<?php
/**
 * Plugin Name: Admark CRM
 * Description: Sends WhatsApp messages via Admark CRM API for WooCommerce automation events. Supports Welcome, Add to Cart Reminder, Abandoned Cart, Order Confirmation, Payment Confirmation, Order Dispatch, Delivery Confirmation, Feedback, Reorder, and Campaign messages.
 * Version: 3.3.7
 * Author: Admark
 * License: GPLv2 or later
 * License URI: https://www.gnu.org/licenses/gpl-2.0.html
 * Text Domain: admark-crm
 */

if ( ! defined( 'ABSPATH' ) ) { exit; }

// ==== DEFAULTS (used if options are empty) ====
define( 'WATS_API_BASE', 'https://verifiedwhatsapp.admarksolution.com/api/send/bytemplate' );
if ( ! defined( 'WATS_API_KEY' ) )          define( 'WATS_API_KEY', '' );
if ( ! defined( 'WATS_PHONE_NUMBER_ID' ) )  define( 'WATS_PHONE_NUMBER_ID', '' );
// =============================================

if ( ! function_exists( 'wats_str_starts_with' ) ) {
    function wats_str_starts_with( $haystack, $needle ) {
        $haystack = (string) $haystack;
        $needle   = (string) $needle;
        if ( $needle === '' ) { return true; }
        return strncmp( $haystack, $needle, strlen( $needle ) ) === 0;
    }
}

// ==== HELPER: GET DYNAMIC PLUGIN VERSION FROM HEADER ====
function wats_get_plugin_version() {
    if ( ! function_exists( 'get_plugin_data' ) ) {
        require_once( ABSPATH . 'wp-admin/includes/plugin.php' );
    }
    $plugin_data = get_plugin_data( __FILE__ );
    return ! empty( $plugin_data['Version'] ) ? $plugin_data['Version'] : '3.3.7';
}

// ==== AUTOMATION EVENT DEFINITIONS ====
function wats_get_events() {
    return array(
        'order_confirmation' => array(
            'label'        => 'Order Confirmation',
            'description'  => 'Sent immediately when a WooCommerce order payment is successfully done.',
            'placeholders' => '{{1}} = Order ID, {{2}} = Order Amount',
            'sample'       => "Thank you for shopping with Admark 🙏\n\nYour order has been successfully placed.\n\n📦 Order ID: {{1}}\n💰 Amount: ₹{{2}}",
            'var_count'    => 2,
            'var_defaults' => array( 1 => 'order_id', 2 => 'order_total' ),
        ),
        'payment_confirmation' => array(
            'label'        => 'Payment Confirmation',
            'description'  => 'Sent when payment status changes to processing or completed successfully.',
            'placeholders' => '{{1}} = Customer Name, {{2}} = Order ID',
            'sample'       => "Hi {{1}}\n\nWe have received your payment successfully for Order ID {{2}} ✅\n\nYour order is now being processed.",
            'var_count'    => 2,
            'var_defaults' => array( 1 => 'customer_name', 2 => 'order_id' ),
        ),
        'order_dispatch' => array(
            'label'        => 'Order Dispatch',
            'description'  => 'Sent when order status changes to Shipped or Dispatched.',
            'placeholders' => '{{1}} = Customer Name, {{2}} = Order ID, {{3}} = Tracking Link',
            'sample'       => "Good news {{1}} 🎉\n\nYour Admark order has been dispatched.\n\n📦 Order ID: {{2}}\n🚚 Tracking Link: {{3}}",
            'var_count'    => 3,
            'var_defaults' => array( 1 => 'customer_name', 2 => 'order_id', 3 => 'tracking_link' ),
        ),
        'delivery_confirmation' => array(
            'label'        => 'Delivery Confirmation',
            'description'  => 'Sent immediately when order status changes to Completed.',
            'placeholders' => '{{1}} = Customer Name, {{2}} = Order ID',
            'sample'       => "Hi {{1}}\n\nYour Admark order ID {{2}} has been delivered successfully ✅\n\nThank you for shopping with Admark 🙏",
            'var_count'    => 2,
            'var_defaults' => array( 1 => 'customer_name', 2 => 'order_id' ),
        ),
        'feedback_request' => array(
            'label'        => 'Feedback / Review Request',
            'description'  => 'Sent automatically after delivery status triggers.',
            'placeholders' => '{{1}} = Customer Name, {{2}} = Review Link',
            'sample'       => "Namaste {{1}}\n\nWe hope you loved your purchase 😊\n\nPlease share your feedback:\n{{2}}",
            'var_count'    => 2,
            'var_defaults' => array( 1 => 'customer_name', 2 => 'review_link' ),
        ),
        'reorder_reminder' => array(
            'label'        => 'Repeat Purchase / Reorder',
            'description'  => 'Sent to customer if no new purchase is made within the configured days/months.',
            'placeholders' => '{{1}} = Customer Name, {{2}} = Shop Link',
            'sample'       => "Hello {{1}}\n\nRunning low on your favorite products?\n\n🛒 Reorder here:\n{{2}}",
            'var_count'    => 2,
            'var_defaults' => array( 1 => 'customer_name', 2 => 'shop_url' ),
        ),
        'welcome' => array(
            'label'        => 'Welcome Message',
            'description'  => 'Sent ONLY FIRST TIME when a new customer profile registers or logs in.',
            'placeholders' => '{{1}} = Customer Name, {{2}} = Shop Link',
            'sample'       => "Namaste {{1}} 👋\n\nWelcome to Admark Online Shopping.\n\n🛒 Shop Now: {{2}}",
            'var_count'    => 2,
            'var_defaults' => array( 1 => 'customer_name', 2 => 'shop_url' ),
        ),
        'add_to_cart' => array(
            'label'        => 'Add to Cart Reminder',
            'description'  => 'Sent as per set delay time if products are added but not purchased.',
            'placeholders' => '{{1}} = Customer Name, {{2}} = Cart URL',
            'sample'       => "Hi {{1}} 😊\n\nYou left items in your cart. Complete your order here:\n{{2}}",
            'var_count'    => 2,
            'var_defaults' => array( 1 => 'customer_name', 2 => 'cart_url' ),
        ),
        'abandoned_cart' => array(
            'label'        => 'Abandoned Cart',
            'description'  => 'Sent after cart reminder delay limits trigger without checkout.',
            'placeholders' => '{{1}} = Customer Name, {{2}} = Cart URL',
            'sample'       => "Hello {{1}} 🛒\n\nYour selected items are waiting. Resume order here:\n{{2}}",
            'var_count'    => 2,
            'var_defaults' => array( 1 => 'customer_name', 2 => 'cart_url' ),
        ),
        'payment_failed' => array(
            'label'        => 'Payment Failed',
            'description'  => 'Sent immediately when an order payment fails.',
            'placeholders' => '{{1}} = Customer Name, {{2}} = Order ID',
            'sample'       => "Hi {{1}}\n\nWe were unable to process your payment for Order ID {{2}} ❌. Please try again.",
            'var_count'    => 2,
            'var_defaults' => array( 1 => 'customer_name', 2 => 'order_id' ),
        ),
        'refund' => array(
            'label'        => 'Refund',
            'description'  => 'Sent immediately when a WooCommerce order is refunded.',
            'placeholders' => '{{1}} = Customer Name, {{2}} = Order ID, {{3}} = Refund Amount',
            'sample'       => "Hi {{1}}\n\nYour refund for Order ID {{2}} has been processed ✅\n\nAmount: ₹{{3}}",
            'var_count'    => 3,
            'var_defaults' => array( 1 => 'customer_name', 2 => 'order_id', 3 => 'order_total' ),
        ),
        'offer_campaign' => array(
            'label'        => 'Offer & Festival Campaign',
            'description'  => 'Promotional blast engine dashboard handler.',
            'placeholders' => '{{1}} = Shop/Offer Link',
            'sample'       => "🎉 Admark Festive Offer! Check deals here:\n{{1}}",
            'var_count'    => 1,
            'var_defaults' => array( 1 => 'shop_url' ),
        )
    );
}

// Option getters
function wats_get_api_key() { return trim((string)get_option('wats_api_key', '')); }
function wats_get_phone_number_id() { return trim((string)get_option('wats_phone_number_id', '')); }
function wats_get_selected_template() { return trim((string)get_option('wats_selected_template', '')); }
function wats_get_event_template( $event ) { return trim((string)get_option('wats_tpl_' . $event, '')); }
function wats_get_event_enabled( $event ) { return (bool)get_option('wats_enable_' . $event, 0); }

function wats_get_event_delay( $event ) {
    $defaults = array(
        'welcome'          => array( 'value' => 0,  'unit' => 'minutes' ),
        'add_to_cart'      => array( 'value' => 20, 'unit' => 'minutes' ),
        'abandoned_cart'   => array( 'value' => 3,  'unit' => 'hours' ),
        'feedback_request' => array( 'value' => 2,  'unit' => 'days' ),
        'reorder_reminder' => array( 'value' => 1,  'unit' => 'months' )
    );
    $def  = isset( $defaults[ $event ] ) ? $defaults[ $event ] : array( 'value' => 0, 'unit' => 'minutes' );
    $val  = (int) get_option( 'wats_delay_val_'  . $event, $def['value'] );
    $unit = sanitize_key( (string) get_option( 'wats_delay_unit_' . $event, $def['unit'] ) );
    switch ( $unit ) {
        case 'hours':  return $val * HOUR_IN_SECONDS;
        case 'days':   return $val * DAY_IN_SECONDS;
        case 'months': return $val * 30 * DAY_IN_SECONDS;
        default:       return $val * MINUTE_IN_SECONDS;
    }
}

// ==== VARIABLE MAPPING HELPERS ====
function wats_get_variable_options() {
    return array(
        'customer_name'   => 'Customer Name',
        'phone'           => 'Mobile Number',
        'email'           => 'Email',
        'billing_address' => 'Billing Address',
        'order_id'        => 'Order ID',
        'order_total'     => 'Order Amount',
        'product_names'   => 'Product Name(s)',
        'product_qty'     => 'Product Quantity',
        'tracking_link'   => 'Tracking Link',
        'shop_url'        => 'Shop URL',
        'cart_url'        => 'Cart URL',
        'review_link'     => 'Review Link',
    );
}

function wats_get_var_map( $event, $slot ) {
    $saved = trim( (string) get_option( 'wats_varmap_' . $event . '_' . $slot, '' ) );
    if ( $saved !== '' ) { return $saved; }
    $events = wats_get_events();
    return isset( $events[ $event ]['var_defaults'][ $slot ] ) ? $events[ $event ]['var_defaults'][ $slot ] : '';
}

function wats_resolve_var( $key, $order = null, $user = null ) {
    switch ( $key ) {
        case 'customer_name':
            if ( $order ) { return trim( $order->get_billing_first_name() . ' ' . $order->get_billing_last_name() ); }
            if ( $user )  { return trim( $user->first_name . ' ' . $user->last_name ) ?: $user->display_name; }
            return '';
        case 'phone':
            if ( $order ) { return $order->get_billing_phone(); }
            if ( $user )  { return (string) get_user_meta( $user->ID, 'billing_phone', true ); }
            return '';
        case 'email':
            if ( $order ) { return $order->get_billing_email(); }
            if ( $user )  { return $user->user_email; }
            return '';
        case 'billing_address':
            if ( $order ) { return wp_strip_all_tags( $order->get_formatted_billing_address() ); }
            return '';
        case 'order_id':
            if ( $order ) { return (string) $order->get_id(); }
            return '';
        case 'order_total':
            if ( $order ) { return html_entity_decode( wp_strip_all_tags( $order->get_formatted_order_total() ) ); }
            return '';
        case 'product_names':
            if ( $order ) {
                $names = array();
                foreach ( $order->get_items() as $item ) { $names[] = $item->get_name(); }
                return implode( ', ', $names );
            }
            return '';
        case 'product_qty':
            if ( $order ) {
                $qtys = array();
                foreach ( $order->get_items() as $item ) { $qtys[] = (string) $item->get_quantity(); }
                return implode( ', ', $qtys );
            }
            return '';
        case 'tracking_link':
            if ( $order ) {
                $link = (string) $order->get_meta( '_wats_tracking_link' );
                return $link !== '' ? $link : home_url();
            }
            return home_url();
        case 'shop_url':
            return function_exists( 'wc_get_page_id' ) ? ( get_permalink( wc_get_page_id( 'shop' ) ) ?: home_url( '/shop/' ) ) : home_url( '/shop/' );
        case 'cart_url':
            return function_exists( 'wc_get_cart_url' ) ? wc_get_cart_url() : home_url( '/cart/' );
        case 'review_link':
            if ( $order ) { return get_permalink( $order->get_id() ) ?: home_url(); }
            return home_url();
        default:
            return '';
    }
}

// ==== SANITIZERS ====
function wats_sanitize_api_key( $value ) { return sanitize_text_field( (string) $value ); }
function wats_sanitize_phone_number_id( $value ) { return preg_replace( '/\D+/', '', sanitize_text_field( (string) $value ) ); }
function wats_sanitize_selected_template( $value ) {
    $val = sanitize_text_field( (string) $value );
    if ( $val === '' ) { return ''; }
    $templates = get_transient( 'wats_templates_cache' ) ?: wats_fetch_templates();
    return is_array( $templates ) && in_array( $val, $templates, true ) ? $val : '';
}
function wats_sanitize_send_count( $value ) { return absint( $value ); }
function wats_sanitize_send_log( $value ) {
    if ( ! is_array( $value ) ) { return array(); }
    $out = array();
    foreach ( $value as $entry ) {
        if ( is_array( $entry ) && isset($entry['utc']) ) {
            $out[] = array(
                'local' => sanitize_text_field($entry['local'] ?? ''),
                'utc'   => (int)$entry['utc'],
                'event' => sanitize_text_field($entry['event'] ?? 'campaign'),
                'recipient' => sanitize_text_field($entry['recipient'] ?? 'Unknown'),
                'template' => sanitize_text_field($entry['template'] ?? '—')
            );
        }
    }
    return count( $out ) > 5000 ? array_slice( $out, -5000 ) : $out;
}

function wats_normalize_phone( $raw ) {
    $digits = preg_replace( '/\D+/', '', (string) $raw );
    if ( strlen( $digits ) === 11 && wats_str_starts_with( $digits, '0' ) ) { $digits = substr( $digits, 1 ); }
    if ( wats_str_starts_with( $digits, '91' ) && strlen( $digits ) === 12 ) { return $digits; }
    return strlen( $digits ) === 10 ? '91' . $digits : $digits;
}

function wats_build_csv_for_event( $event, $order = null, $user = null ) {
    $var_count = (int) get_option( 'wats_varcount_' . $event, 0 );
    if ( $var_count <= 0 ) {
        $events = wats_get_events();
        $var_count = isset( $events[ $event ]['var_count'] ) ? (int) $events[ $event ]['var_count'] : 2;
    }
    $vars = array();
    for ( $i = 1; $i <= $var_count; $i++ ) {
        $map_key = wats_get_var_map( $event, $i );
        $vars[]  = $map_key !== '' ? wats_resolve_var( $map_key, $order, $user ) : '';
    }
    return implode( ',', array_map( 'rawurlencode', $vars ) );
}

function wats_build_url( $args ) {
    $params = array(
        'api-key'       => wats_get_api_key(),
        'templateName'  => $args['templateName'] ?? '',
        'phoneNumber'   => $args['phoneNumber'] ?? '',
        'phoneNumberId' => wats_get_phone_number_id(),
        'csvVariables'  => $args['csvVariables'] ?? '',
    );
    return add_query_arg( array_filter( $params ), WATS_API_BASE );
}

// ==== UNIVERSAL MASTER LOGGING DISPATCH WRAPPER ====
function wats_send_template( $order, $event = 'order_confirmation', $user = null ) {
    try {
        $template = wats_get_event_template( $event );
        if ( $template === '' && $event === 'order_confirmation' ) { $template = wats_get_selected_template(); }
        if ( empty( $template ) ) { return false; }

        $raw_phone = '';
        if ( $order && class_exists( 'WC_Order' ) && ( $order instanceof WC_Order ) ) {
            $raw_phone = $order->get_billing_phone();
        } elseif ( $user ) {
            $raw_phone = get_user_meta( $user->ID, 'billing_phone', true );
        }
        
        if ( empty( $raw_phone ) ) { return false; }
        $phone = wats_normalize_phone( $raw_phone );
        $csv   = wats_build_csv_for_event( $event, $order, $user );

        $response = wp_remote_get( wats_build_url( array( 'templateName' => $template, 'phoneNumber' => $phone, 'csvVariables' => $csv ) ), array( 'timeout' => 15 ) );
        if ( ! is_wp_error( $response ) && wp_remote_retrieve_response_code( $response ) == 200 ) {
            $count = (int) get_option( 'wats_send_count', 0 );
            update_option( 'wats_send_count', $count + 1, false );
            
            $log = get_option( 'wats_send_log', array() );
            $log[] = array(
                'local'     => current_time( 'mysql' ),
                'utc'       => time(),
                'event'     => $event,
                'recipient' => $phone,
                'template'  => $template
            );
            update_option( 'wats_send_log', $log, false );
            return true;
        }
    } catch ( Throwable $e ) {}
    return false;
}

// ==== WOOCOMMERCE AUTOMATION FLOW ENGINES ====

// Order & Payment Confirmation Sync Dispatches
add_action( 'woocommerce_order_status_processing', 'wats_trigger_order_payment_success', 20, 1 );
add_action( 'woocommerce_order_status_completed', 'wats_trigger_order_payment_success', 20, 1 );

function wats_trigger_order_payment_success( $order_id ) {
    if ( ! $order_id ) { return; }
    $order = wc_get_order( $order_id );
    if ( ! $order ) { return; }

    if ( wats_get_event_enabled( 'order_confirmation' ) && ! $order->get_meta( '_wats_order_confirmation_sent' ) ) {
        if ( wats_send_template( $order, 'order_confirmation' ) ) {
            $order->update_meta_data( '_wats_order_confirmation_sent', current_time( 'mysql' ) );
        }
    }
    if ( wats_get_event_enabled( 'payment_confirmation' ) && ! $order->get_meta( '_wats_payment_confirmation_sent' ) ) {
        if ( wats_send_template( $order, 'payment_confirmation' ) ) {
            $order->update_meta_data( '_wats_payment_confirmation_sent', current_time( 'mysql' ) );
        }
    }
    $order->save();
}

// Order Dispatch Logic Hook
add_action( 'woocommerce_order_status_shipped', 'wats_handle_order_dispatch', 10, 1 );
add_action( 'woocommerce_order_status_dispatched', 'wats_handle_order_dispatch', 10, 1 );
function wats_handle_order_dispatch( $order_id ) {
    if ( ! wats_get_event_enabled( 'order_dispatch' ) ) { return; }
    $order = wc_get_order( $order_id );
    if ( $order && ! $order->get_meta( '_wats_dispatch_sent' ) ) {
        if ( wats_send_template( $order, 'order_dispatch' ) ) {
            $order->update_meta_data( '_wats_dispatch_sent', current_time( 'mysql' ) );
            $order->save();
        }
    }
}

// Delivery Confirmation & Delayed Feedback Automation Trigger
add_action( 'woocommerce_order_status_completed', function( $order_id ) {
    if ( ! $order_id ) { return; }
    $order = wc_get_order( $order_id ); if ( ! $order ) { return; }

    if ( wats_get_event_enabled( 'delivery_confirmation' ) && ! $order->get_meta( '_wats_delivery_sent' ) ) {
        if ( wats_send_template( $order, 'delivery_confirmation' ) ) {
            $order->update_meta_data( '_wats_delivery_sent', current_time( 'mysql' ) );
        }
    }
    if ( wats_get_event_enabled( 'feedback_request' ) && ! $order->get_meta( '_wats_feedback_scheduled' ) ) {
        $delay = wats_get_event_delay('feedback_request');
        wp_schedule_single_event( time() + max(60, $delay), 'wats_send_feedback_cron', array( $order_id ) );
        $order->update_meta_data( '_wats_feedback_scheduled', '1' );
    }
    $order->save();
}, 10, 1 );

add_action( 'wats_send_feedback_cron', function( $order_id ) {
    $order = wc_get_order( $order_id );
    if ( $order && ! $order->get_meta( '_wats_feedback_sent' ) ) {
        if ( wats_send_template( $order, 'feedback_request' ) ) {
            $order->update_meta_data( '_wats_feedback_sent', current_time( 'mysql' ) );
            $order->save();
        }
    }
}, 10, 1 );

// ==== MASTER PAYMENT FAILED HANDLERS (CRITICAL HOOK SYNC) ====
add_action( 'woocommerce_order_status_failed', 'wats_handle_payment_failed_event', 10, 1 );
add_action( 'woocommerce_order_status_changed', 'wats_handle_payment_failed_status_changed', 10, 3 );

function wats_handle_payment_failed_event( $order_id ) {
    if ( ! wats_get_event_enabled( 'payment_failed' ) || ! $order_id ) { return; }
    $order = wc_get_order( $order_id );
    if ( $order && ! $order->get_meta( '_wats_payment_failed_sent' ) ) {
        if ( wats_send_template( $order, 'payment_failed', null ) ) {
            $order->update_meta_data( '_wats_payment_failed_sent', current_time( 'mysql' ) );
            $order->save();
        }
    }
}

function wats_handle_payment_failed_status_changed( $order_id, $old_status, $new_status ) {
    if ( 'failed' === $new_status ) {
        wats_handle_payment_failed_event( $order_id );
    }
}

// Order Refund Trigger Hook
add_action( 'woocommerce_order_refunded', function( $order_id, $refund_id ) {
    if ( ! wats_get_event_enabled( 'refund' ) ) { return; }
    $order = wc_get_order( $order_id );
    if ( $order && ! $order->get_meta( '_wats_refund_sent_' . $refund_id ) ) {
        if ( wats_send_template( $order, 'refund' ) ) {
            $order->update_meta_data( '_wats_refund_sent_' . $refund_id, current_time( 'mysql' ) );
            $order->save();
        }
    }
}, 10, 2 );

// Welcome Message — ENFORCE ONCE FOR FIRST TIME LOGINS / REGISTRATIONS
add_action( 'wp_login', 'wats_trigger_welcome_first_time', 10, 2 );
add_action( 'user_register', 'wats_trigger_welcome_first_time_reg', 10, 1 );

function wats_trigger_welcome_first_time_reg( $user_id ) { wats_execute_welcome_logic($user_id); }
function wats_trigger_welcome_first_time( $user_login, $user ) { wats_execute_welcome_logic($user->ID); }

function wats_execute_welcome_logic( $user_id ) {
    if ( ! wats_get_event_enabled( 'welcome' ) ) { return; }
    if ( get_user_meta( $user_id, '_wats_welcome_sent', true ) ) { return; } 

    $user = get_userdata( $user_id );
    if ( wats_send_template( null, 'welcome', $user ) ) {
        update_user_meta( $user_id, '_wats_welcome_sent', current_time('mysql') );
    }
}

// Add to Cart & Abandoned Scheduler Core Hook
add_action( 'woocommerce_add_to_cart', function() {
    $user_id = get_current_user_id(); if ( ! $user_id ) { return; } $args = array( $user_id );
    
    if ( wats_get_event_enabled( 'add_to_cart' ) ) {
        $existing_cart = wp_next_scheduled( 'wats_send_cart_reminder', $args );
        if ( $existing_cart ) { wp_unschedule_event( $existing_cart, 'wats_send_cart_reminder', $args ); }
        wp_schedule_single_event( time() + max( 60, wats_get_event_delay( 'add_to_cart' ) ), 'wats_send_cart_reminder', $args );
    }
    if ( wats_get_event_enabled( 'abandoned_cart' ) ) {
        $existing_abandoned = wp_next_scheduled( 'wats_send_abandoned_cart', $args );
        if ( $existing_abandoned ) { wp_unschedule_event( $existing_abandoned, 'wats_send_abandoned_cart', $args ); }
        wp_schedule_single_event( time() + max( 120, wats_get_event_delay( 'abandoned_cart' ) ), 'wats_send_abandoned_cart', $args );
    }
}, 10, 0 );

add_action( 'woocommerce_thankyou', function( $order_id ) {
    $order = wc_get_order( $order_id ); $user_id = $order ? $order->get_user_id() : 0;
    if ( $user_id ) {
        foreach ( array( 'wats_send_cart_reminder', 'wats_send_abandoned_cart' ) as $hook ) {
            $existing = wp_next_scheduled( $hook, array( $user_id ) );
            if ( $existing ) { wp_unschedule_event( $existing, $hook, array( $user_id ) ); }
        }
    }
}, 5, 1 );

add_action( 'wats_send_cart_reminder', function( $user_id ) {
    $user = get_userdata( $user_id );
    wats_send_template( null, 'add_to_cart', $user );
}, 10, 1 );

add_action( 'wats_send_abandoned_cart', function( $user_id ) {
    $user = get_userdata( $user_id );
    wats_send_template( null, 'abandoned_cart', $user );
}, 10, 1 );

// Reorder Reminder Core Engine
if ( ! wp_next_scheduled( 'wats_reorder_reminder_daily_daemon' ) ) {
    wp_schedule_event( time(), 'daily', 'wats_reorder_reminder_daily_daemon' );
}
add_action( 'wats_reorder_reminder_daily_daemon', function() {
    if ( ! wats_get_event_enabled( 'reorder_reminder' ) ) { return; }
    $delay_threshold_seconds = wats_get_event_delay( 'reorder_reminder' );
    $template = wats_get_event_template( 'reorder_reminder' ); if ( empty($template) ) { return; }

    $users = get_users( array( 'fields' => array( 'ID' ), 'number' => 5000 ) );
    foreach ( $users as $u ) {
        $last_pur = get_user_meta( $u->ID, '_wats_last_purchase_timestamp', true );
        if ( ! empty($last_pur) && ( time() - (int)$last_pur >= $delay_threshold_seconds ) ) {
            $user = get_userdata($u->ID);
            if ( wats_send_template( null, 'reorder_reminder', $user ) ) {
                update_user_meta( $u->ID, '_wats_last_purchase_timestamp', time() ); 
            }
        }
    }
} );
add_action( 'woocommerce_thankyou', function( $order_id ) {
    $order = wc_get_order( $order_id ); $user_id = $order ? $order->get_user_id() : 0;
    if ( $user_id ) { update_user_meta( $user_id, '_wats_last_purchase_timestamp', time() ); }
}, 20, 1 );

// ==== TEMPLATE CACHE MANAGEMENT ====
function wats_fetch_templates() {
    $api_key = wats_get_api_key(); if ( empty($api_key) ) { return array(); }
    $url = add_query_arg( array( 'api-key' => $api_key ), 'https://verifiedwhatsapp.admarksolution.com/templates' );
    $response = wp_remote_get( $url, array( 'timeout' => 15 ) );
    if ( is_wp_error( $response ) || wp_remote_retrieve_response_code( $response ) != 200 ) { return array(); }
    $data = json_decode( wp_remote_retrieve_body( $response ), true );
    $out = array(); $var_counts = array();
    if ( is_array( $data ) ) {
        foreach ( $data as $item ) {
            if ( is_string( $item ) ) { $out[] = $item; }
            elseif ( is_array( $item ) && isset( $item['name'] ) ) {
                $name = $item['name']; $out[] = $name; $count = 0;
                if ( isset( $item['components'] ) && is_array( $item['components'] ) ) {
                    foreach ( $item['components'] as $comp ) {
                        if ( strtoupper( $comp['type'] ?? '' ) === 'BODY' && isset( $comp['text'] ) ) {
                            if ( preg_match_all( '/\{\{(\d+)\}\}/', $comp['text'], $m ) ) { $count = max( array_map( 'intval', $m[1] ) ); }
                        }
                    }
                }
                $var_counts[$name] = $count;
            }
        }
    }
    set_transient( 'wats_templates_cache', $out, 10 * MINUTE_IN_SECONDS );
    set_transient( 'wats_template_vars_cache', $var_counts, 10 * MINUTE_IN_SECONDS );
    return $out;
}

function wats_get_template_var_counts() { return get_transient( 'wats_template_vars_cache' ) ?: array(); }

// ==== AJAX HANDLERS ====
add_action( 'wp_ajax_wats_get_template_vars', 'wats_ajax_get_template_vars_handler' );
add_action( 'wp_ajax_nopriv_wats_get_template_vars', 'wats_ajax_get_template_vars_handler' );

function wats_ajax_get_template_vars_handler() {
    check_ajax_referer( 'wats_ajax_nonce', 'nonce' );
    $template_name = sanitize_text_field( $_GET['template'] ?? '' );
    $api_key = wats_get_api_key();
    $url = add_query_arg( array( 'name' => $template_name, 'api-key' => $api_key ), 'https://verifiedwhatsapp.admarksolution.com/template-byname' );
    $response = wp_remote_get( $url, array( 'timeout' => 15 ) );
    if ( is_wp_error( $response ) ) { wp_send_json_error(); }
    $data = json_decode( wp_remote_retrieve_body( $response ), true );
    $var_count = 0;
    if ( isset( $data['components'] ) ) {
        foreach ( $data['components'] as $comp ) {
            if ( strtoupper( $comp['type'] ?? '' ) === 'BODY' && isset( $comp['text'] ) ) {
                if ( preg_match_all( '/\{\{(\d+)\}\}/', $comp['text'], $m ) ) { $var_count = max( array_map( 'intval', $m[1] ) ); }
            }
        }
    }
    wp_send_json_success( array( 'var_count' => $var_count ) );
}

add_action( 'wp_ajax_wats_get_campaign_customers', 'wats_ajax_get_campaign_customers_handler' );
add_action( 'wp_ajax_nopriv_wats_get_campaign_customers', 'wats_ajax_get_campaign_customers_handler' );

function wats_ajax_get_campaign_customers_handler() {
    check_ajax_referer( 'wats_ajax_nonce', 'nonce' );
    $paged = isset( $_POST['page'] ) ? absint( $_POST['page'] ) : 1;
    $search = isset( $_POST['search'] ) ? sanitize_text_field( $_POST['search'] ) : '';
    $number = 100;
    $args = array( 'number' => $number, 'offset' => ($paged - 1) * $number, 'fields' => array( 'ID', 'user_email', 'display_name' ) );
    if ( ! empty( $search ) ) { $args['search'] = '*' . $search . '*'; }
    $user_query = new WP_User_Query( $args );
    $customers = $user_query->get_results();
    $list = array();
    foreach ( $customers as $user ) {
        $phone = get_user_meta( $user->ID, 'billing_phone', true );
        $list[] = array(
            'id' => $user->ID,
            'name' => $user->display_name ?: 'No Name',
            'email' => $user->user_email,
            'phone' => ! empty( $phone ) ? $phone : '⚠️ No Phone Registered',
            'no_phone' => empty( $phone )
        );
    }
    wp_send_json_success( array( 'customers' => $list, 'total_users' => $user_query->get_total(), 'page' => $paged, 'total_pages' => ceil( $user_query->get_total() / $number ) ) );
}

// ==== LEFT BAR MENU SUB-LEVEL MANAGEMENT ====
add_action( 'admin_menu', function () {
    add_menu_page( 'Admark CRM', 'Admark CRM', 'manage_options', 'wats-settings', 'wats_render_settings_page', 'dashicons-whatsapp', 56 );
    add_submenu_page( 'wats-settings', 'Settings', 'Settings', 'manage_options', 'wats-settings', 'wats_render_settings_page' );
    add_submenu_page( 'wats-settings', 'Automation', 'Automation', 'manage_options', 'wats-automation', 'wats_render_automation_page' );
    add_submenu_page( 'wats-settings', 'Message Templates', 'Message Templates', 'manage_options', 'wats-message-templates', 'wats_render_message_templates_page' );
    add_submenu_page( 'wats-settings', 'Message Logs', 'Message Logs', 'manage_options', 'wats-message-logs', 'wats_render_message_logs_page' );
} );

add_action( 'admin_init', function () {
    register_setting( 'wats_settings_group', 'wats_api_key', array( 'sanitize_callback' => 'wats_sanitize_api_key' ) );
    register_setting( 'wats_settings_group', 'wats_phone_number_id', array( 'sanitize_callback' => 'wats_sanitize_phone_number_id' ) );
    register_setting( 'wats_settings_group', 'wats_selected_template', array( 'sanitize_callback' => 'wats_sanitize_selected_template' ) );
    register_setting( 'wats_settings_group', 'wats_send_count', array( 'sanitize_callback' => 'wats_sanitize_send_count' ) );
    register_setting( 'wats_settings_group', 'wats_send_log', array( 'sanitize_callback' => 'wats_sanitize_send_log' ) );
    foreach ( array_keys( wats_get_events() ) as $event ) {
        register_setting( 'wats_automation_group', 'wats_enable_' . $event, array( 'sanitize_callback' => 'absint' ) );
        register_setting( 'wats_automation_group', 'wats_tpl_' . $event, array( 'sanitize_callback' => 'sanitize_text_field' ) );
        register_setting( 'wats_automation_group', 'wats_varcount_' . $event, array( 'sanitize_callback' => 'absint' ) );
        register_setting( 'wats_automation_group', 'wats_delay_val_' . $event, array( 'sanitize_callback' => 'absint' ) );
        register_setting( 'wats_automation_group', 'wats_delay_unit_' . $event, array( 'sanitize_callback' => 'sanitize_key' ) );
    }
} );

add_action( 'admin_enqueue_scripts', function( $hook_suffix ) {
    $pages = array( 'toplevel_page_wats-settings', 'admark-crm_page_wats-automation', 'admark-crm_page_wats-message-templates', 'admark-crm_page_wats-message-logs' );
    if ( ! in_array( $hook_suffix, $pages, true ) ) { return; }
    wp_enqueue_style( 'admark-crm-admin', plugins_url( 'assets/admin.css', __FILE__ ), array(), wats_get_plugin_version() );
    wp_enqueue_script( 'admark-crm-admin', plugins_url( 'assets/admin.js', __FILE__ ), array('jquery'), wats_get_plugin_version(), true );
    
    $events = wats_get_events(); $saved_maps_js = array();
    foreach ( $events as $ek => $ev ) {
        $saved_maps_js[ $ek ] = array();
        for ( $i = 1; $i <= 10; $i++ ) { $saved_maps_js[ $ek ][ $i ] = wats_get_var_map( $ek, $i ); }
    }
    wp_localize_script( 'admark-crm-admin', 'wats_setup_vars', array( 
        'ajax_url' => admin_url( 'admin-ajax.php' ), 'nonce' => wp_create_nonce( 'wats_ajax_nonce' ),
        'tpl_var_counts' => wats_get_template_var_counts(), 'field_options' => wats_get_variable_options(), 'saved_maps' => $saved_maps_js
    ) );
} );

function wats_render_nav( $active ) {
    $tabs = array( 'wats-settings' => 'Settings', 'wats-automation' => 'Automation', 'wats-message-templates' => 'Message Templates', 'wats-message-logs' => 'Message Logs' );
    echo '<nav class="wats-nav">';
    foreach ( $tabs as $page => $label ) {
        $class = ( $active === $page ) ? 'wats-nav-tab wats-nav-tab-active' : 'wats-nav-tab';
        echo '<a href="' . esc_url( admin_url( 'admin.php?page=' . $page ) ) . '" class="' . esc_attr( $class ) . '">' . esc_html( $label ) . '</a>';
    }
    echo '</nav>';
}

function wats_render_settings_page() {
    $selected = wats_get_selected_template(); $total_sent = (int) get_option( 'wats_send_count', 0 ); $today_iso  = current_time( 'Y-m-d' );
    ?>
    <div class="wrap wats-wrap">
        <div class="wats-header">
            <span class="dashicons dashicons-whatsapp wats-header-icon"></span>
            <h1>Admark CRM</h1>
            <span class="wats-version">v<?php echo esc_html(wats_get_plugin_version()); ?></span>
        </div>
        <?php wats_render_nav( 'wats-settings' ); ?>
        <div class="wats-stats-bar">
            <div class="wats-stat-card"><span class="wats-stat-label">Total Messages Sent</span><span class="wats-stat-value"><?php echo esc_html($total_sent); ?></span></div>
            <div class="wats-stat-card"><span class="wats-stat-label">Active Default Template</span><span class="wats-stat-value wats-stat-small"><?php echo $selected !== '' ? esc_html( $selected ) : '—'; ?></span></div>
            <div class="wats-stat-card wats-stat-range">
                <span class="wats-stat-label">Messages in Range</span>
                <form id="wats-inline-range" method="post" class="wats-range-form">
                    <input type="date" id="wats_from" name="wats_from" max="<?php echo esc_attr( $today_iso ); ?>" value="<?php echo esc_attr( $today_iso ); ?>">
                    <span class="wats-range-sep">→</span><input type="date" id="wats_to" name="wats_to" max="<?php echo esc_attr( $today_iso ); ?>" value="<?php echo esc_attr( $today_iso ); ?>">
                    <strong id="wats_range_count" class="wats-range-count">0</strong>
                </form>
            </div>
        </div>
        <form method="post" action="options.php">
            <?php settings_fields( 'wats_settings_group' ); ?>
            <div class="wats-card">
                <h2 class="wats-card-title">API Configuration</h2>
                <table class="form-table">
                    <tr><th>API Key</th><td><input name="wats_api_key" type="text" class="regular-text" value="<?php echo esc_attr( wats_get_api_key() ); ?>"></td></tr>
                    <tr><th>Phone ID</th><td><input name="wats_phone_number_id" type="text" class="regular-text" value="<?php echo esc_attr( wats_get_phone_number_id() ); ?>"></td></tr>
                </table>
                <?php submit_button('Save Changes', 'primary wats-btn-primary'); ?>
            </div>
        </form>
    </div>
    <?php
}

function wats_render_automation_page() {
    $templates = get_transient( 'wats_templates_cache' ) ?: wats_fetch_templates(); $events = wats_get_events(); unset($events['offer_campaign']);
    $delay_labels = array( 'welcome' => 'Welcome Delay', 'add_to_cart' => 'Cart Reminder Timer', 'abandoned_cart' => 'Abandoned Delay', 'feedback_request' => 'Feedback Delay', 'reorder_reminder' => 'Reorder Reminder Interval' );
    ?>
    <div class="wrap wats-wrap">
        <div class="wats-header"><span class="dashicons dashicons-whatsapp wats-header-icon"></span><h1>Admark CRM</h1><span class="wats-version">v<?php echo esc_html(wats_get_plugin_version()); ?></span></div>
        <?php wats_render_nav( 'wats-automation' ); ?>

        <div class="wats-card wats-campaign-card" style="border-left: 4px solid #25D366; background: #ffffff;">
            <div style="display:flex; align-items:center; gap:10px; margin-bottom:15px;"><span class="dashicons dashicons-megaphone" style="font-size:24px; color:#25D366;"></span><h2 style="margin:0; font-size:18px;">Offer & Festival Campaign Hub</h2></div>
            <p style="color:#666; margin-bottom:20px;">Load your entire customer list, select a template profile, map your custom variables, and broadcast messages instantly to your chosen audience.</p>
            <table class="form-table">
                <tr><th>1. Target Customers</th><td><button type="button" class="button" id="wats_select_customers">👥 Fetch & Select Customers</button><input type="hidden" id="wats_campaign_customers" value=""><span id="wats_selected_cust_count" style="margin-left:12px; font-weight:600; color:#25D366;">0 Customers Selected</span></td></tr>
                <tr><th>2. Campaign Template</th><td><select id="wats_campaign_template" class="wats-tpl-select" data-event-key="offer_campaign"><option value="">— Select Template —</option><?php foreach($templates as $t){ echo '<option value="'.esc_attr($t).'">'.esc_html($t).'</option>'; } ?></select><input type="hidden" class="wats-varcount-input" id="wats_campaign_varcount" value="0"><div class="wats-var-map-container" id="wats_campaign_vars_container"></div></td></tr>
            </table>
            <button type="button" class="button button-primary wats-btn-primary" id="wats_trigger_campaign" style="margin-top:10px;">🚀 Bulk Message Broadcast</button>
        </div>

        <div class="wats-card wats-flow-diagram">
            <h2 class="wats-card-title">Automation Flow</h2>
            <div class="wats-flow">
                <div class="wats-flow-step">🌐 Visit</div><div class="wats-flow-arrow">→</div><div class="wats-flow-step">🛒 Cart</div><div class="wats-flow-arrow">→</div><div class="wats-flow-step">⏰ Abandoned</div><div class="wats-flow-arrow">→</div><div class="wats-flow-step">✅ Order</div><div class="wats-flow-arrow">→</div><div class="wats-flow-step">💳 Payment</div><div class="wats-flow-arrow">→</div><div class="wats-flow-step">🚚 Dispatch</div><div class="wats-flow-arrow">→</div><div class="wats-flow-step">📦 Delivered</div><div class="wats-flow-arrow">→</div><div class="wats-flow-step">⭐ Feedback</div>
            </div>
        </div>

        <form method="post" action="options.php">
            <?php settings_fields( 'wats_automation_group' ); ?>
            <?php foreach ( $events as $ek => $ev ) : 
                $enabled = wats_get_event_enabled($ek); $cur_tpl = wats_get_event_template($ek); ?>
                <div class="wats-card wats-automation-card <?php echo $enabled ? 'wats-event-enabled' : ''; ?>" data-event-key="<?php echo esc_attr($ek); ?>">
                    <div class="wats-automation-header" style="display:flex; align-items:center; width:100%;">
                        <label class="wats-toggle"><input type="checkbox" name="wats_enable_<?php echo esc_attr($ek); ?>" value="1" <?php checked($enabled); ?>><span class="wats-toggle-slider"></span></label>
                        <div style="margin-left:15px; flex-grow:1;"><h3><?php echo esc_html($ev['label']); ?></h3><p style="margin:2px 0 0; color:#666; font-size:13px;"><?php echo esc_html($ev['description']); ?></p></div>
                        
                        <?php if ( isset( $delay_labels[ $ek ] ) ) : 
                            $del_val  = (int) get_option( 'wats_delay_val_'  . $ek, 0 ); $del_unit = (string) get_option( 'wats_delay_unit_' . $ek, 'minutes' );
                        ?>
                        <div class="wats-delay-control-block" style="text-align:right; min-width:180px;">
                            <span style="font-size:11px; font-weight:600; text-transform:uppercase; color:#888; display:block; margin-bottom:4px;"><?php echo esc_html($delay_labels[$ek]); ?></span>
                            <input type="number" name="wats_delay_val_<?php echo esc_attr($ek); ?>" value="<?php echo esc_attr($del_val); ?>" min="0" style="width:60px; padding:4px; text-align:center; border:1px solid #ccc; border-radius:4px;">
                            <select name="wats_delay_unit_<?php echo esc_attr($ek); ?>" style="padding:4px; border:1px solid #ccc; border-radius:4px;">
                                <option value="minutes" <?php selected( $del_unit, 'minutes' ); ?>>Min</option>
                                <option value="hours"   <?php selected( $del_unit, 'hours' ); ?>>Hours</option>
                                <option value="days"    <?php selected( $del_unit, 'days' ); ?>>Days</option>
                                <?php if($ek === 'reorder_reminder') echo '<option value="months" '.selected($del_unit, 'months', false).'>Months</option>'; ?>
                            </select>
                        </div>
                        <?php endif; ?>
                    </div>
                    <div class="wats-automation-body" style="margin-top:15px; padding-left:60px;">
                        <div style="margin-bottom:8px; font-size:12px; color:#555; background:#f0f0f1; padding:4px 8px; border-radius:4px;"><strong>Sample Structure placeholders:</strong> <?php echo esc_html($ev['placeholders']); ?></div>
                        <select name="wats_tpl_<?php echo esc_attr($ek); ?>" class="wats-tpl-select" data-event-key="<?php echo esc_attr($ek); ?>"><option value="">— Select template —</option><?php foreach($templates as $t){ $s=($t==$cur_tpl)?'selected':''; echo '<option value="'.esc_attr($t).'" '.$s.'>'.esc_html($t).'</option>'; } ?></select>
                        <input type="hidden" name="wats_varcount_<?php echo esc_attr($ek); ?>" class="wats-varcount-input" value="<?php echo esc_attr((int)get_option('wats_varcount_'.$ek, $ev['var_count'])); ?>">
                        <div class="wats-var-map-container"></div>
                    </div>
                </div>
            <?php endforeach; ?>
            <?php submit_button('Save Automation Settings', 'primary wats-btn-primary'); ?>
        </form>
    </div>

    <div id="wats_customer_modal" class="wats-modal" style="display:none; position:fixed; z-index:999999 !important; left:0; top:0; width:100%; height:100%; background:rgba(0,0,0,0.6); overflow:auto;">
        <div class="wats-modal-content" style="background:#fff; margin:8% auto; padding:22px; border:1px solid #ccc; width:90%; max-width:650px; border-radius:10px; box-shadow:0 4px 20px rgba(0,0,0,0.3);">
            <div class="wats-modal-header" style="display:flex; justify-content:space-between; align-items:center; border-bottom:1px solid #ddd; padding-bottom:8px; margin-bottom:15px;"><h3 style="margin:0; font-size:16px;">Customer Selection List</h3><span class="wats-modal-close" style="font-size:28px; font-weight:bold; cursor:pointer; color:#aaa;">&times;</span></div>
            <div class="wats-modal-body" style="min-height:150px;"></div>
        </div>
    </div>
    <?php
}

function wats_render_message_logs_page() {
    $logs = array_reverse((array)get_option('wats_send_log', array()));
    ?>
    <div class="wrap wats-wrap">
        <div class="wats-header"><span class="dashicons dashicons-whatsapp wats-header-icon"></span><h1>Admark CRM</h1><span class="wats-version">v<?php echo esc_html(wats_get_plugin_version()); ?></span></div>
        <?php wats_render_nav( 'wats-message-logs' ); ?>
        <div class="wats-card">
            <h2 class="wats-card-title">Message Dispatch Logs (History)</h2>
            <table class="wp-list-table widefat fixed striped posts" style="margin-top:15px;">
                <thead><tr><th>Timestamp</th><th>Trigger Event</th><th>Recipient</th><th>Template</th></tr></thead>
                <tbody>
                    <?php if ( empty($logs) ) : ?>
                        <tr><td colspan="4" style="text-align:center; padding:20px; color:#999;">No delivery history logs stored.</td></tr>
                    <?php else : ?>
                        <?php foreach ( $logs as $log ) : ?>
                            <tr><td><?php echo esc_html($log['local'] ?? '—'); ?></td><td><span class="badge" style="background:#e4f5eb; color:#155724; padding:3px 8px; border-radius:4px; font-size:11px; font-weight:600; text-transform:uppercase;"><?php echo esc_html(str_replace('_', ' ', $log['event'] ?? 'campaign')); ?></span></td><td><code><?php echo esc_html($log['recipient'] ?? '—'); ?></code></td><td><strong><?php echo esc_html($log['template'] ?? '—'); ?></strong></td></tr>
                        <?php endforeach; ?>
                    <?php endif; ?>
                </tbody>
            </table>
        </div>
    </div>
    <?php
}

// ==== MAIN AJAX BULK DISPATCH PROCESSOR ====
add_action( 'wp_ajax_wats_send_campaign_bulk', function() {
    check_ajax_referer( 'wats_ajax_nonce', 'nonce' );
    if ( ! current_user_can( 'manage_options' ) ) { wp_send_json_error( 'Unauthorized', 403 ); }

    $template      = isset( $_POST['template'] ) ? sanitize_text_field( $_POST['template'] ) : '';
    $customers_raw = isset( $_POST['customers'] ) ? sanitize_text_field( $_POST['customers'] ) : '';
    $varmaps       = isset( $_POST['varmaps'] ) ? json_decode( wp_unslash( $_POST['varmaps'] ), true ) : array();

    if ( empty( $template ) || empty( $customers_raw ) ) { wp_send_json_error( 'Please select both target customers and template.' ); }

    $id_array = array();
    if ( $customers_raw === 'all_market_users' ) {
        $all_users = get_users( array( 'fields' => array( 'ID' ), 'number' => 15000 ) );
        foreach ( $all_users as $u ) { $id_array[] = $u->ID; }
    } else {
        $id_array = explode( ',', $customers_raw );
    }

    $success_count = 0; $log = get_option( 'wats_send_log', array() );
    if ( is_array( $id_array ) && ! empty( $id_array ) ) {
        foreach ( $id_array as $uid ) {
            $user = get_userdata( intval( $uid ) ); if ( ! $user ) { continue; }
            $phone = get_user_meta( $user->ID, 'billing_phone', true ); if ( empty( $phone ) ) { continue; } 

            $csv_resolved = array();
            if ( is_array( $varmaps ) ) {
                foreach ( $varmaps as $slot => $key_field ) {
                    $csv_resolved[] = ! empty( $key_field ) ? wats_resolve_var( $key_field, null, $user ) : '';
                }
            }
            $csv_string = implode( ',', array_map( 'rawurlencode', $csv_resolved ) );
            $response = wp_remote_get( wats_build_url( array( 'templateName' => $template, 'phoneNumber' => wats_normalize_phone( $phone ), 'csvVariables' => $csv_string ) ), array( 'timeout' => 15 ) );
            if ( ! is_wp_error( $response ) && wp_remote_retrieve_response_code( $response ) == 200 ) { 
                $success_count++;
                $log[] = array( 'local' => current_time( 'mysql' ), 'utc' => time(), 'event' => 'campaign_direct', 'recipient' => wats_normalize_phone( $phone ), 'template' => $template );
            }
        }
    }

    if ( $success_count > 0 ) {
        update_option( 'wats_send_count', (int) get_option( 'wats_send_count', 0 ) + $success_count, false );
        update_option( 'wats_send_log', $log, false );
        wp_send_json_success( $success_count . ' messages have been broadcasted and triggered immediately!' );
    } else {
        wp_send_json_error( 'Failed to send messages. Please verify template connectivity configurations.' );
    }
} );

function wats_render_message_templates_page() {
    $events = wats_get_events();
    ?>
    <div class="wrap wats-wrap">
        <div class="wats-header"><span class="dashicons dashicons-whatsapp wats-header-icon"></span><h1>Admark CRM</h1><span class="wats-version">v2.0.0</span></div>
        <?php wats_render_nav( 'wats-message-templates' ); ?>
        <div class="wats-card">
            <h2 class="wats-card-title">Sample Message Templates</h2>
            <div class="wats-templates-grid">
                <?php foreach ( $events as $ek => $ev ) : ?>
                <div class="wats-template-card">
                    <div class="wats-template-card-header"><h3><?php echo esc_html( $ev['label'] ); ?></h3><span><?php echo esc_html( $ev['placeholders'] ); ?></span></div>
                    <div class="wats-whatsapp-bubble"><?php echo nl2br( esc_html( $ev['sample'] ) ); ?></div>
                </div>
                <?php endforeach; ?>
            </div>
        </div>
    </div>
    <?php
}