rack-passbook

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Rack middleware that provides Passbook web service endpoints.

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# Rack::Passbook

> This project is no longer maintained.

[Passbook](https://www.apple.com/ios/whats-new/#passbook)
manages boarding passes, movie tickets, retail coupons, & loyalty cards. Using the [PassKit API](https://developer.apple.com/documentation/passkit),
developers can register web services to automatically update content on the pass,
such as gate changes on a boarding pass
or adding credit to a loyalty card.

Apple [provides a specification](https://developer.apple.com/library/prerelease/ios/#documentation/PassKit/Reference/PassKit_WebService/WebService.html)
for a REST-style web service protocol to communicate with Passbook,
with endpoints to get the latest version of a pass,
register / unregister devices to receive push notifications for a pass,
and query for passes registered for a device.

Rack::Passbook provides those specified endpoints.

## Requirements

- Ruby 1.9 or higher
- PostgreSQL 9.1 or higher

## Installation

### Gemfile

```ruby
gem 'rack-passbook', require: 'rack/passbook'
```

## Example Usage

Rack::Passbook can be run as Rack middleware or as a single web application.
All that's required is a connection to a Postgres database.

An example application can be found in the `/example` directory of this repository.

### config.ru

```ruby
require 'bundler'
Bundler.require

run Rack::Passbook
```

---

## Specification

What follows is a summary of the specification.
The complete specification can be found in the
[Passbook Web Service Reference](https://developer.apple.com/library/prerelease/ios/#documentation/PassKit/Reference/PassKit_WebService/WebService.html).

### Getting the Latest Version of a Pass

```
GET https://example.com/v1/passes/:passTypeIdentifier/:serialNumber
```

- **passTypeIdentifier** The pass’s type, as specified in the pass.
- **serialNumber** The unique pass identifier, as specified in the pass.

**Response**

- If request is authorized, return HTTP status 200 with a payload of the pass data.
- If the request is not authorized, return HTTP status 401.
- Otherwise, return the appropriate standard HTTP status.

### Getting the Serial Numbers for Passes Associated with a Device

```
GET https://example.com/v1/devices/:deviceLibraryIdentifier/registrations/:passTypeIdentifier[?passesUpdatedSince=tag]
```

- **deviceLibraryIdentifier** A unique identifier that is used to identify and authenticate the device.
- **passTypeIdentifier** The pass’s type, as specified in the pass.
- **serialNumber** The unique pass identifier, as specified in the pass.
- **passesUpdatedSince** _Optional_ A tag from a previous request.

**Response**

If the `passesUpdatedSince` parameter is present, return only the passes that have been updated since the time indicated by tag. Otherwise, return all passes.

- If there are matching passes, return HTTP status 200 with a JSON dictionary with the following keys and values:
  - **lastUpdated** _(string)_ The current modification tag.
  - **serialNumbers** _(array of strings)_ The serial numbers of the matching passes.
- If there are no matching passes, return HTTP status 204.
- Otherwise, return the appropriate standard HTTP status.

### Registering a Device to Receive Push Notifications for a Pass

```
POST https://example.com/v1/devices/:deviceLibraryIdentifier/registrations/:passTypeIdentifier/:serialNumber
```

- **deviceLibraryIdentifier** A unique identifier that is used to identify and authenticate the device.
- **passTypeIdentifier** The pass’s type, as specified in the pass.
- **serialNumber** The unique pass identifier, as specified in the pass.

The POST payload is a JSON dictionary, containing a single key and value:

- **pushToken** The push token that the server can use to send push notifications to this device.

**Response**

- If the serial number is already registered for this device, return HTTP status 200.
- If registration succeeds, return HTTP status 201.
- If the request is not authorized, return HTTP status 401.
- Otherwise, return the appropriate standard HTTP status.

### Unregistering a Device

```
DELETE https://example.com/v1/devices/:deviceLibraryIdentifier/registrations/:passTypeIdentifier/:serialNumber
```

- **deviceLibraryIdentifier** A unique identifier that is used to identify and authenticate the device.
- **passTypeIdentifier** The pass’s type, as specified in the pass.
- **serialNumber** The unique pass identifier, as specified in the pass.

**Response**

- If disassociation succeeds, return HTTP status 200.
- If the request is not authorized, return HTTP status 401.
- Otherwise, return the appropriate standard HTTP status.

---

## Contact

[Mattt](https://twitter.com/mattt)

## License

Rack::Passbook is available under the MIT license.
See the LICENSE file for more info.

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