initial commit

.github/workflows/docker.yml

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+name: Build and Push Docker Image
+
+on:
+  push:
+    branches: [main, master]
+    tags: ['v*']
+  pull_request:
+    branches: [main, master]
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to Container Registry
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=ref,event=branch
+            type=ref,event=pr
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=sha
+
+      - name: Build and push
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max

.gitignore

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+node_modules/
+dist/
+*.log
+.env
+.DS_Store

Dockerfile

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+# MetaMesh Plugin: file-info
+# Extracts basic file information (type, MIME, size)
+
+FROM node:20-slim AS builder
+
+WORKDIR /app
+
+COPY package.json tsconfig.json ./
+RUN npm install
+
+COPY src/ ./src/
+RUN npm run build
+
+# Production
+FROM node:20-slim
+
+WORKDIR /app
+
+COPY package.json ./
+RUN npm install --omit=dev
+
+COPY --from=builder /app/dist ./dist
+
+EXPOSE 8080
+
+HEALTHCHECK --interval=30s --timeout=5s --start-period=5s --retries=3 \
+  CMD node -e "require('http').get('http://localhost:8080/health', (r) => process.exit(r.statusCode === 200 ? 0 : 1))"
+
+CMD ["node", "dist/index.js"]

README.md

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+# MetaMesh Plugin: File Info
+
+A MetaMesh plugin that extracts basic file information including type, MIME type, and size.
+
+## Description
+
+This is the first plugin in the processing chain. It extracts fundamental file metadata:
+
+- **File type detection**: Uses magic bytes (`file-type`) with extension fallback
+- **MIME type**: Detected from content or extension
+- **File stats**: Size, name, extension
+
+## Metadata Fields
+
+| Field | Description |
+|-------|-------------|
+| `fileType` | Category: `video`, `audio`, `document`, `subtitle`, `torrent`, `archive`, `other` |
+| `mimeType` | MIME type (e.g., `video/mp4`) |
+| `sizeByte` | File size in bytes |
+| `fileName` | Base filename |
+| `extension` | File extension (lowercase) |
+| `filePath` | Original file path |
+
+## Dependencies
+
+- No plugin dependencies (this runs first)
+
+## Configuration
+
+No configuration required.
+
+## API Endpoints
+
+| Endpoint | Method | Description |
+|----------|--------|-------------|
+| `/health` | GET | Health check |
+| `/manifest` | GET | Plugin manifest |
+| `/configure` | POST | Update configuration |
+| `/process` | POST | Process a file |
+
+## Running Locally
+
+```bash
+npm install
+npm run build
+npm start
+```
+
+## Docker
+
+```bash
+docker build -t metamesh-plugin-file-info .
+docker run -p 8080:8080 metamesh-plugin-file-info
+```
+
+## Environment Variables
+
+| Variable | Default | Description |
+|----------|---------|-------------|
+| `PORT` | `8080` | HTTP server port |
+| `HOST` | `0.0.0.0` | HTTP server host |
+
+## License
+
+MIT

package.json

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+{
+  "name": "@metazla/plugin-file-info",
+  "version": "1.0.0",
+  "description": "MetaMesh plugin: Extracts basic file information (type, MIME, size)",
+  "type": "module",
+  "main": "dist/index.js",
+  "scripts": {
+    "build": "tsc",
+    "start": "node dist/index.js",
+    "dev": "tsx watch src/index.ts"
+  },
+  "dependencies": {
+    "fastify": "^5.0.0",
+    "file-type": "^19.0.0",
+    "mime-types": "^2.1.35"
+  },
+  "devDependencies": {
+    "@types/mime-types": "^2.1.4",
+    "@types/node": "^20.0.0",
+    "tsx": "^4.0.0",
+    "typescript": "^5.3.0"
+  },
+  "engines": {
+    "node": ">=20.0.0"
+  }
+}

src/index.ts

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+/**
+ * MetaMesh Plugin: file-info
+ * Entry point
+ */
+
+import Fastify from 'fastify';
+import type {
+    HealthResponse,
+    ProcessRequest,
+    ProcessResponse,
+    CallbackPayload,
+    ConfigureRequest,
+    ConfigureResponse,
+} from './types.js';
+import { manifest, process as processFile } from './plugin.js';
+
+const app = Fastify({ logger: true });
+let ready = false;
+let pluginConfig: Record<string, unknown> = {};
+
+// Health check
+app.get('/health', async (): Promise<HealthResponse> => ({
+    status: 'healthy',
+    ready,
+    version: manifest.version,
+}));
+
+// Manifest
+app.get('/manifest', async () => manifest);
+
+// Configure
+app.post<{ Body: ConfigureRequest }>('/configure', async (request): Promise<ConfigureResponse> => {
+    try {
+        pluginConfig = request.body.config || {};
+        console.log('[file-info] Configuration updated');
+        return { status: 'ok' };
+    } catch (error) {
+        return { status: 'error', error: error instanceof Error ? error.message : String(error) };
+    }
+});
+
+// Process
+app.post<{ Body: ProcessRequest }>('/process', async (request, reply) => {
+    const { taskId, cid, filePath, callbackUrl, metaCoreUrl } = request.body;
+
+    if (!taskId || !cid || !filePath || !callbackUrl || !metaCoreUrl) {
+        return reply.send({ status: 'rejected', error: 'Missing required fields' } as ProcessResponse);
+    }
+
+    // Process in background (don't await)
+    processFile(request.body, async (payload: CallbackPayload) => {
+        try {
+            await fetch(callbackUrl, {
+                method: 'POST',
+                headers: { 'Content-Type': 'application/json' },
+                body: JSON.stringify(payload),
+            });
+        } catch (error) {
+            console.error('[file-info] Callback error:', error);
+        }
+    }).catch(console.error);
+
+    // Accept immediately
+    return reply.send({ status: 'accepted' } as ProcessResponse);
+});
+
+// Start server
+const port = parseInt(process.env.PORT || '8080', 10);
+const host = process.env.HOST || '0.0.0.0';
+
+app.listen({ port, host }).then(() => {
+    ready = true;
+    console.log(`[file-info] Plugin listening on http://${host}:${port}`);
+});
+
+// Graceful shutdown
+process.on('SIGTERM', async () => {
+    ready = false;
+    await app.close();
+    process.exit(0);
+});

src/meta-core-client.ts

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+/**
+ * meta-core API Client for writing metadata
+ * Fails gracefully if meta-core is unavailable (logs warning, returns without throwing)
+ */
+
+export class MetaCoreClient {
+    constructor(private baseUrl: string) {}
+
+    private async safeFetch(url: string, options: RequestInit): Promise<Response | null> {
+        try {
+            return await fetch(url, { ...options, signal: AbortSignal.timeout(5000) });
+        } catch (error) {
+            console.warn(`[MetaCoreClient] Warning: meta-core unavailable at ${this.baseUrl}`);
+            return null;
+        }
+    }
+
+    async setProperty(hashId: string, key: string, value: string): Promise<void> {
+        const response = await this.safeFetch(`${this.baseUrl}/meta/${hashId}/${key}`, {
+            method: 'PUT',
+            headers: { 'Content-Type': 'application/json' },
+            body: JSON.stringify({ value }),
+        });
+        if (response && !response.ok) {
+            console.warn(`[MetaCoreClient] Failed to set property: ${response.status}`);
+        }
+    }
+
+    async getProperty(hashId: string, key: string): Promise<string | null> {
+        const response = await this.safeFetch(`${this.baseUrl}/meta/${hashId}/${key}`, { method: 'GET' });
+        if (!response || response.status === 404) return null;
+        if (!response.ok) return null;
+        const data = await response.json() as { value?: string };
+        return data.value ?? null;
+    }
+
+    async mergeMetadata(hashId: string, metadata: Record<string, string>): Promise<void> {
+        const response = await this.safeFetch(`${this.baseUrl}/meta/${hashId}`, {
+            method: 'PATCH',
+            headers: { 'Content-Type': 'application/json' },
+            body: JSON.stringify(metadata),
+        });
+        if (response && !response.ok) {
+            console.warn(`[MetaCoreClient] Failed to merge metadata: ${response.status}`);
+        }
+    }
+
+    async deleteProperty(hashId: string, key: string): Promise<void> {
+        const response = await this.safeFetch(`${this.baseUrl}/meta/${hashId}/${key}`, { method: 'DELETE' });
+        if (response && !response.ok && response.status !== 404) {
+            console.warn(`[MetaCoreClient] Failed to delete property: ${response.status}`);
+        }
+    }
+
+    async addToSet(hashId: string, key: string, value: string): Promise<void> {
+        const response = await this.safeFetch(`${this.baseUrl}/meta/${hashId}/_add/${key}`, {
+            method: 'POST',
+            headers: { 'Content-Type': 'application/json' },
+            body: JSON.stringify({ value }),
+        });
+        if (response && !response.ok) {
+            console.warn(`[MetaCoreClient] Failed to add to set: ${response.status}`);
+        }
+    }
+
+    async getMetadata(hashId: string): Promise<Record<string, string>> {
+        const response = await this.safeFetch(`${this.baseUrl}/meta/${hashId}`, { method: 'GET' });
+        if (!response || response.status === 404) return {};
+        if (!response.ok) return {};
+        const data = await response.json() as { metadata?: Record<string, string> };
+        return data.metadata ?? {};
+    }
+}

src/plugin.ts

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+/**
+ * File Info Plugin
+ *
+ * Extracts basic file information: type, MIME type, and size.
+ * This is the first plugin in the processing chain.
+ */
+
+import { stat } from 'fs/promises';
+import { basename, extname } from 'path';
+import { fileTypeFromFile } from 'file-type';
+import { lookup as mimeTypeLookup } from 'mime-types';
+import type { PluginManifest, ProcessRequest, CallbackPayload } from './types.js';
+import { MetaCoreClient } from './meta-core-client.js';
+
+export const manifest: PluginManifest = {
+    id: 'file-info',
+    name: 'File Information',
+    version: '1.0.0',
+    description: 'Extracts basic file information (type, MIME, size)',
+    author: 'MetaMesh',
+    dependencies: [],
+    priority: 10,
+    color: '#607D8B',
+    defaultQueue: 'fast',
+    timeout: 30000,
+    schema: {
+        privateFilePath: {
+            label: 'Original File Path',
+            type: 'string',
+            readonly: true,
+            hint: 'Physical path on disk (used by Stremio addon and FUSE)',
+        },
+        fileType: {
+            label: 'File Type',
+            type: 'string',
+            readonly: true,
+        },
+        mimeType: {
+            label: 'MIME Type',
+            type: 'string',
+            readonly: true,
+        },
+        sizeByte: {
+            label: 'Size (bytes)',
+            type: 'number',
+            readonly: true,
+        },
+        fileName: {
+            label: 'File Name',
+            type: 'string',
+            readonly: true,
+        },
+        extension: {
+            label: 'Extension',
+            type: 'string',
+            readonly: true,
+        },
+    },
+    config: {},
+};
+
+// File type detection based on extension (matching @metazla/filename-tools)
+// Note: Images are classified as 'document' not 'image' per original design
+const EXTENSION_MAPPINGS: Record<string, string> = {
+    // Video
+    'mp4': 'video', 'mkv': 'video', 'webm': 'video', 'avi': 'video',
+    'mov': 'video', 'wmv': 'video', 'flv': 'video', 'm4v': 'video',
+    'mpg': 'video', 'mpeg': 'video', '3gp': 'video', '3g2': 'video',
+    'f4v': 'video', 'm2ts': 'video', 'mts': 'video', 'ts': 'video',
+    'vob': 'video', 'ogm': 'video', 'divx': 'video', 'xvid': 'video',
+    // Audio
+    'mp3': 'audio', 'wav': 'audio', 'flac': 'audio', 'aac': 'audio',
+    'ogg': 'audio', 'm4a': 'audio',
+    // Document (includes images per original design)
+    'pdf': 'document', 'doc': 'document', 'docx': 'document',
+    'ppt': 'document', 'pptx': 'document', 'xls': 'document',
+    'xlsx': 'document', 'txt': 'document', 'rtf': 'document',
+    // Images are classified as 'document' per original library
+    'jpg': 'document', 'jpeg': 'document', 'png': 'document',
+    'gif': 'document', 'bmp': 'document', 'tif': 'document',
+    'tiff': 'document', 'svg': 'document', 'webp': 'document',
+    // Archive
+    'zip': 'archive', 'rar': 'archive', '7z': 'archive',
+    'tar': 'archive', 'gz': 'archive', 'bz2': 'archive', 'xz': 'archive',
+    // Subtitles
+    'srt': 'subtitle', 'sub': 'subtitle', 'sbv': 'subtitle', 'vtt': 'subtitle',
+    // Torrent
+    'torrent': 'torrent',
+};
+
+function getFileTypeFromExtension(ext: string): string {
+    if (!ext) return 'undefined';
+    const lowerExt = ext.toLowerCase();
+    return EXTENSION_MAPPINGS[lowerExt] || 'other';
+}
+
+export async function process(
+    request: ProcessRequest,
+    sendCallback: (payload: CallbackPayload) => Promise<void>
+): Promise<void> {
+    const startTime = Date.now();
+    const metaCore = new MetaCoreClient(request.metaCoreUrl);
+
+    try {
+        const { cid, filePath } = request;
+
+        // Get file stats
+        const stats = await stat(filePath);
+
+        // Get file name and extension
+        const fileName = basename(filePath);
+        const extension = extname(filePath).slice(1).toLowerCase();
+
+        // Determine file type
+        let fileType = getFileTypeFromExtension(extension);
+
+        // Try to get MIME type from file magic bytes
+        let mimeType: string | undefined;
+        try {
+            const detected = await fileTypeFromFile(filePath);
+            if (detected) {
+                mimeType = detected.mime;
+            }
+        } catch {
+            // Fallback to extension-based lookup
+        }
+
+        // Fallback MIME type lookup by extension
+        if (!mimeType) {
+            mimeType = mimeTypeLookup(extension) || 'application/octet-stream';
+        }
+
+        // Prepare metadata
+        const metadata = {
+            fileType,
+            mimeType,
+            sizeByte: String(stats.size),
+            fileName,
+            extension,
+            filePath, // Store the file path for other plugins/services
+        };
+
+        // Write metadata to meta-core
+        await metaCore.mergeMetadata(cid, metadata);
+
+        const duration = Date.now() - startTime;
+        console.log(`[file-info] Processed ${fileName} in ${duration}ms`);
+
+        await sendCallback({
+            taskId: request.taskId,
+            status: 'completed',
+            duration,
+            metadata, // Include metadata in callback as fallback
+        });
+    } catch (error) {
+        const duration = Date.now() - startTime;
+        const errorMessage = error instanceof Error ? error.message : String(error);
+        console.error(`[file-info] Error:`, errorMessage);
+
+        await sendCallback({
+            taskId: request.taskId,
+            status: 'failed',
+            duration,
+            error: errorMessage,
+        });
+    }
+}

src/types.ts

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+/**
+ * MetaMesh Plugin Types
+ */
+
+export interface PluginManifest {
+    id: string;
+    name: string;
+    version: string;
+    description?: string;
+    author?: string;
+    dependencies?: string[];
+    schema?: Record<string, SchemaField>;
+    config?: Record<string, ConfigField>;
+    priority?: number;
+    color?: string;
+    defaultQueue?: 'fast' | 'background';
+    timeout?: number;
+}
+
+export interface SchemaField {
+    label: string;
+    type?: 'string' | 'number' | 'boolean' | 'select' | 'text' | 'array' | 'json' | 'cid';
+    readonly?: boolean;
+    hint?: string;
+}
+
+export interface ConfigField {
+    type: 'string' | 'number' | 'boolean' | 'select';
+    label?: string;
+    required?: boolean;
+    default?: unknown;
+    secret?: boolean;
+}
+
+export interface HealthResponse {
+    status: 'healthy' | 'unhealthy';
+    ready: boolean;
+    version: string;
+}
+
+export interface ProcessRequest {
+    taskId: string;
+    cid: string;
+    filePath: string;
+    callbackUrl: string;
+    metaCoreUrl: string;
+    existingMeta?: Record<string, string>;
+}
+
+export interface ProcessResponse {
+    status: 'accepted' | 'rejected';
+    error?: string;
+}
+
+export interface CallbackPayload {
+    taskId: string;
+    status: 'completed' | 'failed' | 'skipped';
+    duration: number;
+    error?: string;
+    reason?: string;
+    /** Metadata to write (fallback if meta-core unavailable) */
+    metadata?: Record<string, string>;
+}
+
+export interface ConfigureRequest {
+    config: Record<string, unknown>;
+}
+
+export interface ConfigureResponse {
+    status: 'ok' | 'error';
+    error?: string;
+}

tsconfig.json

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+{
+  "compilerOptions": {
+    "target": "ES2022",
+    "module": "NodeNext",
+    "moduleResolution": "NodeNext",
+    "lib": ["ES2022"],
+    "outDir": "./dist",
+    "rootDir": "./src",
+    "strict": true,
+    "esModuleInterop": true,
+    "skipLibCheck": true,
+    "forceConsistentCasingInFileNames": true,
+    "declaration": true,
+    "sourceMap": true
+  },
+  "include": ["src/**/*"],
+  "exclude": ["node_modules", "dist"]
+}