Files
nodewarden/src/services/backup-uploader.ts
T
shuaiplus 0c00114cc8 Update localization files for backup destinations and API client credentials
- Changed references from E3 to S3 in Russian, Simplified Chinese, and Traditional Chinese localization files.
- Updated the corresponding keys and descriptions to reflect the change in backup destination protocols.
- Improved the Vite configuration to dynamically match locale files, simplifying the code for locale handling.
2026-04-30 15:03:05 +08:00

790 lines
30 KiB
TypeScript

import {
BackupDestinationRecord,
BackupDestinationType,
S3BackupDestination,
WebDavBackupDestination,
} from './backup-config';
export interface BackupUploadResult {
provider: BackupDestinationType;
remotePath: string;
}
export interface RemoteBackupItem {
path: string;
name: string;
isDirectory: boolean;
size: number | null;
modifiedAt: string | null;
}
export interface RemoteBackupListResult {
provider: BackupDestinationType;
currentPath: string;
parentPath: string | null;
items: RemoteBackupItem[];
}
export interface RemoteBackupFile {
provider: BackupDestinationType;
remotePath: string;
fileName: string;
contentType: string;
bytes: Uint8Array;
}
export interface RemoteBackupFilePutOptions {
contentType?: string;
}
function isBackupArchiveName(name: string): boolean {
return /\.zip$/i.test(String(name || '').trim());
}
function encodePathSegments(path: string): string {
return path
.split('/')
.filter(Boolean)
.map((segment) => encodeURIComponent(segment))
.join('/');
}
function trimSlashes(value: string): string {
let next = String(value || '');
while (next.startsWith('/')) next = next.slice(1);
while (next.endsWith('/')) next = next.slice(0, -1);
return next;
}
function buildJoinedPath(...segments: string[]): string {
return segments.map(trimSlashes).filter(Boolean).join('/');
}
function normalizeRelativePath(path: string): string {
const normalized = trimSlashes(path).replace(/\\/g, '/');
if (!normalized) return '';
const parts = normalized.split('/').filter(Boolean);
if (parts.some((part) => part === '.' || part === '..')) {
throw new Error('Invalid remote backup path');
}
return parts.join('/');
}
function basename(path: string): string {
const normalized = trimSlashes(path);
if (!normalized) return '';
const parts = normalized.split('/').filter(Boolean);
return parts[parts.length - 1] || '';
}
function parentPath(path: string): string | null {
const normalized = normalizeRelativePath(path);
if (!normalized) return null;
const parts = normalized.split('/');
parts.pop();
return parts.length ? parts.join('/') : '';
}
function sortRemoteItems(items: RemoteBackupItem[]): RemoteBackupItem[] {
return items.slice().sort((a, b) => {
const aIsAttachmentsDir = a.isDirectory && a.name === 'attachments';
const bIsAttachmentsDir = b.isDirectory && b.name === 'attachments';
if (aIsAttachmentsDir !== bIsAttachmentsDir) return aIsAttachmentsDir ? -1 : 1;
if (a.isDirectory !== b.isDirectory) return a.isDirectory ? -1 : 1;
return a.name.localeCompare(b.name, 'en');
});
}
function decodeXmlText(value: string): string {
return value.replace(/&(amp|lt|gt|quot|#39);/g, (_match, entity) => {
switch (entity) {
case 'amp':
return '&';
case 'lt':
return '<';
case 'gt':
return '>';
case 'quot':
return '"';
case '#39':
return "'";
default:
return _match;
}
});
}
function parseHttpDate(value: string): string | null {
const parsed = new Date(value);
return Number.isFinite(parsed.getTime()) ? parsed.toISOString() : null;
}
function extractXmlBlocks(xml: string, tagName: string): string[] {
const pattern = new RegExp(`<(?:[^:>]+:)?${tagName}\\b[^>]*>([\\s\\S]*?)</(?:[^:>]+:)?${tagName}>`, 'gi');
const blocks: string[] = [];
let match: RegExpExecArray | null;
while ((match = pattern.exec(xml))) {
blocks.push(match[1]);
}
return blocks;
}
function extractXmlFirst(xml: string, tagName: string): string | null {
const pattern = new RegExp(`<(?:[^:>]+:)?${tagName}\\b[^>]*>([\\s\\S]*?)</(?:[^:>]+:)?${tagName}>`, 'i');
const match = xml.match(pattern);
return match?.[1] ? decodeXmlText(match[1].trim()) : null;
}
async function sha256Hex(value: Uint8Array | string): Promise<string> {
const bytes = typeof value === 'string' ? new TextEncoder().encode(value) : value;
const digest = await crypto.subtle.digest('SHA-256', bytes);
return Array.from(new Uint8Array(digest)).map((byte) => byte.toString(16).padStart(2, '0')).join('');
}
async function hmacSha256Raw(keyBytes: Uint8Array, message: string): Promise<Uint8Array> {
const key = await crypto.subtle.importKey('raw', keyBytes, { name: 'HMAC', hash: 'SHA-256' }, false, ['sign']);
const signature = await crypto.subtle.sign('HMAC', key, new TextEncoder().encode(message));
return new Uint8Array(signature);
}
function toBasicAuthHeader(username: string, password: string): string {
const token = btoa(`${username}:${password}`);
return `Basic ${token}`;
}
function buildCanonicalQueryString(url: URL): string {
const params = Array.from(url.searchParams.entries()).sort(([aKey, aValue], [bKey, bValue]) => {
if (aKey === bKey) return aValue.localeCompare(bValue);
return aKey.localeCompare(bKey);
});
return params
.map(([key, value]) => `${encodeURIComponent(key)}=${encodeURIComponent(value)}`)
.join('&');
}
async function buildAwsV4Authorization(
method: string,
url: URL,
headers: Record<string, string>,
payloadHashHex: string,
accessKeyId: string,
secretAccessKey: string,
region: string
): Promise<string> {
const amzDate = headers['x-amz-date'];
const shortDate = amzDate.slice(0, 8);
const headerEntries = Object.entries(headers).map(([name, value]) => [name.toLowerCase(), value] as const).sort(([a], [b]) => a.localeCompare(b));
const canonicalHeaders = headerEntries
.map(([name, value]) => `${name}:${String(value).trim().replace(/\s+/g, ' ')}`)
.join('\n');
const signedHeaders = headerEntries.map(([name]) => name).join(';');
const canonicalRequest = [
method.toUpperCase(),
url.pathname || '/',
buildCanonicalQueryString(url),
`${canonicalHeaders}\n`,
signedHeaders,
payloadHashHex,
].join('\n');
const credentialScope = `${shortDate}/${region}/s3/aws4_request`;
const stringToSign = [
'AWS4-HMAC-SHA256',
amzDate,
credentialScope,
await sha256Hex(canonicalRequest),
].join('\n');
const kDate = await hmacSha256Raw(new TextEncoder().encode(`AWS4${secretAccessKey}`), shortDate);
const kRegion = await hmacSha256Raw(kDate, region);
const kService = await hmacSha256Raw(kRegion, 's3');
const kSigning = await hmacSha256Raw(kService, 'aws4_request');
const signatureBytes = await hmacSha256Raw(kSigning, stringToSign);
const signature = Array.from(signatureBytes).map((byte) => byte.toString(16).padStart(2, '0')).join('');
return `AWS4-HMAC-SHA256 Credential=${accessKeyId}/${credentialScope}, SignedHeaders=${signedHeaders}, Signature=${signature}`;
}
function ensureDestinationConfigReady(destination: BackupDestinationRecord): void {
if (destination.type === 'webdav') {
const config = destination.destination as WebDavBackupDestination;
if (!String(config.baseUrl || '').trim()) throw new Error('WebDAV server URL is required');
if (!/^https?:\/\//i.test(String(config.baseUrl || '').trim())) throw new Error('WebDAV server URL must start with http:// or https://');
if (!String(config.username || '').trim()) throw new Error('WebDAV username is required');
if (!String(config.password || '')) throw new Error('WebDAV password is required');
return;
}
if (destination.type === 's3') {
const config = destination.destination as S3BackupDestination;
if (!String(config.endpoint || '').trim()) throw new Error('S3 endpoint is required');
if (!/^https?:\/\//i.test(String(config.endpoint || '').trim())) throw new Error('S3 endpoint must start with http:// or https://');
if (!String(config.bucket || '').trim()) throw new Error('S3 bucket is required');
if (!String(config.accessKeyId || '').trim()) throw new Error('S3 access key is required');
if (!String(config.secretAccessKey || '')) throw new Error('S3 secret key is required');
}
}
function buildWebDavUrl(baseUrl: string, relativePath: string): string {
const trimmedBase = baseUrl.replace(/\/+$/, '');
const normalized = normalizeRelativePath(relativePath);
return normalized ? `${trimmedBase}/${encodePathSegments(normalized)}` : trimmedBase;
}
function webDavFullPath(config: WebDavBackupDestination, relativePath: string): string {
return buildJoinedPath(config.remotePath, normalizeRelativePath(relativePath));
}
async function ensureWebDavDirectory(baseUrl: string, directoryPath: string, authHeader: string): Promise<void> {
const segments = trimSlashes(directoryPath).split('/').filter(Boolean);
let current = '';
for (const segment of segments) {
current = buildJoinedPath(current, segment);
const url = buildWebDavUrl(baseUrl, current);
const response = await fetch(url, {
method: 'MKCOL',
headers: {
Authorization: authHeader,
},
});
if ([200, 201, 204, 301, 302, 405].includes(response.status)) continue;
throw new Error(`WebDAV directory creation failed: ${response.status}`);
}
}
async function ensureWebDavDirectoryCached(
baseUrl: string,
directoryPath: string,
authHeader: string,
ensuredDirectories: Set<string>
): Promise<void> {
const segments = trimSlashes(directoryPath).split('/').filter(Boolean);
let current = '';
for (const segment of segments) {
current = buildJoinedPath(current, segment);
if (ensuredDirectories.has(current)) continue;
const url = buildWebDavUrl(baseUrl, current);
const response = await fetch(url, {
method: 'MKCOL',
headers: {
Authorization: authHeader,
},
});
if ([200, 201, 204, 301, 302, 405].includes(response.status)) {
ensuredDirectories.add(current);
continue;
}
throw new Error(`WebDAV directory creation failed: ${response.status}`);
}
}
async function putToWebDav(
config: WebDavBackupDestination,
relativePath: string,
bytes: Uint8Array,
options: RemoteBackupFilePutOptions = {},
ensuredDirectories?: Set<string>
): Promise<void> {
const authHeader = toBasicAuthHeader(config.username, config.password);
const remoteFilePath = buildJoinedPath(config.remotePath, relativePath);
const remoteDir = parentPath(remoteFilePath);
if (remoteDir) {
if (ensuredDirectories) {
await ensureWebDavDirectoryCached(config.baseUrl, remoteDir, authHeader, ensuredDirectories);
} else {
await ensureWebDavDirectory(config.baseUrl, remoteDir, authHeader);
}
}
const response = await fetch(buildWebDavUrl(config.baseUrl, remoteFilePath), {
method: 'PUT',
headers: {
Authorization: authHeader,
'Content-Type': options.contentType || 'application/octet-stream',
'Content-Length': String(bytes.byteLength),
},
body: bytes,
});
if (!response.ok) {
throw new Error(`WebDAV upload failed: ${response.status}`);
}
}
async function uploadToWebDav(config: WebDavBackupDestination, archive: Uint8Array, fileName: string): Promise<BackupUploadResult> {
await putToWebDav(config, fileName, archive, { contentType: 'application/zip' });
return {
provider: 'webdav',
remotePath: buildJoinedPath(config.remotePath, fileName),
};
}
function parseWebDavResponsePath(baseUrl: string, href: string): string {
const base = new URL(baseUrl);
const target = new URL(href, base);
const basePath = trimSlashes(decodeURIComponent(base.pathname));
const entryPath = trimSlashes(decodeURIComponent(target.pathname));
if (!basePath) return entryPath;
if (entryPath === basePath) return '';
return entryPath.startsWith(`${basePath}/`) ? entryPath.slice(basePath.length + 1) : entryPath;
}
async function listWebDavEntries(config: WebDavBackupDestination, relativePath: string): Promise<RemoteBackupListResult> {
const currentPath = normalizeRelativePath(relativePath);
const targetFullPath = webDavFullPath(config, currentPath);
const authHeader = toBasicAuthHeader(config.username, config.password);
const response = await fetch(buildWebDavUrl(config.baseUrl, targetFullPath), {
method: 'PROPFIND',
headers: {
Authorization: authHeader,
Depth: '1',
'Content-Type': 'application/xml; charset=utf-8',
},
body: `<?xml version="1.0" encoding="utf-8"?><propfind xmlns="DAV:"><prop><resourcetype/><getcontentlength/><getlastmodified/></prop></propfind>`,
});
if (response.status === 404) {
return {
provider: 'webdav',
currentPath,
parentPath: parentPath(currentPath),
items: [],
};
}
if (!response.ok) {
throw new Error(`WebDAV listing failed: ${response.status}`);
}
const xml = await response.text();
const rootFullPath = trimSlashes(config.remotePath);
const items: RemoteBackupItem[] = [];
for (const block of extractXmlBlocks(xml, 'response')) {
const href = extractXmlFirst(block, 'href');
if (!href) continue;
const fullPath = trimSlashes(parseWebDavResponsePath(config.baseUrl, href));
if (!fullPath) continue;
if (fullPath === targetFullPath) continue;
if (rootFullPath && !(fullPath === rootFullPath || fullPath.startsWith(`${rootFullPath}/`))) continue;
const relative = rootFullPath
? fullPath === rootFullPath
? ''
: fullPath.slice(rootFullPath.length + 1)
: fullPath;
if (!relative) continue;
const directParent = parentPath(relative);
if ((directParent || '') !== currentPath) continue;
const resourceTypeBlock = extractXmlFirst(block, 'resourcetype') || '';
const isDirectory = /<(?:[^:>]+:)?collection\b/i.test(resourceTypeBlock);
const sizeRaw = extractXmlFirst(block, 'getcontentlength');
const modifiedAtRaw = extractXmlFirst(block, 'getlastmodified');
items.push({
path: relative,
name: basename(relative) || relative,
isDirectory,
size: !isDirectory && sizeRaw && Number.isFinite(Number(sizeRaw)) ? Number(sizeRaw) : null,
modifiedAt: modifiedAtRaw ? parseHttpDate(modifiedAtRaw) : null,
});
}
return {
provider: 'webdav',
currentPath,
parentPath: parentPath(currentPath),
items: sortRemoteItems(items),
};
}
async function downloadFromWebDav(config: WebDavBackupDestination, relativePath: string): Promise<RemoteBackupFile> {
const normalized = normalizeRelativePath(relativePath);
if (!normalized || normalized.endsWith('/')) {
throw new Error('Please select a backup file');
}
const authHeader = toBasicAuthHeader(config.username, config.password);
const remotePath = webDavFullPath(config, normalized);
const response = await fetch(buildWebDavUrl(config.baseUrl, remotePath), {
method: 'GET',
headers: {
Authorization: authHeader,
},
});
if (!response.ok) {
throw new Error(`WebDAV download failed: ${response.status}`);
}
return {
provider: 'webdav',
remotePath: normalized,
fileName: basename(normalized) || 'backup.zip',
contentType: String(response.headers.get('Content-Type') || 'application/zip').trim() || 'application/zip',
bytes: new Uint8Array(await response.arrayBuffer()),
};
}
async function deleteFromWebDav(config: WebDavBackupDestination, relativePath: string): Promise<void> {
const authHeader = toBasicAuthHeader(config.username, config.password);
const remotePath = webDavFullPath(config, relativePath);
const response = await fetch(buildWebDavUrl(config.baseUrl, remotePath), {
method: 'DELETE',
headers: {
Authorization: authHeader,
},
});
if (!response.ok && response.status !== 404) {
throw new Error(`WebDAV delete failed: ${response.status}`);
}
}
async function existsInWebDav(config: WebDavBackupDestination, relativePath: string): Promise<boolean> {
const authHeader = toBasicAuthHeader(config.username, config.password);
const remotePath = webDavFullPath(config, relativePath);
const response = await fetch(buildWebDavUrl(config.baseUrl, remotePath), {
method: 'HEAD',
headers: {
Authorization: authHeader,
},
});
if (response.status === 404) return false;
if (!response.ok) {
throw new Error(`WebDAV existence check failed: ${response.status}`);
}
return true;
}
function s3BucketBaseUrl(config: S3BackupDestination): URL {
return new URL(`${config.endpoint.replace(/\/+$/, '')}/${encodeURIComponent(config.bucket)}`);
}
function normalizeS3ObjectKey(config: S3BackupDestination, relativePath: string): string {
return buildJoinedPath(config.rootPath, normalizeRelativePath(relativePath));
}
async function signedS3Request(
config: S3BackupDestination,
method: 'GET' | 'PUT' | 'DELETE' | 'HEAD',
url: URL,
body?: Uint8Array,
contentType?: string
): Promise<Response> {
const payloadHashHex = await sha256Hex(body || new Uint8Array());
const amzDate = new Date().toISOString().replace(/[:-]|\.\d{3}/g, '');
const headers: Record<string, string> = {
host: url.host,
'x-amz-content-sha256': payloadHashHex,
'x-amz-date': amzDate,
};
if (method === 'PUT') headers['content-type'] = contentType || 'application/octet-stream';
const authorization = await buildAwsV4Authorization(
method,
url,
headers,
payloadHashHex,
config.accessKeyId,
config.secretAccessKey,
config.region || 'auto'
);
return fetch(url.toString(), {
method,
headers: {
Authorization: authorization,
'X-Amz-Content-Sha256': headers['x-amz-content-sha256'],
'X-Amz-Date': headers['x-amz-date'],
...(method === 'PUT' ? { 'Content-Type': headers['content-type'] } : {}),
},
body,
});
}
async function putToS3(
config: S3BackupDestination,
relativePath: string,
bytes: Uint8Array,
options: RemoteBackupFilePutOptions = {}
): Promise<void> {
const objectKey = normalizeS3ObjectKey(config, relativePath);
const url = new URL(`${s3BucketBaseUrl(config).toString()}/${encodePathSegments(objectKey)}`);
const response = await signedS3Request(config, 'PUT', url, bytes, options.contentType);
if (!response.ok) {
throw new Error(`S3 upload failed: ${response.status}`);
}
}
async function uploadToS3(config: S3BackupDestination, archive: Uint8Array, fileName: string): Promise<BackupUploadResult> {
await putToS3(config, fileName, archive, { contentType: 'application/zip' });
return {
provider: 's3',
remotePath: normalizeS3ObjectKey(config, fileName),
};
}
async function listS3Entries(config: S3BackupDestination, relativePath: string): Promise<RemoteBackupListResult> {
const currentPath = normalizeRelativePath(relativePath);
const targetPrefixBase = normalizeS3ObjectKey(config, currentPath);
const targetPrefix = trimSlashes(targetPrefixBase) ? `${trimSlashes(targetPrefixBase)}/` : '';
const url = s3BucketBaseUrl(config);
url.searchParams.set('list-type', '2');
url.searchParams.set('delimiter', '/');
if (targetPrefix) url.searchParams.set('prefix', targetPrefix);
const response = await signedS3Request(config, 'GET', url);
if (!response.ok) {
throw new Error(`S3 listing failed: ${response.status}`);
}
const xml = await response.text();
const rootPrefix = trimSlashes(config.rootPath);
const items: RemoteBackupItem[] = [];
for (const prefix of extractXmlBlocks(xml, 'CommonPrefixes')) {
const fullPrefix = trimSlashes(extractXmlFirst(prefix, 'Prefix') || '');
if (!fullPrefix) continue;
const relative = rootPrefix
? fullPrefix === rootPrefix
? ''
: fullPrefix.startsWith(`${rootPrefix}/`)
? fullPrefix.slice(rootPrefix.length + 1)
: ''
: fullPrefix;
const normalizedRelative = trimSlashes(relative);
if (!normalizedRelative) continue;
const itemPath = normalizedRelative.replace(/\/+$/, '');
if ((parentPath(itemPath) || '') !== currentPath) continue;
items.push({
path: itemPath,
name: basename(itemPath) || itemPath,
isDirectory: true,
size: null,
modifiedAt: null,
});
}
for (const content of extractXmlBlocks(xml, 'Contents')) {
const fullKey = trimSlashes(extractXmlFirst(content, 'Key') || '');
if (!fullKey || (targetPrefix && fullKey === trimSlashes(targetPrefix))) continue;
const relative = rootPrefix
? fullKey.startsWith(`${rootPrefix}/`)
? fullKey.slice(rootPrefix.length + 1)
: ''
: fullKey;
const normalizedRelative = trimSlashes(relative);
if (!normalizedRelative || (parentPath(normalizedRelative) || '') !== currentPath) continue;
items.push({
path: normalizedRelative,
name: basename(normalizedRelative) || normalizedRelative,
isDirectory: false,
size: Number(extractXmlFirst(content, 'Size') || 0) || null,
modifiedAt: parseHttpDate(extractXmlFirst(content, 'LastModified') || '') || null,
});
}
const deduped = new Map<string, RemoteBackupItem>();
for (const item of items) deduped.set(`${item.isDirectory ? 'd' : 'f'}:${item.path}`, item);
return {
provider: 's3',
currentPath,
parentPath: parentPath(currentPath),
items: sortRemoteItems(Array.from(deduped.values())),
};
}
async function downloadFromS3(config: S3BackupDestination, relativePath: string): Promise<RemoteBackupFile> {
const normalized = normalizeRelativePath(relativePath);
if (!normalized || normalized.endsWith('/')) {
throw new Error('Please select a backup file');
}
const objectKey = normalizeS3ObjectKey(config, normalized);
const url = new URL(`${s3BucketBaseUrl(config).toString()}/${encodePathSegments(objectKey)}`);
const response = await signedS3Request(config, 'GET', url);
if (!response.ok) {
throw new Error(`S3 download failed: ${response.status}`);
}
return {
provider: 's3',
remotePath: normalized,
fileName: basename(normalized) || 'backup.zip',
contentType: String(response.headers.get('Content-Type') || 'application/zip').trim() || 'application/zip',
bytes: new Uint8Array(await response.arrayBuffer()),
};
}
async function deleteFromS3(config: S3BackupDestination, relativePath: string): Promise<void> {
const objectKey = normalizeS3ObjectKey(config, relativePath);
const url = new URL(`${s3BucketBaseUrl(config).toString()}/${encodePathSegments(objectKey)}`);
const response = await signedS3Request(config, 'DELETE', url);
if (!response.ok && response.status !== 404) {
throw new Error(`S3 delete failed: ${response.status}`);
}
}
async function existsInS3(config: S3BackupDestination, relativePath: string): Promise<boolean> {
const objectKey = normalizeS3ObjectKey(config, relativePath);
const url = new URL(`${s3BucketBaseUrl(config).toString()}/${encodePathSegments(objectKey)}`);
const response = await signedS3Request(config, 'HEAD', url);
if (response.status === 404) return false;
if (!response.ok) {
throw new Error(`S3 existence check failed: ${response.status}`);
}
return true;
}
interface ConfiguredDestinationAdapter {
provider: 'webdav' | 's3';
config: WebDavBackupDestination | S3BackupDestination;
upload: (config: WebDavBackupDestination | S3BackupDestination, archive: Uint8Array, fileName: string) => Promise<BackupUploadResult>;
putFile: (config: WebDavBackupDestination | S3BackupDestination, relativePath: string, bytes: Uint8Array, options?: RemoteBackupFilePutOptions) => Promise<void>;
list: (config: WebDavBackupDestination | S3BackupDestination, relativePath: string) => Promise<RemoteBackupListResult>;
download: (config: WebDavBackupDestination | S3BackupDestination, relativePath: string) => Promise<RemoteBackupFile>;
deleteFile: (config: WebDavBackupDestination | S3BackupDestination, relativePath: string) => Promise<void>;
exists: (config: WebDavBackupDestination | S3BackupDestination, relativePath: string) => Promise<boolean>;
}
export interface RemoteBackupTransferSession {
provider: BackupDestinationType;
uploadArchive(archive: Uint8Array, fileName: string): Promise<BackupUploadResult>;
putFile(relativePath: string, bytes: Uint8Array, options?: RemoteBackupFilePutOptions): Promise<void>;
list(relativePath: string): Promise<RemoteBackupListResult>;
download(relativePath: string): Promise<RemoteBackupFile>;
deleteFile(relativePath: string): Promise<void>;
exists(relativePath: string): Promise<boolean>;
}
function resolveConfiguredDestinationAdapter(
destination: BackupDestinationRecord
): ConfiguredDestinationAdapter {
ensureDestinationConfigReady(destination);
if (destination.type === 'webdav') {
return {
provider: 'webdav',
config: destination.destination as WebDavBackupDestination,
upload: (config, archive, fileName) => uploadToWebDav(config as WebDavBackupDestination, archive, fileName),
putFile: (config, relativePath, bytes, options) => putToWebDav(config as WebDavBackupDestination, relativePath, bytes, options),
list: (config, relativePath) => listWebDavEntries(config as WebDavBackupDestination, relativePath),
download: (config, relativePath) => downloadFromWebDav(config as WebDavBackupDestination, relativePath),
deleteFile: (config, relativePath) => deleteFromWebDav(config as WebDavBackupDestination, relativePath),
exists: (config, relativePath) => existsInWebDav(config as WebDavBackupDestination, relativePath),
};
}
if (destination.type === 's3') {
return {
provider: 's3',
config: destination.destination as S3BackupDestination,
upload: (config, archive, fileName) => uploadToS3(config as S3BackupDestination, archive, fileName),
putFile: (config, relativePath, bytes, options) => putToS3(config as S3BackupDestination, relativePath, bytes, options),
list: (config, relativePath) => listS3Entries(config as S3BackupDestination, relativePath),
download: (config, relativePath) => downloadFromS3(config as S3BackupDestination, relativePath),
deleteFile: (config, relativePath) => deleteFromS3(config as S3BackupDestination, relativePath),
exists: (config, relativePath) => existsInS3(config as S3BackupDestination, relativePath),
};
}
throw new Error('Unsupported backup destination type');
}
export function createRemoteBackupTransferSession(destination: BackupDestinationRecord): RemoteBackupTransferSession {
const adapter = resolveConfiguredDestinationAdapter(destination);
const ensuredDirectories = adapter.provider === 'webdav' ? new Set<string>() : null;
const putFile = async (relativePath: string, bytes: Uint8Array, options: RemoteBackupFilePutOptions = {}): Promise<void> => {
const normalized = normalizeRelativePath(relativePath);
if (adapter.provider === 'webdav' && ensuredDirectories) {
await putToWebDav(adapter.config as WebDavBackupDestination, normalized, bytes, options, ensuredDirectories);
return;
}
await adapter.putFile(adapter.config, normalized, bytes, options);
};
return {
provider: adapter.provider,
uploadArchive: async (archive: Uint8Array, fileName: string) => {
await putFile(fileName, archive, { contentType: 'application/zip' });
return {
provider: adapter.provider,
remotePath: adapter.provider === 'webdav'
? buildJoinedPath((adapter.config as WebDavBackupDestination).remotePath, fileName)
: normalizeS3ObjectKey(adapter.config as S3BackupDestination, fileName),
};
},
putFile,
list: async (relativePath: string) => adapter.list(adapter.config, relativePath),
download: async (relativePath: string) => adapter.download(adapter.config, relativePath),
deleteFile: async (relativePath: string) => adapter.deleteFile(adapter.config, normalizeRelativePath(relativePath)),
exists: async (relativePath: string) => adapter.exists(adapter.config, normalizeRelativePath(relativePath)),
};
}
export async function uploadBackupArchive(
destination: BackupDestinationRecord,
archive: Uint8Array,
fileName: string
): Promise<BackupUploadResult> {
return createRemoteBackupTransferSession(destination).uploadArchive(archive, fileName);
}
export async function listRemoteBackupEntries(destination: BackupDestinationRecord, relativePath: string): Promise<RemoteBackupListResult> {
return createRemoteBackupTransferSession(destination).list(relativePath);
}
export async function downloadRemoteBackupFile(destination: BackupDestinationRecord, relativePath: string): Promise<RemoteBackupFile> {
return createRemoteBackupTransferSession(destination).download(relativePath);
}
export async function deleteRemoteBackupFile(destination: BackupDestinationRecord, relativePath: string): Promise<void> {
const normalized = ensureRemoteRestoreCandidate(relativePath);
await createRemoteBackupTransferSession(destination).deleteFile(normalized);
}
export async function remoteBackupFileExists(destination: BackupDestinationRecord, relativePath: string): Promise<boolean> {
const normalized = normalizeRelativePath(relativePath);
return createRemoteBackupTransferSession(destination).exists(normalized);
}
export async function uploadRemoteBackupFile(
destination: BackupDestinationRecord,
relativePath: string,
bytes: Uint8Array,
options: RemoteBackupFilePutOptions = {}
): Promise<void> {
const normalized = normalizeRelativePath(relativePath);
await createRemoteBackupTransferSession(destination).putFile(normalized, bytes, options);
}
function compareBackupItemsByRecency(a: RemoteBackupItem, b: RemoteBackupItem, preferredFileName?: string): number {
if (preferredFileName) {
const aPreferred = a.name === preferredFileName ? 1 : 0;
const bPreferred = b.name === preferredFileName ? 1 : 0;
if (aPreferred !== bPreferred) return bPreferred - aPreferred;
}
const aTime = a.modifiedAt ? new Date(a.modifiedAt).getTime() : 0;
const bTime = b.modifiedAt ? new Date(b.modifiedAt).getTime() : 0;
if (aTime !== bTime) return bTime - aTime;
return b.name.localeCompare(a.name, 'en');
}
export async function pruneRemoteBackupArchives(
destination: BackupDestinationRecord,
retentionCount: number | null,
preferredFileName?: string
): Promise<number> {
if (retentionCount === null) return 0;
const adapter = resolveConfiguredDestinationAdapter(destination);
const listing = await adapter.list(adapter.config, '');
const backupFiles = listing.items
.filter((item) => !item.isDirectory && isBackupArchiveName(item.name))
.sort((a, b) => compareBackupItemsByRecency(a, b, preferredFileName));
if (backupFiles.length <= retentionCount) return 0;
for (const item of backupFiles.slice(retentionCount)) {
await adapter.deleteFile(adapter.config, item.path);
}
return backupFiles.length - retentionCount;
}
export function ensureRemoteRestoreCandidate(relativePath: string): string {
const normalized = normalizeRelativePath(relativePath);
if (!normalized || !/\.zip$/i.test(normalized)) {
throw new Error('Please select a backup ZIP file');
}
return normalized;
}