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b/package.json @@ -10,7 +10,8 @@ }, "dependencies": { "fastify": "^5.0.0", - "@metazla/filename-tools": "github:worph/filename-tool" + "@metazla/filename-tools": "github:worph/filename-tool", + "file-type": "^19.0.0" }, "devDependencies": { "@types/node": "^20.0.0", diff --git a/src/index.ts b/src/index.ts index ddfbed2..cafd513 100644 --- a/src/index.ts +++ b/src/index.ts @@ -2,21 +2,24 @@ * MetaMesh Plugin: file-info * * ============================================================================ - * PLUGIN MOUNT ARCHITECTURE - DO NOT MODIFY WITHOUT AUTHORIZATION + * PLUGIN FILE ACCESS ARCHITECTURE - WebDAV * ============================================================================ * - * Each plugin container has exactly 3 mounts (2 for plugins without output): + * Plugins access files via WebDAV served by meta-sort nginx: * - * 1. /files (READ-ONLY) - Shared media files, read access only - * 2. /cache (READ-WRITE) - Plugin-specific cache folder - * 3. /files/plugin/ (READ-WRITE) - Plugin output folder (if needed) + * WEBDAV_URL env var: http://meta-sort-dev/webdav * - * This plugin (file-info) only requires mounts 1 and 2: - * - /files (RO) - to read files for type/size detection - * - /cache (RW) - to cache file info results + * Endpoints: + * GET /webdav/watch/... - Read media files + * GET /webdav/plugin/... - Read plugin output + * PUT /webdav/plugin/... - Write plugin output + * HEAD /webdav/... - Get file stats (size, mtime) * - * SECURITY: Plugins must NEVER write to /files directly. - * All write operations go to /cache or /files/plugin/ only. + * This plugin (file-info) uses: + * - HEAD requests for file size + * - Range GET requests for MIME type detection (magic bytes) + * + * FALLBACK: If WEBDAV_URL is not set, uses direct filesystem access. * * ============================================================================ */ diff --git a/src/plugin.ts b/src/plugin.ts index 8c04beb..544427f 100644 --- a/src/plugin.ts +++ b/src/plugin.ts @@ -10,16 +10,63 @@ * - sizeByte * - fileName * - extension + * + * FILE ACCESS: + * - Uses WebDAV client when WEBDAV_URL is set (containerized mode) + * - Falls back to direct filesystem access (local development) */ import { promises as fs } from 'fs'; import * as path from 'path'; +import { fileTypeFromBuffer } from 'file-type'; import { FileType } from '@metazla/filename-tools'; import type { PluginManifest, ProcessRequest, CallbackPayload } from './types.js'; import { MetaCoreClient } from './meta-core-client.js'; +import { createWebDAVClient, WebDAVClient } from './webdav-client.js'; const fileType = new FileType(); +// Initialize WebDAV client if WEBDAV_URL is set +const webdavClient = createWebDAVClient(); +if (webdavClient) { + console.log('[file-info] Using WebDAV for file access'); +} else { + console.log('[file-info] Using direct filesystem access'); +} + +/** + * Get MIME type from file via WebDAV (reads first 4KB for magic bytes) + */ +async function getMimeTypeViaWebDAV(client: WebDAVClient, filePath: string): Promise { + try { + // Read first 4KB for magic byte detection + const buffer = await client.readBytes(filePath, 0, 4095); + const result = await fileTypeFromBuffer(buffer); + return result?.mime; + } catch (error) { + console.warn(`[file-info] Failed to detect MIME type via WebDAV: ${error}`); + return undefined; + } +} + +/** + * Get file type using MIME type and extension mappings + */ +async function getFileTypeViaWebDAV(client: WebDAVClient, filePath: string): Promise { + const mimeType = await getMimeTypeViaWebDAV(client, filePath); + const extensionType = fileType.getFileTypeFromExtension(filePath); + + if (mimeType) { + // Use the FileType class's mime type mapping + const mimeBasedType = (fileType as any).mimeTypeMappings?.[mimeType]; + if (mimeBasedType && mimeBasedType !== 'undefined') { + return mimeBasedType; + } + } + + return extensionType; +} + export const manifest: PluginManifest = { id: 'file-info', name: 'File Information', @@ -71,30 +118,59 @@ export async function process( try { const { cid, filePath } = request; - // Get file type (video, audio, image, etc.) - matches old FileProcessor - const typeResult = await fileType.getFileType(filePath); + // Extract filename and extension (works for both filesystem and WebDAV) + const fileName = path.basename(filePath); + const extension = path.extname(filePath).slice(1).toLowerCase(); + + let typeResult: string | undefined; + let mimeType: string | undefined; + let fileSize: number; + + if (webdavClient) { + // ============================================================ + // WebDAV Mode: Access files via HTTP + // ============================================================ + + // Get file stats (size) via HTTP HEAD + const stats = await webdavClient.stat(filePath); + fileSize = stats.size; + + // Get MIME type via HTTP Range request (reads first 4KB for magic bytes) + mimeType = await getMimeTypeViaWebDAV(webdavClient, filePath); + + // Get file type from MIME type or extension + typeResult = await getFileTypeViaWebDAV(webdavClient, filePath); + + } else { + // ============================================================ + // Filesystem Mode: Direct file access (local development) + // ============================================================ + + // Get file type (video, audio, image, etc.) + typeResult = await fileType.getFileType(filePath); + + // Get MIME type + mimeType = await fileType.getMimeTypeFromFile(filePath); + + // Get file size + const stats = await fs.stat(filePath); + fileSize = stats.size; + } + + // Store metadata via meta-core API if (typeResult) { await metaCore.setProperty(cid, 'fileType', typeResult); } - - // Get MIME type - matches old FileProcessor - const mimeType = await fileType.getMimeTypeFromFile(filePath); if (mimeType) { await metaCore.setProperty(cid, 'mimeType', mimeType); } - - // Get file size - matches old FileProcessor - const stats = await fs.stat(filePath); - await metaCore.setProperty(cid, 'sizeByte', String(stats.size)); - - // Also store filename and extension for convenience - matches old FileProcessor - const fileName = path.basename(filePath); - const extension = path.extname(filePath).slice(1).toLowerCase(); + await metaCore.setProperty(cid, 'sizeByte', String(fileSize)); await metaCore.setProperty(cid, 'fileName', fileName); await metaCore.setProperty(cid, 'extension', extension); const duration = Date.now() - startTime; - console.log(`[file-info] Processed ${fileName} in ${duration}ms`); + const mode = webdavClient ? 'WebDAV' : 'filesystem'; + console.log(`[file-info] Processed ${fileName} in ${duration}ms (${mode})`); await sendCallback({ taskId: request.taskId, diff --git a/src/webdav-client.ts b/src/webdav-client.ts new file mode 100644 index 0000000..ffa9db3 --- /dev/null +++ b/src/webdav-client.ts @@ -0,0 +1,188 @@ +/** + * WebDAV Client for Plugin File Access + * + * Provides HTTP-based file access to meta-sort's WebDAV endpoint. + * Replaces direct filesystem access for containerized plugins. + */ + +export interface FileStats { + size: number; + mtime?: Date; +} + +export class WebDAVClient { + private baseUrl: string; + + constructor(baseUrl: string) { + // Remove trailing slash if present + this.baseUrl = baseUrl.replace(/\/$/, ''); + } + + /** + * Convert absolute file path to WebDAV URL + * Strips /files prefix and appends to base URL + */ + private toWebDAVUrl(filePath: string): string { + // filePath is like "/files/watch/movie.mkv" + // We need to convert to "http://meta-sort-dev/webdav/watch/movie.mkv" + let relativePath = filePath; + + // Strip /files prefix if present + if (relativePath.startsWith('/files/')) { + relativePath = relativePath.substring(6); // Remove "/files" + } else if (relativePath.startsWith('/files')) { + relativePath = relativePath.substring(6); + } + + // Ensure path starts with / + if (!relativePath.startsWith('/')) { + relativePath = '/' + relativePath; + } + + return this.baseUrl + relativePath; + } + + /** + * Get file stats (size, mtime) via HTTP HEAD request + */ + async stat(filePath: string): Promise { + const url = this.toWebDAVUrl(filePath); + + const response = await fetch(url, { method: 'HEAD' }); + + if (!response.ok) { + throw new Error(`WebDAV HEAD failed for ${filePath}: ${response.status} ${response.statusText}`); + } + + const contentLength = response.headers.get('content-length'); + const lastModified = response.headers.get('last-modified'); + + return { + size: contentLength ? parseInt(contentLength, 10) : 0, + mtime: lastModified ? new Date(lastModified) : undefined, + }; + } + + /** + * Read first N bytes of a file (for magic byte detection) + * Uses HTTP Range request + */ + async readBytes(filePath: string, start: number, end: number): Promise { + const url = this.toWebDAVUrl(filePath); + + const response = await fetch(url, { + method: 'GET', + headers: { + 'Range': `bytes=${start}-${end}`, + }, + }); + + if (!response.ok && response.status !== 206) { + throw new Error(`WebDAV Range GET failed for ${filePath}: ${response.status} ${response.statusText}`); + } + + const arrayBuffer = await response.arrayBuffer(); + return Buffer.from(arrayBuffer); + } + + /** + * Read entire file as buffer (for small files only) + */ + async readFile(filePath: string): Promise { + const url = this.toWebDAVUrl(filePath); + + const response = await fetch(url, { method: 'GET' }); + + if (!response.ok) { + throw new Error(`WebDAV GET failed for ${filePath}: ${response.status} ${response.statusText}`); + } + + const arrayBuffer = await response.arrayBuffer(); + return Buffer.from(arrayBuffer); + } + + /** + * Write file via HTTP PUT + */ + async writeFile(filePath: string, data: Buffer | string): Promise { + const url = this.toWebDAVUrl(filePath); + + const response = await fetch(url, { + method: 'PUT', + body: data, + headers: { + 'Content-Type': 'application/octet-stream', + }, + }); + + if (!response.ok) { + throw new Error(`WebDAV PUT failed for ${filePath}: ${response.status} ${response.statusText}`); + } + } + + /** + * Create directory via HTTP MKCOL + */ + async mkdir(dirPath: string): Promise { + const url = this.toWebDAVUrl(dirPath); + + const response = await fetch(url.endsWith('/') ? url : url + '/', { + method: 'MKCOL', + }); + + // 201 Created or 405 Method Not Allowed (already exists) are both OK + if (!response.ok && response.status !== 405) { + throw new Error(`WebDAV MKCOL failed for ${dirPath}: ${response.status} ${response.statusText}`); + } + } + + /** + * Check if file exists via HTTP HEAD + */ + async exists(filePath: string): Promise { + const url = this.toWebDAVUrl(filePath); + + try { + const response = await fetch(url, { method: 'HEAD' }); + return response.ok; + } catch { + return false; + } + } + + /** + * List directory contents via HTTP GET (returns JSON from nginx autoindex) + */ + async readdir(dirPath: string): Promise { + const url = this.toWebDAVUrl(dirPath); + const finalUrl = url.endsWith('/') ? url : url + '/'; + + const response = await fetch(finalUrl, { + method: 'GET', + headers: { + 'Accept': 'application/json', + }, + }); + + if (!response.ok) { + throw new Error(`WebDAV GET (dir) failed for ${dirPath}: ${response.status} ${response.statusText}`); + } + + const entries = await response.json() as Array<{ name: string; type: string }>; + return entries.map(e => e.name); + } +} + +/** + * Create a WebDAV client from environment variables + */ +export function createWebDAVClient(): WebDAVClient | null { + const webdavUrl = process.env.WEBDAV_URL; + + if (!webdavUrl) { + console.warn('[webdav-client] WEBDAV_URL not set, WebDAV client unavailable'); + return null; + } + + return new WebDAVClient(webdavUrl); +}