<?php
/**
 * The main Charitable Stripe class.
 *
 * The responsibility of this class is to load all the plugin's functionality.
 *
 * @package   Charitable Stripe
 * @copyright Copyright (c) 2021-2022, David Bisset
 * @license   http://opensource.org/licenses/gpl-1.0.0.php GNU Public License
 * @since     1.0.0
 * @version   1.4.14
 */

// Exit if accessed directly.
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

if ( ! class_exists( 'Charitable_Stripe' ) ) :

	/**
	 * Charitable_Stripe
	 *
	 * @since 1.0.0
	 */
	class Charitable_Stripe {

		/** The plugin version. */
		const VERSION = '1.4.14';

		/** The product name. */
		const NAME = 'Charitable Stripe';

		/** The plugin author name. */
		const AUTHOR = 'WP Charitable LLC';

		/**
		 * The one and only class instance.
		 *
		 * @since 1.0.0
		 *
		 * @var   Charitable_Stripe
		 */
		private static $instance = null;

		/**
		 * The root file of the plugin.
		 *
		 * @since 1.0.0
		 *
		 * @var   string
		 */
		private $plugin_file;

		/**
		 * The root directory of the plugin.
		 *
		 * @since 1.0.0
		 *
		 * @var   string
		 */
		private $directory_path;

		/**
		 * The root directory of the plugin as a URL.
		 *
		 * @since 1.0.0
		 *
		 * @var   string
		 */
		private $directory_url;

		/**
		 * Create class instance.
		 *
		 * @since 1.0.0
		 *
		 * @param string $plugin_file The path to the main plugin file.
		 */
		public function __construct( $plugin_file ) {
			$this->plugin_file    = $plugin_file;
			$this->directory_path = plugin_dir_path( $plugin_file );
			$this->directory_url  = plugin_dir_url( $plugin_file );

			add_action( 'charitable_start', array( $this, 'start' ), 1 );
		}

		/**
		 * Returns the original instance of this class.
		 *
		 * @since  1.0.0
		 *
		 * @return Charitable_Stripe
		 */
		public static function get_instance() {
			return self::$instance;
		}

		/**
		 * Run the startup sequence on the charitable_start hook.
		 *
		 * This is only ever executed once.
		 *
		 * @since  1.0.0
		 *
		 * @return void
		 */
		public function start() {
			/* If we've already started (i.e. run this function once before), do not pass go. */
			if ( $this->started() ) {
				return;
			}

			/* Set static instance. */
			self::$instance = $this;

			$this->load_dependencies();

			$this->setup_licensing();

			$this->setup_i18n();

			$this->maybe_start_admin();

			$this->attach_hooks_and_filters();

			// Set up classes.
			new Charitable_Stripe_Privacy();

			// Hook in here to do something when the plugin is first loaded.
			do_action( 'charitable_stripe_start', $this );
		}

		/**
		 * Include necessary files.
		 *
		 * @since  1.0.0
		 *
		 * @return void
		 */
		private function load_dependencies() {
			$dir = $this->get_path( 'includes' );

			/* Load Stripe SDK */
			require_once( $this->get_path( 'directory' ) . 'vendor/autoload.php' );

			/* Interfaces */
			require_once( $dir . 'interfaces/interface-charitable-stripe-gateway-processor.php' );

			/* Abstract classes */
			require_once( $dir . 'abstracts/class-charitable-stripe-gateway-processor.php' );

			/* Classes */
			require_once( $dir . 'donations/class-charitable-stripe-donation-log.php' );
			require_once( $dir . 'donations/class-charitable-stripe-recurring-donation-log.php' );
			require_once( $dir . 'i18n/class-charitable-stripe-i18n.php' );
			require_once( $dir . 'gateway/class-charitable-gateway-stripe.php' );
			require_once( $dir . 'gateway/class-charitable-stripe-connected-customer.php' );
			require_once( $dir . 'gateway/class-charitable-stripe-customer.php' );
			require_once( $dir . 'gateway/class-charitable-stripe-gateway-processor-checkout.php' );
			require_once( $dir . 'gateway/class-charitable-stripe-gateway-processor-payment-intents.php' );
			require_once( $dir . 'gateway/class-charitable-stripe-payment-intent.php' );
			require_once( $dir . 'gateway/class-charitable-stripe-plan.php' );
			require_once( $dir . 'gateway/class-charitable-stripe-product.php' );
			require_once( $dir . 'gateway/class-charitable-stripe-webhook-api.php' );
			require_once( $dir . 'gateway/class-charitable-stripe-webhook-processor.php' );
			require_once( $dir . 'privacy/class-charitable-stripe-privacy.php' );
			require_once( $dir . 'public/class-charitable-stripe-template.php' );

			/* Upgrades */
			require_once( $dir . 'upgrades/class-charitable-stripe-upgrade.php' );

			/* Functions & Hooks */
			require_once( $dir . 'charitable-stripe-core-functions.php' );
			require_once( $dir . 'donations/charitable-stripe-donation-functions.php' );
			require_once( $dir . 'gateway/charitable-stripe-gateway-hooks.php' );
			require_once( $dir . 'compat/charitable-stripe-compat-functions.php' );

			/* Stripe Connect compatibility */
			if ( class_exists( 'Charitable_Stripe_Connect' ) ) {
				require_once( $dir . 'connect/charitable-stripe-connect-functions.php' );
			}
		}

		/**
		 * Set up hook and filter callback functions.
		 *
		 * @since  1.0.0
		 *
		 * @return void
		 */
		private function attach_hooks_and_filters() {
			/**
			 * Prepare Recurring Donations compatibility.
			 */
			add_action( 'charitable_recurring_start', array( $this, 'load_recurring_compat' ) );

			/**
			 * Set up scripts & stylesheets & enqueue them when appropriate.
			 */
			add_action( 'wp_enqueue_scripts', array( $this, 'setup_scripts' ), 11 );
			add_action( 'charitable_form_after_fields', array( $this, 'maybe_setup_scripts_in_donation_form' ) );
			add_action( 'charitable_campaign_loop_after', array( $this, 'maybe_setup_scripts_in_campaign_loop' ) );

			/**
			 * Do some tweaks to the template.
			 */
			add_action( 'after_setup_theme', array( $this, 'setup_template_tweaks' ), 11 );

			/**
			 * Backwards compat for Charitable < 1.4.0.
			 */
			if ( version_compare( charitable()->get_version(), '1.4.0', '<' ) ) {
				add_filter( 'charitable_javascript_vars', array( $this, 'set_js_error_messages' ) );
			}

			/**
			 * Set up upgrade process.
			 */
			add_action( 'admin_notices', array( Charitable_Stripe_Upgrade::get_instance(), 'add_upgrade_notice' ) );
			add_action( 'init', array( Charitable_Stripe_Upgrade::get_instance(), 'do_immediate_upgrades' ), 5 );

			/**
			 * Specific upgrade processes.
			 */
			add_action( 'charitable_stripe_update_hidden_settings', array( Charitable_Stripe_Upgrade::get_instance(), 'update_hidden_settings' ) );

			/**
			 * Require SSL on the donation page and webhook listener.
			 */
			add_filter( 'charitable_campaign_donation_endpoint_force_https', '__return_true' );
			add_filter( 'charitable_webhook_listener_endpoint_force_https', '__return_true' );
		}

		/**
		 * Set up licensing for the extension.
		 *
		 * @since  1.0.0
		 *
		 * @return void
		 */
		public function setup_licensing() {
			charitable_get_helper( 'licenses' )->register_licensed_product(
				Charitable_Stripe::NAME,
				Charitable_Stripe::AUTHOR,
				Charitable_Stripe::VERSION,
				$this->plugin_file
			);
		}

		/**
		 * Set up the internationalisation for the plugin.
		 *
		 * @since  1.0.0
		 *
		 * @return void
		 */
		private function setup_i18n() {
			if ( class_exists( 'Charitable_i18n' ) ) {

				require_once( $this->get_path( 'includes' ) . 'i18n/class-charitable-stripe-i18n.php' );

				Charitable_Stripe_i18n::get_instance();
			}
		}

		/**
		 * Load the admin-only functionality.
		 *
		 * @since  1.1.0
		 *
		 * @return void
		 */
		private function maybe_start_admin() {
			if ( ! is_admin() ) {
				return;
			}

			require_once( $this->get_path( 'includes' ) . 'admin/class-charitable-stripe-admin.php' );

			new Charitable_Stripe_Admin;
		}

		/**
		 * Register Stripe scripts.
		 *
		 * @since  1.1.0
		 *
		 * @return void
		 */
		public function setup_scripts() {
			if ( is_admin() ) {
				return;
			}

			if ( defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ) {
				$version = '';
				$suffix  = '';
			} else {
				$version = $this->get_version();
				$suffix  = '.min';
			}

			$gateway = new Charitable_Gateway_Stripe_AM;
			$keys    = $gateway->get_keys();

			$stripe_vars = array(
				'key'          => $keys['public_key'],
				'currency'     => charitable_get_currency(),
				'site_name'    => get_option( 'blogname' ),
				'zero_decimal' => Charitable_Gateway_Stripe_AM::is_zero_decimal_currency(),
			);

			/* Register Stripe JS script. */
			wp_register_script(
				'stripe-v3',
				'https://js.stripe.com/v3/',
				array(),
				$version,
				true
			);

			$dependencies = array( 'charitable-script', 'stripe-v3', 'jquery' );

			if ( charitable_get_option( array( 'gateways_stripe', 'enable_stripe_checkout' ) ) ) {
				$stripe_vars['mode'] = 'checkout';
			} else {
				$stripe_vars['mode'] = 'payment-intents';
			}

			wp_register_script(
				'charitable-stripe',
				$this->get_path( 'assets', false ) . 'js/charitable-stripe' . $suffix . '.js',
				$dependencies,
				$version,
				true
			);

			wp_localize_script(
				'charitable-stripe',
				'CHARITABLE_STRIPE_VARS',
				$stripe_vars
			);

			if ( 'payment-intents' == $stripe_vars['mode'] ) {
				/**
				 * Prevent the Stripe script from loading site-wide.
				 *
				 * @since 1.4.3
				 *
				 * @param boolean $load Whether to load the scripts sitewide. Defaults to true.
				 */
				if ( apply_filters( 'charitable_stripe_load_stripe_scripts_sitewide', true ) ) {
					wp_enqueue_script( 'stripe-v3' );
				}
			}
		}


		/**
		 * Load Stripe JS, as well as our handling scripts.
		 *
		 * @since  1.4.0
		 *
		 * @return boolean
		 */
		public function enqueue_scripts() {
			if ( ! Charitable_Gateways::get_instance()->is_active_gateway( Charitable_Gateway_Stripe_AM::get_gateway_id() ) ) {
				return false;
			}

			wp_enqueue_script( 'charitable-stripe' );

			return true;
		}

		/**
		 * Load Stripe JS or Stripe Checkout, as well as our handling script.
		 *
		 * @uses   Charitable_Stripe::enqueue_scripts()
		 *
		 * @since  1.4.0
		 *
		 * @param  Charitable_Donation_Form $form The current form object.
		 * @return boolean
		 */
		public function maybe_setup_scripts_in_donation_form( $form ) {
			if ( ! is_a( $form, 'Charitable_Donation_Form' ) ) {
				return false;
			}

			if ( 'make_donation' !== $form->get_form_action() ) {
				return false;
			}

			return $this->enqueue_scripts();
		}

		/**
		 * Enqueue the Stripe JS/Checkout scripts after a campaign loop if modal donations are in use.
		 *
		 * @uses Charitable_Stripe::enqueue_scripts()
		 *
		 * @since  1.4.0
		 *
		 * @return boolean
		 */
		public function maybe_setup_scripts_in_campaign_loop() {
			if ( 'modal' !== charitable_get_option( 'donation_form_display', 'separate_page' ) ) {
				return false;
			}

			return $this->enqueue_scripts();
		}

		/**
		 * Set up some template tweaks.
		 *
		 * @since  1.4.3
		 *
		 * @return void
		 */
		public function setup_template_tweaks() {
			/**
			 * Block modal donations in the loop if payment intents are
			 * on and modal donations are turned on.
			 */
			if ( ! charitable_get_option( array( 'gateways_stripe', 'enable_stripe_checkout' ), false ) ) {
				remove_action( 'charitable_campaign_loop_before', 'charitable_template_campaign_loop_add_modal' );
			}
		}

		/**
		 * Load Recurring compat file.
		 *
		 * @since  1.3.0
		 *
		 * @return void
		 */
		public function load_recurring_compat() {
			require_once( $this->get_path( 'includes' ) . 'compat/charitable-stripe-recurring-compat-functions.php' );
		}

		/**
		 * Set the error message for invalid amount when a donation form is submitted.
		 *
		 * This function can be removed once Charitable 1.4 is out and about.
		 *
		 * @since  1.0.0
		 *
		 * @param  string[] $vars Javascript vars.
		 * @return string[]
		 */
		public function set_js_error_messages( $vars ) {
			$vars['error_invalid_amount'] = sprintf(
				/* translators: %s: formatted monetary amount. */
				__( 'You must donate more than %s.', 'charitable-stripe' ),
				charitable_format_money( '0' )
			);
			$vars['error_invalid_cc_number'] = __( 'The credit card passed is not valid.', 'charitable-stripe' );
			$vars['error_invalid_cc_expiry'] = __( 'The credit card expiry date is not valid.', 'charitable-stripe' );
			return $vars;
		}

		/**
		 * Returns whether we are currently in the start phase of the plugin.
		 *
		 * @since  1.0.0
		 *
		 * @return boolean
		 */
		public function is_start() {
			return current_filter() === 'charitable_stripe_start';
		}

		/**
		 * Returns whether the plugin has already started.
		 *
		 * @since  1.0.0
		 *
		 * @return boolean
		 */
		public function started() {
			return did_action( 'charitable_stripe_start' ) || current_filter() === 'charitable_stripe_start';
		}

		/**
		 * Returns the plugin's version number.
		 *
		 * @since  1.0.0
		 *
		 * @return string
		 */
		public function get_version() {
			return self::VERSION;
		}

		/**
		 * Returns plugin paths.
		 *
		 * @since  1.0.0
		 *
		 * @param  string  $type          If empty, returns the path to the plugin.
		 * @param  boolean $absolute_path If true, returns the file system path. If false, returns it as a URL.
		 * @return string
		 */
		public function get_path( $type = '', $absolute_path = true ) {
			$base = $absolute_path ? $this->directory_path : $this->directory_url;

			switch ( $type ) {
				case 'includes':
					$path = $base . 'includes/';
					break;

				case 'admin':
					$path = $base . 'includes/admin/';
					break;

				case 'templates':
					$path = $base . 'templates/';
					break;

				case 'assets':
					$path = $base . 'assets/';
					break;

				case 'directory':
					$path = $base;
					break;

				default:
					$path = $this->plugin_file;

			}//end switch

			return $path;
		}

		/**
		 * Throw error on object clone.
		 *
		 * This class is specifically designed to be instantiated once.
		 *
		 * @return void
		 *
		 * @since  1.0.0
		 */
		public function __clone() {
			charitable_get_deprecated()->doing_it_wrong(
				__FUNCTION__,
				__( 'Cloning this object is forbidden.', 'charitable-stripe' ),
				'1.0.0'
			);
		}

		/**
		 * Disable unserializing of the class.
		 *
		 * @return void
		 *
		 * @since  1.0.0
		 */
		public function __wakeup() {
			charitable_get_deprecated()->doing_it_wrong(
				__FUNCTION__,
				__( 'Unserializing instances of this class is forbidden.', 'charitable-stripe' ),
				'1.0.0'
			);
		}
	}

endif;