<?php

namespace App\Services\Notification\Traits;

use App\Models\Action;
use App\Models\Approval;
use App\Models\Enums\ApprovalMode;
use App\Models\Enums\ObjectAction;

trait ObjectActionApprovalNotificationUserHelper
{
    protected function objectActionApprovalNotificationUserIDs(Approval $approval, Action $action): array
    {
        $objectAction = ObjectAction::tryFrom($action->action);

        $approvalUserIDs = [];
        $notifiedUserIDs = [];

        if (in_array($objectAction, [ObjectAction::APPROVAL_REQUEST, ObjectAction::APPROVED_TO_NEXT_NODE])) {
            $approvalUserIDs = $this->getApprovedToNextNodeUsers($approval, $action);
        }

        if (! in_array($objectAction, [ObjectAction::APPROVAL_REQUEST])) {
            $notifiedUserIDs = [$approval->created_by];
        }

        return [$approvalUserIDs, $notifiedUserIDs];
    }


    protected function getApprovedToNextNodeUsers(Approval $approval, Action $action)
    {
        $approvalFlow = $approval->approvalFlow()->first();
        if (! $approvalFlow) {
            return [];
        }

        $nextNode = isset($action->extra_fields['next'])
            ? $approvalFlow->nodes[$action->extra_fields['next']]
            : [];

        return match (ApprovalMode::tryFrom($action->extra_fields['approval_mode'])) {
            ApprovalMode::ALTERNATIVE_APPROVAL, ApprovalMode::COUNTERSIGNATURE => $nextNode['approval_users'] ?? [],
            ApprovalMode::SEQUENTIAL_APPROVAL => isset($action->extra_fields['next_sequential_user']) ? [$action->extra_fields['next_sequential_user']] : [],
            default => [],
        };
    }
}