<?php
session_start();
require_once 'config.php';

$pdo = getConexaoAtiva(); // Banco Principal
$pdo_int = getConexaoInterna(); // Banco Local (Onde o Watchdog vai morar)

$pdo->exec("SET NAMES utf8mb4");
$pdo_int->exec("SET NAMES utf8mb4");

// --- PROTEÇÃO GERAL (Admin e Revenda) ---
if (!isset($_SESSION['user_id'])) {
    die("Acesso negado. Por favor, faça login no painel.");
}

$id_usuario = $_SESSION['user_id'];
$nome_usuario = $_SESSION['username'] ?? 'Usuário';
$role = $_SESSION['user_role'] ?? 'revenda';
$is_admin = ($role === 'admin'); // Verifica se é o chefão

// BLOQUEIO DE SEGURANÇA: SÓ ADMIN ENTRA AQUI
if (!$is_admin) {
    header("Location: dashboard.php");
    exit;
}

// ====================================================================
// INTELIGÊNCIA ARTIFICIAL: DETECTA SE É XUI ONE OU XTREAM UI
// ====================================================================
$modo_ativo = 'interno';
try {
    $modo_ativo = $pdo_int->query("SELECT modo_ativo FROM configuracoes LIMIT 1")->fetchColumn() ?: 'interno';
} catch (Exception $e) {}

// --- INÍCIO: BUSCA DE PERSONALIZAÇÃO DINÂMICA (BANCO INTERNO) ---
$nome_painel = 'TOP IPTV';
$logo_url = '';
$cor_primaria = '#007bff';

try {
    $tabela_existe = $pdo_int->query("SHOW TABLES LIKE 'painel_config'")->rowCount() > 0;
    if ($tabela_existe) {
        $config_painel = $pdo_int->query("SELECT * FROM painel_config LIMIT 1")->fetch(PDO::FETCH_ASSOC);
        if ($config_painel) {
            $nome_painel = !empty($config_painel['nome_painel']) ? $config_painel['nome_painel'] : $nome_painel;
            $logo_url = !empty($config_painel['logo_url']) ? $config_painel['logo_url'] : $logo_url;
            $cor_primaria = !empty($config_painel['cor_primaria']) ? $config_painel['cor_primaria'] : $cor_primaria;
        }
    }
} catch (Exception $e) { }

$api_conf = ['api_binstream_url' => ''];
try {
    $api_conf = $pdo_int->query("SELECT api_binstream_url FROM painel_config LIMIT 1")->fetch(PDO::FETCH_ASSOC) ?: ['api_binstream_url' => ''];
} catch (Exception $e) {}

// Busca saldo no Banco Interno
try {
    $user_credits = $pdo_int->query("SELECT credits FROM reg_users WHERE id = " . intval($id_usuario))->fetchColumn() ?: 0;
} catch (Exception $e) { $user_credits = 0; }
// --- FIM: BUSCA DE PERSONALIZAÇÃO DINÂMICA ---

// =========================================================================
// BANCO DE DADOS: TABELAS DO WATCHDOG (AUTO-CRIAÇÃO NO BANCO INTERNO)
// =========================================================================
try {
    $pdo_int->exec("CREATE TABLE IF NOT EXISTS `watchdog_config` (
        `id` int(11) PRIMARY KEY,
        `status` tinyint(1) DEFAULT 1,
        `chave_seguranca` varchar(100) DEFAULT 'top_iptv_123'
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4");
    
    if ($pdo_int->query("SELECT COUNT(*) FROM watchdog_config")->fetchColumn() == 0) {
        $chave = substr(md5(time()), 0, 15);
        $pdo_int->exec("INSERT INTO watchdog_config (id, status, chave_seguranca) VALUES (1, 1, '$chave')");
    }

    $pdo_int->exec("CREATE TABLE IF NOT EXISTS `watchdog_logs` (
        `id` int(11) AUTO_INCREMENT PRIMARY KEY,
        `ip_servidor` varchar(50),
        `acao` varchar(255),
        `data_hora` timestamp DEFAULT CURRENT_TIMESTAMP
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4");
} catch (Exception $e) {}

$mensagem_status = "";

// SALVAR CONFIGURAÇÕES
if ($_SERVER['REQUEST_METHOD'] == 'POST' && isset($_POST['action_save_watchdog'])) {
    $status = isset($_POST['wd_status']) ? 1 : 0;
    $chave = trim($_POST['wd_chave']);
    
    $pdo_int->prepare("UPDATE watchdog_config SET status = ?, chave_seguranca = ? WHERE id = 1")
        ->execute([$status, $chave]);
    $mensagem_status = "<div class='alert success'><i class='fas fa-check-circle'></i> Configurações do Watchdog salvas!</div>";
}

$conf = $pdo_int->query("SELECT * FROM watchdog_config WHERE id = 1")->fetch(PDO::FETCH_ASSOC);
$logs = $pdo_int->query("SELECT * FROM watchdog_logs ORDER BY id DESC LIMIT 50")->fetchAll(PDO::FETCH_ASSOC);

// Busca os Load Balancers no Banco Interno
$servidores = [];
try {
    $servidores = $pdo_int->query("SELECT * FROM servidores_lb ORDER BY id DESC")->fetchAll(PDO::FETCH_ASSOC);
} catch(Exception $e){}

// Variáveis para o tutorial
$caminho_cpanel = "/usr/local/bin/php -q /home/geandrober/public_html/xtreamui/watchdog_cron.php";
$caminho_vps = "*/5 * * * * /usr/bin/php /var/www/html/xtreamui/watchdog_cron.php";
?>

<!DOCTYPE html>
<html lang="pt-BR">
<head>
    <link rel="stylesheet" href="tema.css">
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
    <title>Watchdog - <?php echo htmlspecialchars($nome_painel); ?></title>
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
    <style>
        :root { --bg-dark: #121519; --bg-sidebar: #1e2227; --bg-card: #272c33; --text-main: #d1d5da; --text-muted: #8a94a1; --accent: <?php echo $cor_primaria; ?>; --border-color: #3a4149; --success: #28a745; --danger: #dc3545; --warning: #f39c12; }
        body { margin: 0; font-family: 'Segoe UI', sans-serif; background-color: var(--bg-dark); color: var(--text-main); display: flex; height: 100vh; overflow: hidden; }
        
        /* MENU LATERAL PADRÃO (USANDO O INCLUDE SIDEBAR.PHP) */
        .sidebar { width: 260px; background-color: var(--bg-sidebar); display: flex; flex-direction: column; transition: 0.3s; border-right: 1px solid var(--border-color); z-index: 1001; flex-shrink: 0; }
        .sidebar-header { padding: 25px 20px; text-align: center; font-size: 22px; font-weight: bold; color: white; border-bottom: 1px solid var(--border-color); }
        .sidebar-logo { max-width: 180px; max-height: 55px; object-fit: contain; }
        .user-info { padding: 20px; text-align: center; border-bottom: 1px solid var(--border-color); }
        .user-info .badge { background: rgba(255, 255, 255, 0.05); color: var(--accent); padding: 4px 10px; border-radius: 4px; font-size: 11px; text-transform: uppercase; font-weight: bold; margin-top: 5px; display: inline-block; }
        .credits-badge { display: block; margin-top: 10px; color: var(--success); font-weight: bold; font-size: 13px; }
        
        .menu-list { list-style: none; padding: 0; margin: 0; overflow-y: auto; flex: 1; }
        .menu-item { padding: 14px 20px; color: var(--text-main); text-decoration: none; display: flex; align-items: center; transition: 0.2s; border-left: 3px solid transparent; font-size: 14px; cursor: pointer; }
        .menu-item i:first-child { margin-right: 12px; width: 20px; text-align: center; color: var(--text-muted); }
        .menu-item:hover, .menu-item.active { background-color: #2c3138; color: white; border-left-color: var(--accent); }
        .menu-item.active i:first-child { color: var(--accent); }
        
        .submenu { display: none; background: #16191d; list-style: none; padding: 0; margin: 0; }
        .submenu .menu-item { padding-left: 52px; font-size: 13px; border-left: none; }
        .arrow-icon { margin-left: auto; transition: 0.3s; font-size: 11px; }
        .rotate { transform: rotate(180deg); }
        .menu-category { padding: 20px 20px 8px; font-size: 10px; text-transform: uppercase; color: var(--text-muted); font-weight: bold; letter-spacing: 1px; }
        .logout-btn { padding: 15px; background-color: #dc3545; color: white; text-align: center; text-decoration: none; font-weight: bold; }

        /* CONTEÚDO PRINCIPAL E RESPONSIVIDADE */
        .main-content { flex: 1; display: flex; flex-direction: column; overflow-y: auto; width: 100%; position: relative; }
        .topbar { display: flex; justify-content: space-between; align-items: center; padding: 15px 30px; background-color: var(--bg-sidebar); border-bottom: 1px solid var(--border-color); }
        .topbar-right { display: flex; align-items: center; }
        .mode-badge { padding: 6px 15px; background: rgba(0, 123, 255, 0.15); color: var(--accent); border-radius: 20px; font-size: 12px; font-weight: bold; border: 1px solid var(--accent); white-space: nowrap; }
        .menu-toggle { display: none; background: none; border: none; color: white; font-size: 22px; cursor: pointer; padding: 5px; }
        .sidebar-overlay { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.7); z-index: 1000; }
        .content-area { padding: 25px; flex: 1; max-width: 900px; margin: 0 auto; width: 100%; box-sizing: border-box; }

        /* ESTILOS ESPECÍFICOS DO WATCHDOG */
        .card { background: var(--bg-card); border-radius: 12px; border: 1px solid var(--border-color); padding: 25px; margin-bottom: 20px; box-shadow: 0 4px 15px rgba(0,0,0,0.1); }
        .form-group { margin-bottom: 20px; }
        label { display: block; margin-bottom: 8px; font-weight: bold; color: white; font-size: 13px;}
        input[type="text"] { width: 100%; background: #121519; border: 1px solid var(--border-color); color: white; border-radius: 8px; padding: 12px; font-size: 14px; box-sizing: border-box; font-family: inherit;}
        input[type="text"]:focus { border-color: var(--accent); outline: none; }
        .btn-salvar { background: var(--accent); color: white; border: none; padding: 15px 30px; border-radius: 8px; cursor: pointer; font-weight: bold; width: 100%; font-size: 15px; transition: 0.2s;}
        .btn-salvar:hover { filter: brightness(1.1); box-shadow: 0 4px 15px rgba(0,123,255,0.2); }
        
        .btn-tutorial { background: #8b5cf6; color: white; border: none; padding: 12px; border-radius: 8px; cursor: pointer; font-weight: bold; width: 100%; margin-top: 15px; font-size: 14px; transition: 0.2s; display: flex; justify-content: center; align-items: center; gap: 8px;}
        .btn-tutorial:hover { background: #7c3aed; }
        
        .alert { padding: 15px; background: rgba(40, 167, 69, 0.15); color: var(--success); border: 1px solid var(--success); border-radius: 8px; margin-bottom: 20px; font-weight: bold; display: flex; align-items: center; gap: 10px;}
        
        .switch { position: relative; display: inline-block; width: 50px; height: 26px; }
        .switch input { opacity: 0; width: 0; height: 0; }
        .slider { position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0; background-color: #3a4149; transition: .3s; border-radius: 34px; }
        .slider:before { position: absolute; content: ""; height: 18px; width: 18px; left: 4px; bottom: 4px; background-color: white; transition: .3s; border-radius: 50%; }
        input:checked + .slider { background-color: var(--success); }
        input:checked + .slider:before { transform: translateX(24px); }

        .table-responsive { overflow-x: auto; width: 100%; }
        table { width: 100%; border-collapse: collapse; margin-top: 15px; font-size: 13px; min-width: 500px;}
        th, td { text-align: left; padding: 12px; border-bottom: 1px solid var(--border-color); }
        th { color: var(--text-muted); text-transform: uppercase; font-size: 11px; font-weight: bold;}
        td { color: var(--text-main); }

        /* MODAL TUTORIAL */
        .modal-overlay-tutorial { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.8); z-index: 2000; justify-content: center; align-items: center; backdrop-filter: blur(5px); }
        .modal-box { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 15px; padding: 30px; width: 90%; max-width: 650px; position: relative; box-shadow: 0 20px 40px rgba(0,0,0,0.5); }
        .modal-close { position: absolute; top: 15px; right: 20px; background: none; border: none; color: var(--text-muted); font-size: 24px; cursor: pointer; }
        .modal-close:hover { color: var(--danger); }
        .tutorial-content { text-align: left; color: var(--text-main); font-size: 14px; line-height: 1.6; max-height: 60vh; overflow-y: auto; padding-right: 10px; }
        .tutorial-content h4 { color: var(--accent); margin-top: 15px; margin-bottom: 10px; border-bottom: 1px solid var(--border-color); padding-bottom: 10px; font-size: 16px; display: flex; align-items: center; gap: 8px;}
        .tutorial-content ol { padding-left: 20px; margin: 0; }
        .tutorial-content li { margin-bottom: 12px; }
        .tutorial-content strong { color: white; }
        
        .copy-group { display: flex; gap: 8px; margin-top: 10px; margin-bottom: 20px;}
        .copy-group input { flex: 1; background: #121519; border: 1px solid var(--border-color); color: var(--text-main); padding: 10px; border-radius: 6px; font-size: 12px; outline: none; font-family: monospace;}
        .copy-group button { background: var(--accent); color: white; border: none; padding: 10px 15px; border-radius: 6px; cursor: pointer; font-weight: bold; transition: 0.2s; display: flex; align-items: center; gap: 5px; flex-shrink: 0;}
        .copy-group button:hover { filter: brightness(1.2); }

        @media (max-width: 768px) {
            .menu-toggle { display: block; margin-right: 10px; }
            .sidebar { position: fixed; left: -260px; height: 100%; box-shadow: 10px 0 20px rgba(0,0,0,0.5); }
            .sidebar.active { left: 0; }
            .sidebar-overlay.active { display: block; }
            .topbar { padding: 15px 20px; justify-content: flex-start;}
            .content-area { padding: 15px; }
            .copy-group { flex-direction: column; }
        }
    </style>
</head>
<body>
    <div class="sidebar-overlay" id="overlay" onclick="toggleMenu()"></div>
    
    <?php include 'sidebar.php'; ?>

    <div class="main-content">
        <header class="topbar">
            <div style="display:flex; align-items:center; gap: 10px;">
                <button class="menu-toggle" onclick="toggleMenu()"><i class="fas fa-bars"></i></button>
                <h2 style="margin:0; font-size: 18px; color:white;"><i class="fas fa-dog" style="color:var(--accent);"></i> Cão de Guarda (Watchdog)</h2>
            </div>
            <div class="topbar-right">
                <span class="mode-badge"><i class="fas fa-database"></i> MODO: <?php echo defined('MODO_SISTEMA') ? strtoupper(MODO_SISTEMA) : strtoupper($modo_ativo); ?></span>
            </div>
        </header>

        <div class="content-area">
            <?php echo $mensagem_status; ?>

            <form method="POST">
                <input type="hidden" name="action_save_watchdog" value="1">
                
                <div class="card">
                    <div style="display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 15px;">
                        <div>
                            <h4 style="margin:0; color:white; font-size: 16px;">Status do Funcionamento</h4>
                            <p style="font-size: 12px; color: var(--text-muted); margin-top: 5px;">Se desligar, o Watchdog não enviará comando de reinício para os LBs.</p>
                        </div>
                        <label class="switch">
                            <input type="checkbox" name="wd_status" <?php echo ($conf['status'] == 1) ? 'checked' : ''; ?>>
                            <span class="slider"></span>
                        </label>
                    </div>
                </div>

                <div class="card">
                    <h4 style="margin-top:0; color: white; font-size: 16px; border-bottom: 1px solid var(--border-color); padding-bottom: 10px;"><i class="fas fa-shield-alt"></i> Configuração de Segurança</h4>
                    
                    <div class="form-group">
                        <label>Chave de Segurança (API Key)</label>
                        <p style="font-size: 11px; color: var(--warning); margin-top: 0;">Esta chave deve ser a mesma colocada dentro do arquivo <code>watchdog_lb.php</code> nos seus servidores LB.</p>
                        <input type="text" name="wd_chave" value="<?php echo htmlspecialchars($conf['chave_seguranca']); ?>" required>
                    </div>

                    <button type="submit" class="btn-salvar"><i class="fas fa-save"></i> SALVAR CONFIGURAÇÕES</button>
                    
                    <button type="button" class="btn-tutorial" onclick="abrirTutorialCron()"><i class="fas fa-terminal"></i> Como configurar a Tarefa Cron?</button>
                </div>
            </form>

            <div class="card">
                <h4 style="margin-top:0; color: white; font-size: 16px; border-bottom: 1px solid var(--border-color); padding-bottom: 10px;"><i class="fas fa-history"></i> Relatório de Quedas e Reboots</h4>
                <div class="table-responsive">
                    <table>
                        <thead>
                            <tr>
                                <th>Data/Hora</th>
                                <th>IP do Servidor</th>
                                <th>Ação do Watchdog</th>
                            </tr>
                        </thead>
                        <tbody>
                            <?php if(empty($logs)): ?>
                                <tr><td colspan="3" style="text-align:center; color: var(--text-muted); padding:20px;">Nenhuma queda detectada. 100% Uptime!</td></tr>
                            <?php else: foreach($logs as $l): ?>
                                <tr>
                                    <td><?php echo date('d/m/Y H:i', strtotime($l['data_hora'])); ?></td>
                                    <td style="font-family: monospace; color: var(--warning);"><strong><?php echo htmlspecialchars($l['ip_servidor']); ?></strong></td>
                                    <td><?php echo htmlspecialchars($l['acao']); ?></td>
                                </tr>
                            <?php endforeach; endif; ?>
                        </tbody>
                    </table>
                </div>
            </div>
        </div>
        <?php include 'rodape.php'; ?>
    </div>

    <div class="modal-overlay-tutorial" id="modalTutorialCron">
        <div class="modal-box">
            <button class="modal-close" onclick="fecharTutorialCron()"><i class="fas fa-times"></i></button>
            <h3 style="margin-top: 0; color: white; border-bottom: 1px solid var(--border-color); padding-bottom: 15px; text-align: left;">
                <i class="fas fa-clock" style="color: #8b5cf6;"></i> Configurar Tarefa Cron (Vigia)
            </h3>
            
            <div class="tutorial-content">
                <p style="color: var(--text-muted); font-size: 13px;">O Watchdog precisa ser "acordado" a cada 5 minutos pelo seu servidor principal para verificar se os Load Balancers estão vivos. Escolha a sua opção abaixo:</p>

                <h4><i class="fas fa-cogs"></i> Opção 1: Hospedagem (cPanel)</h4>
                <ol>
                    <li>Acesse o painel principal do seu <strong>cPanel</strong>.</li>
                    <li>Role até a seção "Avançado" e clique em <strong>Trabalhos Cron</strong> (Cron Jobs).</li>
                    <li>Em "Configurações Comuns", selecione: <strong>Uma vez a cada 5 minutos (*/5 * * * *)</strong>.</li>
                    <li>No campo "Comando", cole o código abaixo e salve:</li>
                </ol>
                <div class="copy-group">
                    <input type="text" id="cmd_cpanel" value="<?php echo $caminho_cpanel; ?>" readonly>
                    <button type="button" onclick="copiarComando('cmd_cpanel')"><i class="fas fa-copy"></i> Copiar</button>
                </div>

                <h4 style="margin-top: 25px;"><i class="fas fa-terminal"></i> Opção 2: VPS Linux (Terminal SSH)</h4>
                <ol>
                    <li>Acesse sua VPS via SSH (Putty, Termius, etc).</li>
                    <li>Digite o comando <code>crontab -e</code> e aperte Enter.</li>
                    <li>Vá até a última linha do arquivo, cole o código abaixo e salve:</li>
                </ol>
                <div class="copy-group">
                    <input type="text" id="cmd_vps" value="<?php echo $caminho_vps; ?>" readonly>
                    <button type="button" onclick="copiarComando('cmd_vps')"><i class="fas fa-copy"></i> Copiar</button>
                </div>
                
                <div style="background: rgba(243, 156, 18, 0.1); border-left: 4px solid var(--warning); padding: 10px 15px; margin-top: 20px; border-radius: 4px;">
                    <p style="margin: 0; font-size: 12px; color: var(--text-main);"><strong style="color:var(--warning);">Atenção:</strong> Certifique-se de que o caminho do arquivo <code>watchdog_cron.php</code> e a versão do PHP nos comandos acima estão corretos para a estrutura do seu servidor.</p>
                </div>
            </div>
        </div>
    </div>

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