<?php

abstract class App_Template {
	protected static $_status_names = array();
	protected static $_currencies = array();
	protected static $_currency_symbols = array();

	public static function get_status_name( $status ) {
		$status_names = wp_parse_args(
			self::get_status_names(),
			array(
				'active' => __( 'Active', 'appointments' ),
			)
		);
		return ! empty( $status_names[ $status ] )
			? $status_names[ $status ]
			: $status
		;
	}

	public static function get_status_names() {
		return appointments_get_statuses();
	}

	public static function get_currencies() {
		if ( ! self::$_currencies ) { self::$_currencies = apply_filters('app-template-currencies', array(
			'AUD' => __( 'AUD - Australian Dollar', 'appointments' ),
			'BRL' => __( 'BRL - Brazilian Real', 'appointments' ),
			'CAD' => __( 'CAD - Canadian Dollar', 'appointments' ),
			'CHF' => __( 'CHF - Swiss Franc', 'appointments' ),
			'CZK' => __( 'CZK - Czech Koruna', 'appointments' ),
			'DKK' => __( 'DKK - Danish Krone', 'appointments' ),
			'EUR' => __( 'EUR - Euro', 'appointments' ),
			'GBP' => __( 'GBP - Pound Sterling', 'appointments' ),
			'ILS' => __( 'ILS - Israeli Shekel', 'appointments' ),
			'HKD' => __( 'HKD - Hong Kong Dollar', 'appointments' ),
			'HUF' => __( 'HUF - Hungarian Forint', 'appointments' ),
			'JPY' => __( 'JPY - Japanese Yen', 'appointments' ),
			'MYR' => __( 'MYR - Malaysian Ringgits', 'appointments' ),
			'MXN' => __( 'MXN - Mexican Peso', 'appointments' ),
			'NOK' => __( 'NOK - Norwegian Krone', 'appointments' ),
			'NZD' => __( 'NZD - New Zealand Dollar', 'appointments' ),
			'PHP' => __( 'PHP - Philippine Pesos', 'appointments' ),
			'PLN' => __( 'PLN - Polish Zloty', 'appointments' ),
			'SEK' => __( 'SEK - Swedish Krona', 'appointments' ),
			'SGD' => __( 'SGD - Singapore Dollar', 'appointments' ),
			'TWD' => __( 'TWD - Taiwan New Dollars', 'appointments' ),
			'THB' => __( 'THB - Thai Baht', 'appointments' ),
			'TRY' => __( 'TRY - Turkish lira', 'appointments' ),
			'USD' => __( 'USD - U.S. Dollar', 'appointments' ),
			'RUB' => __( 'RUB - Russian Ruble', 'appointments' ),
		)); }
		return self::$_currencies;
	}

	public static function get_currency_symbol( $currency ) {
		if ( empty( $currency ) ) { return false; }
		if ( ! self::$_currency_symbols ) { self::$_currency_symbols = apply_filters('app-template-currency_symbols', array(
			'AUD' => __( 'AUD', 'appointments' ),
			'BRL' => __( 'BRL', 'appointments' ),
			'CAD' => __( 'CAD', 'appointments' ),
			'CHF' => __( 'CHF', 'appointments' ),
			'CZK' => __( 'CZK', 'appointments' ),
			'DKK' => __( 'DKK', 'appointments' ),
			'EUR' => __( 'EUR', 'appointments' ),
			'GBP' => __( 'GBP', 'appointments' ),
			'ILS' => __( 'ILS', 'appointments' ),
			'HKD' => __( 'HKD', 'appointments' ),
			'HUF' => __( 'HUF', 'appointments' ),
			'JPY' => __( 'JPY', 'appointments' ),
			'MYR' => __( 'MYR', 'appointments' ),
			'MXN' => __( 'MXN', 'appointments' ),
			'NOK' => __( 'NOK', 'appointments' ),
			'NZD' => __( 'NZD', 'appointments' ),
			'PHP' => __( 'PHP', 'appointments' ),
			'PLN' => __( 'PLN', 'appointments' ),
			'SEK' => __( 'SEK', 'appointments' ),
			'SGD' => __( 'SGD', 'appointments' ),
			'TWD' => __( 'TWD', 'appointments' ),
			'THB' => __( 'THB', 'appointments' ),
			'TRY' => __( 'TRY', 'appointments' ),
			'USD' => __( 'USD', 'appointments' ),
			'RUB' => __( 'RUB', 'appointments' ),
		)); }
		return ! empty( self::$_currency_symbols[ $currency ] )
			? self::$_currency_symbols[ $currency ]
			: false
		;
	}

	public static function get_default_confirmation_message() {
		return 'Dear CLIENT,

We are pleased to confirm your appointment for SITE_NAME.

Here are the appointment details:
Requested service: SERVICE
Date and time: DATE_TIME

SERVICE_PROVIDER will assist you for this service.

Kind regards,
SITE_NAME
';
	}

	public static function get_default_reminder_message() {
		return 'Dear CLIENT,

We would like to remind you of your appointment with SITE_NAME.

Here are your appointment details:
Requested service: SERVICE
Date and time: DATE_TIME

SERVICE_PROVIDER will assist you for this service.

Kind regards,
SITE_NAME
';
	}

	public static function get_default_removal_notification_message() {
		return 'Dear CLIENT,

We would like to inform you that your appointment with SITE_NAME on DATE_TIME has been removed.

Here are your appointment details:
Requested service: SERVICE
Date and time: DATE_TIME

Kind regards,
SITE_NAME
';
	}

	public static function get_default_removal_notification_subject() {
		return __( 'Appointment has been removed','appointments' );
	}

	public static function get_default_page_template( $tpl = false ) {
		$page_templates = array(
			'two_months' => '<td colspan="2">[app_monthly_schedule]</td></tr><td colspan="2">[app_monthly_schedule add="1"]</td></tr><tr><td colspan="2">[app_pagination step="2" month="1"]</td>',
			'one_month' => '<td colspan="2">[app_monthly_schedule]</td></tr><tr><td colspan="2">[app_pagination month="1"]</td>',
			'two_weeks' => '<td>[app_schedule]</td><td>[app_schedule add="1"]</td></tr><tr><td colspan="2">[app_pagination step="2"]</td>',
			'one_week' => '<td colspan="2">[app_schedule long="1"]</td></tr><tr><td colspan="2">[app_pagination]</td>',
		);
		$common = '<table><tbody>' .
			'<tr><td colspan="2">[app_my_appointments]</td></tr>' .
			'<tr><td>[app_services]</td><td>[app_service_providers]</td></tr>' .
			'<tr>PLACEHOLDER</tr>' .
			'<tr><td colspan="2">[app_login]</td></tr>' .
			'<tr><td colspan="2">[app_confirmation]</td></tr>' .
			'<tr><td colspan="2">[app_paypal]</td></tr>' .
		'</tbody></table>';
		$tpl = ! empty( $tpl ) && in_array( $tpl, array_keys( $page_templates ) )
			? $tpl
			: 'one_month'
		;

		$bit = ! empty( $page_templates[ $tpl ] )
			? $page_templates[ $tpl ]
			: $page_templates['one_month']
		;

		return str_replace( 'PLACEHOLDER', $bit, $common );
	}

	public static function admin_settings_tab( $tab = false ) {
		$tpl_tabs = array(
			'main' => 'settings-main',
			'gcal' => 'settings-gcal',
			'working_hours' => 'settings-working_hours',
			'exceptions' => 'settings-exceptions',
			'services' => 'settings-services',
			'workers' => 'settings-workers',
			'log' => 'view_log',
		);
		$callback_tabs = array(
			'addons' => array( 'App_AddonHandler', 'create_addon_settings' ),
		);
		$action_tabs = array(
			'custom1' => 'app_additional_tab1',
			'custom2' => 'app_additional_tab2',
			'custom3' => 'app_additional_tab3',
		);
		if ( in_array( $tab, array_keys( $tpl_tabs ) ) && ! empty( $tpl_tabs[ $tab ] ) ) {
			// Load up the template
			$file = self::_to_template_file( $tpl_tabs[ $tab ] );
			if ( ! empty( $file ) ) { require_once( $file ); }
		} else if ( in_array( $tab, array_keys( $callback_tabs ) ) && is_callable( $callback_tabs[ $tab ] ) ) {
			// Do the callback
			call_user_func( $callback_tabs[ $tab ] );
		} else if ( in_array( $tab, array_keys( $action_tabs ) ) && ! empty( $action_tabs[ $tab ] ) ) {
			// Perform action
			do_action( $action_tabs[ $tab ] );
		} else {
			// Do the default action
			do_action( 'app-settings-tabs', $tab );
		}

	}

	public static function admin_appointments_list() {
		$file = self::_to_template_file( 'appointment_list' );
		if ( ! empty( $file ) ) { require_once( $file ); }
	}

	public static function admin_my_appointments_list( $type = 'active' ) {
		$file = self::_to_template_file( 'my_appointments_list' );
		if ( ! empty( $file ) ) { require_once( $file ); }
	}

	public static function admin_transactions_list( $type = 'past' ) {
		$file = self::_to_template_file( 'transactions_list' );
		if ( ! empty( $file ) ) { require_once( $file ); }
	}

	public static function admin_my_transactions_list( $type = 'past' ) {
		$file = self::_to_template_file( 'my_transactions_list' );
		if ( ! empty( $file ) ) { require_once( $file ); }
	}

	private static function _to_template_file( $fragment ) {
		if ( empty( $fragment ) ) { return false; }
		$file = APP_PLUGIN_DIR . '/includes/templates/app-admin-' . preg_replace( '/[^-_a-z0-9]/i', '', $fragment ) . '.php';
		return file_exists( $file )
			? $file
			: false
		;
	}
}


abstract class App_Codec_Instance {

	abstract public function register ( $key );

	private $_positive_values = array(
		true,
	'true',
	'yes',
	'on',
	'1',
	);

	private $_negative_values = array(
		false,
	'false',
	'no',
	'off',
	'0',
	);

	protected function _arg_to_bool( $val ) {
		return in_array( $val, $this->_positive_values, true );
	}

	protected function _arg_to_int( $val ) {
		if ( ! is_numeric( $val ) ) { return 0; }
		return (int) $val;
	}

	protected function _arg_to_int_list( $val ) {
		if ( ! strpos( $val, ',' ) ) { return array(); }
		return array_filter( array_map( 'intval', array_map( 'trim', explode( ',', $val ) ) ) );
	}

	protected function _arg_to_string_list( $val ) {
		if ( ! strpos( $val, ',' ) ) { return array( $val ); }
		return array_filter( array_map( 'trim', explode( ',', $val ) ) );
	}
}


abstract class App_Codec {

	protected $_instances = array();
	protected $_running = array();

	/**
	 * Registers shortcode handlers.
	 */
	protected function _register() {
		foreach ( $this->_instances as $key => $codec ) {
			if ( ! class_exists( $codec ) ) { continue; }
			$code = new $codec;
			$code->register( $key );
			$this->_running[ $key ] = $code;
		}
	}
}

class App_Shortcodes extends App_Codec {

	private static $_me;

	public static function serve() {
		if ( ! empty( self::$_me ) ) { return false; }
		self::$_me = new App_Shortcodes;
		add_action( 'init', array( self::$_me, 'do_register' ) );
	}

	public function do_register() {
		$this->_instances = apply_filters( 'app-shortcodes-register', array() );
		$appointments = appointments();
		$appointments->shortcodes = array_merge( $appointments->shortcodes, $this->_instances );
		$this->_register();
	}

	/**
	 * @param $key
	 *
	 * @return App_Shortcode|bool
	 */
	public static function get_shortcode_instance( $key ) {
		if ( empty( self::$_me ) ) { return false; }
		return ! empty( self::$_me->_running[ $key ] )
			? self::$_me->_running[ $key ]
			: false
		;
	}
}

/**
 * General purpose macro expansion codec class
 */
class App_Macro_GeneralCodec {
	const FILTER_TITLE = 'title';
	const FILTER_BODY = 'body';

	protected $_macros = array(
		'LOGIN_PAGE',
		'REGISTRATION_PAGE',
	);

	protected $_appointment;

	public function get_macros() {
		return $this->_macros;
	}

	public function expand( $str, $filter = false ) {
		if ( ! $str ) {
			return $str;
		}
		foreach ( $this->_macros as $macro ) {
			$callback = false;
			$method = 'replace_' . strtolower( $macro );
			if ( is_callable( array( $this, $method ) ) ) {
				$callback = array( $this, $method );
				$str = preg_replace_callback(
					'/(?:^|\b)' . preg_quote( $macro, '/' ) . '(?:\b|$)/',
					$callback, $str
				);
			} else { $str = apply_filters( 'app-codec-macro_default-' . $method, $str, $this->_appointment, $filter ); }
		}
		if ( ! $filter || self::FILTER_TITLE == $filter ) { $str = wp_strip_all_tags( $str ); }
		if ( self::FILTER_BODY == $filter ) { $str = apply_filters( 'the_content', $str ); }
		return apply_filters( 'app-codec-expand', $str, $this->_appointment );
	}

	public function replace_login_page() {
		return '<a class="appointments-login_show_login" href="' . site_url( 'wp-login.php' ) . '">' . __( 'Login','appointments' ) . '</a>';
	}
	public function replace_registration_page() {
		return '<a class="appointments-login_show_login appointments-register" href="' . wp_registration_url() . '">' . __( 'Register','appointments' ) . '</a>';
	}
}


/**
 * Individual Macro expansion codec class.
 */
class App_Macro_Codec extends App_Macro_GeneralCodec {

	protected $_core;
	protected $_user;

	public function __construct( $app = false, $user_id = false ) {
		$this->_macros = apply_filters('app-codec-macros', array_merge($this->_macros, array(
			'START_DATE',
			'END_DATE',
			'SERVICE',
			'WORKER',
		)));
		$this->_appointment = $app ? $app : false;
		$this->_user = $user_id ? get_user_by( 'id', $user_id ) : false;

		global $appointments;
		$this->_core = $appointments;
	}

	public function set_user( $user ) {
		if ( is_object( $user ) ) { $this->_user = $user; }
	}


	public function replace_start_date() {
		return mysql2date( $this->_core->datetime_format, $this->_appointment->start );
	}

	public function replace_end_date() {
		return mysql2date( $this->_core->datetime_format, $this->_appointment->end );
	}

	public function replace_service() {
		return $this->_core->get_service_name( $this->_appointment->service );
	}

	public function replace_worker() {
		return appointments_get_worker_name( $this->_appointment->worker );
	}

	public function replace_user_name() {
		return $this->_user->display_name;
	}
}