RequestController.php

<?php

namespace App\Http\Controllers;

use App\Enums\RequestErrors;
use App\Enums\RequestStates;
use App\Exceptions\InvalidRequestOperation;
use App\Http\Requests\RequestRequest;
use App\Models\RequestModel;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;

class RequestController extends Controller
{
    /**
     * GET mode: signee - view requests where user is signee, applicant - view requests where user is the applicant
     * GET state: RequestStates, filter queries based on state
     */
    public function index(Request $request)
    {
        $authUser = Auth::user();
        $mode = $request->input("mode", "signee");
        $state = $request->input("state");
        if ($mode == "signee") {
            $requests = RequestModel::where("state", $state ?? RequestStates::PENDING)->get()->filter(
                function ($request) use ($authUser) {
                    return $request->currentSignee()->user_id == $authUser->id || $authUser->isAdmin();
                }
            );
        } else {
            $profile = $authUser->getProfile();
            $requests = RequestModel::where("primary_value", $profile->getKey());
            if ($state) {
                $requests = $requests->where("state", $state);
            }
            $requests = $requests->get();
        }

        return view("request.index", ["requests" => $requests]);
    }

    public function update(RequestRequest $request)
    {
        try {
            $thisRequest = $request->requestInDb;

            $newStatus = $request->json("state");
            $remark = $request->json("remark");

            if ($newStatus == RequestStates::APPROVED && $thisRequest->setNextSignee($remark)) {
                $thisRequest->performUpdation();
            } elseif ($newStatus == RequestStates::REJECTED) {
                $thisRequest->reject($remark);
            }
            return response("OK");
        } catch (InvalidRequestOperation $e) {
            if ($e->getCode() == RequestErrors::ATTEMPT_TO_UPDATE_NON_PENDING_REQUEST) {
                abort(400, "This request is " . $thisRequest->state);
            } else {
                abort(500, "Oops, something is wrong with the server, please try again later");
            }
        }
    }
}