<?php
session_start();
// Apenas Admin tem acesso
if (!isset($_SESSION['logado']) || $_SESSION['nivel'] !== 'admin') { 
    header("Location: index.php"); 
    exit; 
}

require_once 'conexao.php'; // Traz as variáveis $connGeral e $connUser

$msg = "";
$msg_tipo = "";

// --- 1. BUSCA CONFIGURAÇÕES DO SITE (NOME E COR) ---
$nomePainel = "IPTV PANEL"; 
$corPrimaria = "#7367f0"; 
try {
    $conf = $connGeral->query("SELECT NomePainel, TemaPainel FROM site_config LIMIT 1")->fetch(PDO::FETCH_ASSOC);
    if ($conf) {
        if (!empty($conf['NomePainel'])) $nomePainel = $conf['NomePainel'];
        if (!empty($conf['TemaPainel'])) $corPrimaria = $conf['TemaPainel'];
    }
} catch (Exception $e) { }

// --- 2. PROCESSAMENTO DAS AÇÕES ---
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    try {
        $acao = $_POST['acao'];
        $id   = $_POST['id'] ?? 0;

        $nome      = $_POST['nome'] ?? '';
        $url       = $_POST['url'] ?? '';
        $porta     = $_POST['porta'] ?? '';
        $usuario   = $_POST['usuario'] ?? '';
        $senha     = $_POST['senha'] ?? '';
        $protocolo = $_POST['protocolo'] ?? 'http';
        $atualizar = $_POST['atualizar'] ?? '';

        if ($acao === 'criar') {
            $sql = "INSERT INTO painel (nome, url, porta, usuario, senha, protocolo, block, atualizar) VALUES (?, ?, ?, ?, ?, ?, 'nao', ?)";
            $connGeral->prepare($sql)->execute([$nome, $url, $porta, $usuario, $senha, $protocolo, $atualizar]);
            $msg = "Servidor <b>$nome</b> adicionado!"; $msg_tipo = "success";
        }

        if ($acao === 'editar') {
            $sql = "UPDATE painel SET nome=?, url=?, porta=?, usuario=?, senha=?, protocolo=?, atualizar=? WHERE id=?";
            $connGeral->prepare($sql)->execute([$nome, $url, $porta, $usuario, $senha, $protocolo, $atualizar, $id]);
            $msg = "Dados atualizados!"; $msg_tipo = "primary";
        }

        if ($acao === 'toggle_block') {
            $curr = $connGeral->query("SELECT block FROM painel WHERE id=$id")->fetchColumn();
            $novo = ($curr == 'sim') ? 'nao' : 'sim';
            $connGeral->prepare("UPDATE painel SET block=? WHERE id=?")->execute([$novo, $id]);
            $msg = "Status alterado!"; $msg_tipo = "warning";
        }

        if ($acao === 'excluir') {
            $connGeral->prepare("DELETE FROM painel WHERE id=?")->execute([$id]);
            $msg = "Servidor removido!"; $msg_tipo = "danger";
        }
    } catch (PDOException $e) { $msg = "Erro: " . $e->getMessage(); $msg_tipo = "danger"; }
}

// --- 3. LISTAR SERVIDORES ---
$lista = $connGeral->query("SELECT * FROM painel ORDER BY id DESC")->fetchAll(PDO::FETCH_ASSOC);
?>

<!DOCTYPE html>
<html lang="pt-br">
<head>
    <meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Gerenciar DNS | <?= htmlspecialchars($nomePainel) ?></title>
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css" rel="stylesheet">
    <link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css" rel="stylesheet">
    <style>
        :root { 
            /* APLICANDO A COR DO BANCO DE DADOS */
            --primary: <?= $corPrimaria ?>; 
            --bg-body: #151521; 
            --bg-card: #1e1e2d; 
        }
        body { background: var(--bg-body); color: #fff; font-family: 'Segoe UI', sans-serif; overflow-x: hidden; }
        .sidebar { width: 260px; height: 100vh; position: fixed; background: var(--bg-card); padding: 20px; border-right: 1px solid #333; transition: 0.3s; z-index: 1050; overflow-y: auto; }
        .main-content { margin-left: 260px; padding: 30px; transition: 0.3s; }
        .nav-link { color: #a6a6b7; padding: 10px 12px; border-radius: 8px; margin-bottom: 2px; display: flex; align-items: center; gap: 10px; transition: 0.2s; text-decoration: none; font-size: 0.9rem; }
        .nav-link:hover, .nav-link.active { background: var(--primary); color: #fff; }
        .nav-group-title { font-size: 0.75rem; text-transform: uppercase; color: #5e5873; font-weight: 700; margin: 20px 0 10px 12px; }
        .card-custom { background: var(--bg-card); border: 1px solid rgba(255,255,255,0.05); border-radius: 12px; }
        .form-control, .form-select { background: #2b2b40 !important; border: 1px solid #444 !important; color: #fff !important; }
        @media (max-width: 992px) { .sidebar { transform: translateX(-100%); } .sidebar.show { transform: translateX(0); } .main-content { margin-left: 0; padding: 15px; } .mobile-toggle { display: block !important; } }
        .mobile-toggle { display: none; background: none; border: none; color: #fff; font-size: 1.5rem; margin-bottom: 20px; }
        .overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 1040; }
        .overlay.show { display: block; }
    </style>
</head>
<body>

<div class="overlay" id="overlay" onclick="toggleMenu()"></div>

<nav class="sidebar" id="sidebar">
    <h4 class="mb-4 fw-bold text-white text-center"><i class="fas fa-tv text-primary"></i> <?= htmlspecialchars($nomePainel) ?></h4>
    <div class="nav flex-column">
        <a href="index.php" class="nav-link"><i class="fas fa-home"></i> Dashboard</a>
        
        <div class="nav-group-title">Administração</div>
        <a href="gerenciar_perfis.php" class="nav-link"><i class="fas fa-layer-group"></i> Gerenciar Perfis</a>
        <a href="gerenciar_dns.php" class="nav-link active"><i class="fas fa-network-wired"></i> Servidores DNS</a>
        <a href="gerenciar_admins.php" class="nav-link"><i class="fas fa-user-shield"></i> Gestão de Admins</a>
        <a href="gerenciar_email.php" class="nav-link"><i class="fas fa-envelope"></i> Config. E-mail</a>
        <a href="personalizar_painel.php" class="nav-link"><i class="fas fa-paint-brush"></i> Personalizar</a>
        <a href="gerenciar_backups.php" class="nav-link"><i class="fas fa-database"></i> Backups</a>
        <a href="config_geral.php" class="nav-link"><i class="fas fa-cogs"></i> Config. Geral</a>

        <div class="nav-group-title">Operacional</div>
        <a href="revendedores.php" class="nav-link"><i class="fas fa-store"></i> Revendedores</a>
        <a href="clientes.php" class="nav-link"><i class="fas fa-users"></i> Clientes</a>
        <a href="testes.php" class="nav-link"><i class="fas fa-stopwatch"></i> Testes</a>
        <a href="status_online.php" class="nav-link"><i class="fas fa-wifi"></i> Monitor Online</a>
        
        <hr class="border-secondary mt-4"><a href="sair.php" class="nav-link text-danger"><i class="fas fa-sign-out-alt"></i> Sair</a>
    </div>
</nav>

<main class="main-content">
    <button class="mobile-toggle" onclick="toggleMenu()"><i class="fas fa-bars"></i></button>

    <div class="d-flex justify-content-between align-items-center mb-4">
        <h3 class="fw-bold">Gerenciar Servidores/DNS</h3>
        <button class="btn btn-primary" data-bs-toggle="modal" data-bs-target="#modalCriar"><i class="fas fa-plus me-2"></i> Adicionar Servidor</button>
    </div>

    <?php if($msg): ?><div class="alert alert-<?= $msg_tipo ?> alert-dismissible fade show"><?= $msg ?><button class="btn-close" data-bs-dismiss="alert"></button></div><?php endif; ?>

    <div class="card card-custom">
        <div class="table-responsive">
            <table class="table table-dark table-hover mb-0 align-middle">
                <thead>
                    <tr class="text-muted small text-uppercase">
                        <th class="ps-4">Nome</th>
                        <th>URL / IP</th>
                        <th>Porta</th>
                        <th>Protocolo</th>
                        <th>Status</th>
                        <th class="text-end pe-4">Ações</th>
                    </tr>
                </thead>
                <tbody>
                    <?php foreach($lista as $item): 
                        $is_block = ($item['block'] == 'sim');
                    ?>
                    <tr>
                        <td class="ps-4 fw-bold"><?= htmlspecialchars($item['nome']) ?></td>
                        <td><?= htmlspecialchars($item['url']) ?></td>
                        <td><?= htmlspecialchars($item['porta']) ?></td>
                        <td class="text-uppercase"><?= htmlspecialchars($item['protocolo']) ?></td>
                        <td><?= $is_block ? '<span class="badge bg-danger">Bloqueado</span>' : '<span class="badge bg-success">Ativo</span>' ?></td>
                        <td class="text-end pe-4">
                            <form method="POST" class="d-inline">
                                <input type="hidden" name="acao" value="toggle_block"><input type="hidden" name="id" value="<?= $item['id'] ?>">
                                <button class="btn btn-sm <?= $is_block ? 'btn-secondary' : 'btn-warning' ?> rounded-circle me-1"><i class="fas <?= $is_block ? 'fa-lock-open' : 'fa-lock' ?>"></i></button>
                            </form>
                            <button class="btn btn-sm btn-info rounded-circle me-1" onclick='abrirEditar(<?= json_encode($item) ?>)'><i class="fas fa-pen text-white"></i></button>
                            <form method="POST" class="d-inline">
                                <input type="hidden" name="acao" value="excluir"><input type="hidden" name="id" value="<?= $item['id'] ?>">
                                <button class="btn btn-sm btn-danger rounded-circle" onclick="return confirm('Excluir?')"><i class="fas fa-trash"></i></button>
                            </form>
                        </td>
                    </tr>
                    <?php endforeach; ?>
                </tbody>
            </table>
        </div>
    </div>
</main>

<div class="modal fade" id="modalCriar" tabindex="-1">
    <div class="modal-dialog modal-dialog-centered modal-lg">
        <div class="modal-content bg-dark border-secondary">
            <form method="POST" id="formDNS">
                <input type="hidden" name="acao" value="criar" id="inputAcao">
                <input type="hidden" name="id" id="inputId">
                <div class="modal-header border-secondary text-white"><h5 class="modal-title" id="modalTitulo">Adicionar Novo Servidor</h5><button type="button" class="btn-close btn-close-white" data-bs-dismiss="modal"></button></div>
                <div class="modal-body">
                    <div class="row">
                        <div class="col-md-6 mb-3"><label class="form-label text-white">Nome do Painel</label><input type="text" name="nome" id="nome" class="form-control" required></div>
                        <div class="col-md-6 mb-3"><label class="form-label text-white">URL / DNS</label><input type="text" name="url" id="url" class="form-control" required></div>
                    </div>
                    <div class="row">
                        <div class="col-4 mb-3"><label class="form-label text-white">Porta</label><input type="number" name="porta" id="porta" class="form-control" value="80"></div>
                        <div class="col-4 mb-3"><label class="form-label text-white">Protocolo</label><select name="protocolo" id="protocolo" class="form-select"><option value="http">HTTP</option><option value="https">HTTPS</option></select></div>
                        <div class="col-4 mb-3"><label class="form-label text-white">Link Atualização</label><input type="text" name="atualizar" id="atualizar" class="form-control"></div>
                    </div>
                    <div class="row">
                        <div class="col-md-6 mb-3"><label class="form-label text-white">Usuário Interno</label><input type="text" name="usuario" id="usuario" class="form-control"></div>
                        <div class="col-md-6 mb-3"><label class="form-label text-white">Senha Interna</label><input type="text" name="senha" id="senha" class="form-control"></div>
                    </div>
                </div>
                <div class="modal-footer border-secondary"><button type="submit" class="btn btn-primary w-100 fw-bold">SALVAR</button></div>
            </form>
        </div>
    </div>
</div>

<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/js/bootstrap.bundle.min.js"></script>
<script>
    function toggleMenu() { document.getElementById('sidebar').classList.toggle('show'); document.getElementById('overlay').classList.toggle('show'); }
    function abrirEditar(dados) {
        document.getElementById('inputAcao').value = 'editar'; document.getElementById('inputId').value = dados.id;
        document.getElementById('modalTitulo').innerText = 'Editar Servidor';
        document.getElementById('nome').value = dados.nome; document.getElementById('url').value = dados.url;
        document.getElementById('porta').value = dados.porta; document.getElementById('protocolo').value = dados.protocolo;
        document.getElementById('atualizar').value = dados.atualizar; document.getElementById('usuario').value = dados.usuario;
        document.getElementById('senha').value = dados.senha; new bootstrap.Modal(document.getElementById('modalCriar')).show();
    }
</script>
</body>
</html>
