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damus api

ci

The Damus API backend for Damus Purple and other functionality.

.env file variable configuration

Essential

  • DB_PATH: Path to the folder where to save mdb files.
  • TESTFLIGHT_URL: URL for the TestFlight app (optional)

Translations

  • TRANSLATION_PROVIDER: The translation provider to use, can be: mock, deepl, noswhere
  • DEEPL_KEY: The DeepL key to use for DeepL translations if enabled.
  • NOSWHERE_KEY: The Noswhere key to use for Noswhere translations if enabled.

Apple In-App Purchase (IAP)

  • ENABLE_IAP_PAYMENTS: Set to "true" to enable Apple In-App Purchase payment endpoints.
  • MOCK_VERIFY_RECEIPT: Set to "true" to mock the receipt verification process (for testing only)
  • IAP_ISSUER_ID: Apple issuer ID for the IAP key (can be found in the Apple Developer console)
  • IAP_KEY_ID: Apple key ID for the IAP key generated (can be found in the Apple Developer console, beside the key which was generated)
  • IAP_BUNDLE_ID: The bundle ID of the app (Can be found in Xcode project settings) (e.g. com.organization.app-name)
  • IAP_PRIVATE_KEY_PATH: Path to the private key file for the IAP key (e.g. ./SubscriptionKey_ABCDEF12345.p8. Can be generated in the Apple Developer console)
  • IAP_ENVIRONMENT: Set to "Sandbox" for testing, or "Production" for production
  • IAP_ROOT_CA_DIR: Path to a directory containing all of Apple's Root Certificates. Defaults to ./apple-root-ca. You can download the certificates from Apple's website

Lightning Network

  • LN_NODE_ADDRESS: The public address of the Lightning Network node
  • LN_WS_PROXY: The public address of the Lightning Network Websocket proxy
  • LN_NODE_ID: The public node ID of the Lightning Network node in hex format
  • LN_RUNE: The public node ID of the Lightning Network node
  • TEST_PRODUCTS: Set to "true" to enable test products for Lightning Network payments with a value of 1 satoshi (for testing only)

OTP login

  • OTP_MAX_TRIES: The maximum number of OTP tries allowed before locking the user out. Defaults to 10.
  • SESSION_EXPIRY: The time in seconds before a session expires. Defaults to 1 week.
  • OTP_EXPIRY: The time in seconds before an OTP expires. Defaults to 5 minutes.

Extras

  • CORS_ALLOWED_ORIGINS (optional): Comma separated list of allowed origins for CORS. Generally only needed for testing or staging.
  • ALLOW_HTTP_AUTH: Set to "true" to enable HTTP basic auth for all endpoints. (Useful for testing locally, otherwise it forces HTTPS)
  • ADMIN_PASSWORD: Password for admin API endpoints (optional, leaving this blank will disable admin endpoints)
  • LN_INVOICE_CHECK_TIMEOUT_MS: Timeout in milliseconds for checking the status of a Lightning Network invoice. Defaults to 60000 (60 seconds), and shorter for tests
  • ENABLE_DEBUG_ENDPOINTS: Set to "true" to enable debug endpoints (for testing or staging only). This includes endpoints to delete users or force UUIDs.

npm scripts

  • npm run dev: Start the server in development mode and mock the DeepL translation service
  • npm start: Start the server in production mode
  • npm test: Run the unit tests
  • npm run type-check: Run a type check on all files in the project
  • npm run type-check-path -- <path>: Run a type check on a specific file or directory

Testing and debugging tips

IAP (Apple In-app Purchase) receipt verification

  • Run the server with DEBUG=iap to see verbose debug logs for the IAP receipt verification process. You can also use those logs to find which UUID an IAP is associated with.
  • If you need to force a specific UUID for a user (e.g. when you reset the db but can't reset your Sandbox IAP history), you can enable the ENABLE_DEBUG_ENDPOINTS environment variable and use this debug endpoint to force a UUID for a user: 
curl -X PUT http://<HOST_AND_PORT>/admin/users/<PUBKEY_HEX_FORMAT>/account-uuid \
     -H "Content-Type: application/json" \
     -d '{"admin_password": "<ADMIN_PASSWORD_SET_ON_THE_RESPECTIVE_ENV_VARIABLE>", "account_uuid": "<UUID_FOUND_ON_IAP_TRANSACTION>"}'

Failures around Lightning Network payments

Ensure you are running Node.js v18.x. Preferably, use the provided nix-shell environment to ensure you are using the correct version of Node.js.

There is a known issue with Node.js v22.x where the ln.connect_and_init call does not work with the way things are setup.