<?php
namespace Abdiel_AMM;

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

require_once ABDIEL_AMM_DIR . 'includes/class-abdiel-amm-i18n.php';
require_once ABDIEL_AMM_DIR . 'includes/class-abdiel-amm-settings.php';
require_once ABDIEL_AMM_DIR . 'includes/class-abdiel-amm-content.php';
require_once ABDIEL_AMM_DIR . 'includes/class-abdiel-amm-switcher.php';
require_once ABDIEL_AMM_DIR . 'includes/class-abdiel-amm-seo.php';
require_once ABDIEL_AMM_DIR . 'includes/class-abdiel-amm-router.php';
require_once ABDIEL_AMM_DIR . 'includes/class-abdiel-amm-elementor.php';
require_once ABDIEL_AMM_DIR . 'includes/class-abdiel-amm-assignments.php';
require_once ABDIEL_AMM_DIR . 'includes/class-abdiel-amm-menu-switcher.php';

final class Plugin {

    private static $instance = null;

    /** @var I18n */
    public $i18n;

    /** @var Settings */
    public $settings;

    /** @var Content */
    public $content;

    /** @var Switcher */
    public $switcher;

    /** @var SEO */
    public $seo;

    public static function instance() {
        if ( null === self::$instance ) {
            self::$instance = new self();
        }
        return self::$instance;
    }

    private function __construct() {
        $this->i18n     = new I18n();
        $this->settings = new Settings();
        $this->content  = new Content();
        $this->switcher = new Switcher();
        $this->seo      = new SEO();
        ( new Elementor() )->hooks();
        ( new Assignments() )->hooks();
        ( new Menu_Switcher() )->hooks();
        ( new Router() )->hooks();
        add_action( 'admin_init', [ $this, 'maybe_flush_rewrites' ] );

        // Translations hosted on WordPress.org are loaded automatically.

        register_activation_hook( ABDIEL_AMM_FILE, [ __CLASS__, 'activate' ] );
        register_deactivation_hook( ABDIEL_AMM_FILE, [ __CLASS__, 'deactivate' ] );

        $this->settings->hooks();
        $this->content->hooks();
        $this->switcher->hooks();
        $this->seo->hooks();

        add_filter( 'body_class', [ $this, 'body_class' ] );
    }

    public static function activate() {
        // Seed default languages on first activation (English + Spanish).
        // Users can edit/delete/add languages as needed.
        $langs = get_option( 'abdiel_amm_languages', false );
        $needs_seed = ( false === $langs ) || ( is_array( $langs ) && empty( $langs['items'] ) );
        if ( $needs_seed ) {
            $locale = function_exists( 'determine_locale' ) ? determine_locale() : get_locale();
            $locale = is_string( $locale ) ? strtolower( $locale ) : '';

            $default_code = '';
            if ( strpos( $locale, 'es' ) === 0 ) {
                $default_code = 'es';
            } elseif ( strpos( $locale, 'en' ) === 0 ) {
                $default_code = 'en';
            }

            $seed = [
                'default' => $default_code,
                'items'   => [
                    'en' => [
                        'name'   => 'English',
                        'active' => 1,
                        'order'  => 1,
                        'icon'   => 0,
                    ],
                    'es' => [
                        'name'   => 'Español',
                        'active' => 1,
                        'order'  => 2,
                        'icon'   => 0,
                    ],
                ],
            ];

            if ( false === $langs ) {
                add_option( 'abdiel_amm_languages', $seed );
            } else {
                update_option( 'abdiel_amm_languages', $seed );
            }
        }
        if ( false === get_option( 'abdiel_amm_settings', false ) ) {
            $settings = [
                'enabled_post_types' => [ 'page', 'post' ],
                'switcher_mode'      => 'shortcode', // shortcode|menu|floating
                'switcher_show_name' => 1,
                'switcher_show_icon' => 0,
                'switcher_show_code' => 0,
                'floating_position'  => 'br', // tl|tr|bl|br
                'delete_data_on_uninstall' => 0,
                'url_mode' => 'prefix',
            ];
            add_option( 'abdiel_amm_settings', $settings );
        }
    }

    public static function deactivate() {
        // Intentionally empty. Keep data by default.
    }

    public function body_class( $classes ) {
        $lang = $this->content->get_current_language_code();
        if ( $lang ) {
            $classes[] = 'abdiel-amm-lang-' . sanitize_html_class( $lang );
        }
        return $classes;
    }

    public function maybe_flush_rewrites() {
        if ( ! current_user_can( 'manage_options' ) ) { return; }
        if ( get_transient( 'abdiel_amm_flush_rewrites' ) ) {
            delete_transient( 'abdiel_amm_flush_rewrites' );
            flush_rewrite_rules();
        }
    }

}