from django.shortcuts import render
from django.views import View
from django.http import HttpResponse, HttpResponseRedirect
from django.template.response import TemplateResponse
from django.contrib.auth.mixins import LoginRequiredMixin
import re
from .models import Track, Artist, Album, Vote, Background, Profile
from .utils import from_json, get_unvoted
from . import spotify
from .tasks import get_banter, get_and_dither_image

spt = spotify.Spotify()

class AuthView(View):
    def get(self, request):
        if request.user.is_authenticated:
            return HttpResponseRedirect('/vote/')
        else:
            return TemplateResponse(request, "Login.html", {})

class VoteView(LoginRequiredMixin, View):
    def get(self, request, undo=None):
        track = get_unvoted(request.user)
        if track and not track.album.image:
            get_and_dither_image(track.album.image_url, track.album, "image")
        return TemplateResponse(request, "Vote.html", {"track": track, "undo": undo})
    def post(self, request):
        try:
            spotify_id = self.request.POST['spotify_id']
            score = int(self.request.POST['vote'])
            score = min(max(-2, score), 2)
            track = Track.objects.get(pk=spotify_id)
            try:
                Vote.objects.get(user=request.user, track=track)
            except Vote.DoesNotExist:
                pass
            else:
                raise Exception(f"{request.user} already voted for {track}")
            vote = Vote.objects.create(track=track, user=request.user, points=score)
            return self.get(request, undo=vote)
        except Exception as e:
            print(e)

class NominateView(LoginRequiredMixin, View):
    def get(self, request):
        return TemplateResponse(request, "Nominate.html", {})
    def post(self, request):
        spotify_link = self.request.POST['spotify_link']
        m = re.match(r"^https:\/\/open.spotify.com\/track\/(\w+)\??", spotify_link)
        spotify_id = m.group(1)
        try:
            track = Track.all_tracks.get(pk=spotify_id)

            if track.old:
                return TemplateResponse(request, "Nominate.html", {
                    "warning": "Hey een klassieker.",
                    "nominated": track
                })
            return TemplateResponse(request, "Nominate.html", {
                "error": "Deze is al genomineerd dit jaar, probeer eens iets anders.",
                "nominated": track
            })
        except Track.DoesNotExist:
            json = spt.get_song_info(spotify_id)

            # Album artists
            album_artists = []
            for artist in json["album"]["artists"]:
                album_artists.append(from_json(Artist, artist))
            del json["album"]["artists"]

            # Album
            album = from_json(Album, json["album"])
            album.image_url = json["album"]["images"][0]["url"]
            album.save()
            del json["album"]
            for artist in album_artists:
                album.artists.add(artist)

            # Track artists
            track_artists = []
            for artist in json["artists"]:
                track_artists.append(from_json(Artist, artist))
            del json["artists"]

            # Track
            track = from_json(Track, json)
            for artist in track_artists:
                track.artists.add(artist)
            track.save()
            dup = track.is_duplicate_of()
            if dup:
                track.delete()
                return TemplateResponse(request, "Nominate.html", {
                    "error": f"Die hadden we al knul.",
                    "nominated": dup
                })
            track.album = album
            track.save()
            get_banter.delay(track.id)
            
            return TemplateResponse(request, "Nominate.html", {"nominated": track})

class SettingsView(LoginRequiredMixin, View):
    def get(self, request):
        backgrounds = Background.objects.all()
        print(backgrounds)
        (profile,created) = Profile.objects.get_or_create(user=request.user)
        context = {
            "backgrounds": backgrounds,
            "currentBackground": (profile.background.id if profile.background else 1)
        }
        return TemplateResponse(request, "Settings.html", context)
    def post(self, request):
        print(request.POST)
        try:
            bg = Background.objects.get(pk=request.POST['background'])
            print(f"{request.user} wants their background set to {bg}")
            (profile,_) = Profile.objects.get_or_create(user=request.user)
            print(profile)
            profile.background = bg
            profile.save()
        except:
            pass
        finally:
            return self.get(request)
    
class UndoView(LoginRequiredMixin, View):
    def get(self, request):
        return HttpResponseRedirect('/vote/')
    def post(self, request):
        spotify_id = self.request.POST['spotify_id']
        track = Track.objects.get(pk=spotify_id)
        vote = None
        try:
            vote = Vote.objects.get(user=request.user, track=track)
        except Vote.DoesNotExist:
            raise Exception(f"{request.user} did not vote for {track}")
        vote.delete()
        return HttpResponseRedirect('/vote/')