<?php

declare(strict_types=1);

namespace App\Http\Controllers\Api\V1;

use App\Enums\ShiftAssignmentStatus;
use App\Http\Controllers\Controller;
use App\Http\Requests\Api\V1\AssignShiftRequest;
use App\Http\Requests\Api\V1\StoreShiftRequest;
use App\Http\Requests\Api\V1\UpdateShiftRequest;
use App\Http\Resources\Api\V1\ShiftAssignmentResource;
use App\Http\Resources\Api\V1\ShiftResource;
use App\Models\Event;
use App\Models\FestivalSection;
use App\Models\Person;
use App\Models\Shift;
use App\Services\ShiftAssignmentService;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Resources\Json\AnonymousResourceCollection;
use Illuminate\Support\Facades\Gate;

final class ShiftController extends Controller
{
    public function __construct(
        private readonly ShiftAssignmentService $shiftAssignmentService,
    ) {}

    public function index(Event $event, FestivalSection $section): AnonymousResourceCollection
    {
        Gate::authorize('viewAny', [Shift::class, $event]);

        $shifts = $section->shifts()
            ->with(['timeSlot', 'location'])
            ->withCount(['shiftAssignments as filled_slots' => fn ($q) => $q->where('status', ShiftAssignmentStatus::APPROVED)])
            ->get();

        return ShiftResource::collection($shifts);
    }

    public function store(StoreShiftRequest $request, Event $event, FestivalSection $section): JsonResponse
    {
        Gate::authorize('create', [Shift::class, $event]);

        $shift = $section->shifts()->create($request->validated());
        $shift->load(['timeSlot', 'location']);

        return $this->created(new ShiftResource($shift));
    }

    public function update(UpdateShiftRequest $request, Event $event, FestivalSection $section, Shift $shift): JsonResponse
    {
        Gate::authorize('update', [$shift, $event, $section]);

        $shift->update($request->validated());
        $shift->load(['timeSlot', 'location']);

        return $this->success(new ShiftResource($shift->fresh()->load(['timeSlot', 'location'])));
    }

    public function destroy(Event $event, FestivalSection $section, Shift $shift): JsonResponse
    {
        Gate::authorize('delete', [$shift, $event, $section]);

        $shift->delete();

        return response()->json(null, 204);
    }

    public function assign(AssignShiftRequest $request, Event $event, FestivalSection $section, Shift $shift): JsonResponse
    {
        Gate::authorize('assign', [$shift, $event, $section]);

        $festivalEventId = $event->parent_event_id ?? $event->id;
        $person = Person::where('event_id', $festivalEventId)->findOrFail($request->validated('person_id'));
        $assignment = $this->shiftAssignmentService->assign($shift, $person, $request->user());

        return $this->created(new ShiftAssignmentResource($assignment));
    }

    public function claim(AssignShiftRequest $request, Event $event, FestivalSection $section, Shift $shift): JsonResponse
    {
        Gate::authorize('claim', [$shift, $event, $section]);

        $festivalEventId = $event->parent_event_id ?? $event->id;
        $person = Person::where('event_id', $festivalEventId)->findOrFail($request->validated('person_id'));
        $assignment = $this->shiftAssignmentService->claim($shift, $person);

        return $this->created(new ShiftAssignmentResource($assignment));
    }
}