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<?php
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namespace Tylercd100\LERN\Components;
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use Auth;
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use Exception;
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use Illuminate\Support\Facades\Input;
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use Monolog\Handler\HandlerInterface;
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use Monolog\Logger;
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use Request;
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use Tylercd100\LERN\Exceptions\NotifierFailedException;
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use Tylercd100\Notify\Drivers\FromConfig as Notify;
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use View;
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class Notifier extends Component
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{
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protected $config;
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protected $log;
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protected $messageCb;
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protected $subjectCb;
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protected $contextCb;
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/**
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* You can provide a Monolog Logger instance to use in the constructor
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* @param Logger|null $log Logger instance to use
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*/
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public function __construct(Logger $log = null)
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{
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if ($log === null) {
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$log = new Logger(config('lern.notify.channel'));
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}
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$this->config = config('lern.notify');
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$this->log = $log;
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}
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/**
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* Transforms a value into a closure that returns itself when called
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* @param callable|string $cb The value that you want to wrap in a closure
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* @return callable
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*/
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private function wrapValueInClosure($cb)
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{
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if (is_callable($cb)) {
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return $cb;
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} else {
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return function () use ($cb) { return $cb; };
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}
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}
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/**
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* Set a string or a closure to be called that will generate the message body for the notification
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* @param callable|string $cb A closure or string that will be set for the message
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* @return $this
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*/
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public function setMessage($cb)
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{
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$this->messageCb = $this->wrapValueInClosure($cb);
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return $this;
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}
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/**
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* Returns the result of the message closure
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* @param Exception $e The Exception instance that you want to build the message around
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* @return string The message string
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*/
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public function getMessage(Exception $e)
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{
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$msg = $this->getMessageViaView($e);
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if ($msg === false) {
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$msg = $this->getMessageViaCallback($e);
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}
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if ($msg === false) {
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$msg = $this->getMessageViaDefault($e);
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}
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return $msg;
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}
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/**
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* Gets a basic Exception message
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* @param Exception $e The Exception instance that you want to build the message around
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* @return String Returns the message string
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*/
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public function getMessageViaDefault(Exception $e)
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{
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$msg = get_class($e)." was thrown! \n".$e->getMessage();
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if ($this->config['includeExceptionStackTrace'] === true) {
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$msg .= "\n\n".$e->getTraceAsString();
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}
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return $msg;
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}
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/**
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* Gets the Exception message using a callback if it is set
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* @param Exception $e The Exception instance that you want to build the message around
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* @return String|false Returns the message string or false
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*/
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public function getMessageViaCallback(Exception $e)
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{
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if (is_callable($this->messageCb)) {
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return $this->messageCb->__invoke($e);
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}
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return false;
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}
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/**
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* Gets the Exception message using a Laravel view file
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* @param Exception $e The Exception instance that you want to build the message around
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* @return String|false Returns the message string or false
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*/
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public function getMessageViaView(Exception $e)
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{
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$path = $this->config["view"];
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if (!empty($path) && View::exists($path)) {
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return View::make($path, [
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"exception" => $e,
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"url" => Request::url(),
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"method" => Request::method(),
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"input" => Input::all(),
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"user" => Auth::user(),
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])->render();
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}
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return false;
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}
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/**
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* Set a string or a closure to be called that will generate the subject line for the notification
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* @param callable|string $cb A closure or string that will be set for the subject line
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* @return $this
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*/
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public function setSubject($cb)
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{
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$this->subjectCb = $this->wrapValueInClosure($cb);
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return $this;
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}
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/**
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* Returns the result of the subject closure
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* @param Exception $e The Exception instance that you want to build the subject around
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* @return string The subject string
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*/
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public function getSubject(Exception $e)
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{
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if (is_callable($this->subjectCb)) {
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return $this->subjectCb->__invoke($e);
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} else {
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return get_class($e);
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}
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}
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/**
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* Set an array or a closure to be called that will generate the context array for the notification
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* @param callable|array $cb A closure or array that will be set for the context
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* @return $this
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*/
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public function setContext($cb)
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{
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$this->contextCb = $this->wrapValueInClosure($cb);
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return $this;
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}
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/**
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* Returns the result of the context closure
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* @param Exception $e The Exception instance that you want to build the context around
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* @return array The context array
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*/
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public function getContext(Exception $e, $context = [])
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{
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//This needs a better solution. How do I set specific context needs for different drivers?
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if (in_array('pushover', $this->config['drivers'])) {
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$context['sound'] = $this->config['pushover']['sound'];
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}
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// Call the callback or return the default
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if (is_callable($this->contextCb)) {
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return $this->contextCb->__invoke($e, $context);
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} else {
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return $context;
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}
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}
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/**
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* Pushes on another Monolog Handler
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* @param HandlerInterface $handler The handler instance to add on
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* @return Notifier Returns this
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*/
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public function pushHandler(HandlerInterface $handler) {
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$this->log->pushHandler($handler);
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return $this;
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}
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/**
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* Triggers the Monolog Logger instance to log an error to all handlers
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* @param Exception $e The exception to use
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* @param array $context Additional information that you would like to pass to Monolog
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* @return bool
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* @throws NotifierFailedException
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*/
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public function send(Exception $e, array $context = [])
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{
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if ($this->shouldntHandle($e)) {
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return false;
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}
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$message = $this->getMessage($e);
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$subject = $this->getSubject($e);
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$context = $this->getContext($e, $context);
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try {
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$notify = new Notify($this->config, $this->log, $subject);
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$level = (array_key_exists('log_level', $this->config) && !empty($this->config['log_level']))
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? $this->config['log_level']
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: 'critical';
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$notify->{$level}($message, $context);
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return true;
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} catch (Exception $e) {
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$code = (is_int($e->getCode()) ? $e->getCode() : 0);
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throw new NotifierFailedException($e->getMessage(), $code, $e);
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}
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}
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}
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tylercd100 /
lern
