<?php

namespace AcademicCrew\Blocks;

use AcademicCrew\Core\Loader;

/**
 * Gutenberg block: academiccrew/publications
 *
 * Server-side rendered. Wraps [academiccrew_publications_list] shortcode.
 * The block category 'academiccrew' is also registered here.
 */
class PublicationsBlock {

    public function register( Loader $loader ): void {
        $loader->add_action( 'init',                 $this, 'register_block'    );
        $loader->add_filter( 'block_categories_all', $this, 'add_block_category', 10, 2 );
    }

    public function register_block(): void {
        if ( ! function_exists( 'register_block_type' ) ) {
            return;
        }

        // Register a script handle with no file src so we can attach inline JS.
        wp_register_script(
            'acc-block-publications',
            false,
            [ 'wp-blocks', 'wp-element', 'wp-server-side-render', 'wp-block-editor', 'wp-components', 'wp-i18n' ],
            ACADEMICCREW_VERSION,
            true
        );
        wp_add_inline_script( 'acc-block-publications', $this->editor_script() );

        register_block_type( 'academiccrew/publications', [
            'api_version'     => 2,
            'title'           => __( 'AcademicCrew: Publications', 'academiccrew' ),
            'description'     => __( 'Publications list for a research group member.', 'academiccrew' ),
            'category'        => 'academiccrew',
            'icon'            => 'book-alt',
            'supports'        => [ 'html' => false, 'align' => [ 'wide', 'full' ] ],
            'attributes'      => [
                'member_id' => [ 'type' => 'string',  'default' => '' ],
                'per_page'  => [ 'type' => 'integer', 'default' => 10 ],
                'type'      => [ 'type' => 'string',  'default' => '' ],
                'year'      => [ 'type' => 'string',  'default' => '' ],
            ],
            'render_callback' => [ $this, 'render_block' ],
            'editor_script'   => 'acc-block-publications',
        ] );
    }

    public function render_block( array $atts ): string {
        return do_shortcode( sprintf(
            '[academiccrew_publications_list member_id="%s" per_page="%d" type="%s" year="%s"]',
            esc_attr( $atts['member_id'] ?? '' ),
            (int) ( $atts['per_page']  ?? 10 ),
            esc_attr( $atts['type']     ?? '' ),
            esc_attr( $atts['year']     ?? '' )
        ) );
    }

    /**
     * Add the 'academiccrew' category once; guard against duplicates.
     */
    public function add_block_category( array $categories ): array {
        foreach ( $categories as $cat ) {
            if ( $cat['slug'] === 'academiccrew' ) {
                return $categories;
            }
        }
        array_unshift( $categories, [
            'slug'  => 'academiccrew',
            'title' => 'AcademicCrew',
            'icon'  => null,
        ] );
        return $categories;
    }

    private function editor_script(): string {
        return <<<'JS'
(function(blocks, el, SSR, blockEditor, components, i18n) {
    var __ = i18n.__;
    var InspectorControls = blockEditor.InspectorControls;
    var PanelBody         = components.PanelBody;
    var TextControl       = components.TextControl;
    var RangeControl      = components.RangeControl;
    var SelectControl     = components.SelectControl;

    blocks.registerBlockType('academiccrew/publications', {
        edit: function(props) {
            var attrs = props.attributes;
            var setA  = props.setAttributes;
            return [
                el(InspectorControls, { key: 'controls' },
                    el(PanelBody, { title: __('Publications settings', 'academiccrew'), initialOpen: true },
                        el(TextControl, {
                            label: __('Member ID (leave blank for page member)', 'academiccrew'),
                            value: attrs.member_id,
                            onChange: function(v) { setA({ member_id: v }); }
                        }),
                        el(RangeControl, {
                            label: __('Items per page', 'academiccrew'),
                            value: attrs.per_page,
                            min: 1, max: 100,
                            onChange: function(v) { setA({ per_page: v }); }
                        }),
                        el(SelectControl, {
                            label: __('Type', 'academiccrew'),
                            value: attrs.type,
                            options: [
                                { label: __('All', 'academiccrew'),             value: '' },
                                { label: 'Journal article',                   value: 'journal-article' },
                                { label: 'Conference paper',                  value: 'conference-paper' },
                                { label: 'Book chapter',                      value: 'book-chapter' },
                                { label: 'Preprint',                          value: 'preprint' },
                                { label: 'Book',                              value: 'book' },
                                { label: 'Thesis',                            value: 'thesis' }
                            ],
                            onChange: function(v) { setA({ type: v }); }
                        }),
                        el(TextControl, {
                            label: __('Year (e.g. 2023 or 2020-2024)', 'academiccrew'),
                            value: attrs.year,
                            onChange: function(v) { setA({ year: v }); }
                        })
                    )
                ),
                el(SSR, { key: 'preview', block: 'academiccrew/publications', attributes: attrs })
            ];
        },
        save: function() { return null; }
    });
}(wp.blocks, wp.element.createElement, wp.serverSideRender, wp.blockEditor, wp.components, wp.i18n));
JS;
    }
}