<?php
namespace W3TC;

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

		add_action( 'w3tc_ajax_cdn_maxcdn_fsd_intro', array( $o, 'w3tc_ajax_cdn_maxcdn_fsd_intro' ) );
		add_action( 'w3tc_ajax_cdn_maxcdn_fsd_list_zones', array( $o, 'w3tc_ajax_cdn_maxcdn_fsd_list_zones' ) );
		add_action( 'w3tc_ajax_cdn_maxcdn_fsd_view_zone', array( $o, 'w3tc_ajax_cdn_maxcdn_fsd_view_zone' ) );
		add_action( 'w3tc_ajax_cdn_maxcdn_fsd_configure_zone', array( $o, 'w3tc_ajax_cdn_maxcdn_fsd_configure_zone' ) );
		add_action( 'w3tc_ajax_cdn_maxcdn_fsd_configure_zone_skip', array( $o, 'w3tc_ajax_cdn_maxcdn_fsd_configure_zone_skip' ) );
	}

	public function __construct() {
		if ( ! class_exists( 'NetDNA' ) ) {
			require_once W3TC_LIB_NETDNA_DIR . '/NetDNA.php';
		}
	}

	public function w3tc_ajax_cdn_maxcdn_fsd_intro() {
		$config = Dispatcher::config();

		$this->render_intro(
			array(
				'api_key' => $config->get_string( 'cdnfsd.maxcdn.api_key' ),
			)
		);
	}

	private function render_intro( $details ) {
		$config         = Dispatcher::config();
		$url_obtain_key = Util_Ui::url(
			array(
				'page'                      => 'w3tc_dashboard',
				'w3tc_cdn_maxcdn_authorize' => 'y',
			)
		);

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

	public function w3tc_ajax_cdn_maxcdn_fsd_list_zones() {
		$api_key = Util_Request::get_string( 'api_key' );
		$api     = \NetDNA::create( $api_key );

		if ( ! $api->is_valid() ) {
			$this->render_intro(
				array(
					'api_key'       => $api_key,
					'error_message' => 'Can\'t authenticate: API key not valid',
				) );

			exit();
		}

		try {
			$zones = $api->get_pull_zones();
		} catch ( \Exception $ex ) {
			$error_message = 'Can\'t authenticate: ' . $ex->getMessage();

			if ( strpos( $error_message, 'not whitelisted' ) > 0 ) {
				$error_message .= '. You can whitelist IP <a target="_blank" href="https://cp.maxcdn.com/account/api/whitelist">here</a>';
			}

			$this->render_intro(
				array(
					'api_key'       => $api_key,
					'error_message' => $error_message,
				)
			);
			exit();
		}

		$details = array(
			'api_key' => $api_key,
			'zones'   => $zones,
		);

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

	public function w3tc_ajax_cdn_maxcdn_fsd_view_zone() {
		$api_key = Util_Request::get_string( 'api_key' );
		$zone_id = Util_Request::get( 'zone_id', '' );

		$details = array(
			'api_key'              => $api_key,
			'zone_id'              => $zone_id,
			'name'                 => '',
			'url'                  => array( 'new' => get_home_url() ),
			'ip'                   => array(),
			// needs to be off since original DNS will be replaced with maxcdn's.
			'dns_check'            => array( 'new' => 0 ),
			// needs to be off, since WP issues no-cache headers for wp-admin and logged-in users.
			'ignore_cache_control' => array( 'new' => 0 ),
			'custom_domain'        => array( 'new' => Util_Environment::home_url_host() ),
		);

		if ( empty( $zone_id ) ) {
			// create new zone mode.
			$details['name']      = Util_Request::get( 'zone_new_name' );
			$details['ip']['new'] = Cdnfsd_Util::get_suggested_home_ip();
		} else {
			$api = \NetDNA::create( $api_key );
			try {
				$zone           = $api->get_zone( $zone_id );
				$custom_domains = $api->get_custom_domains( $zone_id );
			} catch ( \Exception $ex ) {
				$this->render_intro(
					array(
						'api_key'       => $api_key,
						'error_message' => 'Can\'t obtain zone: ' . $ex->getMessage(),
					)
				);
				exit();
			}

			$details['custom_domain']['current'] = '';

			foreach ( $custom_domains as $d ) {
				$details['custom_domain']['current'] = $d;
				if ( Util_Environment::home_url_host() === $d ) {
					break;
				}
			}

			$details['name']                 = $zone['name'];
			$details['dns_check']['current'] = $zone['dns_check'];
			$details['ignore_cache_control'] = $zone['ignore_cache_control'];
			$details['url']['current']       = $zone['url'];
			$details['ip']['current']        = $zone['ip'];

			$origin_ip = Cdnfsd_Util::get_suggested_home_ip();
			$cdn_ip    = gethostbyname( $zone['tmp_url'] );

			if ( $origin_ip !== $cdn_ip ) {
				$details['ip']['new'] = $origin_ip;
			}
		}

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

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

		if ( ! isset( $details[ $field ]['current'] ) || $details[ $field ]['current'] === $details[ $field ]['new'] ) {
			echo esc_html( $details[ $field ]['new'] );
		} else {
			echo wp_kses(
				sprintf(
					// translators: 1 HTML strong tag containing current zone value followed by line break tag,
					// translators: 2 HTML strong tag containing new zone value followed by line break tag.
					__(
						'currently set to %1$s will be changed to %2$s',
						'w3-total-cache'
					),
					'<strong>' . empty( $details[ $field ]['current'] ) ? '<empty>' : $details[ $field ]['current'] . '</strong><br />',
					'<strong>' . $details[ $field ]['new'] . '</strong><br />'
				),
				array(
					'strong' => array(),
					'br'     => array(),
				)
			);
		}
	}

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

		if ( ! isset( $details[ $field ]['current'] ) ) {
			echo wp_kses(
				sprintf(
					// translators: 1 HTML strong tag containing new zone boolean value.
					__(
						'will be set to %1$s',
						'w3-total-cache'
					),
					'<strong>' . $this->render_zone_boolean( $details[ $field ]['new'] ) . '</strong>'
				),
				array(
					'strong' => array(),
				)
			);
		} elseif ( $details[ $field ]['current'] === $details[ $field ]['new'] ) {
			echo '<strong>' . esc_html( $this->render_zone_boolean( $details[ $field ]['new'] ) ) . '</strong>';
		} else {
			echo wp_kses(
				sprintf(
					// translators: 1 HTML strong tag containing current zone boolean value followed by line break tag,
					// translators: 2 HTML strong tag containing new zone boolean value followed by line break tag.
					__(
						'currently set to %1$s will be changed to %2$s',
						'w3-total-cache'
					),
					'<strong>' . $this->render_zone_boolean( $details[ $field ]['current'] ) . '</strong><br />',
					'<strong>' . $this->render_zone_boolean( $details[ $field ]['new'] ) . '</strong><br />'
				),
				array(
					'strong' => array(),
					'br'     => array(),
				)
			);
		}
	}

	private function render_zone_boolean( $v ) {
		if ( 0 === $v ) {
			echo 'disabled';
		} else {
			echo 'enabled';
		}
	}

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

		if ( isset( $details[ $field ]['current'] ) && $details[ $field ]['current'] !== $details[ $field ]['new'] ) {
			echo wp_kses(
				sprintf(
					// translators: 1 opening HTML p tag, 2 HTML strong tag containing current zone IP,
					// translators: 3 closing HTML p tag.
					__(
						'%1$scurrently set to %2$s%3$s',
						'w3-total-cache'
					),
					'<p class="description">',
					'<strong>' . $details[ $field ]['current'] . '</strong>',
					'</p>'
				),
				array(
					'p'      => array(
						'class' => array(),
					),
					'strong' => array(),
				)
			);
		}
	}

	public function w3tc_ajax_cdn_maxcdn_fsd_configure_zone() {
		$api_key = Util_Request::get_string( 'api_key' );
		$zone_id = Util_Request::get( 'zone_id', '' );
		$zone    = array(
			'name'             => Util_Request::get( 'name' ),
			'label'            => Util_Request::get( 'name' ),
			'url'              => Util_Request::get( 'url' ),
			'use_stale'        => 1,
			'queries'          => 1,
			'compress'         => 1,
			'backend_compress' => 1,
			'dns_check'        => Util_Request::get( 'dns_check' ),
			'ip'               => Util_Request::get( 'ip' ),
		);
		$api     = \NetDNA::create( $api_key );

		try {
			if ( empty( $zone_id ) ) {
				$response = $api->create_pull_zone( $zone );
				$zone_id  = $response['id'];
			} else {
				$response = $api->update_pull_zone( $zone_id, $zone );
			}

			$custom_domains = $api->get_custom_domains( $zone_id );
			$custom_domain  = Util_Request::get( 'custom_domain' );

			$added = false;
			foreach ( $custom_domains as $d ) {
				if ( $d === $custom_domain ) {
					$added = true;
					break;
				}
			}
			if ( ! $added ) {
				$api->create_custom_domain( $zone_id, $custom_domain );
			}
		} catch ( \Exception $ex ) {
			$this->render_intro(
				array(
					'api_key'       => $api_key,
					'error_message' => 'Failed to configure custom domain ' . $custom_domain . ': ' . $ex->getMessage(),
				)
			);
			exit();
		}

		$zone_domain = $response['tmp_url'];

		$c = Dispatcher::config();
		$c->set( 'cdnfsd.maxcdn.api_key', $api_key );
		$c->set( 'cdnfsd.maxcdn.zone_id', $zone_id );
		$c->set( 'cdnfsd.maxcdn.zone_domain', $zone_domain );
		$c->save();

		$details = array(
			'name'             => $zone['name'],
			'home_domain'      => Util_Environment::home_url_host(),
			'dns_cname_target' => $zone_domain,
		);

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

	public function w3tc_ajax_cdn_maxcdn_fsd_configure_zone_skip() {
		$api_key = Util_Request::get_string( 'api_key' );
		$zone_id = Util_Request::get( 'zone_id', '' );

		$api = \NetDNA::create( $api_key );

		try {
			$zone = $api->get_zone( $zone_id );
		} catch ( \Exception $ex ) {
			$this->render_intro(
				array(
					'api_key'       => $api_key,
					'error_message' => 'Failed to obtain custom domains: ' . $ex->getMessage(),
				)
			);
			exit();
		}

		$zone_domain = $zone['cdn_url'];

		$c = Dispatcher::config();
		$c->set( 'cdnfsd.maxcdn.api_key', $api_key );
		$c->set( 'cdnfsd.maxcdn.zone_id', $zone_id );
		$c->set( 'cdnfsd.maxcdn.zone_domain', $zone_domain );
		$c->save();

		$details = array(
			'name'             => $zone['name'],
			'home_domain'      => Util_Environment::home_url_host(),
			'dns_cname_target' => $zone_domain,
		);

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