['profilestate']
        the_gamer.personaname = info['personaname']
        the_gamer.profileurl = info['profileurl']
        the_gamer.avatar = info['avatar']
        the_gamer.commentpermission = info['commentpermission']
        if 'timecreated' in info:
            the_gamer.timecreated = info['timecreated']
        if 'loccountrycode' in info:
            the_gamer.loccountrycode = info['loccountrycode']
        the_gamer.save()
        return redirect(profile, steamID=steamID)
    return HttpResponseForbidden()


# PRIVATE AREA
@login_required
def me(request):
    return redirect(profile, steamID=request.user.gamer.steamid)


@login_required
def me_inventory(request):
    return redirect(profile_inventory, steamID=request.user.gamer.steamid)


@login_required
def profile_inventory_update(request, steamID):
    updateInventory(steamID)
    return redirect(profile_inventory, steamID=steamID)


@login_required
def me_settings(request):
    dude = get_object_or_404(Gamer, system_user=request.user)
    trade_form = ChangeTradeUrl(request.POST or None, instance=dude)
    if trade_form.is_valid() and request.method == 'POST':
        dude.tradeurl = trade_form.cleaned_data['tradeurl']
        dude.save()
    return render(request, 'profile/settings.html', {'gamer': dude, 'form': trade_form})