<?php

// Configurar manejo de errores para devolver JSON
error_reporting(E_ALL);
ini_set('display_errors', 0); // No mostrar errores en HTML

// Handler global de errores
set_error_handler(function($errno, $errstr, $errfile, $errline) {
    throw new ErrorException($errstr, 0, $errno, $errfile, $errline);
});

// Handler global de excepciones no capturadas
set_exception_handler(function($exception) {
    header('Content-Type: application/json');
    echo json_encode([
        'success' => false,
        'message' => 'Error fatal: ' . $exception->getMessage(),
        'file' => $exception->getFile(),
        'line' => $exception->getLine()
    ]);
    exit;
});

chdir(__DIR__);

require_once __DIR__ . '/vendor/autoload.php';
require_once __DIR__ . '/src/IpSearchService.php';

use Ubnt\UcrmPluginSdk\Service\PluginLogManager;
use Ubnt\UcrmPluginSdk\Service\PluginConfigManager;
use SiipAvailableIps\IpSearchService;

// Get UCRM log manager
$log = PluginLogManager::create();

// Log TODAS las peticiones
$log->appendLog('=== NUEVA PETICIÓN ===' );
$log->appendLog('Método: ' . $_SERVER['REQUEST_METHOD']);
$log->appendLog('POST data: ' . json_encode($_POST));
$log->appendLog('GET data: ' . json_encode($_GET));
$log->appendLog('Content-Type: ' . ($_SERVER['CONTENT_TYPE'] ?? 'no definido'));
$log->appendLog('User Agent: ' . ($_SERVER['HTTP_USER_AGENT'] ?? 'no definido'));

// Manejar peticiones AJAX
if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['action']) && $_POST['action'] === 'search') {
    $log->appendLog('>>> Entrando al handler de búsqueda AJAX');
    
    try {
        // Obtener configuración del plugin desde data/config.json
        $configManager = PluginConfigManager::create();
        $config = $configManager->loadConfig();
        
        $log->appendLog('Configuración cargada: ' . json_encode([
            'ipserver' => $config['ipserver'] ?? 'NO CONFIGURADO',
            'hasUnmsToken' => !empty($config['unmsApiToken']),
            'hasApiToken' => !empty($config['apitoken'])
        ]));
        
        // Validar que exista la configuración necesaria
        if (empty($config['ipserver'])) {
            $log->appendLog('ERROR: No se ha configurado ipserver');
            header('Content-Type: application/json');
            echo json_encode([
                'success' => false,
                'message' => 'El plugin no está configurado correctamente. Falta la dirección del servidor.'
            ]);
            exit;
        }
        
        if (empty($config['unmsApiToken'])) {
            $log->appendLog('ERROR: No se ha configurado unmsApiToken');
            header('Content-Type: application/json');
            echo json_encode([
                'success' => false,
                'message' => 'El plugin no está configurado correctamente. Falta el token de API de UNMS.'
            ]);
            exit;
        }
        
        $segmento = $_POST['segment'] ?? '';
        $log->appendLog("Buscando IPs en segmento: $segmento");
        
        // URL de la API de UISP - Usar HTTPS
        $apiUrl = "https://{$config['ipserver']}/nms/api/v2.1/devices/ips?suspended=false&management=true&includeObsolete=true";
        $apiToken = $config['unmsApiToken'];
        
        $log->appendLog("URL de API: $apiUrl");
        
        // Crear instancia del servicio y buscar IPs
        $ipService = new IpSearchService($apiUrl, $apiToken, $log);
        $resultado = $ipService->buscarIpsDisponibles($segmento);
        
        $log->appendLog('Resultado de búsqueda: ' . json_encode([
            'success' => $resultado['success'],
            'ipsDisponibles' => count($resultado['data'] ?? []),
            'ipsEnUso' => count($resultado['used'] ?? [])
        ]));
        
        header('Content-Type: application/json');
        echo json_encode($resultado);
        
    } catch (Exception $e) {
        $log->appendLog('EXCEPCIÓN en búsqueda de IPs: ' . $e->getMessage() . ' | Trace: ' . $e->getTraceAsString());
        header('Content-Type: application/json');
        echo json_encode([
            'success' => false,
            'message' => 'Error al procesar la solicitud: ' . $e->getMessage(),
            'error_file' => $e->getFile(),
            'error_line' => $e->getLine()
        ]);
    } catch (Error $e) {
        $log->appendLog('ERROR FATAL en búsqueda de IPs: ' . $e->getMessage() . ' | Trace: ' . $e->getTraceAsString());
        header('Content-Type: application/json');
        echo json_encode([
            'success' => false,
            'message' => 'Error fatal: ' . $e->getMessage(),
            'error_file' => $e->getFile(),
            'error_line' => $e->getLine()
        ]);
    }
    
    $log->appendLog('<<< Finalizando handler de búsqueda AJAX');
    exit;
} else if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $log->appendLog('Petición POST recibida pero sin action=search o action no válida');
    $log->appendLog('Action recibida: ' . ($_POST['action'] ?? 'NO DEFINIDA'));
}

// Log de acceso público
$log->appendLog('Acceso a la interfaz pública de búsqueda de IPs');

?>
<!DOCTYPE html>
<html lang="es">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Buscador de IPs Disponibles - SIIP</title>
    <link rel="preconnect" href="https://fonts.googleapis.com">
    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
    <link href="https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap" rel="stylesheet">
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        :root {
            --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
            --success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
            --dark-bg: #0f0f23;
            --card-bg: rgba(255, 255, 255, 0.05);
            --card-border: rgba(255, 255, 255, 0.1);
            --text-primary: #ffffff;
            --text-secondary: #a0aec0;
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.3);
            --shadow-xl: 0 25px 80px rgba(0, 0, 0, 0.4);
        }

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            background: var(--dark-bg);
            color: var(--text-primary);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
            background-image: 
                radial-gradient(circle at 20% 50%, rgba(102, 126, 234, 0.15) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(245, 87, 108, 0.15) 0%, transparent 50%);
            background-attachment: fixed;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            animation: fadeInUp 0.6s ease-out;
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .header {
            text-align: center;
            margin-bottom: 40px;
        }

        .logo {
            width: 80px;
            height: 80px;
            margin: 0 auto 20px;
            background: var(--primary-gradient);
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 40px;
            box-shadow: var(--shadow-lg);
            animation: pulse 2s ease-in-out infinite;
        }

        @keyframes pulse {
            0%, 100% {
                transform: scale(1);
            }
            50% {
                transform: scale(1.05);
            }
        }

        h1 {
            font-size: 2.5rem;
            font-weight: 700;
            background: linear-gradient(135deg, #667eea 0%, #f5576c 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 10px;
        }

        .subtitle {
            color: var(--text-secondary);
            font-size: 1.1rem;
            font-weight: 400;
        }

        .card {
            background: var(--card-bg);
            backdrop-filter: blur(20px);
            border: 1px solid var(--card-border);
            border-radius: 24px;
            padding: 40px;
            box-shadow: var(--shadow-xl);
            margin-bottom: 30px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .card:hover {
            transform: translateY(-5px);
            box-shadow: 0 30px 90px rgba(0, 0, 0, 0.5);
        }

        .search-form {
            display: flex;
            gap: 15px;
            margin-bottom: 30px;
            flex-wrap: wrap;
        }

        .input-group {
            flex: 1;
            min-width: 250px;
        }

        label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        .input-wrapper {
            position: relative;
        }

        .input-prefix {
            position: absolute;
            left: 20px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-secondary);
            font-weight: 500;
            pointer-events: none;
        }

        input[type="text"] {
            width: 100%;
            padding: 16px 20px 16px 90px;
            background: rgba(255, 255, 255, 0.05);
            border: 2px solid var(--card-border);
            border-radius: 12px;
            color: var(--text-primary);
            font-size: 1rem;
            font-family: 'Inter', sans-serif;
            transition: all 0.3s ease;
        }

        input[type="text"]:focus {
            outline: none;
            border-color: #667eea;
            background: rgba(255, 255, 255, 0.08);
            box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
        }

        .btn {
            padding: 16px 32px;
            border: none;
            border-radius: 12px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            font-family: 'Inter', sans-serif;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            align-self: flex-end;
        }

        .btn-primary {
            background: var(--primary-gradient);
            color: white;
            box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 15px 40px rgba(102, 126, 234, 0.4);
        }

        .btn-primary:active {
            transform: translateY(0);
        }

        .btn-primary:disabled {
            opacity: 0.6;
            cursor: not-allowed;
            transform: none;
        }

        .loading {
            display: none;
            text-align: center;
            padding: 20px;
        }

        .loading.active {
            display: block;
        }

        .spinner {
            width: 50px;
            height: 50px;
            margin: 0 auto 15px;
            border: 4px solid rgba(255, 255, 255, 0.1);
            border-top-color: #667eea;
            border-radius: 50%;
            animation: spin 1s linear infinite;
        }

        @keyframes spin {
            to { transform: rotate(360deg); }
        }

        .results {
            display: none;
        }

        .results.active {
            display: block;
            animation: fadeInUp 0.5s ease-out;
        }

        .stats {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin-bottom: 30px;
        }

        .stat-card {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--card-border);
            border-radius: 16px;
            padding: 20px;
            text-align: center;
        }

        .stat-value {
            font-size: 2.5rem;
            font-weight: 700;
            background: var(--success-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 5px;
        }

        .stat-label {
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        .table-container {
            overflow-x: auto;
            border-radius: 16px;
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid var(--card-border);
        }

        table {
            width: 100%;
            border-collapse: collapse;
        }

        thead {
            background: rgba(255, 255, 255, 0.05);
        }

        th {
            padding: 16px;
            text-align: left;
            font-weight: 600;
            color: var(--text-secondary);
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        td {
            padding: 16px;
            border-top: 1px solid var(--card-border);
        }

        tbody tr {
            transition: background 0.2s ease;
        }

        tbody tr:hover {
            background: rgba(255, 255, 255, 0.03);
        }

        .ip-address {
            font-family: 'Courier New', monospace;
            font-weight: 600;
            font-size: 1rem;
            color: #4facfe;
        }

        .btn-copy {
            padding: 8px 16px;
            background: rgba(102, 126, 234, 0.2);
            border: 1px solid rgba(102, 126, 234, 0.3);
            border-radius: 8px;
            color: #667eea;
            font-size: 0.85rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .btn-copy:hover {
            background: rgba(102, 126, 234, 0.3);
            border-color: rgba(102, 126, 234, 0.5);
            transform: scale(1.05);
        }

        .btn-copy.copied {
            background: rgba(79, 172, 254, 0.2);
            border-color: rgba(79, 172, 254, 0.3);
            color: #4facfe;
        }

        .alert {
            padding: 16px 20px;
            border-radius: 12px;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 12px;
            animation: fadeInUp 0.4s ease-out;
        }

        .alert-error {
            background: rgba(245, 87, 108, 0.1);
            border: 1px solid rgba(245, 87, 108, 0.3);
            color: #f5576c;
        }

        .alert-success {
            background: rgba(79, 172, 254, 0.1);
            border: 1px solid rgba(79, 172, 254, 0.3);
            color: #4facfe;
        }

        .footer {
            text-align: center;
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-top: 40px;
        }

        .footer a {
            color: #667eea;
            text-decoration: none;
            transition: color 0.2s ease;
        }

        .footer a:hover {
            color: #f5576c;
        }

        @media (max-width: 768px) {
            h1 {
                font-size: 2rem;
            }

            .card {
                padding: 25px;
            }

            .search-form {
                flex-direction: column;
            }

            .btn {
                width: 100%;
                justify-content: center;
            }

            .stats {
                grid-template-columns: 1fr;
            }
        }
    </style>
</head>
<body>
    <div class="container">
        <div class="header">
            <div class="logo">🌐</div>
            <h1>Buscador de IPs Disponibles</h1>
            <p class="subtitle">Sistema de gestión de direcciones IP para UISP</p>
        </div>

        <div class="card">
            <form class="search-form" id="searchForm">
                <div class="input-group">
                    <label for="segment">Segmento de Red</label>
                    <div class="input-wrapper">
                        <span class="input-prefix">172.16.</span>
                        <input 
                            type="text" 
                            id="segment" 
                            name="segment" 
                            placeholder="0-255"
                            required
                            pattern="[0-9]{1,3}"
                            maxlength="3"
                        >
                    </div>
                </div>
                <button type="submit" class="btn btn-primary" id="searchBtn">
                    <span>🔍</span>
                    <span>Buscar IPs</span>
                </button>
            </form>

            <div class="loading" id="loading">
                <div class="spinner"></div>
                <p>Consultando IPs disponibles...</p>
            </div>

            <div id="errorContainer"></div>

            <div class="results" id="results">
                <div class="stats">
                    <div class="stat-card">
                        <div class="stat-value" id="availableCount">0</div>
                        <div class="stat-label">IPs Disponibles</div>
                    </div>
                    <div class="stat-card">
                        <div class="stat-value" id="usedCount">0</div>
                        <div class="stat-label">IPs en Uso</div>
                    </div>
                    <div class="stat-card">
                        <div class="stat-value" id="segmentDisplay">-</div>
                        <div class="stat-label">Segmento</div>
                    </div>
                </div>

                <div class="table-container">
                    <table>
                        <thead>
                            <tr>
                                <th>#</th>
                                <th>Dirección IP</th>
                                <th>Acción</th>
                            </tr>
                        </thead>
                        <tbody id="ipTableBody">
                        </tbody>
                    </table>
                </div>
            </div>
        </div>

        <div class="footer">
            <p>Desarrollado por <a href="https://siip.mx" target="_blank">SIIP Internet</a></p>
        </div>
    </div>

    <script>
        const searchForm = document.getElementById('searchForm');
        const searchBtn = document.getElementById('searchBtn');
        const loading = document.getElementById('loading');
        const results = document.getElementById('results');
        const errorContainer = document.getElementById('errorContainer');
        const ipTableBody = document.getElementById('ipTableBody');
        const availableCount = document.getElementById('availableCount');
        const usedCount = document.getElementById('usedCount');
        const segmentDisplay = document.getElementById('segmentDisplay');

        searchForm.addEventListener('submit', async (e) => {
            e.preventDefault();
            
            const segment = document.getElementById('segment').value;
            
            // Validar segmento
            const segmentNum = parseInt(segment);
            if (isNaN(segmentNum) || segmentNum < 0 || segmentNum > 255) {
                showError('El segmento debe ser un número entre 0 y 255');
                return;
            }

            // Mostrar loading
            loading.classList.add('active');
            results.classList.remove('active');
            errorContainer.innerHTML = '';
            searchBtn.disabled = true;

            try {
                const formData = new FormData();
                formData.append('action', 'search');
                formData.append('segment', segment);

                console.log('Enviando petición AJAX...');
                console.log('Segmento:', segment);

                const response = await fetch('', {
                    method: 'POST',
                    body: formData
                });

                console.log('Respuesta recibida:', response.status, response.statusText);

                // Verificar si la respuesta es JSON
                const contentType = response.headers.get('content-type');
                console.log('Content-Type:', contentType);

                if (!contentType || !contentType.includes('application/json')) {
                    const textResponse = await response.text();
                    console.error('Respuesta no es JSON:', textResponse.substring(0, 500));
                    throw new Error('El servidor no devolvió una respuesta JSON válida');
                }

                const data = await response.json();
                console.log('Datos recibidos:', data);

                loading.classList.remove('active');
                searchBtn.disabled = false;

                if (data.success) {
                    displayResults(data);
                } else {
                    showError(data.message || 'Error al buscar IPs disponibles');
                }
            } catch (error) {
                loading.classList.remove('active');
                searchBtn.disabled = false;
                console.error('Error completo:', error);
                console.error('Tipo de error:', error.name);
                console.error('Mensaje:', error.message);
                console.error('Stack:', error.stack);
                showError('Error de conexión: ' + error.message + '. Revise la consola del navegador para más detalles.');
            }
        });

        function displayResults(data) {
            // Actualizar estadísticas
            availableCount.textContent = data.data.length;
            usedCount.textContent = data.used ? data.used.length : 0;
            segmentDisplay.textContent = data.segment || '-';

            // Limpiar tabla
            ipTableBody.innerHTML = '';

            // Mostrar mensaje si no hay IPs disponibles
            if (data.data.length === 0) {
                showError('No hay IPs disponibles en este segmento', 'warning');
                return;
            }

            // Llenar tabla
            data.data.forEach((ip, index) => {
                const row = document.createElement('tr');
                row.innerHTML = `
                    <td>${index + 1}</td>
                    <td><span class="ip-address">${ip}</span></td>
                    <td>
                        <button class="btn-copy" onclick="copyToClipboard('${ip}', this)">
                            📋 Copiar
                        </button>
                    </td>
                `;
                ipTableBody.appendChild(row);
            });

            // Mostrar resultados
            results.classList.add('active');
            
            // Mostrar mensaje de éxito
            showError(data.message, 'success');
        }

        function showError(message, type = 'error') {
            const alertClass = type === 'success' ? 'alert-success' : 'alert-error';
            const icon = type === 'success' ? '✓' : '⚠';
            
            errorContainer.innerHTML = `
                <div class="alert ${alertClass}">
                    <span style="font-size: 1.5rem;">${icon}</span>
                    <span>${message}</span>
                </div>
            `;

            // Auto-ocultar mensajes de éxito después de 5 segundos
            if (type === 'success') {
                setTimeout(() => {
                    errorContainer.innerHTML = '';
                }, 5000);
            }
        }

        async function copyToClipboard(text, button) {
            try {
                await navigator.clipboard.writeText(text);
                
                const originalText = button.innerHTML;
                button.innerHTML = '✓ Copiado';
                button.classList.add('copied');

                setTimeout(() => {
                    button.innerHTML = originalText;
                    button.classList.remove('copied');
                }, 2000);
            } catch (error) {
                console.error('Error al copiar:', error);
                alert('Error al copiar al portapapeles');
            }
        }

        // Auto-focus en el campo de segmento
        document.getElementById('segment').focus();
    </script>
</body>
</html>