<?php

class Appointments_Notifications_Reminder extends Appointments_Notification {

	/**
	 * @TODO Bad design, in this case we don't need $app_id
	 * @param $app_id
	 *
	 * @return bool
	 */
	public function send( $app_id ) {
		$options = appointments_get_options();

		if ( isset( $options['send_reminder'] ) && 'yes' == $options['send_reminder'] ) {
			$this->send_customer();
		}

		if ( isset( $options['send_reminder_worker'] ) && 'yes' == $options['send_reminder_worker'] ) {
			$this->send_worker();
		}
		
		self::record_sent( $app_id, 'reminder' );
		return true;
	}

	/**
	 * Try to send a reminder for a customer
	 *
	 * @param Appointments_Appointment $r
	 *
	 * @return bool
	 */
	private function send_customer() {
		$options = appointments_get_options();
		$reminder_time = isset( $options["reminder_time"] ) ? $options["reminder_time"] : false;
		if ( ! $reminder_time ) {
			return false;
		}

		$hours = explode( "," , trim( $options["reminder_time"] ) );

		if ( ! is_array( $hours ) || empty( $hours ) ) {
			return false;
		}

		$sent = array();

		foreach ( $hours as $hour ) {
			$results = appointments_get_unsent_appointments( $hour, 'user' );
			foreach ( $results as $r ) {
				/** @var Appointments_Appointment $r */
				$customer_email = $r->get_customer_email();
				if ( ! is_email( $customer_email ) ) {
					$this->manager->log( sprintf( __( 'Unable to send client reminder about the appointment ID:%s.', 'appointments' ), $r->ID ) );
					appointments_update_appointment( $r->ID, array( 'sent' => rtrim( $r->sent, ":" ) . ":" . trim( $hour ) . ":" ) );
					continue;
				}

				if ( ! in_array( $r->ID, $sent ) ) {
					$this->customer( $r->ID, $customer_email );
					$this->manager->log( sprintf( __( 'Reminder message sent to %s for appointment ID:%s', 'appointments' ), $customer_email, $r->ID ) );
					$sent[] = $r->ID;
				}

				appointments_update_appointment( $r->ID, array( 'sent' => rtrim( $r->sent, ":" ) . ":" . trim( $hour ) . ":" ) );
			}

		}

		return true;

	}

	/**
	 * Try to send a reminder for a worker
	 *
	 * @param Appointments_Appointment $r
	 *
	 * @return bool
	 */
	private function send_worker() {
		$appointments = appointments();
		$options = appointments_get_options();
		$reminder_time = isset( $options["reminder_time_worker"] ) ? $options["reminder_time_worker"] : false;
		if ( ! $reminder_time ) {
			return false;
		}

		$hours = explode( "," , trim( $options["reminder_time_worker"] ) );

		if ( ! is_array( $hours ) || empty( $hours ) ) {
			return false;
		}

		$sent = array();

		foreach ( $hours as $hour ) {
			$results = appointments_get_unsent_appointments( $hour, 'worker' );
			foreach ( $results as $r ) {
				$worker_email = $appointments->get_worker_email( $r->worker );

				if ( ! is_email( $worker_email ) ) {
					$this->manager->log( sprintf( __( 'Unable to send worker reminder about the appointment ID:%s.', 'appointments' ), $r->ID ) );
					appointments_update_appointment( $r->ID, array( 'sent_worker' => rtrim( $r->sent_worker, ":" ) . ":" . trim( $hour ) . ":" ) );
					continue;
				}

				if ( ! in_array( $r->ID, $sent ) ) {
					$this->worker( $r->ID, $worker_email );
					$this->manager->log( sprintf( __( 'Reminder message sent to %s for appointment ID:%s', 'appointments' ), $worker_email, $r->ID ) );
					$sent[] = $r->ID;
				}
				appointments_update_appointment( $r->ID, array( 'sent_worker' => rtrim( $r->sent_worker, ":" ) . ":" . trim( $hour ) . ":" ) );
			}

		}

		return true;

	}

	private function customer( $app_id, $email ) {
		$appointments = appointments();

		$r = appointments_get_appointment( $app_id );
		if ( ! $r ) {
			return false;
		}

		if ( ! is_email( $email ) ) {
			return false;
		}

		$template = $this->get_customer_template( $app_id, $email );
		if ( ! $template ) {
			return false;
		}

		$attachments = apply_filters( 'app_reminder_email_attachments', '' );

		$mail_result = wp_mail(
			$email,
			$template['subject'],
			$template['body'],
			$appointments->message_headers(),
			$attachments
		);

		if ( ! $mail_result ) {
			return false;
		}

		do_action( 'app_reminder_sent', $email, $app_id, $template['body'], $template['subject'] );

		return true;

	}

	private function worker( $app_id, $email ) {
		$appointments = appointments();

		$r = appointments_get_appointment( $app_id );
		if ( ! $r ) {
			return false;
		}

		if ( ! is_email( $email ) ) {
			return false;
		}

		$template = $this->get_worker_template( $app_id, $email );
		if ( ! $template ) {
			return false;
		}

		$mail_result = wp_mail(
			$email,
			$template['subject'],
			$template['body'],
			$appointments->message_headers()
		);

		if ( ! $mail_result ) {
			return false;
		}

		do_action( 'app_reminder_admin_sent', $email, $app_id, $template['body'], $template['subject'] );

		return true;

	}

	private function get_customer_template( $app_id, $email ) {
		$appointments = appointments();

		$r = appointments_get_appointment( $app_id );
		if ( ! $r ) {
			return false;
		}

		$options = appointments_get_options();

		$subject = $options["reminder_subject"];

		$args = array(
			'user'     => $r->name,
			'service'  => $appointments->get_service_name( $r->service ),
			'worker'   => appointments_get_worker_name( $r->worker ),
			'datetime' => $r->start,
			'price'    => $r->price,
			'deposit'  => $appointments->get_deposit( $r->price ),
			'phone'    => $r->phone,
			'note'     => $r->note,
			'address'  => $r->address,
			'email'    => $email,
			'city'     => $r->city
		);

		$subject = $this->replace_placeholders(	$subject, $args, 'reminder-subject', $r );

		$body = $options["reminder_message"];
		$body = $this->replace_placeholders( $body, $args, 'reminder-body', $r );

		$body = $appointments->add_cancel_link( $body, $app_id );
		$body = apply_filters( 'app_reminder_message', $body, $r, $r->ID );

		return array(
			'subject' => $subject,
			'body'    => $body
		);
	}

	private function get_worker_template( $app_id, $email ) {
		$r = appointments_get_appointment( $app_id );
		if ( ! $r ) {
			return false;
		}

		$provider_add_text = __( 'You are receiving this reminder message for your appointment as a provider. The below is a copy of what may have been sent to your client:', 'appointments' );
		$provider_add_text .= "\n\n\n";

		$customer_template = $this->get_customer_template( $app_id, $email );

		$subject = $customer_template['subject'];
		$body    = $provider_add_text . $customer_template['body'];

		return array(
			'subject' => $subject,
			'body'    => $body
		);
	}
}