USB-RAID-Array/Web/content/ftp/open.php

<?php
// Include this at the top to see potential errors
// Comment out in production
ini_set('display_errors', 1);
error_reporting(E_ALL);

session_start();

if(!isset($_SESSION['uname'])){
    header("location: ../../index.php");
    session_destroy();
    exit;
}

require_once __DIR__ . '/../../config/config.php';
require_once __DIR__ . '/../../includes/workspace.php';
$sftp = initializeSFTP();

$filePath = isset($_GET['file']) ? $_GET['file'] : '';

$content = '';
$fileName = basename($filePath);
$extension = pathinfo($fileName, PATHINFO_EXTENSION);
$editable = false;

$editableExtensions = ['txt', 'html', 'css', 'js', 'php', 'xml', 'json', 'md', 'csv', 'log', 'ini', 'conf', 'sh', 'bat', 'py', 'rb', 'java', 'c', 'cpp', 'h', 'hpp'];

if (!empty($filePath) && $sftp->file_exists($filePath) && !$sftp->is_dir($filePath)) {
    if (in_array(strtolower($extension), $editableExtensions)) {
        $editable = true;

        if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['content']) && isset($_SESSION["upPer"]) && $_SESSION["upPer"] == true) {
            $newContent = $_POST['content'];

            if ($sftp->put($filePath, $newContent)) {
                $saveSuccess = true;
            } else {
                $saveError = "Failed to save changes. Check permissions.";
            }
        }

        $content = $sftp->get($filePath);
        if ($content === false) {
            $error = "Failed to read file contents.";
        }
    } else {
        $error = "This file type is not supported for editing.";
    }
} else {
    $error = "File not found or is a directory.";
}

$showLineNumbers = in_array(strtolower($extension), ['php', 'js', 'html', 'css', 'py', 'java', 'c', 'cpp', 'h', 'hpp', 'rb', 'sh', 'xml', 'json']);

$parentDir = remoteDirname($filePath);
?>
<!DOCTYPE html>
<html lang="en">
<head>
    <title>Edit File - <?= htmlspecialchars($fileName) ?></title>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
    <link rel="icon" href="../../img/favicon.ico" type="image/x-icon">
    <link rel="stylesheet" href="<?= workspaceAsset('../../', 'css/modern.css') ?>">
    <link rel="stylesheet" href="<?= workspaceAsset('../../', 'css/workspace.css') ?>">
    <link rel="stylesheet" href="<?= workspaceAsset('../../', 'content/ftp/css/open.css') ?>">
    <script src="<?= workspaceAsset('../../', 'js/theme.js') ?>"></script>
    <script src="<?= workspaceAsset('../../', 'js/ui.js') ?>" defer></script>
</head>
<?php renderWorkspaceStart([
    'root' => '../../',
    'active' => 'files',
    'section' => 'File editor',
    'eyebrow' => 'File editor',
    'title' => $fileName,
    'description' => 'View and edit text files in your remote workspace.',
    'connected' => true,
    'back' => 'index.php?path=' . urlencode($parentDir),
    'class' => 'editor-page',
]); ?>
<section class="content-panel">
        <?php if (isset($error)): ?>
            <div class="alert alert-danger"><?= $error ?></div>
        <?php elseif ($editable): ?>
            <?php if (isset($saveSuccess)): ?>
                <div class="alert alert-success">File saved successfully!</div>
            <?php endif; ?>

            <?php if (isset($saveError)): ?>
                <div class="alert alert-danger"><?= $saveError ?></div>
            <?php endif; ?>

            <form method="POST" id="editorForm">
                <div class="mb-3">
                    <div class="d-flex justify-content-between align-items-center mb-2">
                        <label for="editor" class="form-label">File Content</label>
                        <?php if (!isset($_SESSION["upPer"]) || $_SESSION["upPer"] != true): ?>
                            <span class="readonly-notice">Read-only mode (you don't have upload permissions)</span>
                        <?php endif; ?>
                    </div>
                    <div class="editor-container">
                        <?php if ($showLineNumbers): ?>
                            <div id="lineNumbers" class="line-numbers"></div>
                        <?php endif; ?>
                        <textarea id="editor" name="content" class="form-control" <?= (!isset($_SESSION["upPer"]) || $_SESSION["upPer"] != true) ? 'readonly' : '' ?>><?= htmlspecialchars($content) ?></textarea>
                    </div>
                </div>

                <?php if (isset($_SESSION["upPer"]) && $_SESSION["upPer"] == true): ?>
                <div class="mb-3">
                    <button type="submit" class="btn btn-primary">Save Changes</button>
                </div>
                <?php endif; ?>
            </form>
        <?php endif; ?>
</section>
<?php renderWorkspaceEnd(); ?>

    <script>
        function updateLineNumbers() {
            const editor = document.getElementById('editor');
            const lineNumbers = document.getElementById('lineNumbers');

            if (!lineNumbers) return;

            const lines = editor.value.split('\n');
            const lineCount = lines.length;

            let html = '';
            for (let i = 1; i <= lineCount; i++) {
                html += i + '<br>';
            }

            lineNumbers.innerHTML = html;

            syncLineNumbersHeight();
            lineNumbers.scrollTop = editor.scrollTop;
        }

        function syncLineNumbersHeight() {
            const editor = document.getElementById('editor');
            const lineNumbers = document.getElementById('lineNumbers');

            if (!lineNumbers || !editor) return;

            lineNumbers.style.height = editor.clientHeight + 'px';
        }

        document.addEventListener('DOMContentLoaded', function() {
            const editor = document.getElementById('editor');
            const lineNumbers = document.getElementById('lineNumbers');

            if (editor && lineNumbers) {
                setTimeout(() => {
                    updateLineNumbers();
                    syncLineNumbersHeight();
                }, 0);

                editor.addEventListener('input', updateLineNumbers);

                editor.addEventListener('keydown', function(e) {
                    if (e.key === 'Tab') {
                        e.preventDefault();

                        const start = this.selectionStart;
                        const end = this.selectionEnd;

                        this.value = this.value.substring(0, start) + '    ' + this.value.substring(end);

                        this.selectionStart = this.selectionEnd = start + 4;

                        updateLineNumbers();
                    }
                });

                editor.addEventListener('scroll', function() {
                    if (lineNumbers) {
                        lineNumbers.scrollTop = this.scrollTop;
                    }
                });

                editor.addEventListener('mouseup', syncLineNumbersHeight);

                const observer = new MutationObserver(function(mutations) {
                    syncLineNumbersHeight();
                });

                observer.observe(editor, {
                    attributes: true,
                    attributeFilter: ['style']
                });

                if (typeof ResizeObserver === 'function') {
                    const resizeObserver = new ResizeObserver(() => {
                        syncLineNumbersHeight();
                    });
                    resizeObserver.observe(editor);
                } else {

                    window.addEventListener('resize', syncLineNumbersHeight);
                }
            }
        });
    </script>
</body>
</html>