<?php
/**
 * Plugin Name:       FP Genocide Maps
 * Plugin URI:        https://freepress.coop
 * Description:       Manages the "Architecture of Genocide" maps shown on the home page. Each map is a post (title + description + image); the [geep_maps] shortcode renders the accordion + map image replicating the original Divi design, swapping the image when a toggle is opened.
 * Version:           1.6.0
 * Author:            Freepress Coop
 * Author URI:        https://www.freepress.coop
 * Requires PHP:      7.4
 * License:           GPL-2.0-or-later
 * Text Domain:       fp-genocide-maps
 *
 * @package FP_Genocide_Maps
 */

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

const FPGM_CPT     = 'geep_map';
const FPGM_VERSION = '1.6.0';

/**
 * Register the Map custom post type (admin-only, not publicly queryable).
 */
function fpgm_register_cpt() {
	register_post_type(
		FPGM_CPT,
		array(
			'labels'              => array(
				'name'               => __( 'Genocide Maps', 'fp-genocide-maps' ),
				'singular_name'      => __( 'Map', 'fp-genocide-maps' ),
				'add_new'            => __( 'Add New Map', 'fp-genocide-maps' ),
				'add_new_item'       => __( 'Add New Map', 'fp-genocide-maps' ),
				'edit_item'          => __( 'Edit Map', 'fp-genocide-maps' ),
				'new_item'           => __( 'New Map', 'fp-genocide-maps' ),
				'view_item'          => __( 'View Map', 'fp-genocide-maps' ),
				'search_items'       => __( 'Search Maps', 'fp-genocide-maps' ),
				'not_found'          => __( 'No maps found', 'fp-genocide-maps' ),
				'featured_image'     => __( 'Map image', 'fp-genocide-maps' ),
				'set_featured_image' => __( 'Select map image', 'fp-genocide-maps' ),
			),
			'public'              => false,
			'show_ui'             => true,
			'show_in_menu'        => true,
			'show_in_rest'        => false,
			'exclude_from_search' => true,
			'menu_icon'           => 'dashicons-location-alt',
			'menu_position'       => 21,
			'supports'            => array( 'title', 'editor', 'thumbnail', 'page-attributes' ),
			'hierarchical'        => false,
		)
	);
}
add_action( 'init', 'fpgm_register_cpt' );

/**
 * Front-end assets. The stylesheet replicates the exact Divi-generated design
 * of the original section, so it is tiny and safe to load site-wide.
 */
function fpgm_enqueue_assets() {
	wp_enqueue_style( 'fpgm-maps', plugins_url( 'assets/css/geep-maps.css', __FILE__ ), array(), FPGM_VERSION );
	wp_enqueue_script( 'fpgm-maps', plugins_url( 'assets/js/geep-maps.js', __FILE__ ), array(), FPGM_VERSION, true );
}
add_action( 'wp_enqueue_scripts', 'fpgm_enqueue_assets' );

/**
 * [geep_maps] — image column + accordion column, mirroring the original
 * "texto mapa" Divi row (columns 14/24 and 2/5, 2% gap).
 */
function fpgm_shortcode() {
	$maps = get_posts(
		array(
			'post_type'        => FPGM_CPT,
			'posts_per_page'   => -1,
			'orderby'          => array(
				'menu_order' => 'ASC',
				'date'       => 'ASC',
			),
			'order'            => 'ASC',
			'suppress_filters' => false, // Let WPML return the current language.
		)
	);

	if ( empty( $maps ) ) {
		return '';
	}

	// Map images are language-independent: when a translation has no image of
	// its own, fall back to the original post's image (e.g. Arabic maps show
	// the image assigned to the English one). Setting an image on the
	// translation still overrides this.
	$get_thumb = function ( $post_id ) {
		$thumb = get_post_thumbnail_id( $post_id );
		if ( ! $thumb ) {
			$original = apply_filters( 'wpml_original_element_id', null, $post_id, 'post_' . FPGM_CPT );
			if ( $original && (int) $original !== (int) $post_id ) {
				$thumb = get_post_thumbnail_id( (int) $original );
			}
		}
		return $thumb;
	};

	// The first map starts open, so its image (if it has one) is the one
	// visible on load. Maps without an image simply leave the gap empty.
	$first_thumb = $get_thumb( $maps[0]->ID );
	$active_key  = $first_thumb ? (string) $first_thumb : '';

	// One image per map that has one. The visible size tops out around 660px
	// (58% of the 90%-wide row), so tell the browser it never needs the
	// full-size file: with `sizes` it picks the smallest sufficient variant.
	$sizes = '(max-width: 767px) 100vw, 50vw';

	$images_html   = '';
	$toggles_html  = '';
	$first         = true;
	$rendered_keys = array();
	foreach ( $maps as $map ) {
		$thumb_id = $get_thumb( $map->ID );
		$map_key  = '';

		if ( $thumb_id ) {
			$map_key = (string) $thumb_id;
			if ( ! in_array( $map_key, $rendered_keys, true ) ) {
				$rendered_keys[] = $map_key;
				$images_html    .= wp_get_attachment_image(
					$thumb_id,
					'full',
					false,
					array(
						'class'    => 'geep-map-img' . ( $map_key === $active_key ? ' is-active is-shown' : '' ),
						'data-map' => $map_key,
						'loading'  => 'lazy',
						'sizes'    => $sizes,
					)
				);
			}
		}

		$toggles_html .= sprintf(
			'<div class="geep-toggle %s%s" data-map="%s" data-slug="%s">' .
				'<h4 class="geep-toggle-title">%s</h4>' .
				'<div class="geep-toggle-content">%s</div>' .
			'</div>',
			$first ? 'geep-toggle--open' : 'geep-toggle--close',
			$first ? ' geep-toggle--first' : '',
			esc_attr( $map_key ),
			esc_attr( urldecode( $map->post_name ) ), // Readable form (Arabic slugs are stored percent-encoded).
			esc_html( get_the_title( $map ) ),
			wp_kses_post( wpautop( $map->post_content ) )
		);
		$first = false;
	}

	// UI labels for the lightbox, in the language of the current page.
	$is_ar  = 'ar' === apply_filters( 'wpml_current_language', null );
	$labels = array(
		'copy'   => $is_ar ? 'نسخ رابط الخريطة' : 'Copy map URL',
		'copied' => $is_ar ? 'تم نسخ الرابط' : 'Link copied!',
		'close'  => $is_ar ? 'إغلاق' : 'Close',
		'zoom'   => $is_ar ? 'عرض الخريطة بحجم أكبر' : 'View map larger',
	);

	return '<div class="geep-maps" data-labels="' . esc_attr( wp_json_encode( $labels ) ) . '">' .
			'<div class="geep-maps-col-map"><div class="geep-maps-image"><span class="geep-maps-image-wrap" role="button" tabindex="0" aria-label="' . esc_attr( $labels['zoom'] ) . '">' . $images_html . '</span></div></div>' .
			'<div class="geep-maps-col-toggles">' . $toggles_html . '</div>' .
		'</div>';
}
add_shortcode( 'geep_maps', 'fpgm_shortcode' );

/* -------------------------------------------------------------------------
 * Admin: list-table columns and default-image setting.
 * ---------------------------------------------------------------------- */

/**
 * Add image + order columns to the Maps list table.
 *
 * @param array $columns Existing columns.
 * @return array
 */
function fpgm_admin_columns( $columns ) {
	$new = array();
	foreach ( $columns as $key => $label ) {
		if ( 'title' === $key ) {
			$new['fpgm_image'] = __( 'Map image', 'fp-genocide-maps' );
		}
		$new[ $key ] = $label;
	}
	$new['fpgm_order'] = __( 'Order', 'fp-genocide-maps' );
	return $new;
}
add_filter( 'manage_' . FPGM_CPT . '_posts_columns', 'fpgm_admin_columns' );

/**
 * Render the custom columns.
 *
 * @param string $column  Column key.
 * @param int    $post_id Post ID.
 */
function fpgm_admin_columns_content( $column, $post_id ) {
	if ( 'fpgm_image' === $column ) {
		if ( has_post_thumbnail( $post_id ) ) {
			echo get_the_post_thumbnail( $post_id, array( 80, 60 ), array( 'style' => 'border-radius:4px;height:auto;' ) );
		} else {
			echo '<span style="color:#a00;">' . esc_html__( 'No image', 'fp-genocide-maps' ) . '</span>';
		}
	} elseif ( 'fpgm_order' === $column ) {
		echo (int) get_post_field( 'menu_order', $post_id );
	}
}
add_action( 'manage_' . FPGM_CPT . '_posts_custom_column', 'fpgm_admin_columns_content', 10, 2 );

/**
 * Order the admin list by menu_order, like the front end.
 *
 * @param WP_Query $query Current query.
 */
function fpgm_admin_order( $query ) {
	if ( is_admin() && $query->is_main_query() && FPGM_CPT === $query->get( 'post_type' ) && ! $query->get( 'orderby' ) ) {
		$query->set( 'orderby', 'menu_order' );
		$query->set( 'order', 'ASC' );
	}
}
add_action( 'pre_get_posts', 'fpgm_admin_order' );

/* -------------------------------------------------------------------------
 * Activation: seed the current 8 maps (EN + AR, linked in WPML).
 * ---------------------------------------------------------------------- */

/**
 * Create the initial maps from the content that used to live in the Divi
 * toggles, once, on first activation.
 */
function fpgm_activate() {
	fpgm_register_cpt();

	// Register the CPT as translatable in WPML *before* seeding, otherwise
	// wpml_set_element_language_details silently ignores the posts and the
	// AR/EN pairs never get linked. Mode 2 = translatable, display the
	// original when no translation exists (same as wpml-config.xml).
	global $sitepress;
	if ( $sitepress && method_exists( $sitepress, 'get_setting' ) ) {
		$sync              = (array) $sitepress->get_setting( 'custom_posts_sync_option', array() );
		$sync[ FPGM_CPT ]  = 2;
		$sitepress->set_setting( 'custom_posts_sync_option', $sync, true );
	}

	$existing = get_posts(
		array(
			'post_type'        => FPGM_CPT,
			'posts_per_page'   => 1,
			'post_status'      => 'any',
			'suppress_filters' => true,
		)
	);
	if ( ! empty( $existing ) ) {
		return; // Already seeded.
	}

	$file = __DIR__ . '/includes/seed-data.json';
	if ( ! file_exists( $file ) ) {
		return;
	}
	$data = json_decode( file_get_contents( $file ), true );
	if ( empty( $data['en'] ) ) {
		return;
	}

	$has_wpml = has_filter( 'wpml_element_trid' );

	foreach ( $data['en'] as $i => $item ) {
		$en_id = wp_insert_post(
			array(
				'post_type'    => FPGM_CPT,
				'post_status'  => 'publish',
				'post_title'   => wp_strip_all_tags( $item['title'] ),
				'post_content' => $item['content'],
				'menu_order'   => $i + 1,
			)
		);
		if ( ! $en_id || is_wp_error( $en_id ) ) {
			continue;
		}

		if ( $has_wpml ) {
			$trid = apply_filters( 'wpml_element_trid', null, $en_id, 'post_' . FPGM_CPT );
			do_action(
				'wpml_set_element_language_details',
				array(
					'element_id'           => $en_id,
					'element_type'         => 'post_' . FPGM_CPT,
					'trid'                 => $trid,
					'language_code'        => 'en',
					'source_language_code' => null,
				)
			);

			// Arabic counterpart (same position in the list).
			if ( ! empty( $data['ar'][ $i ]['title'] ) ) {
				$ar_id = wp_insert_post(
					array(
						'post_type'    => FPGM_CPT,
						'post_status'  => 'publish',
						'post_title'   => wp_strip_all_tags( $data['ar'][ $i ]['title'] ),
						'post_content' => $data['ar'][ $i ]['content'],
						'menu_order'   => $i + 1,
					)
				);
				if ( $ar_id && ! is_wp_error( $ar_id ) ) {
					do_action(
						'wpml_set_element_language_details',
						array(
							'element_id'           => $ar_id,
							'element_type'         => 'post_' . FPGM_CPT,
							'trid'                 => $trid,
							'language_code'        => 'ar',
							'source_language_code' => 'en',
						)
					);
				}
			}
		}
	}
}
register_activation_hook( __FILE__, 'fpgm_activate' );