<?php

if (!defined('UPDRAFTPLUS_DIR')) die('No direct access allowed.');

// SDK uses namespacing - requires PHP 5.3 (actually the SDK states its requirements as 5.3.3)
use OpenCloud\Rackspace;

// New SDK - https://github.com/rackspace/php-opencloud and http://docs.rackspace.com/sdks/guide/content/php.html
// Uploading: https://github.com/rackspace/php-opencloud/blob/master/docs/userguide/ObjectStore/Storage/Object.md

require_once(UPDRAFTPLUS_DIR.'/methods/openstack-base.php');

class UpdraftPlus_BackupModule_cloudfiles_opencloudsdk extends UpdraftPlus_BackupModule_openstack_base {

	public function __construct() {
		parent::__construct('cloudfiles', 'Cloud Files', 'Rackspace Cloud Files', '/images/rackspacecloud-logo.png');
	}

	public function get_client() {
		return $this->client;
	}

	public function get_openstack_service($opts, $useservercerts = false, $disablesslverify = null) {

		$user = $opts['user'];
		$apikey = $opts['apikey'];
		$authurl = $opts['authurl'];
		$region = (!empty($opts['region'])) ? $opts['region'] : null;

		include_once(UPDRAFTPLUS_DIR.'/vendor/autoload.php');

		global $updraftplus;

		// The new authentication APIs don't match the values we were storing before
		$new_authurl = ('https://lon.auth.api.rackspacecloud.com' == $authurl || 'uk' == $authurl) ? Rackspace::UK_IDENTITY_ENDPOINT : Rackspace::US_IDENTITY_ENDPOINT;

		if (null === $disablesslverify) $disablesslverify = UpdraftPlus_Options::get_updraft_option('updraft_ssl_disableverify');

		if (empty($user) || empty($apikey)) throw new Exception(__('Authorisation failed (check your credentials)', 'updraftplus'));

		$this->log("authentication URL: ".$new_authurl);

		$client = new Rackspace($new_authurl, array(
			'username' => $user,
			'apiKey' => $apikey
		));
		$this->client = $client;

		if ($disablesslverify) {
			$client->setSslVerification(false);
		} else {
			if ($useservercerts) {
				$client->setConfig(array($client::SSL_CERT_AUTHORITY, 'system'));
			} else {
				$client->setSslVerification(UPDRAFTPLUS_DIR.'/includes/cacert.pem', true, 2);
			}
		}

		return $client->objectStoreService('cloudFiles', $region);
	}

	/**
	 * This method overrides the parent method and lists the supported features of this remote storage option.
	 *
	 * @return Array - an array of supported features (any features not
	 * mentioned are assumed to not be supported)
	 */
	public function get_supported_features() {
		// This options format is handled via only accessing options via $this->get_options()
		return array('multi_options', 'config_templates', 'multi_storage');
	}

	/**
	 * Retrieve default options for this remote storage module.
	 *
	 * @return Array - an array of options
	 */
	public function get_default_options() {
		return array(
			'user' => '',
			'authurl' => 'https://auth.api.rackspacecloud.com',
			'apikey' => '',
			'path' => '',
			'region' => null
		);
	}

	/**
	 * Get the pre configuration template
	 *
	 * @return String - the template
	 */
	public function get_pre_configuration_middlesection_template() {

		global $updraftplus_admin;

		$classes = $this->get_css_classes();

		if (!function_exists('json_last_error')) {
			$updraftplus_admin->show_double_warning('<strong>'.__('Warning', 'updraftplus').':</strong> '.sprintf(__('Your web server\'s PHP installation does not included a required module (%s). Please contact your web hosting provider\'s support.', 'updraftplus'), 'json').' '.sprintf(__("UpdraftPlus's %s module <strong>requires</strong> %s. Please do not file any support requests; there is no alternative.", 'updraftplus'), 'Cloud Files', 'json'), 'cloudfiles', false);
		}
		echo '<p>' . __('Get your API key <a href="https://mycloud.rackspace.com/" target="_blank">from your Rackspace Cloud console</a> (read instructions <a href="http://www.rackspace.com/knowledge_center/article/rackspace-cloud-essentials-1-generating-your-api-key" target="_blank">here</a>), then pick a container name to use for storage. This container will be created for you if it does not already exist.', 'updraftplus').' <a href="'.apply_filters("updraftplus_com_link", "https://updraftplus.com/faqs/there-appear-to-be-lots-of-extra-files-in-my-rackspace-cloud-files-container/").'" target="_blank">'.__('Also, you should read this important FAQ.', 'updraftplus').'</a></p>';
	}
	
	/**
	 * This gives the partial template string to the settings page for the CloudFiles  settings.
	 *
	 * @return String - the partial template, ready for substitutions to be carried out
	 */
	public function get_configuration_middlesection_template() {
		global $updraftplus_admin;
		$classes = $this->get_css_classes();
		$template_str = '
		<tr class="'.$classes.'">
			<th title="'.__('Accounts created at rackspacecloud.com are US accounts; accounts created at rackspace.co.uk are UK accounts.', 'updraftplus').'">'.__('US or UK-based Rackspace Account', 'updraftplus').':</th>
			<td>
				<select data-updraft_settings_test="authurl" '.$this->output_settings_field_name_and_id('authurl', true).' title="'.__('Accounts created at rackspacecloud.com are US-accounts; accounts created at rackspace.co.uk are UK-based', 'updraftplus').'">
					<option {{#ifeq "https://auth.api.rackspacecloud.com" authurl}}selected="selected"{{/ifeq}} value="https://auth.api.rackspacecloud.com">'.__('US (default)', 'updraftplus').'</option>
					<option {{#ifeq "https://lon.auth.api.rackspacecloud.com" authurl}}selected="selected"{{/ifeq}} value="https://lon.auth.api.rackspacecloud.com">'.__('UK', 'updraftplus').'</option>
				</select>
			</td>
		</tr>
		<tr class="'.$classes.'">
			<th>'.__('Cloud Files Storage Region', 'updraftplus').':</th>
			<td>
				<select data-updraft_settings_test="region" '.$this->output_settings_field_name_and_id('region', true).'>						
					{{#each regions as |desc reg|}}
						<option {{#ifeq ../region reg}}selected="selected"{{/ifeq}} value="{{reg}}">{{desc}}</option>
					{{/each}}
				</select>
			</td>
		</tr>
		<tr class="'.$classes.'">
			<th>'.__('Cloud Files Username', 'updraftplus').':</th>
			<td><input data-updraft_settings_test="user" type="text" autocomplete="off" class="updraft_input--wide" '.$this->output_settings_field_name_and_id('user', true).' value="{{user}}" />
			<div style="clear:both;">
				'.apply_filters('updraft_cloudfiles_apikeysetting', '<a href="'.apply_filters("updraftplus_com_link", "https://updraftplus.com/shop/cloudfiles-enhanced/").'" target="_blank"><em>'.__('To create a new Rackspace API sub-user and API key that has access only to this Rackspace container, use this add-on.', 'updraftplus').'</em></a>').'
			</div>
			</td>
		</tr>
		<tr class="'.$classes.'">
			<th>'.__('Cloud Files API Key', 'updraftplus').':</th>
			<td><input data-updraft_settings_test="apikey" type="'.apply_filters('updraftplus_admin_secret_field_type', 'password').'" autocomplete="off" class="updraft_input--wide" '.$this->output_settings_field_name_and_id('apikey', true).' value="{{apikey}}" />
			</td>
		</tr>
		<tr class="'.$classes.'">
			<th>'.apply_filters('updraftplus_cloudfiles_location_description', __('Cloud Files Container', 'updraftplus')).':</th>
			<td><input data-updraft_settings_test="path" type="text" class="updraft_input--wide" '.$this->output_settings_field_name_and_id('path', true).' value="{{path}}" /></td>
		</tr>';
		return $template_str;
	}
	
	/**
	 * Modifies handerbar template options
	 *
	 * @param array $opts handerbar template options
	 * @return array - Modified handerbar template options
	 */
	public function transform_options_for_template($opts) {
		$opts['regions'] = array(
			'DFW' => __('Dallas (DFW) (default)', 'updraftplus'),
			'SYD' => __('Sydney (SYD)', 'updraftplus'),
			'ORD' => __('Chicago (ORD)', 'updraftplus'),
			'IAD' => __('Northern Virginia (IAD)', 'updraftplus'),
			'HKG' => __('Hong Kong (HKG)', 'updraftplus'),
			'LON' => __('London (LON)', 'updraftplus')
		);
		$opts['region'] = (empty($opts['region'])) ? 'DFW' : $opts['region'];
		if (isset($opts['apikey'])) {
			$opts['apikey'] = trim($opts['apikey']);
		}
		$opts['authurl'] = !empty($opts['authurl']) ? $opts['authurl'] : '';
		return $opts;
	}

	/**
	 * Perform a test of user-supplied credentials, and echo the result
	 *
	 * @param Array $posted_settings - settings to test
	 */
	public function credentials_test($posted_settings) {

		if (empty($posted_settings['apikey'])) {
			printf(__("Failure: No %s was given.", 'updraftplus'), __('API key', 'updraftplus'));
			return;
		}

		if (empty($posted_settings['user'])) {
			printf(__("Failure: No %s was given.", 'updraftplus'), __('Username', 'updraftplus'));
			return;
		}

		$opts = array(
			'user' => $posted_settings['user'],
			'apikey' => $posted_settings['apikey'],
			'authurl' => $posted_settings['authurl'],
			'region' => (empty($posted_settings['region'])) ? null : $posted_settings['region']
		);

		$this->credentials_test_go($opts, $posted_settings['path'], $posted_settings['useservercerts'], $posted_settings['disableverify']);
	}

	/**
	 * Check whether options have been set up by the user, or not
	 *
	 * @param Array $opts - the potential options
	 *
	 * @return Boolean
	 */
	public function options_exist($opts) {
		if (is_array($opts) && isset($opts['user']) && '' != $opts['user'] && !empty($opts['apikey'])) return true;
		return false;
	}
}
