QuickBooks: Add OAuth2 authentication flow (#285)

Our current QuickBooks authentication uses OAuth 1.0, however Intuit is deprecating that method on December 17th in favor of OAuth 2.0. This adds tools to authenticate with OAuth 2.0, using Intuit's QuickBooks V3 PHP SDK. This will also set us up for using more of the SDK's functionality in the future for improvements to our payments and reporting.

Fixes #283

.docker/wp-config.php

@@ -17,7 +17,7 @@
 define( 'CUSTOM_USER_TABLE',      'wc_users'    );
 define( 'CUSTOM_USER_META_TABLE', 'wc_usermeta' );
 
-$table_prefix  = 'wc_';
+$table_prefix = 'wc_'; // phpcs:ignore WordPress.WP.GlobalVariablesOverride
 
 /*
  * Multisite
@@ -28,13 +28,13 @@
 	$wcorg_domain_current_site = 'wordcamp.test';
 }
 
-define( 'WP_ALLOW_MULTISITE',   true ); // Temporary workaround for https://github.com/Automattic/wp-super-cache/issues/97
+define( 'WP_ALLOW_MULTISITE',   true ); // Temporary workaround for https://github.com/Automattic/wp-super-cache/issues/97.
 define( 'MULTISITE',            true );
 define( 'SUBDOMAIN_INSTALL',    true );
 define( 'DOMAIN_CURRENT_SITE',  $wcorg_domain_current_site );
 define( 'PATH_CURRENT_SITE',    '/' );
 define( 'SITE_ID_CURRENT_SITE',  1 );
-define( 'BLOG_ID_CURRENT_SITE',  5 ); // central.wordcamp.test
+define( 'BLOG_ID_CURRENT_SITE',  5 ); // central.wordcamp.test.
 define( 'NOBLOGREDIRECT',       'https://central.wordcamp.test' );
 define( 'SUNRISE',               true );
 define( 'CLI_HOSTNAME_OVERRIDE', 'wordcamp.test' );
@@ -48,7 +48,7 @@
 define( 'WP_DEBUG_DISPLAY', true );
 define( 'SAVEQUERIES',      true );
 define( 'DIEONDBERROR',     false );
-define( 'SCRIPT_DEBUG',     false ); // Temporarily disabled because of https://github.com/WordPress/gutenberg/issues/7897 / https://github.com/WordPress/gutenberg/issues/11360
+define( 'SCRIPT_DEBUG',     false ); // Temporarily disabled because of https://github.com/WordPress/gutenberg/issues/7897 / https://github.com/WordPress/gutenberg/issues/11360.
 define( 'JETPACK_DEV_DEBUG', true );
 
 
@@ -89,7 +89,7 @@
 define( 'EMAIL_CENTRAL_SUPPORT',         '[email protected]' );
 
 $trusted_deputies = array(
-	3, // role-tester
+	3, // role-tester.
 );
 
 
@@ -108,6 +108,11 @@
 define( 'WORDCAMP_QBO_CONSUMER_SECRET', '' );
 define( 'WORDCAMP_QBO_HMAC_KEY',        '' );
 
+define( 'WORDCAMP_SANDBOX_QBO_CLIENT_ID',        '' );
+define( 'WORDCAMP_SANDBOX_QBO_CLIENT_SECRET',    '' );
+define( 'WORDCAMP_PRODUCTION_QBO_CLIENT_ID',     '' );
+define( 'WORDCAMP_PRODUCTION_QBO_CLIENT_SECRET', '' );
+
 define( 'REMOTE_CSS_GITHUB_ID',         '' );
 define( 'REMOTE_CSS_GITHUB_SECRET',     '' );
 

composer.json

@@ -12,9 +12,6 @@
 		},
 		"vendor-dir": "public_html/wp-content/mu-plugins/vendor"
 	},
-	"require": {
-		"league/oauth2-client": "2.4.1"
-	},
 	"require-dev": {
 		"dealerdirect/phpcodesniffer-composer-installer": "^0.5.0",
 		"wp-coding-standards/wpcs": "2.*",