Weak hands cannot be planted, meager skills have no foundation. Shallow wisdom is futile, how can one hope for a good name?扰扰从役倦，屑屑身事微。少壮轻年月，迟暮惜光辉。
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abstract class wfBaseAlert {

	public abstract function send();
}

class wfBlockAlert extends wfBaseAlert {

	private $IP;
	private $reason;
	private $secsToGo;


	/**
	 * wfBlockAlert constructor.
	 * @param $IP
	 * @param $reason
	 * @param $secsToGo
	 */
	public function __construct($IP, $reason, $secsToGo) {
		$this->IP = $IP;
		$this->reason = $reason;
		$this->secsToGo = $secsToGo;
	}

	public function send() {
		if (wfConfig::get('alertOn_block')) {
			$message = sprintf(/* translators: IP address. */ __('Wordfence has blocked IP address %s.', 'wordfence'), $this->IP) . "\n";
			$message .= sprintf(/* translators: Description of firewall action. */ __('The reason is: "%s".', 'wordfence'), wfWAFBlockI18n::getTranslatedBlockDescription($this->reason));
			if ($this->secsToGo > 0) {
				$message .= "\n" . sprintf(/* translators: Time until. */ __('The duration of the block is %s.', 'wordfence'), wfUtils::makeDuration($this->secsToGo, true));
			}
			wordfence::alert(sprintf(/* translators: IP address. */__('Blocking IP %s', 'wordfence'), $this->IP), $message, $this->IP);
		}
	}

}

class wfAutoUpdatedAlert extends wfBaseAlert {

	private $version;

	/**
	 * @param $version
	 */
	public function __construct($version) {
		$this->version = $version;
	}

	public function send() {
		if (wfConfig::get('alertOn_update') == '1' && $this->version) {
			wordfence::alert(sprintf(/* translators: Software version. */ __("Wordfence Upgraded to version %s", 'wordfence'), $this->version), sprintf(/* translators: Software version. */ __("Your Wordfence installation has been upgraded to version %s", 'wordfence'), $this->version), false);
		}
	}

}

class wfWafDeactivatedAlert extends wfBaseAlert {

	private $username;
	private $IP;

	/**
	 * @param $username
	 * @param $IP
	 */
	public function __construct($username, $IP) {
		$this->username = $username;
		$this->IP = $IP;
	}

	public function send() {
		if (wfConfig::get('alertOn_wafDeactivated')) {
			wordfence::alert(__('Wordfence WAF Deactivated', 'wordfence'), sprintf(/* translators: WP username. */__('A user with username "%s" deactivated the Wordfence Web Application Firewall on your WordPress site.', 'wordfence'), $this->username), $this->IP);
		}
	}

}

class wfWordfenceDeactivatedAlert extends wfBaseAlert {
	private $username;
	private $IP;

	/**
	 * @param $username
	 * @param $IP
	 */
	public function __construct($username, $IP) {
		$this->username = $username;
		$this->IP = $IP;
	}

	public function send() {
		if (wfConfig::get('alertOn_wordfenceDeactivated')) {
			wordfence::alert(__("Wordfence Deactivated", 'wordfence'), sprintf(/* translators: WP username. */ __("A user with username \"%s\" deactivated Wordfence on your WordPress site.", 'wordfence'), $this->username), $this->IP);
		}
	}

}

class wfLostPasswdFormAlert extends wfBaseAlert {

	private $user;
	private $IP;

	/**
	 * @param $user
	 * @param $IP
	 */
	public function __construct($user, $IP) {
		$this->user = $user;
		$this->IP = $IP;
	}

	public function send() {
		if (wfConfig::get('alertOn_lostPasswdForm')) {
			wordfence::alert(__("Password recovery attempted", 'wordfence'), sprintf(/* translators: Email address. */__("Someone tried to recover the password for user with email address: %s", 'wordfence'), wp_kses($this->user->user_email, array())), $this->IP);
		}
	}

}

class wfLoginLockoutAlert extends wfBaseAlert {

	private $IP;
	private $reason;

	/**
	 * @param $IP
	 * @param $reason
	 */
	public function __construct($IP, $reason) {
		$this->IP = $IP;
		$this->reason = $reason;
	}

	public function send() {
		if (wfConfig::get('alertOn_loginLockout')) {
			$message = sprintf(
				/* translators: 1. IP address. 2. Description of firewall action. */
				__('A user with IP address %1$s has been locked out from signing in or using the password recovery form for the following reason: %2$s.', 'wordfence'), $this->IP, wfWAFBlockI18n::getTranslatedBlockDescription($this->reason));
			if (wfBlock::lockoutDuration() > 0) {
				$message .= "\n" . sprintf(/* translators: Time until. */ __('The duration of the lockout is %s.', 'wordfence'), wfUtils::makeDuration(wfBlock::lockoutDuration(), true));
			}
			wordfence::alert(__('User locked out from signing in', 'wordfence'), $message, $this->IP);
		}
	}
}

class wfAdminLoginAlert extends wfBaseAlert {

	private $cookieName;
	private $username;
	private $IP;
	private $cookieValue;

	/**
	 * @param $cookieName
	 * @param $cookieValue
	 * @param $username
	 * @param $IP
	 */
	public function __construct($cookieName, $cookieValue, $username, $IP) {
		$this->cookieName = $cookieName;
		$this->cookieValue = $cookieValue;
		$this->username = $username;
		$this->IP = $IP;
	}

	public function send() {
		if (wfConfig::get('alertOn_adminLogin')) {
			$shouldAlert = true;
			$firstLogin = false;
			if (wfConfig::get('alertOn_firstAdminLoginOnly')) {
				if (isset($_COOKIE[$this->cookieName])) {
					$shouldAlert = !hash_equals($this->cookieValue, $_COOKIE[$this->cookieName]);
				}
				else {
					$firstLogin = true;
				}
			}

			if ($shouldAlert) {
				if ($firstLogin) {
					wordfence::alert(__("Admin Login", 'wordfence'), sprintf(/* translators: WP username. */ __("A user with username \"%s\" who has administrator access signed in to your WordPress site from a new device.", 'wordfence'), $this->username), $this->IP);
				}
				else {
					wordfence::alert(__("Admin Login", 'wordfence'), sprintf(/* translators: WP username. */ __("A user with username \"%s\" who has administrator access signed in to your WordPress site.", 'wordfence'), $this->username), $this->IP);
				}
			}
		}
	}
}

class wfNonAdminLoginAlert extends wfBaseAlert {

	private $cookieName;
	private $username;
	private $IP;
	private $cookieValue;

	/**
	 * @param $cookieName
	 * @param $cookieValue
	 * @param $username
	 * @param $IP
	 */
	public function __construct($cookieName, $cookieValue, $username, $IP) {
		$this->cookieName = $cookieName;
		$this->cookieValue = $cookieValue;
		$this->username = $username;
		$this->IP = $IP;
	}

	public function send() {
		if (wfConfig::get('alertOn_nonAdminLogin')) {
			$shouldAlert = true;
			$firstLogin = false;
			if (wfConfig::get('alertOn_firstNonAdminLoginOnly')) {
				if (isset($_COOKIE[$this->cookieName])) {
					$shouldAlert = !hash_equals($this->cookieValue, $_COOKIE[$this->cookieName]);
				}
				else {
					$firstLogin = true;
				}
			}

			if ($shouldAlert) {
				if ($firstLogin) {
					wordfence::alert(__("User login", 'wordfence'), sprintf(/* translators: WP username. */ __("A non-admin user with username \"%s\" signed in to your WordPress site from a new device.", 'wordfence'), $this->username), $this->IP);
				}
				else {
					wordfence::alert(__("User login", 'wordfence'), sprintf(/* translators: WP username. */ __("A non-admin user with username \"%s\" signed in to your WordPress site.", 'wordfence'), $this->username), $this->IP);
				}
			}
		}
	}
}

class wfBreachLoginAlert extends wfBaseAlert {

	private $username;
	private $lostPasswordUrl;
	private $supportUrl;
	private $IP;

	/**
	 * @param $username
	 * @param $lostPasswordUrl
	 * @param $supportUrl
	 * @param $IP
	 */
	public function __construct($username, $lostPasswordUrl, $supportUrl, $IP) {
		$this->username = $username;
		$this->lostPasswordUrl = $lostPasswordUrl;
		$this->supportUrl = $supportUrl;
		$this->IP = $IP;
	}

	public function send() {
		if (wfConfig::get('alertOn_breachLogin')) {
			wordfence::alert(__('User login blocked for insecure password', 'wordfence'), sprintf(
				/* translators: 1. WP username. 2. Reset password URL. 3. Support URL. */
				__('A user with username "%1$s" tried to sign in to your WordPress site. Access was denied because the password being used exists on lists of