Bundles

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Bundles are the core update packages in Capgo. Each bundle contains the web assets (HTML, CSS, JS) that make up your app’s content. The Bundles API allows you to manage these update packages, including listing and deleting them.

Understanding Bundles

A bundle represents a specific version of your app’s web content and includes:

Version: Semantic version number of the bundle
Checksum: Unique hash to verify bundle integrity
Storage Info: Details about where and how the bundle is stored
Native Requirements: Minimum native app version requirements
Metadata: Creation time, ownership, and other tracking information

Manual Bundle Creation (Without CLI)

Here’s how to create and upload bundles manually without using the Capgo CLI:

Step 1: Build Your App

First, build your app’s web assets:

npm run build

Step 2: Create Bundle Zip Using Same Packages as Capgo CLI

Important: Use the exact same JavaScript packages that Capgo CLI uses internally to ensure compatibility.

Install Required Packages

npm install adm-zip @tomasklaen/checksum

Create Zip Bundle with JavaScript (Same as Capgo CLI)

const fs = require('node:fs');
const path = require('node:path');
const os = require('node:os');
const AdmZip = require('adm-zip');
const { checksum: getChecksum } = require('@tomasklaen/checksum');

// Exact same implementation as Capgo CLI
function zipFileUnix(filePath) {
  const zip = new AdmZip();
  zip.addLocalFolder(filePath);
  return zip.toBuffer();
}

async function zipFileWindows(filePath) {
  console.log('Zipping file windows mode');
  const zip = new AdmZip();

  const addToZip = (folderPath, zipPath) => {
    const items = fs.readdirSync(folderPath);

    for (const item of items) {
      const itemPath = path.join(folderPath, item);
      const stats = fs.statSync(itemPath);

      if (stats.isFile()) {
        const fileContent = fs.readFileSync(itemPath);
        zip.addFile(path.join(zipPath, item).split(path.sep).join('/'), fileContent);
      } else if (stats.isDirectory()) {
        addToZip(itemPath, path.join(zipPath, item));
      }
    }
  };

  addToZip(filePath, '');
  return zip.toBuffer();
}

// Main zipFile function (exact same logic as CLI)
async function zipFile(filePath) {
  if (os.platform() === 'win32') {
    return zipFileWindows(filePath);
  } else {
    return zipFileUnix(filePath);
  }
}

async function createBundle(inputPath, outputPath, version) {
  // Create zip using exact same method as Capgo CLI
  const zipped = await zipFile(inputPath);

  // Write to file
  fs.writeFileSync(outputPath, zipped);

  // Calculate checksum using exact same package as CLI
  const checksum = await getChecksum(zipped, 'sha256');

  return {
    filename: path.basename(outputPath),
    version: version,
    size: zipped.length,
    checksum: checksum
  };
}

// Usage
async function main() {
  try {
    const result = await createBundle('./dist', './my-app-1.2.3.zip', '1.2.3');
    console.log('Bundle info:', JSON.stringify(result, null, 2));
  } catch (error) {
    console.error('Error creating bundle:', error);
  }
}

main();

Step 3: Calculate SHA256 Checksum Using Same Package as CLI

const fs = require('node:fs');
const { checksum: getChecksum } = require('@tomasklaen/checksum');

async function calculateChecksum(filePath) {
  const fileBuffer = fs.readFileSync(filePath);
  // Use exact same package and method as Capgo CLI
  const checksum = await getChecksum(fileBuffer, 'sha256');
  return checksum;
}

// Usage
async function main() {
  const checksum = await calculateChecksum('./my-app-1.2.3.zip');
  console.log('Checksum:', checksum);
}

main();

Step 4: Upload Bundle to Your Storage

Upload your zip file to any web-accessible storage:

# Example: Upload to your server via scp
scp my-app-1.2.3.zip user@your-server.com:/var/www/bundles/

# Example: Upload to S3 using AWS CLI
aws s3 cp my-app-1.2.3.zip s3://your-bucket/bundles/

# Example: Upload via curl to a custom endpoint
curl -X POST https://your-storage-api.com/upload \
  -H "Authorization: Bearer YOUR_TOKEN" \
  -F "file=@my-app-1.2.3.zip"

Important: Your bundle must be publicly accessible via HTTPS URL (no authentication required). Capgo’s servers need to download the bundle from this URL.

Examples of valid public URLs:

https://your-storage.com/bundles/my-app-1.2.3.zip
https://github.com/username/repo/releases/download/v1.2.3/bundle.zip
https://cdn.jsdelivr.net/gh/username/repo@v1.2.3/dist.zip

Step 5: Register Bundle with Capgo API

async function registerWithCapgo(appId, version, bundleUrl, checksum, apiKey) {
  const fetch = require('node-fetch');

  // Create bundle version
  const response = await fetch('https://api.capgo.app/bundle/', {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json',
      'authorization': apiKey
    },
    body: JSON.stringify({
      app_id: appId,
      version: version,
      external_url: bundleUrl,
      checksum: checksum
    })
  });

  if (!response.ok) {
    throw new Error(`Failed to create bundle: ${response.statusText}`);
  }

  const data = await response.json();
  console.log('Bundle created:', data);

  return data;
}

API Parameters

Parameter	Description	Required
`app_id`	Your app identifier	Yes
`version`	Semantic version (e.g., “1.2.3”)	Yes
`external_url`	Publicly accessible HTTPS URL where bundle can be downloaded (no auth required)	Yes
`checksum`	SHA256 checksum of the zip file	Yes

Bundle Structure Requirements

Your bundle zip must follow these requirements:

Root Index File: Must have index.html at the root level
Capacitor Integration: Must call notifyAppReady() in your app code
Asset Paths: Use relative paths for all assets

Valid Bundle Structure

bundle.zip
├── index.html
├── assets/
│   ├── app.js
│   └── styles.css
└── images/

Complete Manual Workflow Example

Simple Node.js script to zip, checksum, and upload to Capgo:

const fs = require('node:fs');
const os = require('node:os');
const AdmZip = require('adm-zip');
const { checksum: getChecksum } = require('@tomasklaen/checksum');
const fetch = require('node-fetch');

async function deployToCapgo() {
  const APP_ID = 'com.example.app';
  const VERSION = '1.2.3';
  const BUNDLE_URL = 'https://your-storage.com/bundles/app-1.2.3.zip';
  const API_KEY = process.env.CAPGO_API_KEY;

  // 1. Create zip (same as Capgo CLI)
  const zip = new AdmZip();
  zip.addLocalFolder('./dist');
  const zipped = zip.toBuffer();

  // 2. Calculate checksum (same as Capgo CLI)
  const checksum = await getChecksum(zipped, 'sha256');
  console.log('Checksum:', checksum);

  // 3. Upload to your storage (replace with your upload logic)
  // fs.writeFileSync('./bundle.zip', zipped);
  // ... upload bundle.zip to your storage ...

  // 4. Register with Capgo API
  const response = await fetch('https://api.capgo.app/bundle/', {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json',
      'authorization': API_KEY
    },
    body: JSON.stringify({
      app_id: APP_ID,
      version: VERSION,
      external_url: BUNDLE_URL,
      checksum: checksum
    })
  });

  if (!response.ok) {
    throw new Error(`Failed: ${response.statusText}`);
  }

  console.log('Bundle registered with Capgo!');
}

deployToCapgo().catch(console.error);

Install dependencies:

npm install adm-zip @tomasklaen/checksum node-fetch

Checksum Verification

JavaScript Checksum Calculation (Same as Capgo CLI)

Use the exact same package and method that Capgo CLI uses internally:

const fs = require('node:fs');
const { checksum: getChecksum } = require('@tomasklaen/checksum');

async function calculateChecksum(filePath) {
  const fileBuffer = fs.readFileSync(filePath);
  // Use exact same package and method as Capgo CLI
  const checksum = await getChecksum(fileBuffer, 'sha256');
  return checksum;
}

// Verify checksum matches
async function verifyChecksum(filePath, expectedChecksum) {
  const actualChecksum = await calculateChecksum(filePath);
  const isValid = actualChecksum === expectedChecksum;

  console.log(`File: ${filePath}`);
  console.log(`Expected: ${expectedChecksum}`);
  console.log(`Actual:   ${actualChecksum}`);
  console.log(`Valid:    ${isValid}`);

  return isValid;
}

// Usage
async function main() {
  const bundleChecksum = await calculateChecksum('./my-app-1.2.3.zip');
  console.log('SHA256 Checksum:', bundleChecksum);
}

main();

Checksum Importance

Bundle Integrity: Ensures the bundle hasn’t been corrupted during transfer
API Verification: Capgo verifies checksums before accepting bundles
Plugin Verification: The mobile plugin verifies checksums before applying updates

Best Practices

Version Management: Use semantic versioning consistently
Storage Optimization: Remove unused bundles periodically
Version Compatibility: Set appropriate minimum native version requirements
Backup Strategy: Maintain backups of critical bundle versions

Endpoints

GET

https://api.capgo.app/bundle/

Retrieve bundle information. Returns 50 bundles per page.

Query Parameters

app_id: Required. The ID of your app
page: Optional. Page number for pagination

Response Type

interface Bundle {
  app_id: string
  bucket_id: string | null
  checksum: string | null
  created_at: string | null
  deleted: boolean
  external_url: string | null
  id: number
  minUpdateVersion: string | null
  name: string
  native_packages: Json[] | null
  owner_org: string
  r2_path: string | null
  session_key: string | null
  storage_provider: string
  updated_at: string | null
  user_id: string | null
}

Example Request

# Get all bundles
curl -H "authorization: your-api-key" \
  "https://api.capgo.app/bundle/?app_id=app_123"

# Get next page
curl -H "authorization: your-api-key" \
  "https://api.capgo.app/bundle/?app_id=app_123&page=1"

Example Response

{
  "data": [
    {
      "id": 1,
      "app_id": "app_123",
      "name": "1.0.0",
      "checksum": "abc123...",
      "minUpdateVersion": "1.0.0",
      "storage_provider": "r2",
      "created_at": "2024-01-01T00:00:00Z",
      "updated_at": "2024-01-01T00:00:00Z",
      "deleted": false,
      "owner_org": "org_123",
      "user_id": "user_123"
    }
  ]
}

DELETE

https://api.capgo.app/bundle/

Delete one or all bundles for an app. Use with caution as this action cannot be undone.

Query Parameters

For deleting a specific bundle:

interface BundleDelete {
  app_id: string
  version: string
}

For deleting all bundles:

interface BundleDeleteAll {
  app_id: string
}

Example Requests

# Delete specific bundle
curl -X DELETE \
  -H "authorization: your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "app_id": "app_123",
    "version": "1.0.0"
  }' \
  https://api.capgo.app/bundle/

# Delete all bundles
curl -X DELETE \
  -H "authorization: your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "app_id": "app_123"
  }' \
  https://api.capgo.app/bundle/

Success Response

{
  "status": "ok"
}

POST

https://api.capgo.app/bundle/

Create a new bundle with external URL.

Request Body

interface CreateBundleBody {
  app_id: string
  version: string
  external_url: string // Must be publicly accessible HTTPS URL
  checksum: string
}

Example Request

curl -X POST \
  -H "authorization: your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "app_id": "com.example.app",
    "version": "1.2.3",
    "external_url": "https://your-storage.com/bundles/app-1.2.3.zip",
    "checksum": "a1b2c3d4e5f6789abcdef123456789abcdef123456789abcdef123456789abcd"
  }' \
  https://api.capgo.app/bundle/

Success Response

{
  "status": "ok"
}

POST (Metadata)

https://api.capgo.app/bundle/metadata

Update bundle metadata such as link and comment information.

Request Body

interface UpdateMetadataBody {
  app_id: string
  version_id: number
  link?: string
  comment?: string
}

Example Request

curl -X POST \
  -H "authorization: your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "app_id": "app_123",
    "version_id": 456,
    "link": "https://github.com/myorg/myapp/releases/tag/v1.0.0",
    "comment": "Fixed critical bug in authentication"
  }' \
  https://api.capgo.app/bundle/metadata

Success Response

{
  "status": "success"
}

PUT

https://api.capgo.app/bundle/

Set a bundle to a specific channel. This links a bundle version to a channel for distribution.

Request Body

interface SetChannelBody {
  app_id: string
  version_id: number
  channel_id: number
}

Example Request

curl -X PUT \
  -H "authorization: your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "app_id": "app_123",
    "version_id": 456,
    "channel_id": 789
  }' \
  https://api.capgo.app/bundle/

Success Response

{
  "status": "success",
  "message": "Bundle 1.0.0 set to channel production"
}

Error Handling

Common error scenarios and their responses:

// Bundle not found
{
  "error": "Bundle not found",
  "status": "KO"
}

// Invalid version format
{
  "error": "Invalid version format",
  "status": "KO"
}

// Storage error
{
  "error": "Failed to delete bundle from storage",
  "status": "KO"
}

// Permission denied
{
  "error": "Insufficient permissions to manage bundles",
  "status": "KO"
}

Common Use Cases

Cleanup Old Versions

// Delete outdated beta versions
{
  "app_id": "app_123",
  "version": "1.0.0-beta.1"
}

App Reset

// Remove all bundles to start fresh
{
  "app_id": "app_123"
}

Storage Considerations

Retention Policy: Define how long to keep old bundles
Size Management: Monitor bundle sizes and storage usage
Backup Strategy: Consider backing up critical versions
Cost Optimization: Remove unnecessary bundles to optimize storage costs