from django.shortcuts import render, get_object_or_404, HttpResponse, HttpResponseRedirect
from call.forms import CreatureForm
from django.views import generic
from .models import Creature
from django.urls import reverse
# from io import StringIO
from PIL import Image
from random import randint, seed


def index(request):
    """ Main page of call, with 2bitcharactergenerator, receives POST to save a new creature """
    if request.method == "POST":
        print ("post", request.POST)
        print ("files", request.FILES)
        form = CreatureForm(request.POST, request.FILES)
        # form = CreatureFormNo(request.POST, request.FILES)
        # formset = AuthorFormSet(request.POST, request.FILES)
        if form.is_valid():
            print ("FORM IS VALID")
            form.save()
            # return HttpResponseRedirect(reverse("statement", args=(form.instance.id,)))
            # do something.
            return HttpResponse("ok")
        else:
            print ("FORM NOT VALID")
    else:
        form = CreatureForm()
    return render(request, "call/index.html", {"form": form})

class Guestbook(generic.ListView):
    """ public guestbook page """
    paginate_by = 20
    model=Creature
    template_name = "call/guestbook.html"
    queryset = Creature.objects.filter(published=True)

class CreatureList(generic.ListView):
    """ public guestbook page """
    paginate_by = 20
    model=Creature
    template_name = "call/creature_list.html"
    queryset = Creature.objects.filter(published=True)

def creature_detail(request, creature_id):
    """ Generates Pixelated PNG of creature """ 
    context = {}
    context['creature'] = get_object_or_404(Creature, pk=creature_id)
    context['cell'] = int(request.GET.get("cell", "0"))
    context['scale'] = int(request.GET.get("scale", "6"))
    context['width'] = int(request.GET.get("width", "432"))
    context['height'] = int(request.GET.get("height", "768"))
    seed(creature_id)

    context['bg_hue'] = randint(0, 360)
    context['bg_sat'] = 100
    context['bg_lightness'] = randint(50, 100)

    # context['bg_hue'] = 0 # randint(0, 360)
    # context['bg_sat'] = 0 # 100
    # context['bg_lightness'] = 66 # randint(50, 100)

    return render(request, "call/creature_detail.html", context)

def creature_frame (request, creature_id):
    """ Generates Pixelated PNG of creature """ 
    cell = int(request.GET.get("cell", "0"))
    creature = get_object_or_404(Creature, pk=creature_id)
    im = Image.open(creature.image.path)
    response = HttpResponse(content_type="image/png")
    scale = int(request.GET.get("scale", "6")) # 24
    # limit from 1-100
    scale = max(1, min(100, scale))
    im = im.crop((16*cell, 0, (16*cell)+16, 16))
    w, h = im.size
    im = im.resize((w*scale,h*scale), resample=Image.NEAREST)
    im.save(response, "PNG")
    #im_with_background = Image.new("RGBA", (w*scale, h*scale), (128,0,0))
    #im_with_background.paste(im, mask=im)
    #im_with_background.save(response, "PNG")
    return response

def call_block(request):
    """ Call text for animation """ 
    context = {}
    context['width'] = int(request.GET.get("width", "432"))
    context['height'] = int(request.GET.get("height", "768"))

    # context['bg_hue'] = randint(0, 360)
    # context['bg_sat'] = 100
    # context['bg_lightness'] = randint(50, 100)

    context['bg_hue'] = 0 # randint(0, 360)
    context['bg_sat'] = 0 # 100
    context['bg_lightness'] = 66 # randint(50, 100)

    return render(request, "call/call_block.html", context)