<?php

namespace App\Http\Controllers\Supervisor;

use App\Http\Controllers\Controller;
use App\Http\Controllers\Supervisor\Concerns\ScopesSupervisorResources;
use App\Models\Supervisor;
use App\Services\DashboardService;
use Illuminate\Http\Request;
use Inertia\Inertia;
use Inertia\Response;

class DashboardController extends Controller
{
    use ScopesSupervisorResources;

    public function index(Request $request, DashboardService $dashboardService): Response
    {
        $supervisor = $this->supervisor();
        $establishmentFilter = $this->resolveDashboardEstablishmentFilter($request, $supervisor);
        $establishments = $this->establishmentOptions();

        return Inertia::render('Supervisor/Dashboard', [
            'kpis' => $dashboardService->getKpis($supervisor, $establishmentFilter),
            'alerts' => $dashboardService->getAlerts($supervisor, $establishmentFilter),
            'machinesOverview' => $dashboardService->getMachinesOverview($supervisor, $establishmentFilter),
            'machineStatusBreakdown' => $dashboardService->getMachineStatusBreakdown($supervisor, $establishmentFilter),
            'recentWashes' => $dashboardService->getRecentWashes($supervisor, $establishmentFilter),
            'context' => $dashboardService->getContext($supervisor, $establishmentFilter),
            'establishments' => $establishments,
            'showEstablishmentFilter' => $supervisor->establishment_id === null && count($establishments) > 1,
            'filters' => [
                'establishment_id' => $establishmentFilter,
            ],
        ]);
    }

    private function resolveDashboardEstablishmentFilter(Request $request, Supervisor $supervisor): ?int
    {
        if ($supervisor->establishment_id !== null) {
            return $supervisor->establishment_id;
        }

        if (! $request->filled('establishment_id')) {
            return null;
        }

        $establishmentId = (int) $request->input('establishment_id');
        $this->assertEstablishmentAccessible($establishmentId);

        return $establishmentId;
    }
}