/* ======================================================
 * EDUNEWS HOME ENGINE FINAL
 *
 * Elementor Compatible
 * ACF Compatible
 * WPML Compatible
 * Cache Elementor
 * Global Exclusions
 * Home Posts Mix
 * Preview Compatible
 * ====================================================== */

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

function edunews_get_acf_field($field_name) {
    $post_id = get_the_ID();

    if (!$post_id) {
        global $post;

        if ($post instanceof WP_Post) {
            $post_id = $post->ID;
        }
    }

    if (!$post_id) {
        return null;
    }

    $candidate_ids = [];

    if (is_preview()) {
        $autosave = wp_get_post_autosave($post_id);

        if ($autosave instanceof WP_Post) {
            $candidate_ids[] = $autosave->ID;
        }

        $preview_id = (int) get_query_var('preview_id');

        if ($preview_id) {
            $candidate_ids[] = $preview_id;
        }
    }

    $candidate_ids[] = $post_id;
    $candidate_ids = array_values(array_unique(array_filter($candidate_ids)));

    foreach ($candidate_ids as $candidate_id) {
        if (function_exists('get_field')) {
            $value = get_field($field_name, $candidate_id);

            if (!empty($value)) {
                return $value;
            }
        }

        $meta = get_post_meta($candidate_id, $field_name, true);

        if (!empty($meta)) {
            return $meta;
        }
    }

    return null;
}

/* ======================================================
 * HELPERS
 * ====================================================== */

function edunews_get_valid_post($value) {
    if (!$value) return null;

    if (is_array($value)) {
        $value = $value[0] ?? $value;
    }

    if (is_object($value) && isset($value->ID)) {
        return $value;
    }

    if (is_numeric($value)) {
        if (function_exists('apply_filters')) {
            $translated_id = apply_filters(
                'wpml_object_id',
                $value,
                get_post_type($value),
                true
            );

            if ($translated_id) {
                $value = $translated_id;
            }
        }

        return get_post($value);
    }

    return null;
}

/* ======================================================
 * CACHE RENDER ELEMENTOR
 * ====================================================== */

function edunews_render_post_template($post_obj, $template_id) {
    $post_obj = edunews_get_valid_post($post_obj);

    if (!$post_obj || !$template_id) {
        return '';
    }

    global $post;

    $post_backup = $post;

    $post = $post_obj;

    setup_postdata($post);

    ob_start();

    echo \Elementor\Plugin::instance()
        ->frontend
        ->get_builder_content_for_display(
            $template_id,
            true
        );

    $html = ob_get_clean();

    wp_reset_postdata();

    $post = $post_backup;

    return $html;
}

/* ======================================================
 * AUTHOR RENDER
 * ====================================================== */

function edunews_render_author_template($author_field, $template_id = 27588) {
    if (!function_exists('get_field')) {
        return '';
    }

    $author = edunews_get_acf_field($author_field);

    if (!$author) return '';

    if (is_array($author) && isset($author['ID'])) {
        $author_id = (int) $author['ID'];
    } elseif (is_object($author) && isset($author->ID)) {
        $author_id = (int) $author->ID;
    } else {
        $author_id = (int) $author;
    }

    if (!$author_id) return '';

    $cache_key = 'edunews_author_' . $author_id . '_' . $template_id;

    $cached = get_transient($cache_key);

    if ($cached !== false) {
        return $cached;
    }

    global $post;

    $post_backup = $post;

    $post = new stdClass();

    $post->ID = 999999;
    $post->post_author = $author_id;
    $post->post_type = 'post';
    $post->post_status = 'publish';

    setup_postdata($post);

    ob_start();

    echo \Elementor\Plugin::instance()
        ->frontend
        ->get_builder_content_for_display(
            $template_id,
            true
        );

    $html = ob_get_clean();

    wp_reset_postdata();

    $post = $post_backup;

    set_transient(
        $cache_key,
        $html,
        HOUR_IN_SECONDS
    );

    return $html;
}

/* ======================================================
 * HOME MAP
 * ====================================================== */

function edunews_home_map() {
    return [
        'post_destacado' => [
            'field' => 'featured_post_a',
            'template' => 27598
        ],

        'post_destacado_b' => [
            'field' => 'featured_post_b',
            'template' => 27583
        ],

        'post_destacado_c' => [
            'field' => 'featured_post_c',
            'template' => 27583
        ],

        'post_destacado_event' => [
            'field' => 'featured_event',
            'template' => 27616
        ],

        'post_destacado_d' => [
            'field' => 'featured_post_d',
            'template' => 27580
        ],

        'post_destacado_e' => [
            'field' => 'featured_post_e',
            'template' => 27622
        ],

        'post_destacado_f' => [
            'field' => 'featured_post_f',
            'template' => 27619
        ],

        'post_destacado_g' => [
            'field' => 'featured_post_g',
            'template' => 27622
        ],

        'post_destacado_h' => [
            'field' => 'featured_post_h',
            'template' => 27622
        ],

        'post_destacado_i' => [
            'field' => 'featured_post_i',
            'template' => 27622
        ],

        'post_destacado_j' => [
            'field' => 'featured_post_j',
            'template' => 27619
        ],

        'post_destacado_k' => [
            'field' => 'featured_post_k',
            'template' => 27619
        ],

        'featured_video_a' => [
            'field' => 'featured_video_a',
            'template' => 27596
        ],

        'featured_video_b' => [
            'field' => 'featured_video_b',
            'template' => 27596
        ],

        'featured_video_c' => [
            'field' => 'featured_video_c',
            'template' => 27601
        ],

        'featured_video_d' => [
            'field' => 'featured_video_d',
            'template' => 27601
        ],

        'featured_video_e' => [
            'field' => 'featured_video_e',
            'template' => 27601
        ],

        'featured_video_f' => [
            'field' => 'featured_video_f',
            'template' => 27601
        ],

        'featured_read_a' => [
            'field' => 'featured_read_a',
            'template' => 27593
        ],

        'featured_read_b' => [
            'field' => 'featured_read_b',
            'template' => 27593
        ],
    ];
}

/* ======================================================
 * GENERAR SHORTCODES
 * ====================================================== */

add_action('init', function() {
    $map = edunews_home_map();

    foreach ($map as $shortcode => $config) {
        add_shortcode($shortcode, function() use ($config) {
            $post_obj = edunews_get_valid_post(
                edunews_get_acf_field($config['field'])
            );

            if (!$post_obj) {
                return '';
            }

            $template_id = $config['template'];

            if ($config['field'] === 'featured_post_d') {
                $post_type = get_post_type($post_obj->ID);

                if ($post_type === 'edu-bits') {
                    $template_id = 27580;
                } else {
                    $template_id = 27583;
                }
            }

            return edunews_render_post_template(
                $post_obj,
                $template_id
            );
        });
    }
});

/* ======================================================
 * AUTHORS
 * ====================================================== */

add_action('init', function() {
    $authors = [
        'author_a',
        'author_b',
        'author_c',
        'author_d',
        'author_e',
        'author_f',
        'author_g',
        'author_h'
    ];

    foreach ($authors as $author_field) {
        add_shortcode($author_field, function() use ($author_field) {
            return edunews_render_author_template(
                $author_field,
                27588
            );
        });
    }
});

/* ======================================================
 * EXCLUSIONES
 * ====================================================== */

function edunews_get_excluded_ids() {
    $exclude = [];

    $map = edunews_home_map();

    foreach ($map as $config) {
        $post_obj = edunews_get_valid_post(
            edunews_get_acf_field($config['field'])
        );

        if ($post_obj && isset($post_obj->ID)) {
            $exclude[] = $post_obj->ID;
        }
    }

    return array_unique($exclude);
}

/* ======================================================
 * RECENT POSTS
 * ====================================================== */

function edunews_recent_posts_template($atts = []) {
    $atts = shortcode_atts([
        'posts' => 5,
        'template' => 27590
    ], $atts);

    $exclude = edunews_get_excluded_ids();

    $query = new WP_Query([
        'post_type' => [
            'post',
            'editorial',
            'events',
            'edu-reads',
            'edu-media',
            'edu-bits'
        ],
        'posts_per_page' => intval($atts['posts']),
        'post_status' => 'publish',
        'post__not_in' => $exclude,
        'ignore_sticky_posts' => true
    ]);

    if (!$query->have_posts()) {
        return '';
    }

    global $post;

    $post_backup = $post;

    ob_start();

    while ($query->have_posts()) {
        $query->the_post();

        echo \Elementor\Plugin::instance()
            ->frontend
            ->get_builder_content_for_display(
                intval($atts['template']),
                true
            );
    }

    wp_reset_postdata();

    $post = $post_backup;

    return ob_get_clean();
}

add_shortcode('recent_posts_template', 'edunews_recent_posts_template');

/* ======================================================
 * HOME POSTS MIX
 *
 * 5 posts recientes
 * 5 edu-bits populares
 * ====================================================== */

function mostrar_home_posts_mix() {
    if (!class_exists('\Elementor\Plugin')) {
        return '';
    }

    $template_id = 27586;

    global $post;

    $post_backup = $post;

    $exclude = edunews_get_excluded_ids();

    ob_start();

    $recent_posts = new WP_Query([
        'post_type' => 'post',
        'posts_per_page' => 5,
        'post_status' => 'publish',
        'post__not_in' => $exclude,
        'ignore_sticky_posts' => true,
        'no_found_rows' => true
    ]);

    if ($recent_posts->have_posts()) {
        while ($recent_posts->have_posts()) {
            $recent_posts->the_post();

            $post = get_post(get_the_ID());

            setup_postdata($post);

            echo \Elementor\Plugin::instance()
                ->frontend
                ->get_builder_content_for_display(
                    $template_id,
                    true
                );
        }
    }

    wp_reset_postdata();

    $popular_bits = new WP_Query([
        'post_type' => 'edu-bits',
        'posts_per_page' => 5,
        'post_status' => 'publish',
        'post__not_in' => $exclude,
        'meta_key' => '_liked',
        'orderby' => 'meta_value_num',
        'order' => 'DESC',
        'ignore_sticky_posts' => true,
        'no_found_rows' => true
    ]);

    if ($popular_bits->have_posts()) {
        while ($popular_bits->have_posts()) {
            $popular_bits->the_post();

            $post = get_post(get_the_ID());

            setup_postdata($post);

            echo \Elementor\Plugin::instance()
                ->frontend
                ->get_builder_content_for_display(
                    $template_id,
                    true
                );
        }
    }

    wp_reset_postdata();

    $post = $post_backup;

    return ob_get_clean();
}

add_shortcode('home_posts_mix', 'mostrar_home_posts_mix');