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class-gf-trello.php
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<?php
// don't load directly
if ( ! defined( 'ABSPATH' ) ) {
die();
}
GFForms::include_feed_addon_framework();
/**
* Gravity Forms Trello Add-On.
*
* @since 1.0
* @package GravityForms
* @author Rocketgenius
* @copyright Copyright (c) 2017, Rocketgenius
*/
class GFTrello extends GFFeedAddOn {
/**
* Contains an instance of this class, if available.
*
* @since 1.0
* @access private
* @var object $_instance If available, contains an instance of this class.
*/
private static $_instance = null;
/**
* Defines the version of the Trello Add-On.
*
* @since 1.0
* @access protected
* @var string $_version Contains the version, defined from trello.php
*/
protected $_version = GF_TRELLO_VERSION;
/**
* Defines the minimum Gravity Forms version required.
*
* @since 1.0
* @access protected
* @var string $_min_gravityforms_version The minimum version required.
*/
protected $_min_gravityforms_version = '2.2.3';
/**
* Defines the plugin slug.
*
* @since 1.0
* @access protected
* @var string $_slug The slug used for this plugin.
*/
protected $_slug = 'gravityformstrello';
/**
* Defines the main plugin file.
*
* @since 1.0
* @access protected
* @var string $_path The path to the main plugin file, relative to the plugins folder.
*/
protected $_path = 'gravityformstrello/trello.php';
/**
* Defines the full path to this class file.
*
* @since 1.0
* @access protected
* @var string $_full_path The full path.
*/
protected $_full_path = __FILE__;
/**
* Defines the URL where this Add-On can be found.
*
* @since 1.0
* @access protected
* @var string The URL of the Add-On.
*/
protected $_url = 'http://www.gravityforms.com';
/**
* Defines the title of this Add-On.
*
* @since 1.0
* @access protected
* @var string $_title The title of the Add-On.
*/
protected $_title = 'Gravity Forms Trello Add-On';
/**
* Defines the short title of the Add-On.
*
* @since 1.0
* @access protected
* @var string $_short_title The short title.
*/
protected $_short_title = 'Trello';
/**
* Defines if Add-On should use Gravity Forms servers for update data.
*
* @since 1.0
* @access protected
* @var bool
*/
protected $_enable_rg_autoupgrade = true;
/**
* Defines the capability needed to access the Add-On settings page.
*
* @since 1.0
* @access protected
* @var string $_capabilities_settings_page The capability needed to access the Add-On settings page.
*/
protected $_capabilities_settings_page = 'gravityforms_trello';
/**
* Defines the capability needed to access the Add-On form settings page.
*
* @since 1.0
* @access protected
* @var string $_capabilities_form_settings The capability needed to access the Add-On form settings page.
*/
protected $_capabilities_form_settings = 'gravityforms_trello';
/**
* Defines the capability needed to uninstall the Add-On.
*
* @since 1.0
* @access protected
* @var string $_capabilities_uninstall The capability needed to uninstall the Add-On.
*/
protected $_capabilities_uninstall = 'gravityforms_trello_uninstall';
/**
* Defines the capabilities needed for the Trello Add-On
*
* @since 1.0
* @access protected
* @var array $_capabilities The capabilities needed for the Add-On.
*/
protected $_capabilities = array( 'gravityforms_trello', 'gravityforms_trello_uninstall' );
/**
* Contains an instance of the Trello API library, if available.
*
* @since 1.0
* @access protected
* @var object $api If available, contains an instance of the Trello API library.
*/
protected $api = null;
/**
* Trello app key.
*
* @since 1.0
* @access protected
* @var object $trello_app_key Trello app key.
*/
protected $trello_app_key;
/**
* Enabling background feed processing to prevent performance issues delaying form submission completion.
*
* @since 2.1
*
* @var bool
*/
protected $_async_feed_processing = true;
/**
* Version of this add-on which requires re authentication with the API.
*
* Anytime updates are made to this class that requires a site to reauthenticate Gravity Forms with Trello, this
* constant should be updated to the value of GFForms::$version.
*
* @since 2.0
*
* @see GFForms::$version
*/
const LAST_REAUTHENTICATION_VERSION = '2.0';
/**
* Get instance of this class.
*
* @since 1.0
* @access public
* @static
*
* @return GFTrello
*/
public static function get_instance() {
if ( self::$_instance == null ) {
self::$_instance = new self;
}
return self::$_instance;
}
/**
* Plugin starting point. Adds PayPal delayed payment support.
*
* @since 1.0.2
* @access public
*/
public function init() {
parent::init();
add_filter( 'gform_settings_header_buttons', array( $this, 'filter_gform_settings_header_buttons' ), 99 );
$this->add_delayed_payment_support(
array(
'option_label' => esc_html__( 'Create Trello card only when payment is received.', 'gravityformstrello' )
)
);
}
/**
* Initialize admin hooks.
*
* @since 2.0
*
* @return void
*/
public function init_admin() {
parent::init_admin();
add_action( 'admin_init', array( $this, 'maybe_update_auth_tokens' ) );
add_action( 'admin_notices', array( $this, 'maybe_display_authentication_notice' ) );
}
/**
* Add AJAX callbacks.
*
* @since 2.0
*/
public function init_ajax() {
parent::init_ajax();
add_action( 'wp_ajax_gf_trello_deauthorize', array( $this, 'ajax_deauthorize' ) );
}
/**
* Revoke token and remove it from settings.
*
* @since 2.0
*/
public function ajax_deauthorize() {
check_ajax_referer( 'gf_trello_deauth', 'nonce' );
// If user is not authorized, exit.
if ( ! GFCommon::current_user_can_any( $this->_capabilities_settings_page ) ) {
wp_send_json_error( array( 'message' => esc_html__( 'Access denied.', 'gravityformstrello' ) ) );
}
add_filter( 'https_ssl_verify', '__return_false' );
$settings = $this->get_plugin_settings();
$token = rgar( $settings, 'authToken' );
if ( rgblank( $token ) ) {
wp_send_json_success();
}
$response = wp_remote_request(
'https://api.trello.com/1/tokens/' . $token . '/?key=' . $this->get_trello_app_key() . '&token=' . $token,
array(
'method' => 'DELETE',
'headers' => array(
'Accept' => 'application/json',
),
)
);
if ( is_wp_error( $response ) ) {
wp_send_json_error( $response->get_error_message() );
}
$response_body = json_decode( wp_remote_retrieve_body( $response ), 'ARRAY_A' );
if ( is_array( $response_body ) && array_key_exists( '_value', $response_body ) && $response_body['_value'] == null ) {
wp_send_json_success();
} else {
wp_send_json_error( array( 'message' => esc_html__( 'Unable to revoke token at Trello.', 'gravityformstrello' ) ) );
}
wp_send_json_success();
}
/**
* Update auth tokens if required.
*
* @since 2.0
*/
public function maybe_update_auth_tokens() {
if ( rgget( 'subview' ) !== $this->get_slug() ) {
return;
}
$payload = $this->get_oauth_payload();
if ( ! $payload ) {
return;
}
$this->log_debug( __METHOD__ . '(): Payload received.' . var_export( $payload, true ) );
$auth_payload = $this->get_decoded_auth_payload( $payload );
// If state does not match, do not save.
if ( rgpost( 'state' ) && ! wp_verify_nonce( rgar( $payload, 'state' ), 'gf_trello_auth' ) ) {
GFCommon::add_error_message( esc_html__( 'Unable to connect to Trello due to mismatched state.', 'gravityformstrello' ) );
return;
}
$token = rgar( $auth_payload, 'access_token' );
if ( false === $this->save_access_token( $token ) || rgpost( 'auth_error' ) ) {
GFCommon::add_error_message( esc_html__( 'Unable to connect your Trello account.', 'gravityformstrello' ) );
}
}
/**
* Decodes the auth_payload returned form Gravity API.
*
* @since 2.0
*
* @param array $payload
*
* @return array
*/
private function get_decoded_auth_payload( $payload ) {
$auth_payload_string = rgar( $payload, 'auth_payload' );
return empty( $auth_payload_string ) ? array() : json_decode( $auth_payload_string, true );
}
/**
* Saves the access token to the plugin settings.
*
* @since 2.0
*
* @param string $token The Access Token.
*
* @return bool
*/
private function save_access_token( $token ) {
if ( empty( $token ) || $this->is_save_postback() ) {
return false;
}
$settings = $this->get_plugin_settings();
// Here $settings could be set to false, if so then will be converted to an array.
if ( ! is_array( $settings ) ) {
$settings = array();
}
$settings['authToken'] = $token;
$settings['reauth_version'] = self::LAST_REAUTHENTICATION_VERSION; // Set the API authentication version.
$this->update_plugin_settings( $settings );
return true;
}
/**
* Get the authorization payload data.
*
* Returns the auth POST request if it's present, otherwise attempts to return a recent transient cache.
*
* @since 2.0
*
* @return array
*/
private function get_oauth_payload() {
$payload = array_filter(
array(
'auth_payload' => rgpost( 'auth_payload' ),
'auth_error' => rgpost( 'auth_error' ),
'state' => rgpost( 'state' ),
)
);
if ( count( $payload ) === 2 || isset( $payload['auth_error'] ) ) {
return $payload;
}
$payload = get_transient( "gravityapi_response_{$this->_slug}" );
if ( rgar( $payload, 'state' ) !== get_transient( "gravityapi_request_{$this->_slug}" ) ) {
return array();
}
delete_transient( "gravityapi_response_{$this->_slug}" );
return is_array( $payload ) ? $payload : array();
}
/**
* Enqueue admin scripts.
*
* @since 1.0
* @access public
*
* @return array
*/
public function scripts() {
$min = defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG || isset( $_GET['gform_debug'] ) ? '' : '.min';
$scripts = array(
array(
'handle' => 'trello_client',
'deps' => array( 'jquery' ),
'src' => '//api.trello.com/1/client.js?key=' . $this->get_trello_app_key(),
),
array(
'handle' => 'gform_trello_admin',
'deps' => array( 'jquery', 'trello_client' ),
'src' => $this->get_base_url() . "/js/admin{$min}.js",
'version' => $this->_version,
'enqueue' => array(
array(
'admin_page' => array( 'plugin_settings' )
),
),
'strings' => array(
'deauth_nonce' => wp_create_nonce( 'gf_trello_deauth' ),
'ajaxurl' => admin_url( 'admin-ajax.php' ),
'requires_reauth' => $this->requires_api_reauthentication(),
),
),
);
return array_merge( parent::scripts(), $scripts );
}
/**
* Return the plugin's icon for the plugin/form settings menu.
*
* @since 1.3
*
* @return string
*/
public function get_menu_icon() {
return $this->is_gravityforms_supported( '2.5-beta-4' ) ? 'gform-icon--trello' : 'dashicons-admin-generic';
}
// # PLUGIN SETTINGS -----------------------------------------------------------------------------------------------
/**
* Setup plugin settings fields.
*
* @since 1.0
* @since 2.0 Added reauth_version field.
*
* @return array
*/
public function plugin_settings_fields() {
return array(
array(
'fields' => array(
array(
'name' => 'reauth_version',
'type' => 'hidden',
),
array(
'name' => 'authToken',
'type' => 'hidden',
),
array(
'name' => '',
'label' => esc_html__( 'Authorize with Trello', 'gravityformstrello' ),
'type' => 'auth_token_button',
),
)
),
);
}
/**
* Hide submit button on plugin settings page.
*
* @since 1.3
*
* @param string $html
*
* @return string
*/
public function filter_gform_settings_header_buttons( $html = '' ) {
// If this is not the plugin settings page, return.
if ( ! $this->is_plugin_settings( $this->get_slug() ) ) {
return $html;
}
// Hide button.
$html = str_replace( '<button', '<button style="opacity:0;"', $html );
return $html;
}
/**
* Create Generate Auth Token settings field.
*
* @since 1.0
* @access public
*
* @param array $field Field settings.
* @param bool $echo Display field. Defaults to true.
*
* @uses GFAddOn::get_plugin_setting()
*
* @return string
*/
public function settings_auth_token_button( $field, $echo = true ) {
// If auth token does not exist, add generate button.
if ( ! $this->initialize_api() ) {
$html = sprintf(
'<a href="%1$s" class="button" id="gform_trello_auth_button">%2$s</a>',
$this->get_auth_url(),
esc_html__( 'Click here to authenticate your Trello account.', 'gravityformstrello' )
);
} else {
$html = esc_html__( 'Trello has been authenticated with your account.', 'gravityformstrello' );
$html .= " <i class=\"fa icon-check fa-check gf_valid\"></i><br /><br />";
$html .= sprintf(
' <a href="#" class="button" id="gform_trello_deauth_button">%1$s</a>',
esc_html__( 'De-Authorize Trello', 'gravityformstrello' )
);
}
if ( $echo ) {
echo $html;
}
return $html;
}
/**
* Get Gravity API URL.
*
* @since 2.0
*
* @param string $path Path.
*
* @return string
*/
private function get_gravity_api_url( $path = '' ) {
return ( defined( 'GRAVITY_API_URL' ) ? GRAVITY_API_URL : 'https://gravityapi.com/wp-json/gravityapi/v1' ) . $path;
}
/**
* Generates the URL of the first step of the OAuth flow.
*
* @since 2.0
*
* @return string
*/
private function get_auth_url() {
$nonce = wp_create_nonce( 'gf_trello_auth' );
if ( get_transient( 'gravityapi_request_' . $this->get_slug() ) ) {
delete_transient( 'gravityapi_request_' . $this->get_slug() );
}
set_transient( 'gravityapi_request_' . $this->get_slug(), $nonce, 10 * MINUTE_IN_SECONDS );
return add_query_arg(
array(
'redirect_to' => urlencode( admin_url( 'admin.php?page=gf_settings&subview=' . $this->_slug ) ),
'state' => $nonce,
'license' => GFCommon::get_key(),
),
$this->get_gravity_api_url( '/auth/trello' )
);
}
// # FEED SETTINGS -------------------------------------------------------------------------------------------------
/**
* Setup fields for feed settings.
*
* @since 1.0
* @access public
*
* @uses GFAddOn::add_field_after()
* @uses GFFeedAddOn::get_default_feed_name()
* @uses GFTrello::get_boards_for_feed_setting()
* @uses GFTrello::get_date_fields_for_feed_setting()
* @uses GFTrello::get_labels_for_feed_setting()
* @uses GFTrello::get_lists_for_feed_setting()
* @uses GFTrello::get_members_for_feed_setting()
* @uses GFTrello::get_upload_fields_for_feed_setting()
*
* @return array
*/
public function feed_settings_fields() {
// Build feed settings sections.
$sections = array(
array(
'fields' => array(
array(
'name' => 'feedName',
'label' => esc_html__( 'Feed Name', 'gravityformstrello' ),
'type' => 'text',
'required' => true,
'class' => 'medium',
'default_value' => $this->get_default_feed_name(),
'tooltip' => sprintf(
'<h6>%s</h6>%s',
esc_html__( 'Name', 'gravityformstrello' ),
esc_html__( 'Enter a feed name to uniquely identify this setup.', 'gravityformstrello' )
),
),
array(
'name' => 'board',
'label' => esc_html__( 'Trello Board', 'gravityformstrello' ),
'type' => 'select',
'required' => true,
'choices' => $this->get_boards_for_feed_setting(),
'onchange' => "jQuery( 'select[name=\"_gaddon_setting_list\"]' ).val( '' ); jQuery( this ).parents( 'form' ).submit();",
'no_choices' => esc_html__( 'You must have at least one Trello board in your account.', 'gravityformstrello' ),
),
array(
'name' => 'list',
'label' => esc_html__( 'Trello List', 'gravityformstrello' ),
'type' => 'select',
'required' => true,
'choices' => $this->get_lists_for_feed_setting(),
'dependency' => 'board',
'onchange' => "jQuery( this ).parents( 'form' ).submit();",
'no_choices' => esc_html__( 'You must select a Trello board containing lists.', 'gravityformstrello' ),
),
),
),
array(
'title' => esc_html__( 'Card Settings', 'gravityformstrello' ),
'dependency' => 'list',
'fields' => array(
array(
'name' => 'cardName',
'type' => 'text',
'required' => true,
'class' => 'medium merge-tag-support mt-position-right mt-hide_all_fields',
'label' => esc_html__( 'Name', 'gravityformstrello' ),
'default_value' => 'New submission from {form_title}',
),
array(
'name' => 'cardDescription',
'type' => 'textarea',
'required' => false,
'class' => 'medium merge-tag-support mt-position-right mt-hide_all_fields',
'label' => esc_html__( 'Description', 'gravityformstrello' ),
),
array(
'name' => 'cardDueDate',
'type' => 'select_custom',
'label' => esc_html__( 'Due Date', 'gravityformstrello' ),
'after_input' => ' ' . esc_html__( 'days after today', 'gravityformstrello' ),
'choices' => $this->get_date_fields_for_feed_setting(),
'input_type' => 'number'
),
array(
'name' => 'cardLabels',
'type' => 'checkbox',
'label' => __( 'Labels', 'gravityformstrello' ),
'choices' => $this->get_labels_for_feed_setting()
),
array(
'name' => 'cardMembers',
'type' => 'checkbox',
'label' => esc_html__( 'Members', 'gravityformstrello' ),
'choices' => $this->get_members_for_feed_setting()
),
),
),
array(
'title' => esc_html__( 'Feed Conditional Logic', 'gravityformstrello' ),
'dependency' => 'list',
'fields' => array(
array(
'name' => 'feedCondition',
'type' => 'feed_condition',
'label' => esc_html__( 'Conditional Logic', 'gravityformstrello' ),
'checkbox_label' => esc_html__( 'Enable', 'gravityformstrello' ),
'instructions' => esc_html__( 'Export to Trello if', 'gravityformstrello' ),
'tooltip' => sprintf(
'<h6>%s</h6>%s',
esc_html__( 'Conditional Logic', 'gravityformstrello' ),
esc_html__( 'When conditional logic is enabled, form submissions will only be exported to Trello when the condition is met. When disabled, all form submissions will be posted.', 'gravityformstrello' )
),
),
),
),
);
// Get upload fields.
$upload_fields = $this->get_upload_fields_for_feed_setting();
// If upload fields were found, add settings field.
if ( ! empty( $upload_fields ) ) {
// Prepare settings field.
$attachment_field = array(
'name' => 'cardAttachments',
'type' => 'checkbox',
'label' => esc_html__( 'Attachments', 'gravityformstrello' ),
'choices' => $upload_fields
);
// Add field.
$sections = $this->add_field_after( 'cardMembers', $attachment_field, $sections );
}
return $sections;
}
/**
* Prepare Trello boards for feed setting.
*
* @since 1.0
* @access public
*
* @uses GFAddOn::get_setting()
* @uses GFAddOn::log_debug()
* @uses GFAddOn::log_error()
* @uses GFTrello::initialize_error()
*
* @return array $choices
*/
public function get_boards_for_feed_setting() {
// Initialize choices array.
$choices = array();
// If we are unable to initialize the API, return the choices array.
if ( ! $this->initialize_api() ) {
$this->log_error( __METHOD__ . '(): Unable to get boards because API is not initialized.' );
return $choices;
}
try {
// Get the Trello boards.
$boards = $this->api->members->get( 'my/boards' );
// Log returned boards.
$this->log_debug( __METHOD__ . '(): Boards: ' . print_r( $boards, true ) );
} catch ( \Exception $e ) {
// Log that we could not retreive the boards.
$this->log_error( __METHOD__ . '(): Unable to retrieve boards; ' . $e->getMessage() );
return $choices;
}
// If no boards were found, return.
if ( empty( $boards ) ) {
return $choices;
}
// Add initial choice.
$choices[] = array(
'label' => esc_html__( 'Select a Board', 'gravityformstrello' ),
'value' => '',
);
// Loop through boards.
foreach ( $boards as $board ) {
// Add board as choice.
$choices[] = array(
'label' => esc_html( $board->name ),
'value' => esc_attr( $board->id ),
);
}
return $choices;
}
/**
* Prepare Trello lists for feed setting.
*
* @since 1.0
* @access public
*
* @uses GFAddOn::get_setting()
* @uses GFAddOn::log_debug()
* @uses GFAddOn::log_error()
* @uses GFTrello::initialize_error()
*
* @return array $choices
*/
public function get_lists_for_feed_setting() {
// Initialize choices array.
$choices = array();
// If we are unable to initialize the API, return the choices array.
if ( ! $this->initialize_api() ) {
$this->log_error( __METHOD__ . '(): Unable to get lists because API is not initialized.' );
return $choices;
}
// Get current board.
$board = $this->get_setting( 'board' );
try {
// Get the Trello lists.
$lists = $this->api->boards->get( $board . '/lists' );
// Log returned lists.
$this->log_debug( __METHOD__ . '(): Lists for board #' . $board . ': ' . print_r( $lists, true ) );
} catch ( \Exception $e ) {
// Log that we could not retreive the lists.
$this->log_error( __METHOD__ . '(): Unable to retrieve lists; ' . $e->getMessage() );
return $choices;
}
// If no lists were found, return.
if ( empty( $lists ) ) {
return $choices;
}
// Add initial choice.
$choices[] = array(
'label' => esc_html__( 'Select a List', 'gravityformstrello' ),
'value' => '',
);
// Loop through lists.
foreach ( $lists as $list ) {
// Add list as choice.
$choices[] = array(
'label' => esc_html( $list->name ),
'value' => esc_attr( $list->id ),
);
}
return $choices;
}
/**
* Prepare Trello labels for feed setting.
*
* @since 1.0
* @access public
*
* @uses GFAddOn::get_setting()
* @uses GFAddOn::log_debug()
* @uses GFAddOn::log_error()
* @uses GFTrello::initialize_error()
*
* @return array $choices
*/
public function get_labels_for_feed_setting() {
// Initialize choices array.
$choices = array();
// If we are unable to initialize the API, return the choices array.
if ( ! $this->initialize_api() ) {
$this->log_error( __METHOD__ . '(): Unable to get labels because API is not initialized.' );
return $choices;
}
// Get current board.
$board = $this->get_setting( 'board' );
try {
// Get the Trello labels.
$labels = $this->api->boards->get( $board . '/labels' );
// Log returned labels.
$this->log_debug( __METHOD__ . '(): Labels for board #' . $board . ': ' . print_r( $labels, true ) );
} catch ( \Exception $e ) {
// Log that we could not retreive the labels.
$this->log_error( __METHOD__ . '(): Unable to retrieve labels; ' . $e->getMessage() );
return $choices;
}
// If no labels were found, return.
if ( empty( $labels ) ) {
return $choices;
}
// Loop through labels.
foreach ( $labels as $label ) {
// Add label as choice.
$choices[] = array(
'label' => rgblank( $label->name ) ? ucwords( $label->color ) : $label->name,
'name' => 'cardLabels[' . $label->id . ']',
);
}
return $choices;
}
/**
* Prepare Trello members for feed setting.
*
* @since 1.0
* @access public
*
* @uses GFAddOn::get_setting()
* @uses GFAddOn::log_debug()
* @uses GFAddOn::log_error()
* @uses GFTrello::initialize_error()
*
* @return array $choices
*/
public function get_members_for_feed_setting() {
// Initialize choices array.
$choices = array();
// If we are unable to initialize the API, return the choices array.
if ( ! $this->initialize_api() ) {
$this->log_error( __METHOD__ . '(): Unable to get members because API is not initialized.' );
return $choices;
}
// Get current board.
$board = $this->get_setting( 'board' );
try {
// Get the Trello members.
$members = $this->api->boards->get( $board . '/members' );
// Log returned members.
$this->log_debug( __METHOD__ . '(): Members for board #' . $board . ': ' . print_r( $members, true ) );
} catch ( \Exception $e ) {
// Log that we could not retreive the members.
$this->log_error( __METHOD__ . '(): Unable to retrieve members; ' . $e->getMessage() );
return $choices;
}
// If no members were found, return.
if ( empty( $members ) ) {
return $choices;
}
// Loop through members.
foreach ( $members as $member ) {
// Add member as choice.
$choices[] = array(
'label' => esc_html( $member->fullName ),
'name' => 'cardMembers[' . $member->id . ']',
);
}