<?php
/*
Plugin Name: CloudPrime Chatbot (Enhanced) - WHMCS & Gemini Integration
Description: Advanced AI chatbot for cloudprime.co.za with WHMCS integration and multiple AI providers.
Version: 3.0.4
Author: CloudPrime Connect
*/

if (!defined('ABSPATH')) exit;

// Add debug logging function
function cloudprime_debug_log($message) {
    if (defined('WP_DEBUG') && WP_DEBUG) {
        error_log('CloudPrime Chatbot Debug: ' . $message);
    }
}

// Create database tables on activation
register_activation_hook(__FILE__, 'cloudprime_chatbot_create_tables');
function cloudprime_chatbot_create_tables() {
    global $wpdb;
    
    // Chat logs table
    $table_name = $wpdb->prefix . 'cloudprime_chat_logs';
    $charset_collate = $wpdb->get_charset_collate();

    $sql = "CREATE TABLE $table_name (
        id mediumint(9) NOT NULL AUTO_INCREMENT,
        session_id varchar(32) NOT NULL,
        user_message text NOT NULL,
        ai_response text NOT NULL,
        contact_info text DEFAULT NULL,
        whmcs_client_id int DEFAULT NULL,
        ai_provider varchar(20) DEFAULT 'openrouter',
        created_at datetime DEFAULT CURRENT_TIMESTAMP,
        PRIMARY KEY  (id)
    ) $charset_collate;";

    require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
    dbDelta($sql);
    
    // Contacts table
    $table_name = $wpdb->prefix . 'cloudprime_contacts';
    $sql = "CREATE TABLE $table_name (
        id mediumint(9) NOT NULL AUTO_INCREMENT,
        session_id varchar(32) NOT NULL,
        name varchar(255) NOT NULL,
        phone varchar(50) NOT NULL,
        email varchar(255) DEFAULT NULL,
        whmcs_client_id int DEFAULT NULL,
        source varchar(50) DEFAULT 'chatbot',
        created_at datetime DEFAULT CURRENT_TIMESTAMP,
        PRIMARY KEY  (id)
    ) $charset_collate;";

    dbDelta($sql);
    cloudprime_debug_log('Enhanced tables created with WHMCS integration');
}

// Admin menu
add_action('admin_menu', function() {
    add_menu_page(
        'CloudPrime Chatbot',
        'CloudPrime Chatbot',
        'manage_options',
        'cloudprime-chatbot',
        'cloudprime_chatbot_admin_page_content',
        'dashicons-format-chat',
        6
    );
    
    add_submenu_page(
        'cloudprime-chatbot',
        'Chat Logs',
        'Chat Logs',
        'manage_options',
        'cloudprime-chat-logs',
        'cloudprime_chatbot_logs_page'
    );
    
    add_submenu_page(
        'cloudprime-chatbot',
        'Contacts',
        'Contacts',
        'manage_options',
        'cloudprime-contacts',
        'cloudprime_chatbot_contacts_page'
    );
    
    add_submenu_page(
        'cloudprime-chatbot',
        'WHMCS Settings',
        'WHMCS Settings',
        'manage_options',
        'cloudprime-whmcs',
        'cloudprime_whmcs_settings_page'
    );
});

function cloudprime_chatbot_admin_page_content() {
    // Handle form submission
    if (isset($_POST['submit'])) {
        $settings = [
            'ai_provider' => sanitize_text_field($_POST['ai_provider'] ?? 'openrouter'),
            'openrouter_api_key' => sanitize_text_field($_POST['openrouter_api_key'] ?? ''),
            'gemini_api_key' => sanitize_text_field($_POST['gemini_api_key'] ?? ''),
            'whatsapp_number' => sanitize_text_field($_POST['whatsapp_number'] ?? ''),
            'ai_name' => sanitize_text_field($_POST['ai_name'] ?? 'CloudPrime Assistant'),
            'ai_avatar_url' => esc_url_raw($_POST['ai_avatar_url'] ?? ''),
            'predefined_questions_setting' => sanitize_textarea_field($_POST['predefined_questions_setting'] ?? ''),
            'enable_conditional_whatsapp' => isset($_POST['enable_conditional_whatsapp']) ? 1 : 0,
            'notification_email' => sanitize_email($_POST['notification_email'] ?? get_option('admin_email')),
            'enable_whmcs_integration' => isset($_POST['enable_whmcs_integration']) ? 1 : 0,
            'enable_voice_commands' => isset($_POST['enable_voice_commands']) ? 1 : 0
        ];
        
        update_option('cloudprime_chatbot_settings', $settings);
        echo '<div class="notice notice-success"><p>Settings saved successfully!</p></div>';
    }
    
    $opts = get_option('cloudprime_chatbot_settings', []);
    ?>
    <div class="wrap">
        <h1>CloudPrime Chatbot Settings</h1>
        
        <!-- Debug Section -->
        <div class="notice notice-info">
            <h3>Debug Information</h3>
            <p><strong>Plugin Status:</strong> 
                <?php 
                $provider = $opts['ai_provider'] ?? 'openrouter';
                $key_field = $provider === 'gemini' ? 'gemini_api_key' : 'openrouter_api_key';
                echo empty($opts[$key_field]) ? '<span style="color: red;">Not configured (API key missing)</span>' : '<span style="color: green;">Configured (' . $provider . ')</span>'; 
                ?>
            </p>
            <p><strong>WHMCS Integration:</strong> 
                <?php echo !empty($opts['enable_whmcs_integration']) ? '<span style="color: green;">Enabled</span>' : '<span style="color: orange;">Disabled</span>'; ?>
            </p>
            <p><strong>Voice Commands:</strong> 
                <?php echo !empty($opts['enable_voice_commands']) ? '<span style="color: green;">Enabled</span>' : '<span style="color: orange;">Disabled</span>'; ?>
            </p>
            <p><strong>Current Theme:</strong> <?php echo get_template(); ?></p>
        </div>
        
        <form method="post" action="">
            <table class="form-table">
                <tr>
                    <th scope="row">AI Provider</th>
                    <td>
                        <select name="ai_provider" id="ai_provider" onchange="toggleApiKeys()">
                            <option value="openrouter" <?php selected($opts['ai_provider'] ?? 'openrouter', 'openrouter'); ?>>OpenRouter</option>
                            <option value="gemini" <?php selected($opts['ai_provider'] ?? 'openrouter', 'gemini'); ?>>Google Gemini</option>
                        </select>
                        <p class="description">Choose your preferred AI provider.</p>
                    </td>
                </tr>
                <tr id="openrouter_key_row">
                    <th scope="row">OpenRouter API Key</th>
                    <td>
                        <input type="password" name="openrouter_api_key" value="<?php echo esc_attr($opts['openrouter_api_key'] ?? ''); ?>" style="width:400px">
                        <p class="description">Get a key from <a href="https://openrouter.ai/" target="_blank">openrouter.ai</a></p>
                    </td>
                </tr>
                <tr id="gemini_key_row">
                    <th scope="row">Google Gemini API Key</th>
                    <td>
                        <input type="password" name="gemini_api_key" value="<?php echo esc_attr($opts['gemini_api_key'] ?? ''); ?>" style="width:400px">
                        <p class="description">Get a key from <a href="https://ai.google.dev/" target="_blank">Google AI Studio</a></p>
                    </td>
                </tr>
                <tr>
                    <th scope="row">WhatsApp Number</th>
                    <td>
                        <input type="text" name="whatsapp_number" value="<?php echo esc_attr($opts['whatsapp_number'] ?? ''); ?>" style="width:400px">
                        <p class="description">Format: 27101108466 (no spaces or special chars)</p>
                    </td>
                </tr>
                <tr>
                    <th scope="row">AI Name</th>
                    <td>
                        <input type="text" name="ai_name" value="<?php echo esc_attr($opts['ai_name'] ?? 'CloudPrime Assistant'); ?>" style="width:400px">
                        <p class="description">The name displayed for the AI chatbot.</p>
                    </td>
                </tr>
                <tr>
                    <th scope="row">AI Avatar URL</th>
                    <td>
                        <input type="text" name="ai_avatar_url" value="<?php echo esc_attr($opts['ai_avatar_url'] ?? ''); ?>" style="width:400px">
                        <p class="description">URL to the AI's avatar image.</p>
                    </td>
                </tr>
                <tr>
                    <th scope="row">Predefined Questions</th>
                    <td>
                        <textarea name="predefined_questions_setting" rows="5" cols="50" style="width:400px"><?php echo esc_textarea($opts['predefined_questions_setting'] ?? "What IT services do you offer?\nDo you provide fibre installation?\nWhat's included in your managed IT services?\nHow can I contact support?"); ?></textarea>
                        <p class="description">Enter each question on a new line.</p>
                    </td>
                </tr>
                <tr>
                    <th scope="row">Enable Conditional WhatsApp Button</th>
                    <td>
                        <input type="checkbox" name="enable_conditional_whatsapp" value="1" <?php checked(1, $opts['enable_conditional_whatsapp'] ?? 0); ?>>
                        <p class="description">If enabled, the WhatsApp button will only appear when the AI cannot answer a question or when the client asks to speak to a human.</p>
                    </td>
                </tr>
                <tr>
                    <th scope="row">Enable Voice Commands</th>
                    <td>
                        <input type="checkbox" name="enable_voice_commands" value="1" <?php checked(1, $opts['enable_voice_commands'] ?? 0); ?>>
                        <p class="description">Enable voice recognition for hands-free interaction.</p>
                    </td>
                </tr>
                <tr>
                    <th scope="row">Enable WHMCS Integration</th>
                    <td>
                        <input type="checkbox" name="enable_whmcs_integration" value="1" <?php checked(1, $opts['enable_whmcs_integration'] ?? 0); ?>>
                        <p class="description">Enable integration with WHMCS for client support features.</p>
                    </td>
                </tr>
                <tr>
                    <th scope="row">Notification Email</th>
                    <td>
                        <input type="email" name="notification_email" value="<?php echo esc_attr($opts['notification_email'] ?? get_option('admin_email')); ?>" style="width:400px">
                        <p class="description">Email address to receive new contact notifications.</p>
                    </td>
                </tr>
            </table>
            <?php submit_button(); ?>
        </form>
        
        <script>
        function toggleApiKeys() {
            const provider = document.getElementById('ai_provider').value;
            const openrouterRow = document.getElementById('openrouter_key_row');
            const geminiRow = document.getElementById('gemini_key_row');
            
            if (provider === 'gemini') {
                openrouterRow.style.display = 'none';
                geminiRow.style.display = 'table-row';
            } else {
                openrouterRow.style.display = 'table-row';
                geminiRow.style.display = 'none';
            }
        }
        // Initialize on page load
        toggleApiKeys();
        </script>
    </div>
    <?php
}

function cloudprime_whmcs_settings_page() {
    if (isset($_POST['submit'])) {
        $whmcs_settings = [
            'whmcs_url' => esc_url_raw($_POST['whmcs_url'] ?? ''),
            'whmcs_api_identifier' => sanitize_text_field($_POST['whmcs_api_identifier'] ?? ''),
            'whmcs_api_secret' => sanitize_text_field($_POST['whmcs_api_secret'] ?? ''),
            'whmcs_db_host' => sanitize_text_field($_POST['whmcs_db_host'] ?? ''),
            'whmcs_db_name' => sanitize_text_field($_POST['whmcs_db_name'] ?? ''),
            'whmcs_db_user' => sanitize_text_field($_POST['whmcs_db_user'] ?? ''),
            'whmcs_db_pass' => sanitize_text_field($_POST['whmcs_db_pass'] ?? ''),
            'whmcs_integration_method' => sanitize_text_field($_POST['whmcs_integration_method'] ?? 'api')
        ];
        
        update_option('cloudprime_whmcs_settings', $whmcs_settings);
        echo '<div class="notice notice-success"><p>WHMCS settings saved successfully!</p></div>';
    }
    
    $whmcs_opts = get_option('cloudprime_whmcs_settings', []);
    ?>
    <div class="wrap">
        <h1>WHMCS Integration Settings</h1>
        
        <form method="post" action="">
            <table class="form-table">
                <tr>
                    <th scope="row">Integration Method</th>
                    <td>
                        <select name="whmcs_integration_method" id="whmcs_method" onchange="toggleWhmcsFields()">
                            <option value="api" <?php selected($whmcs_opts['whmcs_integration_method'] ?? 'api', 'api'); ?>>API (Recommended)</option>
                            <option value="database" <?php selected($whmcs_opts['whmcs_integration_method'] ?? 'api', 'database'); ?>>Direct Database</option>
                        </select>
                        <p class="description">Choose how to connect to WHMCS.</p>
                    </td>
                </tr>
                
                <tbody id="api_fields">
                    <tr>
                        <th scope="row">WHMCS URL</th>
                        <td>
                            <input type="url" name="whmcs_url" value="<?php echo esc_attr($whmcs_opts['whmcs_url'] ?? ''); ?>" style="width:400px">
                            <p class="description">Your WHMCS installation URL (e.g., https://billing.cloudprime.co.za)</p>
                        </td>
                    </tr>
                    <tr>
                        <th scope="row">API Identifier</th>
                        <td>
                            <input type="text" name="whmcs_api_identifier" value="<?php echo esc_attr($whmcs_opts['whmcs_api_identifier'] ?? ''); ?>" style="width:400px">
                            <p class="description">WHMCS API Identifier from Setup > General Settings > Security</p>
                        </td>
                    </tr>
                    <tr>
                        <th scope="row">API Secret</th>
                        <td>
                            <input type="password" name="whmcs_api_secret" value="<?php echo esc_attr($whmcs_opts['whmcs_api_secret'] ?? ''); ?>" style="width:400px">
                            <p class="description">WHMCS API Secret</p>
                        </td>
                    </tr>
                </tbody>
                
                <tbody id="db_fields">
                    <tr>
                        <th scope="row">Database Host</th>
                        <td>
                            <input type="text" name="whmcs_db_host" value="<?php echo esc_attr($whmcs_opts['whmcs_db_host'] ?? ''); ?>" style="width:400px">
                            <p class="description">WHMCS database host (usually localhost)</p>
                        </td>
                    </tr>
                    <tr>
                        <th scope="row">Database Name</th>
                        <td>
                            <input type="text" name="whmcs_db_name" value="<?php echo esc_attr($whmcs_opts['whmcs_db_name'] ?? ''); ?>" style="width:400px">
                            <p class="description">WHMCS database name</p>
                        </td>
                    </tr>
                    <tr>
                        <th scope="row">Database Username</th>
                        <td>
                            <input type="text" name="whmcs_db_user" value="<?php echo esc_attr($whmcs_opts['whmcs_db_user'] ?? ''); ?>" style="width:400px">
                            <p class="description">WHMCS database username</p>
                        </td>
                    </tr>
                    <tr>
                        <th scope="row">Database Password</th>
                        <td>
                            <input type="password" name="whmcs_db_pass" value="<?php echo esc_attr($whmcs_opts['whmcs_db_pass'] ?? ''); ?>" style="width:400px">
                            <p class="description">WHMCS database password</p>
                        </td>
                    </tr>
                </tbody>
            </table>
            <?php submit_button(); ?>
        </form>
        
        <script>
        function toggleWhmcsFields() {
            const method = document.getElementById('whmcs_method').value;
            const apiFields = document.getElementById('api_fields');
            const dbFields = document.getElementById('db_fields');
            
            if (method === 'database') {
                apiFields.style.display = 'none';
                dbFields.style.display = 'table-row-group';
            } else {
                apiFields.style.display = 'table-row-group';
                dbFields.style.display = 'none';
            }
        }
        // Initialize on page load
        toggleWhmcsFields();
        </script>
    </div>
    <?php
}

function cloudprime_chatbot_logs_page() {
    global $wpdb;
    $logs = $wpdb->get_results("SELECT * FROM {$wpdb->prefix}cloudprime_chat_logs ORDER BY created_at DESC LIMIT 100");
    ?>
    <div class="wrap">
        <h1>Chat Logs</h1>
        <table class="wp-list-table widefat fixed striped">
            <thead>
                <tr>
                    <th>Date</th>
                    <th>Session ID</th>
                    <th>User Message</th>
                    <th>AI Response</th>
                    <th>AI Provider</th>
                    <th>WHMCS Client</th>
                    <th>Contact Info</th>
                </tr>
            </thead>
            <tbody>
                <?php foreach ($logs as $log): ?>
                <tr>
                    <td><?php echo esc_html($log->created_at); ?></td>
                    <td><?php echo esc_html(substr($log->session_id, 0, 8)); ?>...</td>
                    <td><?php echo esc_html(wp_trim_words($log->user_message, 10)); ?></td>
                    <td><?php echo esc_html(wp_trim_words($log->ai_response, 15)); ?></td>
                    <td><?php echo esc_html($log->ai_provider ?? 'openrouter'); ?></td>
                    <td><?php echo $log->whmcs_client_id ? esc_html($log->whmcs_client_id) : '-'; ?></td>
                    <td><?php echo esc_html($log->contact_info); ?></td>
                </tr>
                <?php endforeach; ?>
            </tbody>
        </table>
    </div>
    <?php
}

function cloudprime_chatbot_contacts_page() {
    global $wpdb;
    $contacts = $wpdb->get_results("SELECT * FROM {$wpdb->prefix}cloudprime_contacts ORDER BY created_at DESC");
    ?>
    <div class="wrap">
        <h1>Contacts</h1>
        <table class="wp-list-table widefat fixed striped">
            <thead>
                <tr>
                    <th>Date</th>
                    <th>Name</th>
                    <th>Phone</th>
                    <th>Email</th>
                    <th>WHMCS Client ID</th>
                    <th>Source</th>
                </tr>
            </thead>
            <tbody>
                <?php foreach ($contacts as $contact): ?>
                <tr>
                    <td><?php echo esc_html($contact->created_at); ?></td>
                    <td><?php echo esc_html($contact->name); ?></td>
                    <td><?php echo esc_html($contact->phone); ?></td>
                    <td><?php echo esc_html($contact->email); ?></td>
                    <td><?php echo $contact->whmcs_client_id ? esc_html($contact->whmcs_client_id) : '-'; ?></td>
                    <td><?php echo esc_html($contact->source); ?></td>
                </tr>
                <?php endforeach; ?>
            </tbody>
        </table>
    </div>
    <?php
}

// WHMCS Integration Functions
function cloudprime_get_whmcs_client_by_email($email) {
    $whmcs_opts = get_option('cloudprime_whmcs_settings', []);
    $method = $whmcs_opts['whmcs_integration_method'] ?? 'api';
    
    if ($method === 'api') {
        return cloudprime_whmcs_api_get_client($email);
    } else {
        return cloudprime_whmcs_db_get_client($email);
    }
}

function cloudprime_whmcs_api_get_client($email) {
    $whmcs_opts = get_option('cloudprime_whmcs_settings', []);
    $url = $whmcs_opts['whmcs_url'] ?? '';
    $identifier = $whmcs_opts['whmcs_api_identifier'] ?? '';
    $secret = $whmcs_opts['whmcs_api_secret'] ?? '';
    
    if (empty($url) || empty($identifier) || empty($secret)) {
        return null;
    }
    
    $postdata = [
        'action' => 'GetClientsDetails',
        'email' => $email,
        'identifier' => $identifier,
        'secret' => $secret,
        'responsetype' => 'json'
    ];
    
    $response = wp_remote_post($url . '/includes/api.php', [
        'body' => $postdata,
        'timeout' => 10
    ]);
    
    if (is_wp_error($response)) {
        cloudprime_debug_log('WHMCS API Error: ' . $response->get_error_message());
        return null;
    }
    
    $result = json_decode(wp_remote_retrieve_body($response), true);
    
    if (isset($result['result']) && $result['result'] === 'success') {
        return $result;
    }
    
    return null;
}

function cloudprime_whmcs_db_get_client($email) {
    $whmcs_opts = get_option('cloudprime_whmcs_settings', []);
    $host = $whmcs_opts['whmcs_db_host'] ?? '';
    $dbname = $whmcs_opts['whmcs_db_name'] ?? '';
    $username = $whmcs_opts['whmcs_db_user'] ?? '';
    $password = $whmcs_opts['whmcs_db_pass'] ?? '';
    
    if (empty($host) || empty($dbname) || empty($username)) {
        return null;
    }
    
    try {
        $whmcs_db = new PDO("mysql:host=$host;dbname=$dbname", $username, $password);
        $whmcs_db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
        
        $stmt = $whmcs_db->prepare("SELECT * FROM tblclients WHERE email = ?");
        $stmt->execute([$email]);
        $client = $stmt->fetch(PDO::FETCH_ASSOC);
        
        if ($client) {
            // Get recent invoices
            $stmt = $whmcs_db->prepare("SELECT * FROM tblinvoices WHERE userid = ? ORDER BY id DESC LIMIT 5");
            $stmt->execute([$client['id']]);
            $invoices = $stmt->fetchAll(PDO::FETCH_ASSOC);
            
            // Get recent tickets
            $stmt = $whmcs_db->prepare("SELECT * FROM tbltickets WHERE userid = ? ORDER BY id DESC LIMIT 5");
            $stmt->execute([$client['id']]);
            $tickets = $stmt->fetchAll(PDO::FETCH_ASSOC);
            
            return [
                'client' => $client,
                'invoices' => $invoices,
                'tickets' => $tickets
            ];
        }
    } catch (PDOException $e) {
        cloudprime_debug_log('WHMCS DB Error: ' . $e->getMessage());
    }
    
    return null;
}

// Enhanced AI Chat Function
function cloudprime_get_ai_response($prompt, $client_data = null, $provider = 'openrouter') {
    $opt = get_option('cloudprime_chatbot_settings');
    
    if ($provider === 'gemini') {
        return cloudprime_get_gemini_response($prompt, $client_data, $opt);
    } else {
        return cloudprime_get_openrouter_response($prompt, $client_data, $opt);
    }
}

function cloudprime_get_gemini_response($prompt, $client_data, $opt) {
    $api_key = $opt['gemini_api_key'] ?? '';
    if (empty($api_key)) {
        return ['error' => 'Gemini API key not configured'];
    }
    
    $sys_prompt = cloudprime_build_system_prompt($client_data);
    
    $body = json_encode([
        'contents' => [
            [
                'parts' => [
                    ['text' => $sys_prompt . "\n\nUser: " . $prompt]
                ]
            ]
        ],
        'generationConfig' => [
            'temperature' => 0.7,
            'maxOutputTokens' => 300
        ]
    ]);
    
    $response = wp_remote_post("https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash-latest:generateContent?key=" . $api_key, [
        'headers' => [
            'Content-Type' => 'application/json'
        ],
        'body' => $body,
        'timeout' => 20
    ]);
    
    if (is_wp_error($response)) {
        return ['error' => $response->get_error_message()];
    }
    
    $result = json_decode(wp_remote_retrieve_body($response), true);
    
    if (isset($result['candidates'][0]['content']['parts'][0]['text'])) {
        return ['reply' => $result['candidates'][0]['content']['parts'][0]['text']];
    }
    
    return ['error' => 'Invalid Gemini API response'];
}

function cloudprime_get_openrouter_response($prompt, $client_data, $opt) {
    $api_key = $opt['openrouter_api_key'] ?? '';
    if (empty($api_key)) {
        return ['error' => 'OpenRouter API key not configured'];
    }
    
    $sys_prompt = cloudprime_build_system_prompt($client_data);
    
    $body = json_encode([
        "model" => "openrouter/auto",
        "max_tokens" => 300,
        "temperature" => 0.7,
        "messages" => [
            ["role" => "system", "content" => $sys_prompt],
            ["role" => "user", "content" => $prompt]
        ]
    ]);

    $response = wp_remote_post("https://openrouter.ai/api/v1/chat/completions", [
        "headers" => [
            "Authorization" => "Bearer $api_key",
            "Content-Type" => "application/json"
        ],
        "body" => $body,
        "timeout" => 20
    ]);

    if (is_wp_error($response)) {
        return ['error' => $response->get_error_message()];
    }
    
    $result = json_decode(wp_remote_retrieve_body($response), true);
    
    if (isset($result['choices'][0]['message']['content'])) {
        return ['reply' => $result['choices'][0]['message']['content']];
    }
    
    return ['error' => 'Invalid OpenRouter API response'];
}

function cloudprime_build_system_prompt($client_data = null) {
    $base_prompt = "You are a helpful assistant for Cloud Prime Connect (cloudprime.co.za), an IT and telecom services provider based in Johannesburg, South Africa. 

CloudPrime offers:
- Managed IT services (24/7 monitoring, cybersecurity, helpdesk support)
- Fibre and LTE connectivity solutions
- Yeastar PBX and VoIP systems
- Hotspot installations and WiFi solutions
- Data management and IT consulting
- Cloud services and hosting
- Network security solutions

Contact information:
- Website: cloudprime.co.za/contact
- Phone: +27 10 110 8466
- Email: info@cloudprime.co.za";

    if ($client_data && isset($client_data['client'])) {
        $client = $client_data['client'];
        $base_prompt .= "\n\nCLIENT INFORMATION:\n";
        $base_prompt .= "- Client Name: " . $client['firstname'] . " " . $client['lastname'] . "\n";
        $base_prompt .= "- Email: " . $client['email'] . "\n";
        $base_prompt .= "- Client ID: " . $client['id'] . "\n";
        $base_prompt .= "- Status: " . $client['status'] . "\n";
        
        if (!empty($client_data['invoices'])) {
            $base_prompt .= "\nRECENT INVOICES:\n";
            foreach (array_slice($client_data['invoices'], 0, 3) as $invoice) {
                $base_prompt .= "- Invoice #" . $invoice['invoicenum'] . " - " . $invoice['status'] . " - R" . $invoice['total'] . "\n";
            }
        }
        
        if (!empty($client_data['tickets'])) {
            $base_prompt .= "\nRECENT SUPPORT TICKETS:\n";
            foreach (array_slice($client_data['tickets'], 0, 3) as $ticket) {
                $base_prompt .= "- Ticket #" . $ticket['tid'] . " - " . $ticket['subject'] . " - " . $ticket['status'] . "\n";
            }
        }
        
        $base_prompt .= "\nYou can reference this client information when helping them with their inquiries.";
    }
    
    $base_prompt .= "\n\nBe helpful, professional, and if you cannot answer a question or if they need human assistance, suggest they contact CloudPrime directly or ask to speak to a human agent.";
    
    return $base_prompt;
}

// AJAX handlers
add_action('wp_ajax_cloudprime_chat', 'cloudprime_handle_chat_ajax');
add_action('wp_ajax_nopriv_cloudprime_chat', 'cloudprime_handle_chat_ajax');

function cloudprime_handle_chat_ajax() {
    check_ajax_referer('cloudprime_chat_nonce', 'nonce');
    
    $message = sanitize_text_field($_POST['message']);
    $session_id = sanitize_text_field($_POST['session_id']);
    $email = sanitize_email($_POST['email'] ?? '');
    
    $opts = get_option('cloudprime_chatbot_settings');
    $provider = $opts['ai_provider'] ?? 'openrouter';
    
    // Get client data if email provided and WHMCS integration is enabled
    $client_data = null;
    $whmcs_client_id = null;
    
    if (!empty($email) && !empty($opts['enable_whmcs_integration'])) {
        $client_data = cloudprime_get_whmcs_client_by_email($email);
        if ($client_data && isset($client_data['client'])) {
            $whmcs_client_id = $client_data['client']['id'];
        }
    }
    
    // Get AI response
    $ai_response = cloudprime_get_ai_response($message, $client_data, $provider);
    
    if (isset($ai_response['error'])) {
        wp_send_json_error($ai_response['error']);
        return;
    }
    
    $response_text = $ai_response['reply'];
    
    // Log the conversation
    global $wpdb;
    $wpdb->insert(
        $wpdb->prefix . 'cloudprime_chat_logs',
        [
            'session_id' => $session_id,
            'user_message' => $message,
            'ai_response' => $response_text,
            'contact_info' => $email,
            'whmcs_client_id' => $whmcs_client_id,
            'ai_provider' => $provider,
            'created_at' => current_time('mysql')
        ]
    );
    
    // Check if we should show WhatsApp button
    $show_whatsapp = false;
    if (!empty($opts['enable_conditional_whatsapp'])) {
        $trigger_phrases = ['speak to human', 'human agent', 'contact support', 'call you', 'cannot help', 'don\'t know'];
        foreach ($trigger_phrases as $phrase) {
            if (stripos($response_text, $phrase) !== false || stripos($message, $phrase) !== false) {
                $show_whatsapp = true;
                break;
            }
        }
    }
    
    wp_send_json_success([
        'message' => $response_text,
        'show_whatsapp' => $show_whatsapp,
        'client_info' => $client_data ? [
            'name' => $client_data['client']['firstname'] . ' ' . $client_data['client']['lastname'],
            'client_id' => $client_data['client']['id'],
            'status' => $client_data['client']['status']
        ] : null
    ]);
}

// Save contact info
add_action('wp_ajax_cloudprime_save_contact', 'cloudprime_save_contact_ajax');
add_action('wp_ajax_nopriv_cloudprime_save_contact', 'cloudprime_save_contact_ajax');

function cloudprime_save_contact_ajax() {
    check_ajax_referer('cloudprime_chat_nonce', 'nonce');
    
    $name = sanitize_text_field($_POST['name']);
    $phone = sanitize_text_field($_POST['phone']);
    $email = sanitize_email($_POST['email']);
    $session_id = sanitize_text_field($_POST['session_id']);
    
    // Check if this is a WHMCS client
    $whmcs_client_id = null;
    $opts = get_option('cloudprime_chatbot_settings');
    
    if (!empty($opts['enable_whmcs_integration']) && !empty($email)) {
        $client_data = cloudprime_get_whmcs_client_by_email($email);
        if ($client_data && isset($client_data['client'])) {
            $whmcs_client_id = $client_data['client']['id'];
        }
    }
    
    global $wpdb;
    $result = $wpdb->insert(
        $wpdb->prefix . 'cloudprime_contacts',
        [
            'session_id' => $session_id,
            'name' => $name,
            'phone' => $phone,
            'email' => $email,
            'whmcs_client_id' => $whmcs_client_id,
            'source' => 'chatbot',
            'created_at' => current_time('mysql')
        ]
    );
    
    if ($result) {
        // Send notification email
        $notification_email = $opts['notification_email'] ?? get_option('admin_email');
        $subject = 'New Contact from CloudPrime Chatbot';
        $message = "New contact submitted via chatbot:\n\n";
        $message .= "Name: $name\n";
        $message .= "Phone: $phone\n";
        $message .= "Email: $email\n";
        if ($whmcs_client_id) {
            $message .= "WHMCS Client ID: $whmcs_client_id\n";
        }
        $message .= "Session ID: $session_id\n";
        $message .= "Date: " . current_time('mysql') . "\n";
        
        wp_mail($notification_email, $subject, $message);
        
        wp_send_json_success([
            'message' => 'Thank you! Your contact information has been saved.',
            'predefined_questions' => array_filter(explode("\n", $opts['predefined_questions_setting'] ?? ''))
        ]);
    } else {
        wp_send_json_error('Failed to save contact information');
    }
}

// Frontend chatbot display
add_action('wp_footer', 'cloudprime_chatbot_frontend');
function cloudprime_chatbot_frontend() {
    $opts = get_option('cloudprime_chatbot_settings');
    $provider = $opts['ai_provider'] ?? 'openrouter';
    
    // Check if API key is configured
    $api_key_field = $provider === 'gemini' ? 'gemini_api_key' : 'openrouter_api_key';
    if (empty($opts[$api_key_field])) {
        return; // Don't show chatbot if not configured
    }
    
    $ai_name = $opts['ai_name'] ?? 'CloudPrime Assistant';
    $ai_avatar = $opts['ai_avatar_url'] ?? '';
    $whatsapp_number = $opts['whatsapp_number'] ?? '';
    $predefined_questions = array_filter(explode("\n", $opts['predefined_questions_setting'] ?? ''));
    $enable_voice = !empty($opts['enable_voice_commands']);
    
    ?>
    <div id="cloudprime-chatbot" style="display: none;">
        <div id="chatbot-header">
            <div class="chatbot-avatar">
                <?php if ($ai_avatar): ?>
                    <img src="<?php echo esc_url($ai_avatar); ?>" alt="<?php echo esc_attr($ai_name); ?>">
                <?php else: ?>
                    <div class="avatar-placeholder">🤖</div>
                <?php endif; ?>
            </div>
            <div class="chatbot-info">
                <h3><?php echo esc_html($ai_name); ?></h3>
                <p>Online now</p>
            </div>
            <button id="chatbot-minimize">−</button>
        </div>
        
        <div id="chatbot-messages"></div>
        
        <div id="chatbot-input-area">
            <input type="text" id="chatbot-input" placeholder="Type your message...">
            <?php if ($enable_voice): ?>
                <button id="chatbot-voice" class="voice-button" title="Voice input"><span class="mic-icon">🎤</span></button>
            <?php endif; ?>
            <button id="chatbot-send">Send</button>
        </div>
    </div>
    
    <div id="chatbot-toggle">
        <div class="chat-icon">💬</div>
        <div class="notification-badge" style="display: none;">1</div>
    </div>
    
    <script>
    (function() {
        const chatbot = document.getElementById('cloudprime-chatbot');
        const toggle = document.getElementById('chatbot-toggle');
        const minimize = document.getElementById('chatbot-minimize');
        const messagesContainer = document.getElementById('chatbot-messages');
        const input = document.getElementById('chatbot-input');
        const sendBtn = document.getElementById('chatbot-send');
        const voiceBtn = document.getElementById('chatbot-voice');
        
        let isOpen = false;
        let sessionId = 'session_' + Date.now() + '_' + Math.random().toString(36).substr(2, 9);
        let userEmail = '';
        let messageCount = 0;
        let contactFormShown = false;
        let predefinedShown = false;
        let recognition = null;
        let listening = false;
        
        // Initialize voice recognition if available
        if (voiceBtn && (window.SpeechRecognition || window.webkitSpeechRecognition)) {
            const SpeechRecognition = window.SpeechRecognition || window.webkitSpeechRecognition;
            recognition = new SpeechRecognition();
            recognition.continuous = true;
            recognition.interimResults = false;
            recognition.lang = 'en-US';
            
            recognition.onresult = function(event) {
                input.value = event.results[event.results.length - 1][0].transcript;
            };
            
            recognition.onend = function() {
                listening = false;
                voiceBtn.classList.remove('listening');
            };
            
            recognition.onerror = function(event) {
                console.error('Speech recognition error', event.error);
                listening = false;
                voiceBtn.classList.remove('listening');
            };
            
            voiceBtn.addEventListener('click', function() {
                if (listening) {
                    recognition.stop();
                } else {
                    recognition.start();
                    listening = true;
                    voiceBtn.classList.add('listening');
                }
            });
        }
        
        // Event listeners
        toggle.addEventListener('click', toggleChat);
        minimize.addEventListener('click', toggleChat);
        sendBtn.addEventListener('click', sendMessage);
        input.addEventListener('keypress', function(e) {
            if (e.key === 'Enter') sendMessage();
        });
        
        function toggleChat() {
            isOpen = !isOpen;
            chatbot.style.display = isOpen ? 'flex' : 'none';
            
            if (isOpen && messagesContainer.children.length === 0) {
                showWelcomeMessage();
            }
        }
        
        function showWelcomeMessage() {
            addMessage('<?php echo esc_js($ai_name); ?>', 'Hello! I\'m here to help you with CloudPrime\'s IT and telecom services. How can I assist you today?', 'bot');
        }
        
        function sendMessage() {
            const message = input.value.trim();
            if (!message) return;
            
            messageCount++;
            addMessage('You', message, 'user');
            input.value = '';
            
            // Show contact form after first message if not already shown
            if (!contactFormShown && !userEmail) {
                showContactForm();
                return;
            }
            
            sendToAI(message);
        }
        
        function sendToAI(message) {
            // Show typing indicator
            const typingDiv = document.createElement('div');
            typingDiv.className = 'message bot typing';
            typingDiv.innerHTML = '<div class="message-content">Typing...</div>';
            messagesContainer.appendChild(typingDiv);
            scrollToBottom();
            
            // Check if message contains email
            const emailRegex = /\b[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Z|a-z]{2,}\b/;
            const emailMatch = message.match(emailRegex);
            if (emailMatch) {
                userEmail = emailMatch[0];
            }
            
            // Send to AI
            fetch('<?php echo admin_url('admin-ajax.php'); ?>', {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/x-www-form-urlencoded',
                },
                body: new URLSearchParams({
                    action: 'cloudprime_chat',
                    message: message,
                    session_id: sessionId,
                    email: userEmail,
                    nonce: '<?php echo wp_create_nonce('cloudprime_chat_nonce'); ?>'
                })
            })
            .then(response => response.json())
            .then(data => {
                // Remove typing indicator
                typingDiv.remove();
                
                if (data.success) {
                    addMessage('<?php echo esc_js($ai_name); ?>', data.data.message, 'bot');
                    
                    // Show client info if available
                    if (data.data.client_info) {
                        const clientInfo = `Welcome back, ${data.data.client_info.name}! (Client ID: ${data.data.client_info.client_id})`;
                        addMessage('System', clientInfo, 'system');
                    }
                    
                    // Show WhatsApp button if needed
                    if (data.data.show_whatsapp && '<?php echo esc_js($whatsapp_number); ?>') {
                        addWhatsAppButton();
                    }
                    
                    // Show predefined questions after contact is saved
                    if (!predefinedShown && data.data.predefined_questions && data.data.predefined_questions.length > 0) {
                        showPredefinedQuestions(data.data.predefined_questions);
                        predefinedShown = true;
                    }
                } else {
                    addMessage('System', 'Sorry, I encountered an error. Please try again.', 'error');
                }
            })
            .catch(error => {
                typingDiv.remove();
                addMessage('System', 'Connection error. Please try again.', 'error');
            });
        }
        
        function showContactForm() {
            contactFormShown = true;
            const formDiv = document.createElement('div');
            formDiv.className = 'message bot';
            formDiv.innerHTML = `
                <div class="message-sender"><?php echo esc_js($ai_name); ?></div>
                <div class="message-content">
                    <div class="contact-form">
                        <h4>Please provide your contact details</h4>
                        <input type="text" id="contact-name" placeholder="Your name" required>
                        <input type="email" id="contact-email" placeholder="Your email">
                        <input type="tel" id="contact-phone" placeholder="Your phone number" required>
                        <button id="save-contact" class="save-contact-btn">Submit</button>
                    </div>
                </div>
            `;
            messagesContainer.appendChild(formDiv);
            scrollToBottom();
            
            // Add event listener to the new button
            document.getElementById('save-contact').addEventListener('click', saveContact);
        }
        
        function saveContact() {
            const name = document.getElementById('contact-name').value.trim();
            const phone = document.getElementById('contact-phone').value.trim();
            const email = document.getElementById('contact-email').value.trim();
            
            if (!name || !phone) {
                alert('Please fill in your name and phone number.');
                return;
            }
            
            fetch('<?php echo admin_url('admin-ajax.php'); ?>', {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/x-www-form-urlencoded',
                },
                body: new URLSearchParams({
                    action: 'cloudprime_save_contact',
                    name: name,
                    phone: phone,
                    email: email,
                    session_id: sessionId,
                    nonce: '<?php echo wp_create_nonce('cloudprime_chat_nonce'); ?>'
                })
            })
            .then(response => response.json())
            .then(data => {
                if (data.success) {
                    userEmail = email;
                    // Replace form with thank you message
                    const formDiv = document.querySelector('.contact-form').parentElement;
                    formDiv.innerHTML = '<em>Thank you! How can I help you today?</em>';
                    
                    // Show predefined questions if available
                    if (data.data.predefined_questions && data.data.predefined_questions.length > 0) {
                        showPredefinedQuestions(data.data.predefined_questions);
                        predefinedShown = true;
                    }
                } else {
                    alert('Sorry, there was an error saving your contact information. Please try again.');
                }
            })
            .catch(error => {
                alert('Error saving contact');
            });
        }
        
        function addMessage(sender, text, type) {
            const messageDiv = document.createElement('div');
            messageDiv.className = `message ${type}`;
            messageDiv.innerHTML = `
                <div class="message-sender">${sender}</div>
                <div class="message-content">${text}</div>
            `;
            messagesContainer.appendChild(messageDiv);
            scrollToBottom();
            return messageDiv;
        }
        
        function showPredefinedQuestions(questions) {
            const div = document.createElement('div');
            div.className = 'message bot predefined-questions';
            div.innerHTML = `
                <div class="message-sender"><?php echo esc_js($ai_name); ?></div>
                <div class="message-content">
                    <h4>Quick questions</h4>
                    ${questions.map(q => `<button class="predefined-question" data-question="${q.trim()}">${q.trim()}</button>`).join('')}
                </div>
            `;
            messagesContainer.appendChild(div);
            scrollToBottom();
            
            // Add event listeners to new buttons
            div.querySelectorAll('.predefined-question').forEach(btn => {
                btn.addEventListener('click', function() {
                    const question = this.getAttribute('data-question');
                    input.value = question;
                    sendMessage();
                });
            });
        }
        
        function addWhatsAppButton() {
            const whatsappDiv = document.createElement('div');
            whatsappDiv.className = 'whatsapp-button-container';
            whatsappDiv.innerHTML = `
                <a href="https://wa.me/<?php echo esc_js($whatsapp_number); ?>?text=Hello, I need assistance" 
                   target="_blank" class="whatsapp-button">
                    📱 Chat on WhatsApp
                </a>
            `;
            messagesContainer.appendChild(whatsappDiv);
            scrollToBottom();
        }
        
        function scrollToBottom() {
            messagesContainer.scrollTop = messagesContainer.scrollHeight;
        }
    })();
    </script>
    
    <style>
    #cloudprime-chatbot {
        position: fixed;
        bottom: 80px;
        right: 20px;
        width: 350px;
        height: 500px;
        background: white;
        border-radius: 10px;
        box-shadow: 0 5px 30px rgba(0,0,0,0.3);
        z-index: 9999;
        display: flex;
        flex-direction: column;
        font-family: Arial, sans-serif;
    }
    
    #chatbot-header {
        background: #2c3e50;
        color: white;
        padding: 15px;
        border-radius: 10px 10px 0 0;
        display: flex;
        align-items: center;
        gap: 10px;
    }
    
    .chatbot-avatar img, .avatar-placeholder {
        width: 40px;
        height: 40px;
        border-radius: 50%;
        background: #34495e;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .chatbot-info h3 {
        margin: 0;
        font-size: 16px;
    }
    
    .chatbot-info p {
        margin: 0;
        font-size: 12px;
        opacity: 0.8;
    }
    
    #chatbot-minimize {
        margin-left: auto;
        background: none;
        border: none;
        color: white;
        font-size: 20px;
        cursor: pointer;
    }
    
    #chatbot-messages {
        flex: 1;
        overflow-y: auto;
        padding: 15px;
        background: #f8f9fa;
    }
    
    .message {
        margin-bottom: 15px;
    }
    
    .message.user {
        text-align: right;
    }
    
    .message-sender {
        font-size: 12px;
        color: #666;
        margin-bottom: 5px;
    }
    
    .message-content {
        display: inline-block;
        padding: 10px 15px;
        border-radius: 15px;
        max-width: 80%;
        word-wrap: break-word;
    }
    
    .message.user .message-content {
        background: #007bff;
        color: white;
    }
    
    .message.bot .message-content {
        background: white;
        color: #333;
        border: 1px solid #e0e0e0;
    }
    
    .message.system .message-content {
        background: #28a745;
        color: white;
    }
    
    .message.error .message-content {
        background: #dc3545;
        color: white;
    }
    
    .message.typing .message-content {
        opacity: 0.7;
    }
    
    #chatbot-input-area {
        display: flex;
        align-items: center;
        gap: 6px;
        padding: 10px;
        border-top: 1px solid #e0e0e0;
        background: white;
        border-radius: 0 0 10px 10px;
    }
    
    #chatbot-input {
        flex: 1;
        padding: 8px 10px;
        border: 1px solid #ced4da;
        border-radius: 5px;
        outline: none;
    }
    
    .voice-button {
        width: 34px;
        height: 34px;
        background: white;
        border: 1px solid #ced4da;
        border-radius: 4px;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        transition: background 0.2s;
    }
    
    .voice-button.listening {
        background: #ffc107;
        box-shadow: 0 0 6px #ffc107;
    }
    
    #chatbot-send {
        padding: 7px 12px;
        font-size: 13px;
        background: #007bff;
        color: white;
        border: none;
        border-radius: 4px;
        cursor: pointer;
        white-space: nowrap;
    }
    
    .contact-form {
        padding: 10px;
    }
    
    .contact-form input {
        width: 100%;
        padding: 8px;
        margin-bottom: 10px;
        border: 1px solid #e0e0e0;
        border-radius: 5px;
        box-sizing: border-box;
    }
    
    .save-contact-btn {
        width: 100%;
        padding: 10px;
        background: #28a745;
        color: white;
        border: none;
        border-radius: 5px;
        cursor: pointer;
    }
    
    .predefined-questions {
        text-align: center;
    }
    
    .predefined-question {
        display: block;
        width: 100%;
        margin-bottom: 5px;
        padding: 8px 12px;
        background: #f8f9fa;
        border: 1px solid #e0e0e0;
        border-radius: 5px;
        cursor: pointer;
        font-size: 14px;
    }
    
    .predefined-question:hover {
        background: #e9ecef;
    }
    
    #chatbot-toggle {
        position: fixed;
        bottom: 20px;
        right: 20px;
        width: 60px;
        height: 60px;
        background: #007bff;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        z-index: 9998;
        box-shadow: 0 2px 10px rgba(0,0,0,0.2);
    }
    
    .chat-icon {
        font-size: 24px;
        color: white;
    }
    
    .whatsapp-button {
        display: inline-block;
        background: #25d366;
        color: white;
        padding: 10px 15px;
        border-radius: 5px;
        text-decoration: none;
        margin-top: 10px;
    }
    
    .whatsapp-button:hover {
        background: #128c7e;
    }
    
    @media (max-width: 768px) {
        #cloudprime-chatbot {
            width: 90%;
            right: 5%;
            height: 70vh;
        }
    }
    </style>
    <?php
}
?>