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Wallet.php
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Wallet.php
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<?php
namespace App;
use App\User;
use Carbon\Carbon;
use Iatstuti\Database\Support\NullableFields;
use Illuminate\Database\Eloquent\Model;
/**
* The eloquent definition of a wallet -- a container with a chunk of change.
*
* A wallet is owned by an {@link \App\User}.
*
* @property integer $balance
*/
class Wallet extends Model
{
use NullableFields;
public $incrementing = false;
protected $keyType = 'string';
public $timestamps = false;
protected $attributes = [
'balance' => 0,
'currency' => 'CHF'
];
protected $fillable = [
'currency'
];
protected $nullable = [
'description',
];
protected $casts = [
'balance' => 'integer',
];
/**
* Add a controller to this wallet.
*
* @param \App\User $user The user to add as a controller to this wallet.
*
* @return void
*/
public function addController(User $user)
{
if (!$this->controllers->contains($user)) {
$this->controllers()->save($user);
}
}
public function chargeEntitlements($apply = true)
{
$charges = 0;
$discount = $this->discount ? $this->discount->discount : 0;
$discount = (100 - $discount) / 100;
foreach ($this->entitlements()->get()->fresh() as $entitlement) {
// This entitlement has been created less than or equal to 14 days ago (this is at
// maximum the fourteenth 24-hour period).
if ($entitlement->created_at > Carbon::now()->subDays(14)) {
continue;
}
// This entitlement was created, or billed last, less than a month ago.
if ($entitlement->updated_at > Carbon::now()->subMonthsWithoutOverflow(1)) {
continue;
}
// created more than a month ago -- was it billed?
if ($entitlement->updated_at <= Carbon::now()->subMonthsWithoutOverflow(1)) {
$diff = $entitlement->updated_at->diffInMonths(Carbon::now());
$cost = (int) ($entitlement->cost * $discount * $diff);
$charges += $cost;
// if we're in dry-run, you know...
if (!$apply) {
continue;
}
$entitlement->updated_at = $entitlement->updated_at->copy()->addMonthsWithoutOverflow($diff);
$entitlement->save();
// TODO: This would be better done out of the loop (debit() will call save()),
// but then, maybe we should use a db transaction
$this->debit($cost);
}
}
return $charges;
}
/**
* The discount assigned to the wallet.
*
* @return \Illuminate\Database\Eloquent\Relations\BelongsTo
*/
public function discount()
{
return $this->belongsTo('App\Discount', 'discount_id', 'id');
}
/**
* Calculate the expected charges to this wallet.
*
* @return int
*/
public function expectedCharges()
{
return $this->chargeEntitlements(false);
}
/**
* Remove a controller from this wallet.
*
* @param \App\User $user The user to remove as a controller from this wallet.
*
* @return void
*/
public function removeController(User $user)
{
if ($this->controllers->contains($user)) {
$this->controllers()->detach($user);
}
}
/**
* Add an amount of pecunia to this wallet's balance.
*
* @param int $amount The amount of pecunia to add (in cents).
*
* @return Wallet Self
*/
public function credit(int $amount): Wallet
{
$this->balance += $amount;
$this->save();
return $this;
}
/**
* Deduct an amount of pecunia from this wallet's balance.
*
* @param int $amount The amount of pecunia to deduct (in cents).
*
* @return Wallet Self
*/
public function debit(int $amount): Wallet
{
$this->balance -= $amount;
$this->save();
return $this;
}
/**
* Controllers of this wallet.
*
* @return \Illuminate\Database\Eloquent\Relations\BelongsToMany
*/
public function controllers()
{
return $this->belongsToMany(
'App\User', // The foreign object definition
'user_accounts', // The table name
'wallet_id', // The local foreign key
'user_id' // The remote foreign key
);
}
/**
* Entitlements billed to this wallet.
*
* @return \Illuminate\Database\Eloquent\Relations\HasMany
*/
public function entitlements()
{
return $this->hasMany('App\Entitlement');
}
/**
* The owner of the wallet -- the wallet is in his/her back pocket.
*
* @return \Illuminate\Database\Eloquent\Relations\BelongsTo
*/
public function owner()
{
return $this->belongsTo('App\User', 'user_id', 'id');
}
/**
* Payments on this wallet.
*
* @return \Illuminate\Database\Eloquent\Relations\HasMany
*/
public function payments()
{
return $this->hasMany('App\Payment');
}
}

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