### Teleportal Server Setup (TypeScript)

Source: https://teleportal.tools/getting-started

Sets up a basic Teleportal server using crossws for WebSocket handling and Teleportal's server and storage modules. It initializes an in-memory storage and configures WebSocket handlers with user context extraction.

```typescript
import { serve } from "crossws/server";
import { Server } from "teleportal/server";
import { YDocStorage } from "teleportal/storage";
import { getWebsocketHandlers } from "teleportal/websocket-server";


// Create a Teleportal server with in-memory storage
const server = new Server({
  storage: new YDocStorage(),
});


// Set up WebSocket handlers
serve({
  websocket: getWebsocketHandlers({
    server,
    onUpgrade: async () => {
      // Extract user context from the request
      // In production, you'd verify authentication here
      return {
        context: { userId: "user-123", room: "workspace-1" },
      };
    },
  }),
  fetch: () => new Response("Not found", { status: 404 }),
});

```

--------------------------------

### Configure SQLite Storage with unstorage

Source: https://teleportal.tools/guides/persistent-storage

Demonstrates setting up unstorage to use SQLite for persistent storage. This example initializes createStorage with the SQLite driver, specifying the path to the database file.

```javascript
import sqliteDriver from "unstorage/drivers/sqlite";


const storage = createStorage({
  driver: sqliteDriver({
    db: "./teleportal.db",
  }),
});

```

--------------------------------

### Teleportal Client Setup with Fallback Connection

Source: https://teleportal.tools/guides/fallback-connection

Demonstrates the client-side setup using Teleportal's Provider, which automatically attempts a WebSocket connection and falls back to HTTP if the WebSocket connection fails. It shows how to create the provider instance and check the active connection type.

```typescript
import { Provider } from "teleportal/providers";


// Provider automatically tries WebSocket first, falls back to HTTP
const provider = await Provider.create({
  url: "wss://example.com", // Tries WebSocket first
  document: "my-document",
});


// Check which connection type is active
console.log(provider.connectionType); // "websocket" | "http" | null


await provider.synced;

```

--------------------------------

### UnencryptedDocumentStorage Implementation Example

Source: https://teleportal.tools/advanced/custom-storage

An example demonstrating how to extend `UnencryptedDocumentStorage` to implement a custom storage solution.

```APIDOC
## Example: Custom DocumentStorage

### Description
This example shows how to create a custom document storage implementation by extending the `UnencryptedDocumentStorage` class. It demonstrates overriding methods to interact with a hypothetical backend (`myBackend`).

### Class Definition
```typescript
import type {
  DocumentStorage,
  Document,
  DocumentMetadata,
  Update,
} from "teleportal/storage";
import { UnencryptedDocumentStorage } from "teleportal/storage/unencrypted";
import { mergeUpdates, getStateVectorFromUpdate } from "teleportal/storage";

// Assume myBackend is an existing module for interacting with your storage
// declare const myBackend: any;

export class MyCustomDocumentStorage extends UnencryptedDocumentStorage {
  readonly type = "document-storage" as const;
  storageType: "unencrypted" = "unencrypted";

  async handleUpdate(documentId: string, update: Update): Promise<void> {
    // Store update in your backend
    const existing = await this.getDocument(documentId);
    if (existing) {
      const merged = mergeUpdates([existing.content.update, update]);
      await myBackend.storeUpdate(documentId, merged);
    } else {
      await myBackend.storeUpdate(documentId, update);
    }
  }

  async getDocument(documentId: string): Promise<Document | null> {
    // Retrieve from your backend
    const update = await myBackend.getUpdate(documentId);
    if (!update) return null;

    // Build document from your storage
    return {
      id: documentId,
      metadata: await this.getDocumentMetadata(documentId),
      content: {
        update,
        stateVector: getStateVectorFromUpdate(update),
      },
    };
  }

  async writeDocumentMetadata(
    documentId: string,
    metadata: DocumentMetadata
  ): Promise<void> {
    await myBackend.storeMetadata(documentId, metadata);
  }

  async getDocumentMetadata(documentId: string): Promise<DocumentMetadata> {
    return (await myBackend.getMetadata(documentId)) ?? {
      files: [],
      milestones: [],
      createdAt: Date.now(),
      updatedAt: Date.now(),
    };
  }

  async deleteDocument(documentId: string): Promise<void> {
    await myBackend.deleteDocument(documentId);
  }

  async transaction<T>(
    documentId: string,
    cb: () => Promise<T>
  ): Promise<T> {
    // Implement transaction logic for your backend
    return await myBackend.transaction(documentId, cb);
  }
}
```
```

--------------------------------

### Teleportal Server Setup with WebSocket and HTTP

Source: https://teleportal.tools/guides/fallback-connection

Sets up a Teleportal server to handle both WebSocket and HTTP transports. It initializes the server, defines WebSocket handlers with an upgrade callback, and HTTP handlers with a connection callback, then starts the server to listen for incoming connections.

```typescript
import { serve } from "crossws/server";
import { Server } from "teleportal/server";
import { getWebsocketHandlers } from "teleportal/websocket-server";
import { getHttpHandlers } from "teleportal/http";


const server = new Server({
  getStorage: async (ctx) => {
    // Your storage implementation
    return documentStorage;
  },
});


// WebSocket handlers
const wsHandlers = getWebsocketHandlers({
  server,
  onUpgrade: async () => {
    return {
      context: { userId: "user-123" },
    };
  },
});


// HTTP handlers
const httpHandlers = getHttpHandlers({
  server,
  onConnect: async (request) => {
    return {
      context: { userId: "user-123" },
    };
  },
});


serve({
  websocket: wsHandlers,
  fetch: httpHandlers,
});

```

--------------------------------

### Custom DocumentStorage Implementation Example

Source: https://teleportal.tools/advanced/custom-storage

An example of a custom `DocumentStorage` implementation extending `UnencryptedDocumentStorage`. It demonstrates how to integrate a custom backend for storing and retrieving document updates, metadata, and handling transactions. This example assumes the existence of a `myBackend` object for persistence.

```typescript
import type {
  DocumentStorage,
  Document,
  DocumentMetadata,
  Update,
} from "teleportal/storage";
import { UnencryptedDocumentStorage } from "teleportal/storage/unencrypted";
import { mergeUpdates, getStateVectorFromUpdate } from "teleportal/storage";


export class MyCustomDocumentStorage extends UnencryptedDocumentStorage {
  readonly type = "document-storage" as const;
  storageType: "unencrypted" = "unencrypted";


  async handleUpdate(documentId: string, update: Update): Promise<void> {
    // Store update in your backend
    // You might want to merge with existing updates
    const existing = await this.getDocument(documentId);
    if (existing) {
      const merged = mergeUpdates([existing.content.update, update]);
      await myBackend.storeUpdate(documentId, merged);
    } else {
      await myBackend.storeUpdate(documentId, update);
    }
  }


  async getDocument(documentId: string): Promise<Document | null> {
    // Retrieve from your backend
    const update = await myBackend.getUpdate(documentId);
    if (!update) return null;


    // Build document from your storage
    return {
      id: documentId,
      metadata: await this.getDocumentMetadata(documentId),
      content: {
        update,
        stateVector: getStateVectorFromUpdate(update),
      },
    };
  }


  async writeDocumentMetadata(
    documentId: string,
    metadata: DocumentMetadata
  ): Promise<void> {
    await myBackend.storeMetadata(documentId, metadata);
  }


  async getDocumentMetadata(documentId: string): Promise<DocumentMetadata> {
    return (await myBackend.getMetadata(documentId)) ?? {
      files: [],
      milestones: [],
      createdAt: Date.now(),
      updatedAt: Date.now(),
    };
  }


  async deleteDocument(documentId: string): Promise<void> {
    await myBackend.deleteDocument(documentId);
  }


  async transaction<T>(
    documentId: string,
    cb: () => Promise<T>
  ): Promise<T> {
    // Implement transaction logic for your backend
    // This might use database transactions, distributed locks, etc.
    return await myBackend.transaction(documentId, cb);
  }
}
```

--------------------------------

### Implement Custom Authentication for Teleportal

Source: https://teleportal.tools/integration

Provides an example of implementing custom authentication logic within Teleportal's `onUpgrade` handler. This allows integration with existing authentication systems.

```javascript
// Custom auth
const handlers = getWebsocketHandlers({
  server,
  onUpgrade: async (request) => {
    const user = await verifySession(request);
    if (!user) throw new Response("Unauthorized", { status: 401 });
    return { context: { userId: user.id } };
  },
});

```

--------------------------------

### Teleportal Client Connection and Y.js Sync (TypeScript)

Source: https://teleportal.tools/getting-started

Connects a Teleportal client to a server, synchronizes a Y.js document, and allows for real-time updates. It demonstrates creating a provider, accessing the Y.js document, and listening for changes.

```typescript
import { Provider } from "teleportal/providers";
import * as Y from "yjs";


// Create a provider that connects to the server
const provider = await Provider.create({
  url: "ws://localhost:3000",
  document: "my-document",
});


// Wait for the document to sync
await provider.synced;


// Access the Y.js document
const ydoc = provider.doc;


// Create a Y.js text type and insert content
const ytext = ydoc.getText("content");
ytext.insert(0, "Hello, world!");


// Listen for updates from other clients
ydoc.on("update", () => {
  console.log("Document updated:", ytext.toString());
});

```

--------------------------------

### Teleportal Client Setup with HTTP Transport (JavaScript)

Source: https://teleportal.tools/guides/http-transport

Demonstrates setting up a Teleportal client using the `Provider` API. The `Provider` automatically utilizes HTTP transport with Server-Sent Events if WebSocket connections are unavailable. It connects to a specified URL and document, then waits for synchronization.

```javascript
import { Provider } from "teleportal/providers";


// Provider will automatically use HTTP/SSE if WebSocket fails
const provider = await Provider.create({
  url: "https://example.com",
  document: "my-document",
});


await provider.synced;

```

--------------------------------

### Teleportal Server Setup with HTTP Transport (JavaScript)

Source: https://teleportal.tools/guides/http-transport

Sets up a Teleportal server using HTTP transport. It initializes the server and defines HTTP handlers using `getHttpHandlers` from the 'teleportal/http' module. The `onConnect` function extracts context from the incoming request.

```javascript
import { Server } from "teleportal/server";
import { getHttpHandlers } from "teleportal/http";


const server = new Server({
  getStorage: async (ctx) => {
    // Your storage implementation
    return documentStorage;
  },
});


// HTTP handlers
const handlers = getHttpHandlers({
  server,
  onConnect: async (request) => {
    // Extract context from request
    return {
      context: { userId: "user-123" },
    };
  },
});

```

--------------------------------

### Transport Composition Example with Teleportal

Source: https://teleportal.tools/core-concepts/transport

Demonstrates layering multiple transport middleware functions onto a base transport. This example shows how to add encryption, rate limiting, logging, and message validation sequentially.

```javascript
// Base transport
let transport = getBaseTransport();


// Add encryption
transport = getEncryptedTransport(handler);


// Add rate limiting
transport = withRateLimit(transport, options);


// Add logging
transport = withLogger(transport);


// Add message validation
transport = withMessageValidator(transport, {
  isAuthorized: async (message, type) => {
    // Authorization logic
    return true;
  },
});
```

--------------------------------

### Client Setup: JWT Token Generation and Connection with Teleportal

Source: https://teleportal.tools/guides/authentication

This snippet illustrates how to set up JWT token authentication on the client-side using Teleportal. It shows how to create a token manager (matching the server's secret), generate a JWT token with specific user and document permissions, and then use this token to establish a secure connection to a Teleportal provider.

```typescript
import { Provider } from "teleportal/providers";
import { createTokenManager } from "teleportal/token";


// Create token manager (should match server secret)
const tokenManager = createTokenManager({
  secret: "your-secret-key",
});


// Generate token
const token = await tokenManager.createToken("user-123", "org-456", [
  { pattern: "user-123/*", permissions: ["read", "write"] },
]);


// Connect with token
const provider = await Provider.create({
  url: `wss://example.com?token=${token}`,
  document: "user-123/my-document",
});


await provider.synced;

```

--------------------------------

### Implement Custom Monitoring for Teleportal Server Events

Source: https://teleportal.tools/integration

Demonstrates how to integrate custom monitoring by subscribing to Teleportal server events, such as client connections. This allows sending event data to external monitoring systems.

```javascript
// Custom monitoring
server.on("client-connect", (data) => {
  // Send to your monitoring system
});

```

--------------------------------

### Monitoring Teleportal Deployment Metrics

Source: https://teleportal.tools/advanced/scaling

Provides code examples for monitoring Teleportal deployments. It shows how to retrieve per-node metrics from a server instance and how to aggregate metrics across multiple nodes for a comprehensive overview of the system's performance.

```javascript
// Per-node metrics
const metrics = await server.getMetrics();


// Aggregate metrics across nodes
const aggregatedMetrics = await aggregateMetrics(allNodes);
```

--------------------------------

### Document Pattern Matching Examples

Source: https://teleportal.tools/core-concepts/authentication

Demonstrates various methods for matching document patterns when defining token permissions. Supports exact, prefix, wildcard, and suffix matching.

```json
{
  "exact_match": {
    "pattern": "document1"
    // Matches: "document1"
  },
  "prefix_match": {
    "pattern": "user/*"
    // Matches: "user/doc1", "user/doc2", "user/project/doc3"
  },
  "wildcard_match": {
    "pattern": "*"
    // Matches: any document name
  },
  "suffix_match": {
    "pattern": "*.md"
    // Matches: "readme.md", "document.md"
  }
}
```

--------------------------------

### Configure PostgreSQL Storage with unstorage

Source: https://teleportal.tools/guides/persistent-storage

Shows how to configure unstorage to use PostgreSQL as a persistent storage backend. This involves importing the PostgreSQL driver and initializing createStorage with the necessary connection string.

```javascript
import postgresDriver from "unstorage/drivers/postgres";


const storage = createStorage({
  driver: postgresDriver({
    connectionString: "postgresql://user:password@localhost/db",
  }),
});

```

--------------------------------

### Single-Node Teleportal Server Setup

Source: https://teleportal.tools/advanced/scaling

Sets up a basic Teleportal server for single-node deployments. It requires a storage backend to be provided via the getStorage function. This is suitable for small to medium applications with in-memory or local storage.

```javascript
const server = new Server({
  getStorage: async (ctx) => {
    // Your storage
  },
});
```

--------------------------------

### Configure Redis Storage and Teleportal Server

Source: https://teleportal.tools/guides/persistent-storage

Demonstrates setting up a Teleportal server with persistent document storage using the unstorage abstraction layer and the Redis driver. It initializes unstorage with Redis and configures the server to use this storage for documents and files.

```javascript
import { createStorage } from "unstorage";
import { createUnstorage } from "teleportal/storage";
import redisDriver from "unstorage/drivers/redis";
import { Server } from "teleportal/server";


// Create unstorage instance with Redis driver
const storage = createStorage({
  driver: redisDriver({
    base: "teleportal:",
    url: "redis://localhost:6379",
  }),
});


const server = new Server({
  getStorage: async (ctx) => {
    const { documentStorage } = createUnstorage(storage, {
      documentKeyPrefix: "doc",
      fileKeyPrefix: "file",
      encrypted: ctx.encrypted,
    });
    return documentStorage;
  },
});

```

--------------------------------

### Separating Storage Types in Teleportal

Source: https://teleportal.tools/advanced/scaling

Demonstrates how to configure different storage backends for various data types within a Teleportal application. This example shows separate configurations for documents (PostgreSQL), files (S3), and milestones (Redis), allowing for optimized storage solutions for each.

```javascript
// PostgreSQL for documents
const documentStorage = new PostgresDocumentStorage(db);


// S3 for files
const fileStorage = new S3FileStorage(s3Client);


// Redis for milestones
const milestoneStorage = new RedisMilestoneStorage(redisClient);
```

--------------------------------

### Server Setup: JWT Token Authentication with Teleportal

Source: https://teleportal.tools/guides/authentication

This snippet demonstrates setting up JWT token authentication on the server-side using Teleportal. It configures a token manager with a secret key and expiration, and integrates it into the server's permission checking logic. The `onUpgrade` function extracts and verifies the token from incoming WebSocket requests.

```typescript
import { serve } from "crossws/server";
import { Server } from "teleportal/server";
import { createTokenManager } from "teleportal/token";
import { getWebsocketHandlers } from "teleportal/websocket-server";


const tokenManager = createTokenManager({
  secret: "your-secret-key",
  expiresIn: 3600,
});


const server = new Server({
  getStorage: async (ctx) => {
    // Your storage implementation
    return documentStorage;
  },
  checkPermission: async ({ context, documentId, message, type }) => {
    const token = (context as any).token;
    if (!token) return false;


    const result = await tokenManager.verifyToken(token);
    if (!result.valid || !result.payload) return false;


    const payload = result.payload;
    const requiredPermission = type === "read" ? "read" : "write";
    return tokenManager.hasDocumentPermission(
      payload,
      documentId!,
      requiredPermission
    );
  },
});


serve({
  websocket: getWebsocketHandlers({
    server,
    onUpgrade: async (request) => {
      // Extract token from request
      const url = new URL(request.url);
      const token = url.searchParams.get("token") ||
                   request.headers.get("authorization")?.replace("Bearer ", "");


      if (!token) {
        throw new Response("No token provided", { status: 401 });
      }


      const result = await tokenManager.verifyToken(token);
      if (!result.valid || !result.payload) {
        throw new Response("Invalid token", { status: 401 });
      }


      return {
        context: {
          userId: result.payload.userId,
          room: result.payload.room,
          token,
        },
      };
    },
  }),
  fetch: () => new Response("Not found", { status: 404 }),
});

```

--------------------------------

### Setup Teleportal Server with Observability Endpoints (TypeScript)

Source: https://teleportal.tools/guides/observability

Demonstrates how to set up a Teleportal server and expose observability endpoints for metrics, health checks, and status. Requires the 'teleportal/server' and 'teleportal/monitoring' modules.

```typescript
import { Server } from "teleportal/server";
import { getMetricsHandler, getHealthHandler, getStatusHandler } from "teleportal/monitoring";


const server = new Server({
  getStorage: async (ctx) => {
    // Your storage implementation
    return documentStorage;
  },
});


// Expose observability endpoints
app.get("/metrics", getMetricsHandler(server));
app.get("/health", getHealthHandler(server));
app.get("/status", getStatusHandler(server));

```

--------------------------------

### Configure Server Rate Limiting with Unstorage

Source: https://teleportal.tools/guides/rate-limiting

Demonstrates how to configure rate limiting rules on the Teleportal server using Unstorage for persistent storage. It shows how to define rules for tracking limits by user, document, or user-document pair, and how to handle exceeded rate limits and message sizes.

```typescript
import {
  Server
} from "teleportal/server";
import {
  createStorage
} from "unstorage";
import {
  UnstorageDocumentStorage,
  UnstorageRateLimitStorage
} from "teleportal/storage";


const storage = createStorage();


const server = new Server({
  storage: new UnstorageDocumentStorage(storage),
  rateLimitConfig: {
    // Multiple rate limit rules
    rules: [
      // Track by user (across all documents)
      {
        id: "per-user",
        maxMessages: 100, // 100 messages per window
        windowMs: 1000, // 1 second window
        trackBy: "user",
      },
      // Track by document (across all users)
      {
        id: "per-document",
        maxMessages: 500, // 500 messages per window per document
        windowMs: 10000, // 10 second window
        trackBy: "document",
      },
      // Track by user-document pair
      {
        id: "user-document",
        maxMessages: 100,
        windowMs: 1000,
        trackBy: "user-document",
      },
    ],
    // Use persistent storage for multi-node deployments
    rateLimitStorage: new UnstorageRateLimitStorage(storage),
    // Callback when rate limit is exceeded
    onRateLimitExceeded: (details) => {
      console.warn("Rate limit exceeded", details);
    },
    // Maximum message size
    maxMessageSize: 10 * 1024 * 1024, // 10MB
    // Callback when message size is exceeded
    onMessageSizeExceeded: (details) => {
      console.warn("Message size exceeded", details);
    },
  },
});

```

--------------------------------

### Configure Unstorage for Production Teleportal

Source: https://teleportal.tools/integration

Sets up Unstorage with Redis as the backend for Teleportal's document and file storage. This configuration is recommended for production environments.

```javascript
// Unstorage (production)
import { createStorage } from "unstorage";
import { createUnstorage } from "teleportal/storage";
import redisDriver from "unstorage/drivers/redis";


const storage = createStorage({
  driver: redisDriver({ base: "teleportal:" }),
});


const server = new Server({
  getStorage: async (ctx) => {
    const { documentStorage } = createUnstorage(storage, {
      documentKeyPrefix: "doc",
      fileKeyPrefix: "file",
    });
    return documentStorage;
  },
});

```

--------------------------------

### Configure Multi-Node Teleportal with Redis Pub/Sub

Source: https://teleportal.tools/integration

Sets up a multi-node Teleportal deployment using Redis for Pub/Sub message coordination. This ensures proper message handling across multiple server instances.

```javascript
// Multi-node with PubSub
import { RedisPubSub } from "teleportal/pubsub/redis";


const server = new Server({
  getStorage: async (ctx) => {
    // Shared storage
  },
  pubSub: new RedisPubSub({
    url: "redis://localhost:6379",
  }),
  nodeId: process.env.NODE_ID,
});

```

--------------------------------

### Teleportal Server Setup with HTTP Load Balancer

Source: https://teleportal.tools/advanced/scaling

Sets up a Teleportal server instance intended to be used behind an HTTP load balancer. This configuration omits Pub/Sub and relies on shared storage and sticky sessions for scaling. It's a simpler approach for scaling without direct inter-node communication.

```javascript
// Each server instance
const server = new Server({
  getStorage: async (ctx) => {
    // Shared storage
    return documentStorage;
  },
  // No pubSub - relies on sticky sessions
});
```

--------------------------------

### Send Webhooks on Document Load with Node.js

Source: https://teleportal.tools/core-concepts/server

This code example shows how to handle the 'document-load' event. When a document is loaded, it triggers an asynchronous function that sends a webhook notification. The webhook includes event details like the document ID and the user ID from the context, enabling external systems to react to document openings.

```javascript
server.on("document-load", async (data) => {
  await sendWebhook({
    event: "document.opened",
    documentId: data.documentId,
    userId: data.context.userId,
  });
});
```

--------------------------------

### Teleportal Server Setup with Redis Pub/Sub

Source: https://teleportal.tools/guides/pub-sub

Sets up a Teleportal server instance utilizing Redis for Pub/Sub communication and a shared storage backend. It configures the server with a unique nodeId and a RedisPubSub instance pointing to the Redis server.

```typescript
import { Server } from "teleportal/server";
import { RedisPubSub } from "teleportal/pubsub/redis";
import { createUnstorage } from "teleportal/storage";


const server = new Server({
  getStorage: async (ctx) => {
    // Shared storage backend
    return documentStorage;
  },
  pubSub: new RedisPubSub({
    url: "redis://localhost:6379",
  }),
  nodeId: process.env.NODE_ID || `node-${uuidv4()}`,
});
```

--------------------------------

### Configure S3 Storage with unstorage

Source: https://teleportal.tools/guides/persistent-storage

Illustrates how to configure unstorage to use Amazon S3 as a persistent storage backend. This involves importing the S3 driver and providing the bucket name and region to createStorage.

```javascript
import s3Driver from "unstorage/drivers/s3";


const storage = createStorage({
  driver: s3Driver({
    bucket: "my-bucket",
    region: "us-east-1",
  }),
});

```

--------------------------------

### Connection State

Source: https://teleportal.tools/core-concepts/provider

This section details how to monitor the connection state of the Teleportal provider. It provides examples of checking the current connection type and handling connection errors, as well as waiting for the provider to be fully synced.

```APIDOC
## Connection State

### Description
Monitors and reacts to the connection state of the provider.

### Method
Provider.state

### Endpoint
N/A (Client-side access)

### Parameters
None

### Request Example
```javascript
// Get current connection state
const connection = provider.state;

if (connection.type === "connected") {
  console.log("Connected!");
} else if (connection.type === "errored") {
  console.error("Connection error:", connection.error);
}

// Wait for connection
try {
  await provider.synced;
  console.log("Fully synced!");
} catch (error) {
  console.error("Sync failed:", error);
}
```

### Response
#### Success Response (200)
Connection state object.

#### Response Example
```json
{
  "type": "connected" | "disconnected" | "errored",
  "error": Error | null
}
```
```

--------------------------------

### Configure Automatic Backups with Server Triggers

Source: https://teleportal.tools/core-concepts/milestones

Configures automatic backups for a server using milestone triggers. This example sets up a default time-based trigger to create a milestone every hour. It requires the `Server` class and a configuration object for `milestoneTriggerConfig`.

```javascript
const server = new Server({
  milestoneTriggerConfig: {
    defaultTriggers: [
      {
        type: "time-based",
        interval: 3600000, // Every hour
      },
    ],
  },
});
```

--------------------------------

### Server Setup with Encrypted Storage - Teleportal

Source: https://teleportal.tools/guides/encryption-at-rest

Sets up a Teleportal server with encrypted storage using unstorage and a Redis driver. It configures the storage to enable encryption based on the context provided to the server. Dependencies include 'teleportal/server', 'teleportal/storage', 'unstorage', and 'unstorage/drivers/redis'.

```typescript
import { Server } from "teleportal/server";
import { createUnstorage } from "teleportal/storage";
import { createStorage } from "unstorage";
import redisDriver from "unstorage/drivers/redis";


const storage = createStorage({
  driver: redisDriver({
    base: "teleportal:",
    url: "redis://localhost:6379",
  }),
});


const server = new Server({
  getStorage: async (ctx) => {
    const { documentStorage } = createUnstorage(storage, {
      documentKeyPrefix: "doc",
      encrypted: ctx.encrypted, // Enable encryption based on context
    });
    return documentStorage;
  },
});
```

--------------------------------

### Configure Multi-Node Rate Limiting with Redis

Source: https://teleportal.tools/guides/rate-limiting

Shows how to configure persistent rate limit storage for multi-node Teleportal deployments using Redis. This ensures rate limits are shared across multiple server instances.

```typescript
import {
  RedisRateLimitStorage
} from "teleportal/transports/redis";


const rateLimitStorage = new RedisRateLimitStorage(redisClient);


const server = new Server({
  // ... other options
  rateLimitConfig: {
    rateLimitStorage, // Shared across server instances
    // ... other options
  },
});

```

--------------------------------

### Connect Teleportal Client via WebSocket

Source: https://teleportal.tools/guides/websocket-only

Establishes a WebSocket connection to a Teleportal server using the Provider API. It connects to a specified document, waits for synchronization, inserts initial text, and logs the document content. It also sets up an update listener to log any changes to the document's text.

```typescript
import { Provider } from "teleportal/providers";


const provider = await Provider.create({
  url: `ws://localhost:3000`,
  document: "test",
});


await provider.synced;


provider.doc.getText("test").insert(0, "Hello, world!");


console.log(provider.doc.getText("test").toString());


provider.doc.on("update", () => {
  console.log(provider.doc.getText("test").toString());
});

```

--------------------------------

### Create Provider with Automatic Connection (JavaScript)

Source: https://teleportal.tools/core-concepts/provider

Demonstrates the basic usage of creating a Provider instance with automatic connection establishment. It shows how to access the Yjs document, make changes, and listen to connection state updates. This method automatically handles connection fallback.

```javascript
import { Provider } from "teleportal/providers";


// Create a provider with automatic connection
const provider = await Provider.create({
  url: "wss://example.com",
  document: "my-document-id",
});


// Wait for document to be synced
await provider.synced;


// Access the Yjs document
const ymap = provider.doc.getMap("data");
ymap.set("key", "value");


// Listen to connection state
provider.on("update", (state) => {
  console.log("Connection state:", state.type);
});
```

--------------------------------

### Listen to Client Connections with Node.js

Source: https://teleportal.tools/core-concepts/server

This snippet demonstrates how to use the `server.on` method to listen for the 'client-connect' event. It asynchronously creates a new record in a 'clients' table in a database, storing the client's ID and connection timestamp. This is useful for tracking user activity and managing client sessions.

```javascript
server.on("client-connect", async (data) => {
  await db.clients.create({
    clientId: data.clientId,
    connectedAt: new Date(),
  });
});
```

--------------------------------

### GET /health

Source: https://teleportal.tools/guides/observability

Checks the overall health status of the Teleportal server.

```APIDOC
## GET /health

### Description
This endpoint provides a quick health check of the Teleportal server, indicating if it is operational.

### Method
GET

### Endpoint
/health

### Parameters
None

### Request Example
```bash
curl http://localhost:3000/health
```

### Response
#### Success Response (200)
- **status** (string) - The health status of the server (e.g., "healthy").
- **timestamp** (string) - The timestamp when the health check was performed.
- **checks** (object) - An object containing results of internal health checks (details omitted).
- **uptime** (number) - The server's uptime in seconds.

#### Response Example
```json
{
  "status": "healthy",
  "timestamp": "2024-01-01T00:00:00.000Z",
  "checks": { ... },
  "uptime": 3600
}
```
```

--------------------------------

### GET /status

Source: https://teleportal.tools/guides/observability

Retrieves detailed operational status information for the Teleportal server.

```APIDOC
## GET /status

### Description
This endpoint returns detailed operational status information for the Teleportal server, including client and session counts, message statistics, and uptime.

### Method
GET

### Endpoint
/status

### Parameters
None

### Request Example
```bash
curl http://localhost:3000/status
```

### Response
#### Success Response (200)
- **nodeId** (string) - The unique identifier for the server node.
- **activeClients** (number) - The current number of active clients connected to the server.
- **activeSessions** (number) - The current number of active sessions.
- **totalMessagesProcessed** (number) - The total number of messages processed by the server.
- **totalDocumentsOpened** (number) - The total number of documents opened.
- **messageTypeBreakdown** (object) - An object detailing the breakdown of processed message types.
  - **doc** (number) - Number of document-related messages.
  - **awareness** (number) - Number of awareness-related messages.
  - **file** (number) - Number of file-related messages.
- **uptime** (number) - The server's uptime in seconds.

#### Response Example
```json
{
  "nodeId": "node-123",
  "activeClients": 10,
  "activeSessions": 5,
  "totalMessagesProcessed": 1000,
  "totalDocumentsOpened": 50,
  "messageTypeBreakdown": {
    "doc": 500,
    "awareness": 300,
    "file": 200
  },
  "uptime": 3600
}
```
```

--------------------------------

### GET /metrics

Source: https://teleportal.tools/guides/observability

Exposes Prometheus-compatible metrics for monitoring server performance and activity.

```APIDOC
## GET /metrics

### Description
This endpoint provides Prometheus-formatted metrics about the Teleportal server's operational status, including active sessions, clients, and processed messages.

### Method
GET

### Endpoint
/metrics

### Parameters
None

### Request Example
```bash
curl http://localhost:3000/metrics
```

### Response
#### Success Response (200)
- **teleportal_sessions_active** (gauge) - Current number of active sessions
- **teleportal_clients_active** (gauge) - Current number of active clients
- **teleportal_documents_opened_total** (counter) - Total documents opened
- **teleportal_messages_processed_total** (counter) - Total messages processed
- **teleportal_message_duration_seconds** (histogram) - Message processing duration

#### Response Example
```
# HELP teleportal_sessions_active Current number of active sessions
# TYPE teleportal_sessions_active gauge
teleportal_sessions_active 5
# HELP teleportal_clients_active Current number of active clients
# TYPE teleportal_clients_active gauge
teleportal_clients_active 10
# HELP teleportal_documents_opened_total Total documents opened
# TYPE teleportal_documents_opened_total counter
teleportal_documents_opened_total 50
# HELP teleportal_messages_processed_total Total messages processed
# TYPE teleportal_messages_processed_total counter
teleportal_messages_processed_total 1000
# HELP teleportal_message_duration_seconds Message processing duration
# TYPE teleportal_message_duration_seconds histogram
teleportal_message_duration_seconds_bucket{le="0.005"} 0
teleportal_message_duration_seconds_bucket{le="0.01"} 0
# ... other buckets ...
teleportal_message_duration_seconds_count 1000
teleportal_message_duration_seconds_sum 10.5
```
```

--------------------------------

### Implement WebSocket Transport for Teleportal

Source: https://teleportal.tools/integration

Configures Teleportal to use WebSocket for bidirectional communication. This is the default and recommended transport for low-latency interactions.

```javascript
// WebSocket
import { getWebsocketHandlers } from "teleportal/websocket-server";


const handlers = getWebsocketHandlers({
  server,
  onUpgrade: async (request) => {
    return { context: { userId: "user-123" } };
  },
});

```

--------------------------------

### Create Milestones on Save/Publish - JavaScript

Source: https://teleportal.tools/core-concepts/milestones

Example use cases for creating milestones at significant document events like saving or publishing.

```javascript
// Create milestone when user clicks "Save"
await provider.createMilestone("Save point 1");


// Create milestone when document is published
await provider.createMilestone("Published v1.0");
```

--------------------------------

### Enable Milestone Synchronization in Teleportal

Source: https://teleportal.tools/integration

Configures Teleportal to include milestone synchronization functionality. This requires providing a milestone storage instance to the RPC handlers.

```javascript
// Milestone sync (optional)
import { getMilestoneRpcHandlers } from "teleportal/protocols/milestone";


const server = new Server({
  rpcHandlers: {
    ...getMilestoneRpcHandlers(milestoneStorage),
  },
});

```

--------------------------------

### Enable File Synchronization in Teleportal

Source: https://teleportal.tools/integration

Configures Teleportal to include file synchronization functionality. This requires providing a file storage instance to the RPC handlers.

```javascript
// File sync (optional)
import { getFileRpcHandlers } from "teleportal/protocols/file";


const server = new Server({
  rpcHandlers: {
    ...getFileRpcHandlers(fileStorage),
  },
});

```

--------------------------------

### Implement HTTP/SSE Transport for Teleportal

Source: https://teleportal.tools/integration

Configures Teleportal to use HTTP with Server-Sent Events (SSE) for communication. This is a fallback option for environments where WebSockets are blocked.

```javascript
// HTTP/SSE
import { getHttpHandlers } from "teleportal/http";


const handlers = getHttpHandlers({
  server,
  onConnect: async (request) => {
    return { context: { userId: "user-123" } };
  },
});

```

--------------------------------

### Expose Teleportal Metrics and Health Checks

Source: https://teleportal.tools/integration

Configures HTTP endpoints for Prometheus metrics and health checks for a Teleportal server. This allows for monitoring the server's status and performance.

```javascript
// Metrics & health
import { getMetricsHandler, getHealthHandler } from "teleportal/monitoring";


app.get("/metrics", getMetricsHandler(server));
app.get("/health", getHealthHandler(server));

```

--------------------------------

### Configure Built-in JWT Authentication for Teleportal

Source: https://teleportal.tools/integration

Sets up Teleportal's built-in JSON Web Token (JWT) manager for authentication. This includes creating tokens with specific permissions.

```javascript
// JWT (built-in)
import { createTokenManager } from "teleportal/token";


const tokenManager = createTokenManager({
  secret: "your-secret-key",
  expiresIn: 3600,
});


const token = await tokenManager.createToken("user-123", "org-456", [
  { pattern: "user-123/*", permissions: ["read", "write"] },
]);

```

--------------------------------

### Enable Offline Persistence with IndexedDB

Source: https://teleportal.tools/core-concepts/provider

Demonstrates how to enable and configure offline persistence using IndexedDB. The provider defaults to enabling this feature and allows for a custom IndexedDB prefix. It shows how to wait for local data to load and synchronization with the server.

```javascript
const provider = await Provider.create({
  url: "wss://example.com",
  document: "my-document-id",
  enableOfflinePersistence: true, // default
  indexedDBPrefix: "my-app-", // custom prefix
});


// Document will be loaded from IndexedDB if available
await provider.loaded; // Resolves when local data is loaded
await provider.synced; // Resolves when synced with server
```

--------------------------------

### Configure Unstorage for Indexed Keys or Key Scanning

Source: https://teleportal.tools/advanced/performance

Sets up an unstorage-based document storage, allowing configuration between using indexed keys (recommended for Redis, Memcached) or key scanning (recommended for PostgreSQL, MySQL) for better performance.

```javascript
const { documentStorage } = createUnstorage(storage, {
  scanKeys: false, // Use indexed keys (better for Redis, Memcached)
  // or
  scanKeys: true, // Use key scanning (better for PostgreSQL, MySQL)
});
```

--------------------------------

### Manage Awareness State (JavaScript)

Source: https://teleportal.tools/core-concepts/provider

Shows how to utilize the Provider's Awareness instance for managing user presence and cursor information. It covers setting local user state and listening for updates when other users' awareness information changes. This is crucial for collaborative features.

```javascript
// Access awareness
const awareness = provider.awareness;


// Set local state
awareness.setLocalStateField("user", {
  name: "John Doe",
  color: "#ff0000",
});


// Listen to awareness updates
awareness.on("update", ({ added, updated, removed }) => {
  console.log("Users changed:", { added, updated, removed });
});
```

--------------------------------

### Configure In-Memory Storage for Development Teleportal

Source: https://teleportal.tools/integration

Sets up in-memory storage for Teleportal, suitable for development and testing purposes. This provides a simple and fast storage solution without external dependencies.

```javascript
// In-memory (development)
import { createInMemory } from "teleportal/storage";


const server = new Server({
  getStorage: async (ctx) => {
    const { documentStorage } = createInMemory();
    return documentStorage;
  },
});

```

--------------------------------

### Set Up Teleportal Server with Token Authentication (TypeScript)

Source: https://teleportal.tools/index

This snippet demonstrates how to set up a Teleportal server using TypeScript. It configures a token manager for JWT authentication and integrates it with both WebSocket and HTTP handlers. The server uses an in-memory storage and enforces permission checks based on the provided token.

```typescript
import { serve } from "crossws/server";
import { createTokenManager } from "teleportal/token";
import { tokenAuthenticatedWebsocketHandler } from "teleportal/websocket-server";
import { tokenAuthenticatedHTTPHandler } from "teleportal/http";
import { checkPermissionWithTokenManager, Server } from "teleportal/server";
import { YDocStorage } from "teleportal/storage";


// token manager is a JWT token verifier and manager.
const tokenManager = createTokenManager({
  secret: "your-secret-key-here",
  expiresIn: 3600, // 1 hour
  issuer: "teleportal.tools",
});


// Create a Teleportal server instance
const server = new Server({
  // you can use any storage backend you want, this one is in-memory
  storage: new YDocStorage(),
  // every message is verified against the token's permissions to the document
  checkPermission: checkPermissionWithTokenManager(tokenManager),
});


// Serve the Teleportal server with crossws (for multi-runtime support)
serve({
  // websocket upgrades are denied if the token is invalid
  websocket: tokenAuthenticatedWebsocketHandler({ server, tokenManager }),
  // HTTP requests are denied if the token is invalid
  fetch: tokenAuthenticatedHTTPHandler({ server, tokenManager }),
});

```

--------------------------------

### Provider with WebSocket Connection (JavaScript)

Source: https://teleportal.tools/core-concepts/provider

Illustrates how to explicitly create a Provider using a WebSocketConnection. This is the default and most common connection type for real-time synchronization. It requires importing the WebSocketConnection class.

```javascript
import { WebSocketConnection } from "teleportal/providers/websocket";


const connection = new WebSocketConnection({
  url: "wss://example.com",
});


const provider = new Provider({
  client: connection,
  document: "my-document",
});
```

--------------------------------

### Create Custom Transport Sink

Source: https://teleportal.tools/advanced/custom-transport

This example shows how to create a custom `Sink` for a Teleportal transport. It uses `WritableStream` to write outgoing messages to a custom transport mechanism after encoding them and handles transport closure.

```typescript
import { compose } from "teleportal/transports";
import type { Transport, Source, Sink } from "teleportal/transports";


// Create a sink that writes to your transport
function getMyTransportSink(): Sink<Context> {
  return {
    writable: new WritableStream({
      async write(message) {
        // Encode message
        const encoded = encodeMessage(message);
        // Send via your transport
        await myTransport.send(encoded);
      },
      async close() {
        await myTransport.close();
      },
    }),
  };
}
```

--------------------------------

### Running Multiple Teleportal Server Instances

Source: https://teleportal.tools/advanced/scaling

Demonstrates how to run multiple Teleportal server instances concurrently. Each instance is assigned a unique NODE_ID and PORT, allowing them to operate as separate nodes in a distributed system. This is typically used in conjunction with a Pub/Sub mechanism for coordination.

```bash
# Instance 1
NODE_ID=node-1 PORT=3000 node server.js


# Instance 2
NODE_ID=node-2 PORT=3001 node server.js


# Instance 3
NODE_ID=node-3 PORT=3002 node server.js
```

--------------------------------

### Switch Documents Efficiently (JavaScript)

Source: https://teleportal.tools/core-concepts/provider

Explains the `switchDocument` method, which allows changing the active Yjs document on an existing connection without re-establishing network communication. This improves efficiency when dealing with multiple documents. The old provider is destroyed, and the new one is returned.

```javascript
// Switch to a new document (reuses connection)
const newProvider = provider.switchDocument({
  document: "new-document-id",
});


// Old provider is destroyed, new provider is ready
await newProvider.synced;
```