from datetime import datetime

from django.shortcuts import get_object_or_404, render
from django.http import HttpResponse

from .models import Tool, Task, Event
from .forms import EventForm


def index(request):
    context = {
        'tools': Tool.objects.all(),
        'tasks': Task.objects.all(),
    }
    return render(request, 'tasks/index.djhtml', context)


def toolDetail(request, asset_tag):
    tool = get_object_or_404(Tool, asset_tag=asset_tag)
    tasks = tool.task_set.all()
    context = {
        'tool': tool,
        'tasks': tasks,
    }
    return render(request, 'tasks/toolDetail.djhtml', context)


def taskDetail(request, asset_tag, task_slug):
    tool = get_object_or_404(Tool, asset_tag=asset_tag)
    task = get_object_or_404(tool.task_set, slug=task_slug)
    events = task.event_set.all()

    if request.method == 'POST':
        if request.user.is_authenticated:
            event = Event(task=task)
            form = EventForm(request.POST, instance=event)
            if form.is_valid():
                form.save()
        else:
            form = EventForm(request.POST)
            form.add_error(None, "Not authenticated: please login")
    else:
        form = EventForm(initial={
            'date': datetime.now(),
            'user': request.user,
        })

    context = {
        'tool': tool,
        'task': task,
        'events': events,
        'form': form,
    }
    return render(request, 'tasks/taskDetail.djhtml', context)