from uuid import uuid4

from django.core.paginator import Paginator
from django.http import (
    HttpResponseRedirect,
    HttpResponseServerError,
    HttpResponseBadRequest,
)
from django.shortcuts import render, get_object_or_404

from deployment.forms import DeploymentForm
from deployment.models import Deployment


def index(request):
    deployments = Deployment.objects.filter(user=request.user.id)
    paginator = Paginator(deployments, 5)

    page_number = request.GET.get("page")
    page_obj = paginator.get_page(page_number)

    return render(request, "deployment/board.html", {"page_obj": page_obj})


def details(request, deployment_id):
    deployment = get_object_or_404(Deployment, id=deployment_id)

    if request.method == "POST":
        if deployment.status == deployment.RUNNING:
            return HttpResponseBadRequest("deployment is running")
        try:
            deployment.delete()
        except Exception as e:
            return HttpResponseServerError(e)
        return HttpResponseRedirect("/deployment")

    deployment = get_object_or_404(Deployment, id=deployment_id)
    return render(request, "deployment/details.html", {"deployment": deployment})


def create(request):
    if request.method == "POST":
        form = DeploymentForm(request.POST)
        if form.is_valid():
            try:
                Deployment.objects.create(
                    user=request.user, id=uuid4(), **form.cleaned_data
                )
            except Exception as e:
                return HttpResponseServerError(e)
            return HttpResponseRedirect("/deployment")
    else:
        form = DeploymentForm

    return render(request, "deployment/create.html", {"form": form})