<?php
namespace W3TC;



class Cdn_RackSpaceCdn_Popup {
	static public function w3tc_ajax() {
		$o = new Cdn_RackSpaceCdn_Popup();

		add_action( 'w3tc_ajax_cdn_rackspace_intro',
			array( $o, 'w3tc_ajax_cdn_rackspace_intro' ) );
		add_action( 'w3tc_ajax_cdn_rackspace_intro_done',
			array( $o, 'w3tc_ajax_cdn_rackspace_intro_done' ) );
		add_action( 'w3tc_ajax_cdn_rackspace_regions_done',
			array( $o, 'w3tc_ajax_cdn_rackspace_regions_done' ) );
		add_action( 'w3tc_ajax_cdn_rackspace_services_done',
			array( $o, 'w3tc_ajax_cdn_rackspace_services_done' ) );
		add_action( 'w3tc_ajax_cdn_rackspace_service_create_done',
			array( $o, 'w3tc_ajax_cdn_rackspace_service_create_done' ) );
		add_action( 'w3tc_ajax_cdn_rackspace_service_get_state',
			array( $o, 'w3tc_ajax_cdn_rackspace_service_get_state' ) );
		add_action( 'w3tc_ajax_cdn_rackspace_service_created_done',
			array( $o, 'w3tc_ajax_cdn_rackspace_service_created_done' ) );
		add_action( 'w3tc_ajax_cdn_rackspace_service_actualize_done',
			array( $o, 'w3tc_ajax_cdn_rackspace_service_actualize_done' ) );

		add_action( 'w3tc_ajax_cdn_rackspace_configure_domains',
			array( $o, 'w3tc_ajax_cdn_rackspace_configure_domains' ) );
		add_action( 'w3tc_ajax_cdn_rackspace_configure_domains_done',
			array( $o, 'w3tc_ajax_cdn_rackspace_configure_domains_done' ) );

	}



	public function w3tc_ajax_cdn_rackspace_intro() {
		$c = Dispatcher::config();

		$details = array(
			'user_name' => $c->get_string( 'cdn.rackspace_cdn.user_name' ),
			'api_key' => $c->get_string( 'cdn.rackspace_cdn.api_key' )
		);

		include  W3TC_DIR . '/Cdn_RackSpaceCdn_Popup_View_Intro.php';
		exit();
	}



	public function w3tc_ajax_cdn_rackspace_intro_done() {
		$this->_render_cdn_rackspace_regions( array(
				'user_name' => $_REQUEST['user_name'],
				'api_key' => $_REQUEST['api_key'] ) );
	}



	private function _render_cdn_rackspace_regions( $details ) {
		$user_name = $details['user_name'];
		$api_key = $details['api_key'];

		try {
			$r = Cdn_RackSpace_Api_Tokens::authenticate( $user_name,
				$api_key );
		} catch ( \Exception $ex ) {
			$details = array(
				'user_name' => $user_name,
				'api_key' => $api_key,
				'error_message' => 'Can\'t authenticate: ' . $ex->getMessage()
			);
			include  W3TC_DIR . '/Cdn_RackSpaceCdn_Popup_View_Intro.php';
			exit();
		}

		$r['regions'] = Cdn_RackSpace_Api_Tokens::cdn_services_by_region(
			$r['services'] );

		$details['access_token'] = $r['access_token'];
		$details['region_descriptors'] = $r['regions'];
		// avoid fights with quotes, magic_quotes may break randomly
		$details['region_descriptors_serialized'] =
			strtr( json_encode( $r['regions'] ), '"\\', '!^' );

		include  W3TC_DIR . '/Cdn_RackSpaceCdn_Popup_View_Regions.php';
		exit();
	}



	public function w3tc_ajax_cdn_rackspace_regions_done() {
		$user_name = $_REQUEST['user_name'];
		$api_key = $_REQUEST['api_key'];
		$access_token = $_REQUEST['access_token'];
		$region = Util_Request::get( 'region' );
		$region_descriptors = json_decode(
			strtr( $_REQUEST['region_descriptors'], '!^', '"\\' ), true );

		if ( !isset( $region_descriptors[$region] ) ) {
			return $this->_render_cdn_rackspace_regions( array(
					'user_name' => $user_name,
					'api_key' => $api_key,
					'error_message' => 'Please select region ' . $region
				) );
		}

		$api = new Cdn_RackSpace_Api_Cdn( array(
				'access_token' => $access_token,
				'access_region_descriptor' => $region_descriptors[$region],
				'new_access_required' => ''
			) );

		try {
			$services = $api->services();
		} catch ( \Exception $ex ) {
			$details = array(
				'user_name' => $user_name,
				'api_key' => $api_key,
				'error_message' => $ex->getMessage()
			);
			include  W3TC_DIR . '/Cdn_RackSpaceCdn_Popup_View_Intro.php';
			exit();
		}

		$details = array(
			'user_name' => $user_name,
			'api_key' => $api_key,
			'access_token' => $access_token,
			'access_region_descriptor_serialized' =>
			strtr( json_encode( $region_descriptors[$region] ), '"\\', '!^' ),
			'region' => $region,
			// avoid fights with quotes, magic_quotes may break randomly
			'services' => $services
		);

		include  W3TC_DIR . '/Cdn_RackSpaceCdn_Popup_View_Services.php';
		exit();
	}



	public function w3tc_ajax_cdn_rackspace_services_done() {
		$user_name = $_REQUEST['user_name'];
		$api_key = $_REQUEST['api_key'];
		$access_token = $_REQUEST['access_token'];
		$access_region_descriptor = json_decode(
			strtr( $_REQUEST['access_region_descriptor'], '!^', '"\\' ), true );
		$region = $_REQUEST['region'];
		$service = Util_Request::get( 'service' );

		if ( !empty( $service ) ) {
			$this->_render_service_actualize( array(
					'user_name' => $user_name,
					'api_key' => $api_key,
					'access_token' => $access_token,
					'access_region_descriptor_serialized' =>
					strtr( json_encode( $access_region_descriptor ), '"\\', '!^' ),
					'region' => $region,
					'service_id' => $service
				) );
			exit();
		}

		$home_url = get_home_url();
		$parsed = parse_url( $home_url );

		$is_https = ( $parsed['scheme'] == 'https' );

		$details = array(
			'user_name' => $user_name,
			'api_key' => $api_key,
			'access_token' => $access_token,
			'access_region_descriptor_serialized' =>
			strtr( json_encode( $access_region_descriptor ), '"\\', '!^' ),
			'region' => $region,
			'name' => '',
			'protocol' => ( $is_https ? 'https' : 'http' ),
			'cname_http' => '',
			'cname_http_style' => ( $is_https ? 'display: none' : '' ),
			'cname_https_prefix' => '',
			'cname_https_style' => ( $is_https ? '' : 'display: none' ),
			'origin' => Util_Environment::home_url_host()
		);

		include  W3TC_DIR . '/Cdn_RackSpaceCdn_Popup_View_Service_Create.php';
		exit();
	}



	public function w3tc_ajax_cdn_rackspace_service_create_done() {
		$user_name = $_REQUEST['user_name'];
		$api_key = $_REQUEST['api_key'];
		$access_token = $_REQUEST['access_token'];
		$access_region_descriptor = json_decode(
			strtr( $_REQUEST['access_region_descriptor'], '!^', '"\\' ), true );
		$region = $_REQUEST['region'];

		$name = $_REQUEST['name'];
		$protocol = $_REQUEST['protocol'];
		$cname_http = $_REQUEST['cname_http'];
		$cname_https_prefix = $_REQUEST['cname_https_prefix'];

		$is_https = ( $protocol == 'https' );
		$cname = ( $is_https ? $cname_https_prefix : $cname_http );

		$api = new Cdn_RackSpace_Api_Cdn( array(
				'access_token' => $access_token,
				'access_region_descriptor' => $access_region_descriptor,
				'new_access_required' => ''
			) );

		$service_id = null;
		$access_url = null;

		try {
			$domain = array(
				'domain' => $cname,
				'protocol' => ( $is_https ? 'https' : 'http' )
			);
			if ( $is_https )
				$domain['certificate'] = 'shared';

			$service_id = $api->service_create( array(
					'name' => $name,
					'domains' => array( $domain ),
					'origins' => array(
						array(
							'origin' => Util_Environment::home_url_host(),
							'port' => ( $is_https ? 443 : 80 ),
							'ssl' => $is_https,
							'hostheadertype' => 'origin',
							'rules' => array()
						)
					),
					'caching' => array(
						array(
							'name' => 'default',
							'ttl' => 86400
						)
					)
				) );
		} catch ( \Exception $ex ) {
			$details = array(
				'user_name' => $user_name,
				'api_key' => $api_key,
				'access_token' => $access_token,
				'access_region_descriptor_serialized' =>
				strtr( json_encode( $access_region_descriptor ), '"\\', '!^' ),
				'region' => $region,
				'name' => $name,
				'protocol' => ( $is_https ? 'https' : 'http' ),
				'cname_http' => $cname_http,
				'cname_http_style' => ( $is_https ? 'display: none' : '' ),
				'cname_https_prefix' => $cname_https_prefix,
				'cname_https_style' => ( $is_https ? '' : 'display: none' ),
				'origin' => Util_Environment::home_url_host(),
				'error_message' => $ex->getMessage()
			);

			include  W3TC_DIR . '/Cdn_RackSpaceCdn_Popup_View_Service_Create.php';
			exit();
		}

		$details = array(
			'user_name' => $user_name,
			'api_key' => $api_key,
			'access_token' => $access_token,
			'access_region_descriptor_serialized' =>
			strtr( json_encode( $access_region_descriptor ), '"\\', '!^' ),
			'region' => $region,
			'name' => $name,
			'is_https' => $is_https,
			'cname' => $cname,
			'service_id' => $service_id
		);

		include  W3TC_DIR . '/Cdn_RackSpaceCdn_Popup_View_Service_Created.php';
	}



	// ajax returning json for js-script about service state
	public function w3tc_ajax_cdn_rackspace_service_get_state() {
		$access_token = $_REQUEST['access_token'];
		$access_region_descriptor = json_decode(
			strtr( $_REQUEST['access_region_descriptor'], '!^', '"\\' ), true );
		$service_id = $_REQUEST['service_id'];

		$api = new Cdn_RackSpace_Api_Cdn( array(
				'access_token' => $access_token,
				'access_region_descriptor' => $access_region_descriptor,
				'new_access_required' => ''
			) );

		$service = $api->service_get( $service_id );

		$response = array( 'status' => 'Unknown' );

		if ( isset( $service['status'] ) )
			$response['status'] = $service['status'];
		if ( isset( $service['links_by_rel']['access_url'] ) )
			$response['access_url'] = $service['links_by_rel']['access_url']['href'];
		if ( isset( $service['domains'] ) )
			$response['cname'] = $service['domains'][0]['domain'];

		// decode to friendly name
		if ( $response['status'] == 'create_in_progress' )
			$response['status'] = 'Creation in progress...';

		echo json_encode( $response );
	}



	public function w3tc_ajax_cdn_rackspace_service_created_done() {
		$this->_save_config();
	}



	private function _render_service_actualize( $details ) {
		$access_region_descriptor = json_decode(
			strtr( $details['access_region_descriptor_serialized'],
				'!^', '"\\' ), true );

		$api = new Cdn_RackSpace_Api_Cdn( array(
				'access_token' => $details['access_token'],
				'access_region_descriptor' => $access_region_descriptor,
				'new_access_required' => ''
			) );

		$service = null;
		try {
			$service = $api->service_get( $details['service_id'] );
		} catch ( \Exception $ex ) {
			$details['error_message'] = $ex->getMessage();
			include  W3TC_DIR . '/Cdn_RackSpaceCdn_Popup_View_Intro.php';
			exit();
		}

		$origin = '';
		$protocol = 'http';
		if ( isset( $service['origins'] ) && $service['origins'][0]['origin'] ) {
			$protocol = $service['origins'][0]['ssl'] ? 'https' : 'http';
			$origin = $service['origins'][0]['origin'];
		}

		$details['name'] = $service['name'];
		$details['protocol'] = $protocol;
		$details['origin'] = array(
			'current' => $origin,
			'new' => Util_Environment::home_url_host()
		);

		include  W3TC_DIR . '/Cdn_RackSpaceCdn_Popup_View_Service_Actualize.php';
		exit();
	}



	public function w3tc_ajax_cdn_rackspace_service_actualize_done() {
		$user_name = $_REQUEST['user_name'];
		$api_key = $_REQUEST['api_key'];
		$access_token = $_REQUEST['access_token'];
		$access_region_descriptor = json_decode(
			strtr( $_REQUEST['access_region_descriptor'], '!^', '"\\' ), true );
		$region = $_REQUEST['region'];
		$service_id = $_REQUEST['service_id'];

		$api = new Cdn_RackSpace_Api_Cdn( array(
				'access_token' => $access_token,
				'access_region_descriptor' => $access_region_descriptor,
				'new_access_required' => ''
			) );

		try {
			$service = $api->service_get( $service_id );

			$is_https = false;
			$origin = '';
			if ( isset( $service['origins'] ) && $service['origins'][0]['ssl'] ) {
				$is_https = $service['origins'][0]['ssl'];
				$origin = $service['origins'][0]['origin'];
			}

			$new_origin = Util_Environment::home_url_host();
			if ( $origin != $new_origin ) {
				$api->service_set( $service_id,
					array( array(
							'op' => 'replace',
							'path' => '/origins',
							'value' => array( array(
									'origin' => $new_origin,
									'port' => ( $is_https ? 443 : 80 ),
									'ssl' => $is_https,
									'hostheadertype' => 'origin',
									'rules' => array()
								) ) ) ) );
			}
		} catch ( \Exception $ex ) {
			$details = array(
				'user_name' => $user_name,
				'api_key' => $api_key,
				'error_message' => $ex->getMessage()
			);
			include  W3TC_DIR . '/Cdn_RackSpaceCdn_Popup_View_Intro.php';
			exit();
		}

		$this->_save_config();
	}



	private function _save_config() {
		$user_name = $_REQUEST['user_name'];
		$api_key = $_REQUEST['api_key'];
		$access_token = $_REQUEST['access_token'];
		$access_region_descriptor = json_decode(
			strtr( $_REQUEST['access_region_descriptor'], '!^', '"\\' ), true );
		$region = $_REQUEST['region'];
		$service_id = $_REQUEST['service_id'];

		$api = new Cdn_RackSpace_Api_Cdn( array(
				'access_token' => $access_token,
				'access_region_descriptor' => $access_region_descriptor,
				'new_access_required' => ''
			) );

		$service = $api->service_get( $service_id );

		$access_url = $service['links_by_rel']['access_url']['href'];
		$protocol = 'http';
		$domain = '';

		if ( isset( $service['domains'] ) && $service['domains'][0]['protocol'] ) {
			$protocol = $service['domains'][0]['protocol'];
			$domain = $service['domains'][0]['domain'];
		}

		$c = Dispatcher::config();

		$c->set( 'cdn.rackspace_cdn.user_name', $user_name );
		$c->set( 'cdn.rackspace_cdn.api_key', $api_key );
		$c->set( 'cdn.rackspace_cdn.region', $region );
		$c->set( 'cdn.rackspace_cdn.service.name', $service['name'] );
		$c->set( 'cdn.rackspace_cdn.service.id', $service_id );
		$c->set( 'cdn.rackspace_cdn.service.access_url', $access_url );
		$c->set( 'cdn.rackspace_cdn.service.protocol', $protocol );

		if ( $protocol != 'https' )
			$c->set( 'cdn.rackspace_cdn.domains', array( $domain ) );

		$c->save();

		// reset calculated state
		$state = Dispatcher::config_state();
		$state->set( 'cdn.rackspace_cdn.access_state', '' );
		$state->save();

		$postfix = Util_Admin::custom_message_id( array(),
			array(
				'cdn_configuration_saved' =>
				'CDN credentials are saved successfully' ) );
		echo 'Location admin.php?page=w3tc_cdn&' . $postfix;
		exit();
	}



	/**
	 * CNAMEs popup
	 */
	public function w3tc_ajax_cdn_rackspace_configure_domains() {
		$this->render_configure_domains_form();
		exit();
	}



	public function w3tc_ajax_cdn_rackspace_configure_domains_done() {
		$details = array(
			'cnames' => Util_Request::get_array( 'cdn_cnames' )
		);

		$core = Dispatcher::component( 'Cdn_Core' );
		$cdn = $core->get_cdn();

		try {
			// try to obtain CNAMEs
			$cdn->service_domains_set( $details['cnames'] );

			$c = Dispatcher::config();
			$c->set( 'cdn.rackspace_cdn.domains', $details['cnames'] );
			$c->save();

			$postfix = Util_Admin::custom_message_id( array(),
				array( 'cdn_cnames_saved' => 'CNAMEs are saved successfully' ) );
			echo 'Location admin.php?page=w3tc_cdn&' . $postfix;
			exit();
		} catch ( \Exception $ex ) {
			$details['error_message'] = $ex->getMessage();
		}

		$this->render_configure_domains_form( $details );
		exit();
	}



	private function render_configure_domains_form( $details = array() ) {
		if ( isset( $details['cnames'] ) )
			$cnames = $details['cnames'];
		else {
			$core = Dispatcher::component( 'Cdn_Core' );
			$cdn = $core->get_cdn();

			try {
				// try to obtain CNAMEs
				$cnames = $cdn->service_domains_get();
			} catch ( \Exception $ex ) {
				$details['error_message'] = $ex->getMessage();
				$cnames = array();
			}
		}

		include  W3TC_DIR . '/Cdn_RackSpaceCdn_Popup_View_ConfigureDomains.php';
	}



	private function render_service_value_change( $details, $field ) {
		Util_Ui::hidden( '', $field, $details[$field]['new'] );

		if ( !isset( $details[$field]['current'] ) ||
			$details[$field]['current'] == $details[$field]['new'] )
			echo htmlspecialchars( $details[$field]['new'] );
		else {
			echo 'currently set to <strong>' .
				htmlspecialchars( empty( $details[$field]['current'] ) ?
				'<empty>' : $details[$field]['current'] ) .
				'</strong><br />';
			echo 'will be changed to <strong>' .
				htmlspecialchars( $details[$field]['new'] ) . '</strong><br />';
		}
	}
}