<?php namespace Common\Billing;
use Carbon\Carbon;
use Common\Billing\Models\Price;
use DB;
use Illuminate\Database\Eloquent\Collection;
use Illuminate\Database\Eloquent\Relations\HasMany;
use LogicException;
/**
* Trait Billable
* @property-read Collection|Subscription[] $subscriptions
*/
trait Billable
{
public function subscribe(string $gateway, string $gatewayId, Price $price): Subscription
{
if (Subscription::where('gateway_id', $gatewayId)->exists()) {
throw new LogicException(__('This subscription ID already exists'));
}
if ($price->interval === 'year') {
$renewsAt = Carbon::now()->addYears($price->interval_count);
} elseif ($price->interval === 'week') {
$renewsAt = Carbon::now()->addWeeks($price->interval_count);
} else {
$renewsAt = Carbon::now()->addMonths($price->interval_count);
}
$subscription = $this->subscriptions()->create([
'price_id' => $price->id,
'product_id' => $price->product_id,
'ends_at' => null,
'renews_at' => $renewsAt,
'gateway_name' => $gateway,
'gateway_id' => $gatewayId,
]);
$this->load('subscriptions');
return $subscription;
}
public function subscribed(): bool
{
$subscription = $this->subscriptions->first(function (
Subscription $sub
) {
return $sub->valid();
});
return !is_null($subscription);
}
public function subscriptions(): HasMany
{
// always return subscriptions that are not attached to any gateway last
return $this->hasMany(Subscription::class, 'user_id')->orderBy(
DB::raw('FIELD(gateway_name, "none")'),
'asc',
);
}
}