{if $error}
    <div class="alert alert-danger">
        <strong>Erro:</strong> {$error}
    </div>
{else}
    <div class="row">
        <div class="col-md-6">
            {if $formatted_config}
                <div class="panel panel-default">
                    <div class="panel-heading">
                        <h3 class="panel-title">
                            <i class="fa fa-qrcode"></i> Código QR
                        </h3>
                    </div>
                    <div class="panel-body text-center">
                        <div id="qrcode" style="display: inline-block; margin-bottom: 10px;"></div>
                        <p class="text-muted">Escaneie este código QR com seu cliente WireGuard</p>
                        <div class="text-center" style="margin-top: 15px;">
                            <button class="btn btn-info btn-sm" onclick="showInstructions()">
                                <i class="fa fa-info-circle"></i> Instruções de Instalação
                            </button>
                        </div>
                    </div>
                </div>
            {else}
                <div class="panel panel-default">
                    <div class="panel-heading">
                        <h3 class="panel-title">
                            <i class="fa fa-qrcode"></i> Código QR
                        </h3>
                    </div>
                    <div class="panel-body text-center">
                        <p class="text-muted">Configuração não disponível</p>
                    </div>
                </div>
            {/if}
        </div>

        <div class="col-md-6">
            <div class="panel panel-default">
                <div class="panel-heading">
                    <h3 class="panel-title">
                        <i class="fa fa-cog"></i> Configuração WireGuard
                    </h3>
                </div>
                <div class="panel-body">
                    {if $formatted_config}
                        <div class="form-group">
                            <label>Arquivo de Configuração:</label>
                            <pre class="wireguard-config" style="background: #f8f9fa;text-align:left; border: 1px solid #dee2e6; border-radius: 4px; padding: 15px; font-family: 'Courier New', monospace; font-size: 13px; line-height: 1.4; color: #333; overflow-x: auto; white-space: pre-wrap; word-wrap: break-word; max-height: 350px; overflow-y: auto;">{$formatted_config|escape}</pre>
                        </div>
                        <div class="text-center">
                            <button class="btn btn-primary" onclick="downloadFormattedConfig()">
                                <i class="fa fa-download"></i> Baixar Configuração
                            </button>
                            <button class="btn btn-default" onclick="copyFormattedConfig()">
                                <i class="fa fa-copy"></i> Copiar para Área de Transferência
                            </button>
                        </div>
                    {else}
                        <p class="text-muted">Configuração não disponível</p>
                    {/if}
                </div>
            </div>
        </div>
    </div>
{/if}

{* Modal de Instruções *}
<div class="modal fade" id="instructionsModal" tabindex="-1" role="dialog">
    <div class="modal-dialog modal-lg" role="document">
        <div class="modal-content">
            <div class="modal-header">
                <h4 class="modal-title">Instruções de Configuração WireGuard</h4>
                <button type="button" class="close" data-dismiss="modal" aria-label="Fechar"><span aria-hidden="true">&times;</span></button>
            </div>
            <div class="modal-body">
                <h5>Dispositivos Móveis (Android/iOS):</h5>
                <ol>
                    <li>Instale o aplicativo WireGuard da Google Play Store ou App Store</li>
                    <li>Abra o aplicativo e toque no botão "+"</li>
                    <li>Selecione "Escanear código QR"</li>
                    <li>Escaneie o código QR exibido acima</li>
                    <li>Dê um nome ao seu túnel e salve</li>
                </ol>

                <h5>Desktop (Windows/macOS/Linux):</h5>
                <ol>
                    <li>Baixe e instale o WireGuard de <a href="https://www.wireguard.com/install/" target="_blank">wireguard.com</a></li>
                    <li>Clique em "Adicionar Túnel" → "Adicionar túnel vazio..."</li>
                    <li>Copie a configuração acima e cole</li>
                    <li>Salve e ative o túnel</li>
                </ol>

                <h5>Linha de Comando (Linux):</h5>
                <ol>
                    <li>Salve a configuração em um arquivo (ex: <code>wg0.conf</code>)</li>
                    <li>Execute: <code>sudo wg-quick up wg0</code></li>
                    <li>Para parar: <code>sudo wg-quick down wg0</code></li>
                </ol>
            </div>
            <div class="modal-footer">
                <button type="button" class="btn btn-default" data-dismiss="modal">Fechar</button>
            </div>
        </div>
    </div>
</div>

    <script src="https://api.qrserver.com/v1/create-qr-code/?size=250x250&format=svg&data=test" style="display:none;"></script>
    <script>
    var configForQR = null;

    function generateQRCode(configText) {
        var qrCodeElement = document.getElementById('qrcode');
        
        if (qrCodeElement && configText && configText.trim() !== '') {
            try {
                var qrUrl = 'https://api.qrserver.com/v1/create-qr-code/?size=250x250&data=' + encodeURIComponent(configText);
                var img = document.createElement('img');
                img.src = qrUrl;
                img.alt = 'WireGuard QR Code';
                img.style.border = '3px solid #ddd';
                img.style.borderRadius = '4px';
                img.onerror = function() {
                    qrCodeElement.innerHTML = '<p class="text-danger">Failed to generate QR code</p>';
                };
                qrCodeElement.innerHTML = '';
                qrCodeElement.appendChild(img);
            } catch (e) {
                console.error('QR code generation failed:', e);
                qrCodeElement.innerHTML = '<p class="text-danger">Failed to generate QR code</p>';
            }
        } else {
            if (qrCodeElement) {
                qrCodeElement.innerHTML = '<p class="text-warning">Configuration not available for QR code</p>';
            }
        }
    }

    {if $formatted_config}
    document.addEventListener('DOMContentLoaded', function() {
        configForQR = {$formatted_config|json_encode};
        generateQRCode(configForQR);
    });
    {/if}

    function downloadFormattedConfig() {
        {if $formatted_config}
        var config = {$formatted_config|json_encode};
        var element = document.createElement('a');
        element.setAttribute('href', 'data:text/plain;charset=utf-8,' + encodeURIComponent(config));
        element.setAttribute('download', '{$peer_name|default:"wireguard"}.conf');
        element.style.display = 'none';
        document.body.appendChild(element);
        element.click();
        document.body.removeChild(element);
        {/if}
    }

    function copyFormattedConfig() {
        {if $formatted_config}
        var config = {$formatted_config|json_encode};
        if (navigator.clipboard && window.isSecureContext) {
            navigator.clipboard.writeText(config).then(function() {
                alert('Configuration copied to clipboard!');
            }).catch(function(err) {
                fallbackCopyTextToClipboard(config);
            });
        } else {
            fallbackCopyTextToClipboard(config);
        }
        {/if}
    }

    function fallbackCopyTextToClipboard(text) {
        var textArea = document.createElement("textarea");
        textArea.value = text;
        textArea.style.top = "0";
        textArea.style.left = "0";
        textArea.style.position = "fixed";
        document.body.appendChild(textArea);
        textArea.focus();
        textArea.select();
        try {
            var successful = document.execCommand('copy');
            if (successful) {
                alert('Configuration copied to clipboard!');
            } else {
                alert('Failed to copy configuration. Please copy manually.');
            }
        } catch (err) {
            alert('Failed to copy configuration. Please copy manually.');
        }
        document.body.removeChild(textArea);
    }

    // Legacy functions for backward compatibility
    function downloadConfig() {
        var textarea = document.querySelector('textarea');
        if (textarea) {
            var config = textarea.value;
            var element = document.createElement('a');
            element.setAttribute('href', 'data:text/plain;charset=utf-8,' + encodeURIComponent(config));
            element.setAttribute('download', '{$peer_name|default:"wireguard"}.conf');
            element.style.display = 'none';
            document.body.appendChild(element);
            element.click();
            document.body.removeChild(element);
        }
    }

    function copyConfig() {
        var textarea = document.querySelector('textarea');
        if (textarea) {
            textarea.select();
            try {
                document.execCommand('copy');
                alert('Configuration copied to clipboard!');
            } catch (err) {
                alert('Failed to copy configuration. Please select and copy manually.');
            }
        }
    }

    function showInstructions() {
        $('#instructionsModal').modal('show');
    }
    </script>

<style>
.panel-heading .fa {
    margin-right: 5px;
}

.center-block {
    display: block;
    margin-left: auto;
    margin-right: auto;
}

code {
    word-break: break-all;
}

.table-condensed td {
    padding: 5px;
}

.modal-body h5 {
    color: #337ab7;
    margin-top: 20px;
    margin-bottom: 10px;
}

.modal-body h5:first-child {
    margin-top: 0;
}

/***** Modal close button alignment *****/
.modal-header {
    position: relative;
}
.modal-header .close {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 28px;
    line-height: 1;
}

.wireguard-config {
    max-height: 350px;
    overflow-y: auto;
}

#qrcode canvas {
    border: 1px solid #ddd;
    border-radius: 4px;
}
</style>