<?php
// 设置默认时区（可选，防止警告）
date_default_timezone_set('Asia/Shanghai');

// ===== 辅助函数：vmess 解析与构建 =====

// 解析一行 vmess 链接，返回 [bool 成功, array 数据]
function parse_vmess_line(string $line): array {
    $line = trim($line);
    if ($line === '' || stripos($line, 'vmess://') !== 0) {
        return [false, null];
    }

    $b64 = substr($line, strlen('vmess://'));
    $b64 = trim($b64);
    if ($b64 === '') {
        return [false, null];
    }

    // 补齐 Base64 的 '=' 填充
    $mod = strlen($b64) % 4;
    if ($mod > 0) {
        $b64 .= str_repeat('=', 4 - $mod);
    }

    $json_str = base64_decode($b64, true);
    if ($json_str === false) {
        return [false, null];
    }

    $data = json_decode($json_str, true);
    if (!is_array($data)) {
        return [false, null];
    }

    return [true, $data];
}

// 将配置重新编码为 vmess 行
function build_vmess_line(array $data): string {
    $json = json_encode($data, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
    $b64  = base64_encode($json);
    return 'vmess://' . $b64;
}

// 标准 vmess 字段定义（显示顺序 + 中文说明）
$vmess_fields = [
    'ps'       => '备注(ps)',
    'add'      => '地址(add)',
    'port'     => '端口(port)',
    'id'       => 'UUID(id)',
    'aid'      => '额外ID(aid)',
    'scy'      => '加密方式(scy)',
    'net'      => '网络(net)',
    'type'     => '伪装类型(type)',
    'host'     => 'Host(host)',
    'path'     => '路径(path)',
    'tls'      => 'TLS(tls)',
    'sni'      => 'SNI(sni)',
    'alpn'     => 'ALPN(alpn)',
    'insecure' => 'insecure',
];

// ===== 控制流程变量 =====
$mode            = 'input'; // input | edit | result
$original_text   = '';
$result_text     = '';
$gost_text       = '';
$vmess_rows      = []; // 仅合法 vmess 行的解析结果
$other_lines     = []; // 非 vmess 行或解析失败的行
$target_ip       = '';
$batch_from      = '';
$batch_to        = '';
$batch_ip_from   = '';
$batch_ip_to     = '';

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $step          = $_POST['step'] ?? 'input';
    $target_ip     = trim($_POST['target_ip'] ?? '');
    $batch_from    = trim($_POST['batch_from'] ?? '');
    $batch_to      = trim($_POST['batch_to'] ?? '');
    $batch_ip_from = trim($_POST['batch_ip_from'] ?? '');
    $batch_ip_to   = trim($_POST['batch_ip_to'] ?? '');

    if ($step === 'upload') {
        // 第一步：用户粘贴 vmess 列表，进入“表格编辑模式”
        $original_text = trim($_POST['content'] ?? '');
        if ($original_text !== '') {
            $lines = preg_split("/\r\n|\n|\r/", $original_text);
            foreach ($lines as $line) {
                $raw = trim($line);
                if ($raw === '') {
                    continue;
                }
                [$ok, $data] = parse_vmess_line($raw);
                if (!$ok) {
                    $other_lines[] = $raw;
                    continue;
                }

                // 拆分成标准字段 + 额外字段
                $fields = [];
                foreach ($vmess_fields as $key => $_label) {
                    $fields[$key] = isset($data[$key]) ? (string)$data[$key] : '';
                }
                $extra = array_diff_key($data, $vmess_fields);

                $vmess_rows[] = [
                    'fields' => $fields,
                    'extra'  => !empty($extra)
                        ? json_encode($extra, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES)
                        : '',
                ];
            }
        }
        $mode = 'edit';
    } elseif ($step === 'save') {
        // 第二步：从表格接收编辑后的数据，生成最终 vmess 列表
        $rows_post   = $_POST['rows'] ?? [];
        $other_lines = [];
        $other_raw   = trim($_POST['other_lines'] ?? '');
        if ($other_raw !== '') {
            $other_lines = preg_split("/\r\n|\n|\r/", $other_raw);
        }

        $lines_out = [];
        $gost_lines_out = [];

        // 从表格重建 JSON
        foreach ($rows_post as $row) {
            $fields = $row['fields'] ?? [];
            $extra_json = $row['extra'] ?? '';

            $data = [];
            foreach ($vmess_fields as $key => $_label) {
                if (isset($fields[$key]) && $fields[$key] !== '') {
                    $data[$key] = $fields[$key];
                }
            }

            if ($extra_json !== '') {
                $extra = json_decode($extra_json, true);
                if (is_array($extra)) {
                    $data = array_merge($data, $extra);
                }
            }

            // 批量替换（提交阶段再兜底跑一遍）
            if ($target_ip !== '') {
                $data['add'] = $target_ip;
            }

            if ($batch_from !== '' && $batch_to !== '') {
                array_walk_recursive($data, function (&$value) use ($batch_from, $batch_to) {
                    if (is_string($value) && $value !== '') {
                        $value = str_replace($batch_from, $batch_to, $value);
                    }
                });
            }

            if ($batch_ip_from !== '' && $batch_ip_to !== '' && isset($data['add'])) {
                $data['add'] = str_replace($batch_ip_from, $batch_ip_to, (string)$data['add']);
            }

            // 构建 vmess 行
            $lines_out[] = build_vmess_line($data);

            // 构建对应的 Gost 配置行（端口使用当前记录的 port 字段）
            $ip_for_gost   = isset($data['add']) ? (string)$data['add'] : '';
            $port_for_gost = isset($data['port']) ? (string)$data['port'] : '';
            if ($ip_for_gost !== '' && $port_for_gost !== '') {
                if (strpos($ip_for_gost, ':') === false) {
                    // IPv4
                    $gost_lines_out[] = 'nonencrypt/' . $port_for_gost . '#' . $ip_for_gost . '#' . $port_for_gost;
                } else {
                    // IPv6，添加方括号
                    $ip = $ip_for_gost;
                    if ($ip[0] !== '[') {
                        $ip = '[' . $ip . ']';
                    }
                    $gost_lines_out[] = 'nonencrypt/' . $port_for_gost . '#' . $ip . '#' . $port_for_gost;
                }
            } else {
                $gost_lines_out[] = '';
            }
        }

        // 把无法解析的其它行也保留在结果中
        foreach ($other_lines as $raw) {
            $raw = trim($raw);
            if ($raw !== '') {
                $lines_out[] = $raw;
            }
        }

        $result_text = implode(PHP_EOL, $lines_out);
        $gost_text   = implode(PHP_EOL, $gost_lines_out);
        $mode        = 'result';
    }
} else {
    // 默认示例文本
    $original_text = "vmess://ew0KICAidiI6ICIyIiwNCiAgInBzIjogIkFsaVBDLUdHWS1TaGFyZS1CZXN0dm0tU0ciLA0KICAiYWRkIjogIjEuMS4xLjEiLA0KICAicG9ydCI6ICIzMzg4OCIsDQogICJpZCI6ICI3N2MwYWFmZC03MTNhLTQwZDUtYmI2MS1mZWMyN2JiMTI0MTEiLA0KICAiYWlkIjogIjAiLA0KICAic2N5IjogImF1dG8iLA0KICAibmV0IjogInRjcCIsDQogICJ0eXBlIjogIm5vbmUiLA0KICAiaG9zdCI6ICIiLA0KICAicGF0aCI6ICIiLA0KICAidGxzIjogIiIsDQogICJzbmkiOiAiIiwNCiAgImFscG4iOiAiIiwNCiAgImZwIjogIiIsDQogICJpbnNlY3VyZSI6ICIwIg0KfQ==";
    $mode          = 'input';
}
?>

<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>vmess 批量编辑与替换工具</title>
    <style>
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background-color: #f4f6f9;
            color: #333;
            margin: 0;
            padding: 20px;
            display: flex;
            justify-content: center;
        }
        .container {
            background-color: #fff;
            width: 100%;
            max-width: 1100px;
            padding: 24px 28px 32px;
            border-radius: 8px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.08);
        }
        h1 {
            text-align: center;
            color: #2c3e50;
            margin: 0 0 20px;
            font-size: 22px;
        }
        h2 {
            font-size: 16px;
            margin: 18px 0 10px;
            color: #2c3e50;
        }
        .form-group {
            margin-bottom: 16px;
        }
        label {
            display: block;
            margin-bottom: 6px;
            font-weight: 600;
            color: #555;
            font-size: 13px;
        }
        input[type="text"] {
            width: 100%;
            padding: 7px 10px;
            border: 1px solid #ddd;
            border-radius: 4px;
            font-size: 13px;
            box-sizing: border-box;
        }
        textarea {
            width: 100%;
            height: 260px;
            padding: 8px 10px;
            border: 1px solid #ddd;
            border-radius: 4px;
            font-family: monospace;
            resize: vertical;
            box-sizing: border-box;
            background-color: #fafafa;
            font-size: 12px;
        }
        .btn-primary {
            background-color: #007bff;
            color: white;
            border: none;
            padding: 10px 20px;
            font-size: 14px;
            border-radius: 4px;
            cursor: pointer;
            transition: background-color 0.25s;
        }
        .btn-primary:hover {
            background-color: #0056b3;
        }
        .btn-secondary {
            background-color: #6c757d;
            color: #fff;
            border: none;
            padding: 6px 10px;
            font-size: 12px;
            border-radius: 4px;
            cursor: pointer;
            margin-right: 6px;
        }
        .btn-secondary:hover {
            background-color: #5a6268;
        }
        .grid-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            margin-top: 12px;
        }
        @media (max-width: 900px) {
            .grid-layout {
                grid-template-columns: 1fr;
            }
        }
        .table-wrapper {
            max-height: 460px;
            overflow: auto;
            border: 1px solid #e0e0e0;
            border-radius: 4px;
            background-color: #fafafa;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 12px;
        }
        thead {
            position: sticky;
            top: 0;
            background-color: #f0f2f5;
            z-index: 1;
        }
        th, td {
            border: 1px solid #e1e1e1;
            padding: 4px 6px;
            text-align: left;
            white-space: nowrap;
        }
        th {
            font-weight: 600;
            font-size: 11px;
        }
        td input[type="text"] {
            width: 140px;
            padding: 3px 5px;
            font-size: 11px;
        }
        td input.cell-short {
            width: 80px;
        }
        td input.cell-long {
            width: 200px;
        }
        .small-hint {
            font-size: 11px;
            color: #888;
            margin-top: 4px;
        }
        .section {
            margin-bottom: 18px;
        }
    </style>
</head>
<body>
<div class="container">
    <h1>vmess 批量编辑与替换工具</h1>

    <?php if ($mode === 'input'): ?>
        <form method="post" action="">
            <input type="hidden" name="step" value="upload">

            <div class="section">
                <h2>① 粘贴 vmess 分享地址（每行一条）</h2>
                <textarea name="content" placeholder="在此粘贴 vmess:// 开头的分享地址，每行一条"><?php echo htmlspecialchars($original_text); ?></textarea>
                <div class="small-hint">提交后会进入类似 Excel 的表格界面，可以逐行编辑字段。</div>
            </div>

            <button type="submit" class="btn-primary">下一步：进入表格编辑</button>
        </form>

    <?php elseif ($mode === 'edit'): ?>
        <form method="post" action="">
            <input type="hidden" name="step" value="save">

            <div class="section">
                <h2>② 全局批量替换设置（可选）</h2>
                <div class="grid-layout">
                    <div>
                        <div class="form-group">
                            <label for="target_ip">统一替换为的新 IP（写入 add 字段）</label>
                            <input type="text" id="target_ip" name="target_ip" value="<?php echo htmlspecialchars($target_ip); ?>" placeholder="例如：192.168.1.1">
                            <div class="small-hint">留空则不修改 IP。</div>
                        </div>
                        <div class="form-group">
                            <label>字符批量替换（作用于所有字段，如备注、路径等）</label>
                            <input type="text" id="batch_from" name="batch_from" value="<?php echo htmlspecialchars($batch_from); ?>" placeholder="原始字符，如 AliPC-GGY">
                            <div style="height:4px;"></div>
                            <input type="text" id="batch_to" name="batch_to" value="<?php echo htmlspecialchars($batch_to); ?>" placeholder="目标字符，如 TX-Haha">
                            <div class="small-hint">
                                点击下方按钮可在当前表格中直接替换，不提交到服务器。
                            </div>
                            <button type="button" class="btn-secondary" onclick="applyBatchReplaceAll()">在表格中应用字符替换</button>
                        </div>
                    </div>
                    <div>
                        <div class="form-group">
                            <label>IP 批量替换（仅作用于地址 add 字段）</label>
                            <input type="text" id="batch_ip_from" name="batch_ip_from" value="<?php echo htmlspecialchars($batch_ip_from); ?>" placeholder="原始 IP 片段，例如 1.1.1.1">
                            <div style="height:4px;"></div>
                            <input type="text" id="batch_ip_to" name="batch_ip_to" value="<?php echo htmlspecialchars($batch_ip_to); ?>" placeholder="目标 IP 片段，例如 8.8.8.8">
                            <div class="small-hint">
                                点击按钮仅在 IP 列（add）中替换，方便从一台机器迁移到另一台。
                            </div>
                            <button type="button" class="btn-secondary" onclick="applyBatchReplaceIP()">在表格中应用 IP 替换</button>
                        </div>
                    </div>
                </div>
            </div>

            <div class="section">
                <h2>③ 表格编辑（类似 Excel，可逐行修改任意字段）</h2>
                <div class="table-wrapper">
                    <table>
                        <thead>
                        <tr>
                            <th>#</th>
                            <?php foreach ($vmess_fields as $key => $label): ?>
                                <th><?php echo htmlspecialchars($label); ?></th>
                            <?php endforeach; ?>
                        </tr>
                        </thead>
                        <tbody>
                        <?php foreach ($vmess_rows as $idx => $row): ?>
                            <tr>
                                <td><?php echo $idx + 1; ?></td>
                                <?php foreach ($vmess_fields as $key => $label): ?>
                                    <?php
                                    $value = $row['fields'][$key] ?? '';
                                    $classes = 'cell-string';
                                    if (in_array($key, ['port', 'aid'], true)) {
                                        $classes .= ' cell-short';
                                    } elseif (in_array($key, ['ps', 'host', 'path', 'id'], true)) {
                                        $classes .= ' cell-long';
                                    }
                                    if ($key === 'add') {
                                        $classes .= ' cell-add';
                                    }
                                    ?>
                                    <td>
                                        <input type="text" name="rows[<?php echo $idx; ?>][fields][<?php echo htmlspecialchars($key); ?>]"
                                               value="<?php echo htmlspecialchars($value); ?>"
                                               class="<?php echo $classes; ?>">
                                    </td>
                                <?php endforeach; ?>
                                <input type="hidden" name="rows[<?php echo $idx; ?>][extra]" value="<?php echo htmlspecialchars($row['extra']); ?>">
                            </tr>
                        <?php endforeach; ?>
                        </tbody>
                    </table>
                </div>
                <?php if (!empty($other_lines)): ?>
                    <div class="small-hint" style="margin-top:6px;">
                        下列行无法识别为 vmess，将原样保留在结果中（如需要可自行编辑后粘贴回上一步）：
                    </div>
                    <textarea readonly><?php echo htmlspecialchars(implode("\n", $other_lines)); ?></textarea>
                    <input type="hidden" name="other_lines" value="<?php echo htmlspecialchars(implode("\n", $other_lines)); ?>">
                <?php else: ?>
                    <input type="hidden" name="other_lines" value="">
                <?php endif; ?>
            </div>

            <div class="section" style="margin-top: 16px;">
                <button type="submit" class="btn-primary">确认提交并生成 vmess 结果</button>
            </div>
        </form>

        <script>
            function applyBatchReplaceAll() {
                var from = document.getElementById('batch_from').value;
                var to = document.getElementById('batch_to').value;
                if (!from) return;
                var inputs = document.querySelectorAll('input.cell-string');
                inputs.forEach(function (input) {
                    if (input.value) {
                        input.value = input.value.split(from).join(to);
                    }
                });
            }

            function applyBatchReplaceIP() {
                var from = document.getElementById('batch_ip_from').value;
                var to = document.getElementById('batch_ip_to').value;
                if (!from || !to) return;
                var inputs = document.querySelectorAll('input.cell-add');
                inputs.forEach(function (input) {
                    if (input.value) {
                        input.value = input.value.split(from).join(to);
                    }
                });
            }
        </script>

    <?php elseif ($mode === 'result'): ?>
        <div class="section">
            <h2>④ 生成结果</h2>
            <div class="grid-layout">
                <div>
                    <label>生成后的 vmess 链接（每行一条，可直接复制使用）</label>
                    <textarea readonly onclick="this.select()" placeholder="结果会显示在这里"><?php echo htmlspecialchars($result_text); ?></textarea>
                </div>
                <div>
                    <label>对应的 Gost 配置（每条记录一行，端口使用当前记录的 port 值）</label>
                    <textarea readonly onclick="this.select()" placeholder="Gost 配置会显示在这里"><?php echo htmlspecialchars($gost_text); ?></textarea>
                    <div class="small-hint">示例：IPv4 => nonencrypt/33888#1.1.1.1#33888；IPv6 => nonencrypt/22777#[2403:2c80::1]#22777（端口都取自各自 vmess 的 port）。</div>
                </div>
            </div>
            <div class="section" style="margin-top: 16px;">
                <form method="post" action="">
                    <input type="hidden" name="step" value="input">
                    <button type="submit" class="btn-primary">返回第①步继续处理其他链接</button>
                </form>
            </div>
        </div>
    <?php endif; ?>
</div>
</body>
</html>