<?php
/**
 * Core plugin bootstrap.
 *
 * @package Plectrum
 */

namespace DA_Plectrum;

defined( 'ABSPATH' ) || exit;

require_once DA_PLECTRUM_PLUGIN_DIR . 'includes/class-assets.php';
require_once DA_PLECTRUM_PLUGIN_DIR . 'includes/class-settings.php';
require_once DA_PLECTRUM_PLUGIN_DIR . 'includes/class-shortcode.php';
require_once DA_PLECTRUM_PLUGIN_DIR . 'includes/class-parser.php';
require_once DA_PLECTRUM_PLUGIN_DIR . 'includes/class-renderer.php';
require_once DA_PLECTRUM_PLUGIN_DIR . 'includes/chord-library.php';

/**
 * Wires together the plugin services and WordPress hooks.
 */
class Plugin {
	/**
	 * Singleton instance.
	 *
	 * @var Plugin|null
	 */
	private static $instance = null;

	/**
	 * Asset manager.
	 *
	 * @var Assets
	 */
	private $assets;

	/**
	 * Settings manager.
	 *
	 * @var Settings
	 */
	private $settings;

	/**
	 * Shortcode handler.
	 *
	 * @var Shortcode
	 */
	private $shortcode;

	/**
	 * Get singleton instance.
	 *
	 * @return Plugin
	 */
	public static function instance() {
		if ( null === self::$instance ) {
			self::$instance = new self();
		}

		return self::$instance;
	}

	/**
	 * Activate plugin.
	 *
	 * @return void
	 */
	public static function activate() {
		$defaults = Settings::get_default_settings();
		$current  = get_option( DA_PLECTRUM_OPTION_KEY, array() );

		if ( ! is_array( $current ) ) {
			$current = array();
		}

		add_option( DA_PLECTRUM_OPTION_KEY, wp_parse_args( $current, $defaults ) );
	}

	/**
	 * Constructor.
	 */
	private function __construct() {
		$this->assets    = new Assets();
		$this->settings  = new Settings();
		$this->shortcode = new Shortcode( new Parser(), new Renderer(), $this->assets, $this->settings );

		add_action( 'init', array( $this->shortcode, 'register' ) );
		add_action( 'wp', array( $this->shortcode, 'prime_frontend_assets' ) );
		add_action( 'wp_enqueue_scripts', array( $this->assets, 'register_frontend_assets' ) );
		add_action( 'admin_enqueue_scripts', array( $this->assets, 'register_admin_assets' ) );
		add_action( 'admin_enqueue_scripts', array( $this->settings, 'enqueue_admin_assets' ) );
		add_action( 'admin_menu', array( $this->settings, 'register_settings_page' ) );
		add_action( 'admin_init', array( $this->settings, 'register_settings' ) );
	}
}