<?php

namespace App\Http\Middleware;

use App\Models\PosLocation;
use App\Models\User;
use Closure;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\View;
use Symfony\Component\HttpFoundation\Response;

class SetActingAccount
{
    public function handle(Request $request, Closure $next): Response
    {
        if ($user = $request->user()) {
            if ($request->is('api/*')) {
                $accountId = (int) ($request->header('X-Ladill-Account') ?: $user->id);
            } else {
                $accountId = (int) $request->session()->get('ladill_account', $user->id);
            }

            if (! $user->canAccessAccount($accountId)) {
                $accountId = $user->id;
                if (! $request->is('api/*')) {
                    $request->session()->put('ladill_account', $accountId);
                }
            }

            $accountId = $this->preferEmployerAccount($request, $user, $accountId);

            $account = $accountId === $user->id ? $user : (User::find($accountId) ?? $user);

            $request->attributes->set('actingAccount', $account);

            if (! $request->is('api/*')) {
                View::share('actingAccount', $account);
                View::share('accessibleAccounts', $user->accessibleAccounts());
            }
        }

        return $next($request);
    }

    private function preferEmployerAccount(Request $request, User $user, int $accountId): int
    {
        if ($accountId !== $user->id) {
            return $accountId;
        }

        if (PosLocation::owned($user->public_id)->exists()) {
            return $accountId;
        }

        $membership = $user->posMemberships()->first();
        if (! $membership) {
            return $accountId;
        }

        $employer = User::where('public_id', $membership->owner_ref)->first();
        if ($employer && $user->canAccessAccount($employer->id)) {
            if (! $request->is('api/*')) {
                $request->session()->put('ladill_account', $employer->id);
            }

            return $employer->id;
        }

        return $accountId;
    }
}