<?php
namespace PostFee;

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

class Gateways {

	private static $gateways = null;

	public static function init() {
		foreach ( self::all() as $gateway ) {
			$gateway->hooks();
		}
	}

	/**
	 * @return Gateway[] Keyed by gateway ID.
	 */
	public static function all() {
		if ( null === self::$gateways ) {
			self::$gateways = array();
			$gateways       = apply_filters( 'postfee_gateways', array( new Gateway_Stripe(), new Gateway_PayPal(), new Gateway_WooCommerce() ) );
			foreach ( $gateways as $gateway ) {
				if ( $gateway instanceof Gateway ) {
					self::$gateways[ $gateway->id() ] = $gateway;
				}
			}
		}
		return self::$gateways;
	}

	public static function get( $id ) {
		$gateways = self::all();
		return isset( $gateways[ $id ] ) ? $gateways[ $id ] : null;
	}

	/**
	 * Gateways the site owner switched on that are ready to take this plan.
	 */
	public static function for_plan( $plan ) {
		$enabled = (array) postfee_setting( 'gateways', array() );
		$list    = array();
		foreach ( self::all() as $id => $gateway ) {
			if ( in_array( $id, $enabled, true ) && $gateway->is_available() && $gateway->supports( $plan ) ) {
				$list[ $id ] = $gateway;
			}
		}
		return $list;
	}
}