<?php

declare(strict_types=1);

namespace Core\Tenant\Concerns;

use Illuminate\Database\Eloquent\Relations\HasMany;

/**
 * Push notification-related relationships for the User model.
 *
 * Requires the Push module to be installed. All relationships are
 * guarded with class_exists() so the tenant package remains functional
 * even when the Push module is absent.
 *
 * @mixin \Core\Tenant\Models\User
 */
trait HasPushRelationships
{
    /**
     * Get all push websites owned by this user.
     */
    public function pushWebsites(): ?HasMany
    {
        $class = $this->resolvePushModel('PushWebsite');

        if (! $class) {
            return null;
        }

        return $this->hasMany($class);
    }

    /**
     * Get all push campaigns owned by this user.
     */
    public function pushCampaigns(): ?HasMany
    {
        $class = $this->resolvePushModel('PushCampaign');

        if (! $class) {
            return null;
        }

        return $this->hasMany($class);
    }

    /**
     * Get all push segments owned by this user.
     */
    public function pushSegments(): ?HasMany
    {
        $class = $this->resolvePushModel('PushSegment');

        if (! $class) {
            return null;
        }

        return $this->hasMany($class);
    }

    /**
     * Get all push flows owned by this user.
     */
    public function pushFlows(): ?HasMany
    {
        $class = $this->resolvePushModel('PushFlow');

        if (! $class) {
            return null;
        }

        return $this->hasMany($class);
    }

    /**
     * Resolve a Push model class, checking common namespaces.
     */
    protected function resolvePushModel(string $model): ?string
    {
        $candidates = [
            "Core\\Mod\\Push\\Models\\{$model}",
            "App\\Models\\{$model}",
        ];

        foreach ($candidates as $candidate) {
            if (class_exists($candidate)) {
                return $candidate;
            }
        }

        return null;
    }
}