<?php
/**
 * Plugin Name: AJ FAQ Block
 * Plugin URI: https://wordpress.org/plugins/aj-faq-block/
 * Description: The AJ FAQ Block plugin allows users to create a unlimited FAQ block in WordPress.
 * Version: 1.0.1
 * Requires at least: 5.0
 * Requires PHP: 7.4
 * Author: Jahid Shah
 * Author URI: https://jahidshah.com/
 * License: GPL v2 or later
 * License URI: https://www.gnu.org/licenses/gpl-2.0.html
 * Text Domain: aj-faq-block
 */

if ( ! defined( 'ABSPATH' ) ) exit;

// Load plugin header version
$aj_faq_block_data = get_file_data(__FILE__, [
    'Version' => 'Version'
]);

if ( ! defined( 'AJFAQBLOCK_VERSION' ) ) {
    define( 'AJFAQBLOCK_VERSION', $aj_faq_block_data['Version'] );
}

// Admin CSS
add_action('admin_enqueue_scripts', function () {
    wp_enqueue_style(
        'ajfaqbl-admin-style',
        plugins_url('css/ajfaqbl-admin-style.css', __FILE__),
        [],
        AJFAQBLOCK_VERSION
    );
});

// Frontend CSS
add_action('wp_enqueue_scripts', function () {
    wp_enqueue_style(
        'ajfaqblock-style',
        plugins_url('css/aj-faq-block-style.css', __FILE__),
        [],
        AJFAQBLOCK_VERSION
    );
});

// Frontend JS
add_action('wp_enqueue_scripts', function () {
    wp_enqueue_script(
        'ajfaqblock-plugin',
        plugins_url('js/aj-faq-block-plugin.js', __FILE__),
        [],
        AJFAQBLOCK_VERSION,
        true
    );
});

// Function for Admin Menu
function ajfaqblock_add_admin_menu() {
    add_menu_page(
        __('AJFAQ Block', 'aj-faq-block'),
        __('AJFAQ Block', 'aj-faq-block'),
        'manage_options',
        'ajfabl-main-menu',
        'ajfabl_documentation_page_callback', // Correct callback here
        'dashicons-editor-help',
        20
    );

    // Documentation submenu under AJFAQ Block
    add_submenu_page(
        'ajfabl-main-menu',
        __('Documentation', 'aj-faq-block'),
        __('Documentation', 'aj-faq-block'),
        'manage_options',
        'ajfabl-documentation',
        'ajfabl_documentation_page_callback'
    );

}
add_action('admin_menu', 'ajfaqblock_add_admin_menu');


    // Register FAQ Group Post Type
    function ajfaqblock_register_faq_group_cpt() {
        register_post_type('ajfabl_group', array(
            'labels' => array(
                'name' => __('FAQ Groups', 'aj-faq-block'),
                'singular_name' => __('FAQ Group', 'aj-faq-block'),
                'add_new' => __('Add New Group', 'aj-faq-block'),
                'add_new_item' => __('Add a Group Name', 'aj-faq-block'), // <- This is what changes the text above the input
                'edit_item' => __('Edit FAQ Group', 'aj-faq-block'),
                'new_item' => __('New FAQ Group', 'aj-faq-block'),
                'view_item' => __('View FAQ Group', 'aj-faq-block'),
                'search_items' => __('Search FAQ Groups', 'aj-faq-block'),
                'not_found' => __('No FAQ Groups found', 'aj-faq-block'),
                'not_found_in_trash' => __('No FAQ Groups found in Trash', 'aj-faq-block'),
            ),
            'public' => true,
            'has_archive' => true,
            'supports' => array('title'),
            'menu_icon' => 'dashicons-editor-help',
            'show_in_menu' => 'ajfabl-main-menu', // Nests under AJFAQ Block
        ));
    }
    add_action('init', 'ajfaqblock_register_faq_group_cpt');

    // Register FAQ Questions CPT
    function ajfaqblock_register_question_cpt() {
        register_post_type('ajfabl_question', array(
            'labels' => array(
                'name' => __('FAQ Questions', 'aj-faq-block'),
                'singular_name' => __('FAQ Question', 'aj-faq-block'),
                'add_new' => __('Add New Question', 'aj-faq-block'),
                'add_new_item' => __('Add a Question', 'aj-faq-block'),
                'edit_item' => __('Edit Question', 'aj-faq-block'),
                'new_item' => __('New Question', 'aj-faq-block'),
                'view_item' => __('View Question', 'aj-faq-block'),
                'search_items' => __('Search Question', 'aj-faq-block'),
                'not_found' => __('No Question', 'aj-faq-block'),
                'not_found_in_trash' => __('No Question found in Trash', 'aj-faq-block'),
            ),
            'public' => true,
            'has_archive' => false,
            'supports' => array('title', 'editor'),
            'menu_icon' => 'dashicons-format-status',
            'show_in_menu' => 'ajfabl-main-menu', // Nests under AJFAQ Block
        ));
    }
    add_action('init', 'ajfaqblock_register_question_cpt');

    // Add Custom Meta Box for FAQ Block
    function ajfaqblock_add_question_meta_box() {
        add_meta_box(
            'ajfabl_question_group',
            __('Assign to FAQ Group', 'aj-faq-block'),
            'ajfaqblock_question_group_meta_callback',
            'ajfabl_question',
            'side'
        );
    }
    add_action('add_meta_boxes', 'ajfaqblock_add_question_meta_box');

    function ajfaqblock_question_group_meta_callback($post) {
        $selected = get_post_meta($post->ID, 'faq_group_id', true);
        $groups = get_posts(array('post_type' => 'ajfabl_group', 'numberposts' => -1));

        echo '<select name="faq_group_id">';
        foreach ($groups as $group) {
            echo '<option value="' . esc_attr($group->ID) . '" ' . selected($selected, $group->ID, false) . '>' . esc_html($group->post_title) . '</option>';
        }
        echo '</select>';
        wp_nonce_field('ajfabl_group_meta_save', 'ajfabl_group_meta_nonce');
    }

    // Save Meta Box Data
    function ajfaqblock_save_question_group_meta($post_id) {
        if (
            ! isset($_POST['ajfabl_group_meta_nonce']) || 
            ! wp_verify_nonce(sanitize_text_field(wp_unslash($_POST['ajfabl_group_meta_nonce'])), 'ajfabl_group_meta_save')
        ) {
            return;
        }
    
        if (defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) return;
        if (!current_user_can('edit_post', $post_id)) return;
    
        if (isset($_POST['faq_group_id'])) {
            $faq_group_id = sanitize_text_field(wp_unslash($_POST['faq_group_id']));
            update_post_meta($post_id, 'faq_group_id', $faq_group_id);
        }
    }
    add_action('save_post', 'ajfaqblock_save_question_group_meta');
    
    // Shortcode to Display FAQs
    function ajfaqblock_display_group_faqs($atts) {
        $atts = shortcode_atts(array(
            'id' => 0,
        ), $atts, 'aj-faq');

        $group_id = intval($atts['id']);
        if (!$group_id) {
            return esc_html__('Invalid FAQ Group ID.', 'aj-faq-block');
        }

        $args = array(
            'post_type'      => 'ajfabl_question',
            'posts_per_page' => -1,
            'meta_query'     => array(
                array(
                    'key'     => 'faq_group_id',
                    'value'   => $group_id,
                    'compare' => '='
                )
            ),
            'orderby'        => 'date',
            'order'          => 'ASC',
        );            

        $query = new WP_Query($args);

        $output = '<div class="faq-body"><div class="faq-container">';

        if ($query->have_posts()) {
            while ($query->have_posts()) {
                $query->the_post();
                $output .= '<div class="faq-item">';
                $output .= '<div class="faq-question">' . esc_html(get_the_title()) . '</div>';
                $output .= '<div class="faq-answer">' . wp_kses_post(get_the_content()) . '</div>';
                $output .= '</div>';
            }
            wp_reset_postdata();
        } else {
            $output .= '<p>' . esc_html__('No FAQs found in this group.', 'aj-faq-block') . '</p>';
        }

        $output .= '</div></div>';

        return $output;
    }
    add_shortcode('aj-faq', 'ajfaqblock_display_group_faqs');

    // Add Shortcode Column to FAQ Group Admin
    function ajfaqblock_add_shortcode_column($columns) {
        $columns['shortcode'] = esc_html__('Shortcode', 'aj-faq-block');
        return $columns;
    }
    add_filter('manage_ajfabl_group_posts_columns', 'ajfaqblock_add_shortcode_column');

    function ajfaqblock_display_shortcode_column($column, $post_id) {
        if ('shortcode' === $column) {
            echo '<code>' . esc_html('[aj-faq id="' . intval($post_id) . '"]') . '</code>';
        }
    }
    add_action('manage_ajfabl_group_posts_custom_column', 'ajfaqblock_display_shortcode_column', 10, 2);


	//Documentation Function
 
	
	// Documentation Callback
    function ajfabl_documentation_page_callback() {
        ?>
            <div class="ajfaqbl-wrap">
            <div class="ajfaqbl-row">
                <h2><?php echo esc_html__('Documentation', 'aj-faq-block'); ?></h2>
            </div>
            <div class="ajfaqbl-row">
                <div class="col-ajfaqbl-paragraph ajfaqbl_common">
                    <p><?php echo esc_html__('This plugin allows you to create an FAQ Block to professionally display your visitors\' Frequently Asked Questions. You can easily manage FAQ content, customize colors, and display it using shortcodes. The plugin is lightweight, supports Elementor, and is optimized for performance.', 'aj-faq-block'); ?></p>

                    <h2><?php esc_html_e('How to Create an FAQ Block', 'aj-faq-block'); ?></h2>
                    <ol>
                        <li><?php echo wp_kses_post(__('Navigate to <strong>AJFAQ Block > FAQ Groups</strong> in your WordPress Admin Dashboard.', 'aj-faq-block')); ?></li>
                        <li><?php echo wp_kses_post(__('Click on <strong>Add New</strong> then enter a Group Name (e.g., Site FAQ, General FAQ).', 'aj-faq-block')); ?></li>
                        <li><?php esc_html_e('Inside each group, add as many questions and answers as you like.', 'aj-faq-block'); ?></li>
                        <li><?php echo wp_kses_post(__('Each FAQ Group generates a unique shortcode (e.g.<strong>[aj-faq id="123"]</strong>).', 'aj-faq-block')); ?></li>
                        <li><?php esc_html_e('Copy and paste the shortcode into any post, page, or widget area to display the FAQ block.', 'aj-faq-block'); ?></li>
                        <li><?php esc_html_e('You can also use the Elementor widget to visually insert the FAQ block.', 'aj-faq-block'); ?></li>
                    </ol>

                    <h2><?php esc_html_e('Using Shortcodes', 'aj-faq-block'); ?></h2>
                    <p><?php esc_html_e('1. Use the shortcode [aj-faq id="your_faq_group_id"] wherever you\'d like to display your FAQ Block.', 'aj-faq-block'); ?></p>
                    <p><?php esc_html_e('2. This shortcode works perfectly in posts, pages, and even widgets.', 'aj-faq-block'); ?></p>

                    <h2><?php esc_html_e('FAQ Block Customization', 'aj-faq-block'); ?></h2>
                    <p><?php echo wp_kses_post(__('You can customize your FAQ Block according to your branding preferences. Navigate to <strong>Appearance > Customize > AJFAQ Block Settings</strong>.', 'aj-faq-block')); ?></p>
                    <br>
                    <strong><?php esc_html_e('Customization Features Include:', 'aj-faq-block'); ?></strong>
                    <ul>
                        <li><?php esc_html_e('FAQ Block background color.', 'aj-faq-block'); ?></li>
                        <li><?php esc_html_e('Text color and typography.', 'aj-faq-block'); ?></li>
                        <li><?php esc_html_e('Text background color.', 'aj-faq-block'); ?></li>
                        <li><?php esc_html_e('FAQ hover color.', 'aj-faq-block'); ?></li>
                    </ul>

                    <h2><?php esc_html_e('Key Features:', 'aj-faq-block'); ?></h2>
                    <ul>
                        <li><?php esc_html_e('Create unlimited FAQ Blocks', 'aj-faq-block'); ?></li>
                        <li><?php esc_html_e('Organize FAQs into custom Groups', 'aj-faq-block'); ?></li>
                        <li><?php esc_html_e('Display FAQs using Shortcodes', 'aj-faq-block'); ?></li>
                        <li><?php esc_html_e('Elementor support', 'aj-faq-block'); ?></li>
                        <li><?php esc_html_e('Fully responsive and mobile-friendly', 'aj-faq-block'); ?></li>
                        <li><?php esc_html_e('Lightweight and optimized for performance', 'aj-faq-block'); ?></li>
                        <li><?php esc_html_e('Unlimited color customization', 'aj-faq-block'); ?></li>
                        <li><?php esc_html_e('Easy to install and configure', 'aj-faq-block'); ?></li>
                    </ul>
                    <h2><?php esc_html_e('Support & Contact', 'aj-faq-block'); ?></h2>
                    <p><?php esc_html_e('Watch the Video Tutorial or Contact Us for support.', 'aj-faq-block'); ?></p>

                </div>
                <div class="col-ajfaqbl_sidebar_area ajfaqbl_common">
                    <h3 id="title">About Author</h3>
                    <?php $author_image_url = plugins_url( 'img/author.png', __FILE__ ); if ( file_exists( plugin_dir_path( __FILE__ ) . 'img/author.png' ) ) { echo '<p><img class="auth-img" src="' . esc_url( $author_image_url ) . '" alt="Jahid Shah"></p>';}?>
                    <p>I'm <strong><a href="https://jahidshah.com/" target="_blank">Jahid Shah</a></strong>, a front-end developer with specialized skills in WordPress theme development and WordPress Security Expert, who passionate about creating error-free, secure websites and achieving 100% client satisfaction. I have a drive for learning and sharing knowledge as widely as possible. Solving real-world problems is my passion.</p>
                    <br>
                    <?php
                    $buyme_image_url = plugins_url( 'img/buyme.png', __FILE__ );

                    if ( file_exists( plugin_dir_path( __FILE__ ) . 'img/buyme.png' ) ) {
                        echo '<p><a href="https://www.buymeacoffee.com/jahidshah" target="_blank"><img src="' . esc_url( $buyme_image_url ) . '" alt=""></a></p>';
                    }
                    ?>
                    <h5 id="title">Watch Help Video</h5>
                    <p><a href="" target="_blank" class="btn">Watch On YouTube</a></p>
                </div>
            </div>

        <?php
    }

    // Register Customizer Settings for AJFAQ Block
    function ajfaqblock_customize_register($wp_customize) {

        // Section
        $wp_customize->add_section('ajfaqblock_settings', array(
            'title'    => esc_html__('AJFAQ Block Customization', 'aj-faq-block'),
            'priority' => 30,
        ));

        // Translatable labels array
        $labels = [
            'block_bg_color'       => esc_html__('Block Background Color', 'aj-faq-block'),
            'qblock_bg_color'      => esc_html__('Question Block Background Color', 'aj-faq-block'),
            'qhblock_bg_color'     => esc_html__('Question Block Hover Background Color', 'aj-faq-block'),
            'question_text_color'  => esc_html__('Question Text Color', 'aj-faq-block'),
            'ablock_bg_color'      => esc_html__('Answer Background Color', 'aj-faq-block'),
            'answer_text_color'    => esc_html__('Answer Text Color', 'aj-faq-block'),
        ];

        // Default values
        $defaults = [
            'block_bg_color'       => '#ffffff',
            'qblock_bg_color'      => '#007BFF',
            'qhblock_bg_color'     => '#0056b3',
            'question_text_color'  => '#ffffff',
            'ablock_bg_color'      => '#ffffff',
            'answer_text_color'    => '#020202',
        ];

        foreach ($defaults as $key => $default) {
            $wp_customize->add_setting($key, array(
                'default'           => $default,
                'sanitize_callback' => 'sanitize_hex_color',
            ));

            $wp_customize->add_control(new WP_Customize_Color_Control($wp_customize, $key, array(
                'label'    => $labels[$key],
                'section'  => 'ajfaqblock_settings',
                'settings' => $key,
            )));
        }
    }
    add_action('customize_register', 'ajfaqblock_customize_register');

    // Output customizer styles in the frontend
    function ajfaqblock_customize_css() {
        // Ensure the main stylesheet is enqueued
        if (!wp_style_is('ajfaqblock-style', 'enqueued')) {
            wp_enqueue_style(
                'ajfaqblock-style',
                plugins_url('css/aj-faq-block-style.css', __FILE__), array(), AJFAQBLOCK_VERSION);
        }

        $css = "
            .faq-body {
                background: " . esc_attr(get_theme_mod('block_bg_color', '#ffffff')) . ";
            }
            .faq-question {
                background: " . esc_attr(get_theme_mod('qblock_bg_color', '#007BFF')) . ";
                color: " . esc_attr(get_theme_mod('question_text_color', '#ffffff')) . ";
            }
            .faq-question:hover {
                background: " . esc_attr(get_theme_mod('qhblock_bg_color', '#0056b3')) . ";
            }
            .faq-answer {
                background: " . esc_attr(get_theme_mod('ablock_bg_color', '#ffffff')) . ";
                color: " . esc_attr(get_theme_mod('answer_text_color', '#020202')) . ";
            }
        ";

        wp_add_inline_style('ajfaqblock-style', $css);
    }
    add_action('wp_enqueue_scripts', 'ajfaqblock_customize_css');