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

from .forms import ThingFormSet
from .models import Box, Thing


def index(request):
    """Simple index page."""
    html = '<h1>LabHelper</h1><p><a href="/search/">Search Things</a> | <a href="/admin/">Admin</a></p>'
    return HttpResponse(html)


def box_detail(request, box_id):
    """Display contents of a box."""
    box = get_object_or_404(Box, pk=box_id)
    things = box.things.select_related('thing_type').all()
    return render(request, 'boxes/box_detail.html', {
        'box': box,
        'things': things,
    })


def thing_detail(request, thing_id):
    """Display details of a thing."""
    thing = get_object_or_404(
        Thing.objects.select_related('thing_type', 'box', 'box__box_type'),
        pk=thing_id
    )
    return render(request, 'boxes/thing_detail.html', {'thing': thing})


def search(request):
    """Search page for things."""
    return render(request, 'boxes/search.html')


def search_api(request):
    """AJAX endpoint for searching things."""
    query = request.GET.get('q', '').strip()
    if len(query) < 2:
        return JsonResponse({'results': []})

    things = Thing.objects.filter(
        name__icontains=query
    ).select_related('thing_type', 'box')[:50]

    results = [
        {
            'id': thing.id,
            'name': thing.name,
            'type': thing.thing_type.name,
            'box': thing.box.id,
            'description': thing.description[:100] if thing.description else '',
        }
        for thing in things
    ]
    return JsonResponse({'results': results})


def add_things(request, box_id):
    """Add multiple things to a box at once."""
    box = get_object_or_404(Box, pk=box_id)
    
    success_message = None
    
    if request.method == 'POST':
        formset = ThingFormSet(request.POST)
        
        if formset.is_valid():
            things = formset.save(commit=False)
            created_count = 0
            for thing in things:
                if thing.name or thing.thing_type or thing.description or thing.picture:
                    thing.box = box
                    thing.save()
                    created_count += 1
            if created_count > 0:
                success_message = f'Added {created_count} thing{"s" if created_count > 1 else ""} successfully.'
            formset = ThingFormSet()
    
    return render(request, 'boxes/add_things.html', {
        'box': box,
        'formset': formset,
        'success_message': success_message,
    })