<?php
/**
 * Plugin Name: AGAPOVDEV Smart Contact Buttons
 * Plugin URI: https://agapov.dev/product/floating-contact-buttons/
 * Description: Lightweight floating contact buttons with schedules, page targeting and device visibility controls.
 * Requires at least: 6.0
 * Requires PHP: 7.4
 * Version: 1.1.0
 * Author: AGAPOVDEV
 * Author URI: https://agapov.dev/
 * License: GPL v2 or later
 * License URI: https://www.gnu.org/licenses/gpl-2.0.html
 * Text Domain: agapovdev-floating-contact-buttons
 */

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

final class AGAPOVDEV_Floating_Contact_Buttons {
    const OPTION_KEY = 'agapovdev_fcb_options';
    const VERSION = '1.1.0';

    public function __construct() {
        add_action( 'admin_menu', array( $this, 'add_admin_menu' ) );
        add_action( 'admin_init', array( $this, 'register_settings' ) );
        add_action( 'wp_enqueue_scripts', array( $this, 'enqueue_assets' ) );
        add_action( 'wp_footer', array( $this, 'render_widget' ) );
    }

    public function defaults() {
        return array(
            'enabled' => 1, 'position' => 'right', 'phone' => '', 'viber' => '', 'telegram' => '', 'whatsapp' => '',
            'whatsapp_message' => '', 'open_new_tab' => 1, 'pulse' => 1, 'button_size' => 56, 'show_labels' => 0,
            'devices' => 'all', 'schedule_enabled' => 0, 'schedule_start' => '09:00', 'schedule_end' => '18:00',
            'schedule_days' => array( '1','2','3','4','5' ), 'visibility_mode' => 'everywhere', 'page_ids' => '',
        );
    }

    public function get_options() { return wp_parse_args( get_option( self::OPTION_KEY, array() ), $this->defaults() ); }

    public function add_admin_menu() {
        add_options_page( __( 'AGAPOVDEV Smart Contact Buttons', 'agapovdev-floating-contact-buttons' ), __( 'AGAPOVDEV Contact', 'agapovdev-floating-contact-buttons' ), 'manage_options', 'agapovdev-floating-contact-buttons', array( $this, 'settings_page' ) );
    }

    public function register_settings() {
        register_setting( 'agapovdev_fcb_group', self::OPTION_KEY, array( 'type' => 'array', 'sanitize_callback' => array( $this, 'sanitize_options' ), 'default' => $this->defaults() ) );
    }

    private function sanitize_time( $value, $fallback ) {
        $value = sanitize_text_field( (string) $value );
        return preg_match( '/^(?:[01]\d|2[0-3]):[0-5]\d$/', $value ) ? $value : $fallback;
    }

    public function sanitize_options( $input ) {
        $input = is_array( $input ) ? $input : array();
        $out = $this->defaults();
        $out['enabled'] = empty( $input['enabled'] ) ? 0 : 1;
        $out['position'] = ( isset( $input['position'] ) && 'left' === $input['position'] ) ? 'left' : 'right';
        foreach ( array( 'phone','viber','telegram','whatsapp' ) as $key ) { $out[ $key ] = isset( $input[ $key ] ) ? sanitize_text_field( $input[ $key ] ) : ''; }
        $out['whatsapp_message'] = isset( $input['whatsapp_message'] ) ? sanitize_textarea_field( $input['whatsapp_message'] ) : '';
        $out['open_new_tab'] = empty( $input['open_new_tab'] ) ? 0 : 1;
        $out['pulse'] = empty( $input['pulse'] ) ? 0 : 1;
        $out['show_labels'] = empty( $input['show_labels'] ) ? 0 : 1;
        $out['button_size'] = isset( $input['button_size'] ) ? min( 84, max( 40, absint( $input['button_size'] ) ) ) : 56;
        $out['devices'] = isset( $input['devices'] ) && in_array( $input['devices'], array( 'all','desktop','mobile' ), true ) ? $input['devices'] : 'all';
        $out['schedule_enabled'] = empty( $input['schedule_enabled'] ) ? 0 : 1;
        $out['schedule_start'] = $this->sanitize_time( isset( $input['schedule_start'] ) ? $input['schedule_start'] : '', '09:00' );
        $out['schedule_end'] = $this->sanitize_time( isset( $input['schedule_end'] ) ? $input['schedule_end'] : '', '18:00' );
        $days = isset( $input['schedule_days'] ) && is_array( $input['schedule_days'] ) ? array_map( 'absint', $input['schedule_days'] ) : array();
        $out['schedule_days'] = array_map( 'strval', array_values( array_intersect( array(1,2,3,4,5,6,7), $days ) ) );
        $out['visibility_mode'] = isset( $input['visibility_mode'] ) && in_array( $input['visibility_mode'], array( 'everywhere','include','exclude' ), true ) ? $input['visibility_mode'] : 'everywhere';
        $ids = isset( $input['page_ids'] ) ? preg_split( '/[\s,]+/', sanitize_text_field( $input['page_ids'] ) ) : array();
        $ids = array_filter( array_map( 'absint', $ids ) );
        $out['page_ids'] = implode( ',', array_unique( $ids ) );
        return $out;
    }

    public function settings_page() {
        if ( ! current_user_can( 'manage_options' ) ) { return; }
        $o = $this->get_options();
        $days = array( '1'=>'Mon','2'=>'Tue','3'=>'Wed','4'=>'Thu','5'=>'Fri','6'=>'Sat','7'=>'Sun' );
        ?>
        <div class="wrap"><h1><?php esc_html_e( 'AGAPOVDEV Smart Contact Buttons', 'agapovdev-floating-contact-buttons' ); ?></h1>
        <p><?php esc_html_e( 'Configure contact methods, targeting and availability without external services.', 'agapovdev-floating-contact-buttons' ); ?></p>
        <form method="post" action="options.php"><?php settings_fields( 'agapovdev_fcb_group' ); ?>
        <table class="form-table" role="presentation">
        <tr><th scope="row"><?php esc_html_e( 'Enable widget', 'agapovdev-floating-contact-buttons' ); ?></th><td><label><input type="checkbox" name="<?php echo esc_attr( self::OPTION_KEY ); ?>[enabled]" value="1" <?php checked( $o['enabled'], 1 ); ?>> <?php esc_html_e( 'Show on the site', 'agapovdev-floating-contact-buttons' ); ?></label></td></tr>
        <tr><th scope="row"><?php esc_html_e( 'Position', 'agapovdev-floating-contact-buttons' ); ?></th><td><select name="<?php echo esc_attr( self::OPTION_KEY ); ?>[position]"><option value="right" <?php selected( $o['position'], 'right' ); ?>><?php esc_html_e( 'Right', 'agapovdev-floating-contact-buttons' ); ?></option><option value="left" <?php selected( $o['position'], 'left' ); ?>><?php esc_html_e( 'Left', 'agapovdev-floating-contact-buttons' ); ?></option></select></td></tr>
        <tr><th scope="row"><?php esc_html_e( 'Phone', 'agapovdev-floating-contact-buttons' ); ?></th><td><input class="regular-text" type="text" name="<?php echo esc_attr( self::OPTION_KEY ); ?>[phone]" value="<?php echo esc_attr( $o['phone'] ); ?>" placeholder="+380501234567"></td></tr>
        <tr><th scope="row"><?php esc_html_e( 'Viber', 'agapovdev-floating-contact-buttons' ); ?></th><td><input class="regular-text" type="text" name="<?php echo esc_attr( self::OPTION_KEY ); ?>[viber]" value="<?php echo esc_attr( $o['viber'] ); ?>" placeholder="+380501234567"></td></tr>
        <tr><th scope="row"><?php esc_html_e( 'Telegram', 'agapovdev-floating-contact-buttons' ); ?></th><td><input class="regular-text" type="text" name="<?php echo esc_attr( self::OPTION_KEY ); ?>[telegram]" value="<?php echo esc_attr( $o['telegram'] ); ?>" placeholder="username or https://t.me/username"></td></tr>
        <tr><th scope="row"><?php esc_html_e( 'WhatsApp', 'agapovdev-floating-contact-buttons' ); ?></th><td><input class="regular-text" type="text" name="<?php echo esc_attr( self::OPTION_KEY ); ?>[whatsapp]" value="<?php echo esc_attr( $o['whatsapp'] ); ?>" placeholder="380501234567"><p><textarea class="large-text" rows="2" name="<?php echo esc_attr( self::OPTION_KEY ); ?>[whatsapp_message]" placeholder="<?php esc_attr_e( 'Optional pre-filled WhatsApp message', 'agapovdev-floating-contact-buttons' ); ?>"><?php echo esc_textarea( $o['whatsapp_message'] ); ?></textarea></p></td></tr>
        <tr><th scope="row"><?php esc_html_e( 'Button size', 'agapovdev-floating-contact-buttons' ); ?></th><td><input type="number" min="40" max="84" name="<?php echo esc_attr( self::OPTION_KEY ); ?>[button_size]" value="<?php echo esc_attr( $o['button_size'] ); ?>"> px</td></tr>
        <tr><th scope="row"><?php esc_html_e( 'Devices', 'agapovdev-floating-contact-buttons' ); ?></th><td><select name="<?php echo esc_attr( self::OPTION_KEY ); ?>[devices]"><option value="all" <?php selected( $o['devices'], 'all' ); ?>><?php esc_html_e( 'All devices', 'agapovdev-floating-contact-buttons' ); ?></option><option value="desktop" <?php selected( $o['devices'], 'desktop' ); ?>><?php esc_html_e( 'Desktop only', 'agapovdev-floating-contact-buttons' ); ?></option><option value="mobile" <?php selected( $o['devices'], 'mobile' ); ?>><?php esc_html_e( 'Mobile only', 'agapovdev-floating-contact-buttons' ); ?></option></select></td></tr>
        <tr><th scope="row"><?php esc_html_e( 'Page targeting', 'agapovdev-floating-contact-buttons' ); ?></th><td><select name="<?php echo esc_attr( self::OPTION_KEY ); ?>[visibility_mode]"><option value="everywhere" <?php selected( $o['visibility_mode'], 'everywhere' ); ?>><?php esc_html_e( 'Everywhere', 'agapovdev-floating-contact-buttons' ); ?></option><option value="include" <?php selected( $o['visibility_mode'], 'include' ); ?>><?php esc_html_e( 'Only selected post/page IDs', 'agapovdev-floating-contact-buttons' ); ?></option><option value="exclude" <?php selected( $o['visibility_mode'], 'exclude' ); ?>><?php esc_html_e( 'Everywhere except selected IDs', 'agapovdev-floating-contact-buttons' ); ?></option></select><p><input class="regular-text" type="text" name="<?php echo esc_attr( self::OPTION_KEY ); ?>[page_ids]" value="<?php echo esc_attr( $o['page_ids'] ); ?>" placeholder="12, 34, 56"></p></td></tr>
        <tr><th scope="row"><?php esc_html_e( 'Working schedule', 'agapovdev-floating-contact-buttons' ); ?></th><td><label><input type="checkbox" name="<?php echo esc_attr( self::OPTION_KEY ); ?>[schedule_enabled]" value="1" <?php checked( $o['schedule_enabled'], 1 ); ?>> <?php esc_html_e( 'Show only during these hours (site timezone)', 'agapovdev-floating-contact-buttons' ); ?></label><p><input type="time" name="<?php echo esc_attr( self::OPTION_KEY ); ?>[schedule_start]" value="<?php echo esc_attr( $o['schedule_start'] ); ?>"> — <input type="time" name="<?php echo esc_attr( self::OPTION_KEY ); ?>[schedule_end]" value="<?php echo esc_attr( $o['schedule_end'] ); ?>"></p><p><?php foreach ( $days as $num => $label ) : ?><label style="margin-right:10px"><input type="checkbox" name="<?php echo esc_attr( self::OPTION_KEY ); ?>[schedule_days][]" value="<?php echo esc_attr( $num ); ?>" <?php checked( in_array( (string) $num, (array) $o['schedule_days'], true ) ); ?>> <?php echo esc_html( $label ); ?></label><?php endforeach; ?></p></td></tr>
        <tr><th scope="row"><?php esc_html_e( 'Options', 'agapovdev-floating-contact-buttons' ); ?></th><td><label><input type="checkbox" name="<?php echo esc_attr( self::OPTION_KEY ); ?>[open_new_tab]" value="1" <?php checked( $o['open_new_tab'], 1 ); ?>> <?php esc_html_e( 'Open messenger links in a new tab', 'agapovdev-floating-contact-buttons' ); ?></label><br><label><input type="checkbox" name="<?php echo esc_attr( self::OPTION_KEY ); ?>[pulse]" value="1" <?php checked( $o['pulse'], 1 ); ?>> <?php esc_html_e( 'Pulse the main button', 'agapovdev-floating-contact-buttons' ); ?></label><br><label><input type="checkbox" name="<?php echo esc_attr( self::OPTION_KEY ); ?>[show_labels]" value="1" <?php checked( $o['show_labels'], 1 ); ?>> <?php esc_html_e( 'Show text labels', 'agapovdev-floating-contact-buttons' ); ?></label></td></tr>
        </table><?php submit_button(); ?></form></div><?php
    }

    private function should_render( $o ) {
        if ( empty( $o['enabled'] ) ) { return false; }
        if ( 'everywhere' !== $o['visibility_mode'] && is_singular() ) {
            $ids = array_filter( array_map( 'absint', explode( ',', $o['page_ids'] ) ) );
            $matched = in_array( get_queried_object_id(), $ids, true );
            if ( ( 'include' === $o['visibility_mode'] && ! $matched ) || ( 'exclude' === $o['visibility_mode'] && $matched ) ) { return false; }
        } elseif ( 'include' === $o['visibility_mode'] && ! is_singular() ) { return false; }
        if ( ! empty( $o['schedule_enabled'] ) ) {
            $now = current_datetime();
            if ( ! in_array( $now->format( 'N' ), (array) $o['schedule_days'], true ) ) { return false; }
            $current = $now->format( 'H:i' ); $start = $o['schedule_start']; $end = $o['schedule_end'];
            $inside = ( $start <= $end ) ? ( $current >= $start && $current <= $end ) : ( $current >= $start || $current <= $end );
            if ( ! $inside ) { return false; }
        }
        return true;
    }

    public function enqueue_assets() {
        $o = $this->get_options(); if ( ! $this->should_render( $o ) ) { return; }
        wp_enqueue_style( 'agapovdev-fcb', plugin_dir_url( __FILE__ ) . 'assets/fcb.css', array(), self::VERSION );
        wp_enqueue_script( 'agapovdev-fcb', plugin_dir_url( __FILE__ ) . 'assets/fcb.js', array(), self::VERSION, true );
        wp_add_inline_style( 'agapovdev-fcb', ':root{--agfcb-size:' . absint( $o['button_size'] ) . 'px;}' );
    }

    private function normalize_phone( $value ) { return preg_replace( '/[^0-9+]/', '', (string) $value ); }
    private function digits_only( $value ) { return preg_replace( '/\D+/', '', (string) $value ); }
    private function telegram_url( $value ) { $value = trim( (string) $value ); if ( '' === $value ) { return ''; } if ( preg_match( '#^https://(?:t\.me|telegram\.me)/#i', $value ) ) { return esc_url_raw( $value ); } $username = preg_replace( '/[^A-Za-z0-9_]/', '', ltrim( $value, '@' ) ); return $username ? 'https://t.me/' . $username : ''; }

    private function icon_svg( $type ) {
        $icons = array(
            'phone'=>'<svg viewBox="0 0 24 24" aria-hidden="true"><path d="M6.62 10.79a15.46 15.46 0 0 0 6.59 6.59l2.2-2.2a1 1 0 0 1 1.01-.24 11.36 11.36 0 0 0 3.58.57 1 1 0 0 1 1 1V20a1 1 0 0 1-1 1C10.61 21 3 13.39 3 4a1 1 0 0 1 1-1h3.5a1 1 0 0 1 1 1c0 1.25.2 2.45.57 3.58a1 1 0 0 1-.25 1.01l-2.2 2.2Z"/></svg>',
            'viber'=>'<svg viewBox="0 0 24 24" aria-hidden="true"><path d="M17.5 2h-11A4.5 4.5 0 0 0 2 6.5v7A4.5 4.5 0 0 0 6.5 18H8v3l4-3h5.5a4.5 4.5 0 0 0 4.5-4.5v-7A4.5 4.5 0 0 0 17.5 2Zm.8 11.8c-.2.5-1 1-1.5 1.1-.4.1-.9.1-1.5-.1-.4-.1-.9-.3-1.6-.6-2.8-1.2-4.6-4-4.7-4.2-.1-.2-1.1-1.5-1.1-2.8s.7-2 1-2.3c.3-.3.6-.4.8-.4h.6c.2 0 .5 0 .7.5.2.5.8 1.9.8 2.1.1.1.1.3 0 .5-.1.2-.2.3-.3.5-.1.1-.3.3-.4.5-.1.1-.3.3-.1.6.2.3.7 1.2 1.6 1.9 1.1 1 2 1.3 2.3 1.5.3.1.5.1.7-.1.2-.2.8-.9 1-1.2.2-.3.4-.2.7-.1.3.1 1.8.9 2.1 1 .3.2.5.2.6.4.1.1.1.7-.1 1.2Z"/></svg>',
            'telegram'=>'<svg viewBox="0 0 24 24" aria-hidden="true"><path d="M21.8 3.3 18.6 19c-.2 1.1-.9 1.4-1.8.9l-4.9-3.6-2.4 2.3c-.3.3-.5.5-1 .5l.4-5 9.1-8.2c.4-.4-.1-.6-.6-.2L6.1 12.8 1.3 11.3C.2 11 .2 10.3 1.5 9.8L20.3 2.6c.9-.3 1.7.2 1.5.7Z"/></svg>',
            'whatsapp'=>'<svg viewBox="0 0 24 24" aria-hidden="true"><path d="M12 2a9.8 9.8 0 0 0-8.4 14.9L2 22l5.2-1.5A9.9 9.9 0 1 0 12 2Zm0 17.8c-1.5 0-2.9-.4-4.1-1.1l-.3-.2-3.1.9.9-3-.2-.3A7.8 7.8 0 1 1 12 19.8Zm4.3-5.8c-.2-.1-1.4-.7-1.6-.8-.2-.1-.4-.1-.6.1-.2.2-.6.8-.8 1-.1.2-.3.2-.5.1-.2-.1-1-.4-1.9-1.2-.7-.6-1.2-1.4-1.3-1.6-.1-.2 0-.4.1-.5l.4-.4.3-.4c.1-.1.1-.3 0-.4-.1-.1-.6-1.5-.9-2-.2-.5-.5-.4-.6-.4h-.5c-.2 0-.4.1-.7.3-.2.2-.9.9-.9 2.2s.9 2.5 1 2.7c.1.2 1.8 2.8 4.4 3.9.6.3 1.1.4 1.5.5.6.2 1.2.2 1.7.1.5-.1 1.4-.6 1.6-1.2.2-.6.2-1.1.1-1.2-.1-.2-.3-.2-.5-.3Z"/></svg>',
            'main'=>'<svg viewBox="0 0 24 24" aria-hidden="true"><path d="M4 4h16a2 2 0 0 1 2 2v10a2 2 0 0 1-2 2h-7l-5 4v-4H4a2 2 0 0 1-2-2V6a2 2 0 0 1 2-2Zm3 5h10v2H7V9Zm0 4h7v2H7v-2Z"/></svg>',
        );
        return isset( $icons[ $type ] ) ? $icons[ $type ] : '';
    }

    private function escape_contact_url( $url ) { return esc_url( $url, array( 'http','https','tel','viber' ) ); }

    public function render_widget() {
        $o = $this->get_options(); if ( ! $this->should_render( $o ) ) { return; }
        $items = array(); $phone = $this->normalize_phone( $o['phone'] );
        if ( $phone && preg_match( '/\d/', $phone ) ) { $items[] = array( 'type'=>'phone','label'=>__( 'Phone', 'agapovdev-floating-contact-buttons' ),'url'=>'tel:' . $phone ); }
        $viber = $this->normalize_phone( $o['viber'] ); if ( $viber && preg_match( '/\d/', $viber ) ) { $items[] = array( 'type'=>'viber','label'=>__( 'Viber', 'agapovdev-floating-contact-buttons' ),'url'=>'viber://chat?number=' . rawurlencode( $viber ) ); }
        $telegram = $this->telegram_url( $o['telegram'] ); if ( $telegram ) { $items[] = array( 'type'=>'telegram','label'=>__( 'Telegram', 'agapovdev-floating-contact-buttons' ),'url'=>$telegram ); }
        $whatsapp = $this->digits_only( $o['whatsapp'] ); if ( $whatsapp ) { $url = 'https://wa.me/' . $whatsapp; if ( $o['whatsapp_message'] ) { $url .= '?text=' . rawurlencode( $o['whatsapp_message'] ); } $items[] = array( 'type'=>'whatsapp','label'=>__( 'WhatsApp', 'agapovdev-floating-contact-buttons' ),'url'=>$url ); }
        if ( empty( $items ) ) { return; }
        $classes = 'agfcb agfcb--' . $o['position'] . ' agfcb--device-' . $o['devices']; if ( $o['show_labels'] ) { $classes .= ' agfcb--labels'; }
        ?>
        <div class="<?php echo esc_attr( $classes ); ?>" data-agfcb><div class="agfcb__items" aria-hidden="true">
        <?php foreach ( $items as $item ) : ?><a class="agfcb__item agfcb__item--<?php echo esc_attr( $item['type'] ); ?>" href="<?php echo esc_url( $this->escape_contact_url( $item['url'] ) ); ?>"<?php if ( $o['open_new_tab'] && 'phone' !== $item['type'] ) : ?> target="_blank" rel="noopener noreferrer"<?php endif; ?> aria-label="<?php echo esc_attr( $item['label'] ); ?>"><span class="agfcb__label"><?php echo esc_html( $item['label'] ); ?></span><?php echo $this->icon_svg( $item['type'] ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped ?></a><?php endforeach; ?>
        </div><button class="agfcb__toggle<?php echo $o['pulse'] ? ' is-pulsing' : ''; ?>" type="button" aria-expanded="false" aria-label="<?php esc_attr_e( 'Open contact options', 'agapovdev-floating-contact-buttons' ); ?>"><?php echo $this->icon_svg( 'main' ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped ?></button></div><?php
    }
}
new AGAPOVDEV_Floating_Contact_Buttons();