<?php

namespace WPDesk\PluginBuilder\Plugin;

/**
 * Base plugin with most basic functionalities used by every WPDesk plugin.
 *
 *
 * Known issues:
 *
 * The class name is too generic but can't be changed as it would introduce a major incompatibility for most of the plugins.
 * The $plugin_url, $docs_url and most other fields should be removed as they only litter the place but for compatibility reasons we can't do it right now.
 * Hook methods should be moved to external classes but for compatibility reasons we can't do it right now.
 */
abstract class AbstractPlugin extends SlimPlugin {

	/**
	 * Most info about plugin internals.
	 *
	 * @var \WPDesk_Plugin_Info
	 */
	protected $plugin_info;

	/**
	 * Unique string for this plugin in [a-z_]+ format.
	 *
	 * @var string
	 */
	protected $plugin_namespace;

	/**
	 * Absolute URL to the plugin dir.
	 *
	 * @var string
	 */
	protected $plugin_url;

	/**
	 * Absolute URL to the plugin docs.
	 *
	 * @var string
	 */
	protected $docs_url;

	/**
	 * Absolute URL to the plugin settings url.
	 *
	 * @var string
	 */
	protected $settings_url;

	/**
	 * Support URL.
	 *
	 * @var string
	 */
	protected $support_url;

	/**
	 * AbstractPlugin constructor.
	 *
	 * @param \WPDesk_Plugin_Info $plugin_info
	 */
	public function __construct( $plugin_info ) {
		$this->plugin_info      = $plugin_info;
		$this->plugin_namespace = strtolower( $plugin_info->get_plugin_dir() );
		$this->plugin_url       = $this->plugin_info->get_plugin_url();
		$this->init_base_variables();
	}

	/**
	 * Initialize internal state of the plugin.
	 *
	 * @return void
	 * @deprecated Just use __construct to initialize plugin internal state.
	 *
	 */
	public function init_base_variables() {
	}

	/**
	 * Initializes plugin external state.
	 *
	 * The plugin internal state is initialized in the constructor and the plugin should be internally consistent after creation.
	 * The external state includes hooks execution, communication with other plugins, integration with WC etc.
	 *
	 * @return void
	 */
	public function init() {
		$this->hooks();
	}

	/**
	 * Returns absolute path to the plugin dir.
	 *
	 * @return string
	 */
	public function get_plugin_file_path() {
		return $this->plugin_info->get_plugin_file_name();
	}

	/**
	 * Returns plugin text domain.
	 *
	 * @return string
	 */
	public function get_text_domain() {
		return $this->plugin_info->get_text_domain();
	}

	/**
	 * Returns unique string for plugin in [a-z_]+ format. Can be used as plugin id in various places like plugin slug etc.
	 *
	 * @return string
	 */
	public function get_namespace() {
		return $this->plugin_namespace;
	}

	/**
	 * Returns plugin absolute URL.
	 *
	 * @return string
	 */
	public function get_plugin_url() {
		return esc_url( trailingslashit( $this->plugin_url ) );
	}

	/**
	 * Returns plugin absolute URL to dir with front end assets.
	 *
	 * @return string
	 */
	public function get_plugin_assets_url() {
		return esc_url( trailingslashit( $this->get_plugin_url() . 'assets' ) );
	}

	/**
	 * @return $this
	 * @deprecated For backward compatibility.
	 *
	 */
	public function get_plugin() {
		return $this;
	}

	/**
	 * Integrate with WordPress and with other plugins using action/filter system.
	 *
	 * @return void
	 */
	protected function hooks() {
		add_action( 'admin_enqueue_scripts', [ $this, 'admin_enqueue_scripts' ] );
		add_action( 'wp_enqueue_scripts', [ $this, 'wp_enqueue_scripts' ] );
		add_filter( 'plugin_action_links_' . plugin_basename( $this->get_plugin_file_path() ), [
			$this,
			'links_filter'
		] );
	}

	/**
	 * Append JS scripts in the WordPress admin panel. This is a hook function. Do not execute directly.
	 *
	 * @return void
	 */
	public function admin_enqueue_scripts() {
	}

	/**
	 * Append JS scripts in WordPress. This is a hook function. Do not execute directly.
	 *
	 * @return void
	 */
	public function wp_enqueue_scripts() {
	}

	/**
	 * Initialize plugin admin links. This is a hook function. Do not execute directly.
	 *
	 * @param string[] $links
	 *
	 * @return string[]
	 */
	public function links_filter( $links ) {
		$support_link = get_locale() === 'pl_PL' ? 'https://www.wpdesk.pl/support/' : 'https://www.wpdesk.net/support';

		if ( $this->support_url ) {
			$support_link = $this->support_url;
		}

		$plugin_links = [
			'<a target="_blank" href="' . $support_link . '">' . esc_html__( 'Support', 'wpdesk-wp-builder' ) . '</a>',
		];
		$links        = array_merge( $plugin_links, $links );

		if ( $this->docs_url ) {
			$plugin_links = [
				'<a target="_blank" href="' . $this->docs_url . '">' . esc_html__( 'Docs', 'wpdesk-wp-builder' ) . '</a>',
			];
			$links        = array_merge( $plugin_links, $links );
		}

		if ( $this->settings_url ) {
			$plugin_links = [
				'<a href="' . $this->settings_url . '">' . esc_html__( 'Settings', 'wpdesk-wp-builder' ) . '</a>',
			];
			$links        = array_merge( $plugin_links, $links );
		}

		return $links;
	}

}

