cloud-api-http-client

Lightweight wrapper for littleBits Cloud HTTP API

Installation

npm install --save @littlebits/cloud-http

Example

var api = require('littlebits-cloud-http')
          .defaults({ access_token: 'askdjfldaksjfkdlsjfdkl234324' })
// We've created a new instance of our api with an access_token to be used by all requests.

api = api.defaults({ device_id: 'foobar' })
// All api functions will now default to using device_id
// 'foobar' for those abstracting HTTP endpoints that use
// the {device_id} path-param (e.g. /devices/{device_id}/output).

api.output()
// -> <err> <result>
// Neat; By default functions log to console
// which is great for playing around.

api.output('foobar2')
// The device_id can also be specified as the
// first argument (overriding defaults, not mutating),
// allowing the second argument to focus on
// your payload...

api.output('foobar2', { percent: 50, duration_ms: 5000 })
// like so :). Of course you can work with objects only
// as needed/desired...

api.output({device_id: 'foobar2', percent: 50, duration_ms: 5000 })
// Hm, these arguments are getting repetitive, lets stop this.

var output = api.output.defaults({device_id: 'foobar2', percent: 50, duration_ms: 5000 })
// Better. Now we have a output function with new defaults.
// and we can always call .defaults again should we wish.
// Lets use it now.

output(function(err, result){
  if (err) ...

  ...
});
// Pass your own callback to handle the
// the io error and/or return value. This of course
// elliminates the default logging seen above.

// Helpful notes about .defaults()

// 1. it does not mutate
//   - .defaults() on the api object returns an entirely new api
//   - .defaults() on a function returns an entirely new function
assert api.defaults({...}) !== api

// 2. it is infinitly recrusive so this is possible (but psychotic)
api.defaults({...}).defaults({...})/* ad infinitum*/.output.defaults({...}).defaults({...}) /* ad infinitum */

// 3. defaults can be introspected by passing no arguments, e.g. given a stock api instnace
api.defaults()
// -> { host: 'https://api-http.littlebitscloud.cc', version: '2' }

// Fin.

// You've seen several different function signatures.
// They are at your disposal to choose as desired.
// See API docs for more details and Have fun!

API Functions

Abbreviated information. See API Function Signatures for details about the argument pattern uniformly accepted.

---

.defaults()

See Defaults System.

Key Points:

• Supports snake_case or camelCase key names
• Returns new instances, does not mutate existing defaults
• Returns current defaults if invoked with no arguments

---

.devices()

Get information for all devices.

callback result argument: [Device]

---

.device()

Get information for one device.

options arguments

• device_id :: String

callback result argument: Device

---

.activate()

Activate one device. (FYI: associates device to user; User id is attained from the provided access_token)

options arguments

• device_id :: String

callback result argument: Device

---

.deactivate()

Dectivate one device.

options arguments

• device_id :: String

callback result argument: Device

---

.output()

Send amplitude out of the device.

options arguments:

• percent :: Float | >= 0, <= 100
• duration_ms :: Integer | >= 0
• device_id :: String

callback result argument: TODO

---

.light()

Activate device light.

options arguments:

• color :: String | "green" "yellow" "red" "blue" "purple" "white" "cyan" "clownbarf"
• mode :: String | "blink" "hold"
• duration_ms :: Integer | >= 0
• device_id :: String

callback result argument: TODO

---

.subscriptions()

Get the subscriptions for given sub/pub.

options arguments:

• ? subscriber_id :: device_id || uri
  Filter subscriptions to those where subscriber_id matches.
• ? publisher_id :: device_id
  Filter subscriptions to those where publisher_id matches.

callback result argument: [Subscription]

---

.unsubscribe()

Delete the subscription for given sub/pub.

options arguments:

• subscriber_id :: device_id || uri
• publisher_id :: device_id

callback result argument: TODO

---

.subscribe()

Create a new subscription for given sub/pub.

options arguments:

• subscriber_id :: device_id || uri
• publisher_id :: device_id
• ? publisher_events :: [Event]
  Defaults to: ["amplitude:delta:ignite"]

callback result argument: TODO

Types

Event

A String of any following value:

"amplitude"
"amplitude:delta:sustain"
"amplitude:delta:ignite"
"amplitude:delta:release"
"amplitude:delta:nap"
"amplitude:level:active"
"amplitude:level:idle"

Subscription

{
  subscriber_id    :: device_id || URI
  publisher_id     :: device_id
  publisher_events :: [Event]
}

Device

{
  id            :: String
  user_id       :: Integer
  label         :: String
  subscribers   :: [Subscription]
  subscriptions :: [Subscription]
}

API Function Signatures

All API functions (except .defaults) are variadic-polymorphic, following these defintions.

Arity 0

f :: -> void

e.g.:

api.output()

---

Arity 1

f :: (err, * -> void) -> void

f :: ID -> void

f :: Options -> void

e.g.:

api.output(function(err, result){ /*...*/ })
api.output('foobar-device-id')
api.output({ device_id: 'foobar-device-id', duration_ms: 500 })

---

Arity 2

f :: ID, (err, * -> void) -> void

f :: Options, (err, * -> void) -> void

f :: ID, Options -> void

e.g.:

api.output('foobar-device-id', function(err, result){ /*...*/ })
api.output({ device_id: 'foobar-device-id', duration_ms: 500 }, function(err, result){ /*...*/ })
api.output('foobar-device-id', { duration_ms: 500 })

---

Arity 3

f :: ID, Options, (err, * -> void) -> void

e.g.:

api.output('foobar-device-id', { duration_ms: 500 }, function(err, result){ /*...*/ })

For all arity cases:

• Options arguments that you omit are patched by defaults. You may customize defaults (see next section).

• ID refers to device_id which can alternatively be argued in Options as device_id. Certain functions do not need a device_id, such as subscribe in which case it is useless (but harmless), to argue this.

• callback is patched by console.log. This is useful for rapid manual tests, playing around, etc. It also helps keep track of unhandled callbacks which you should be handling in non-trivial work. If you really want a noop then just argue one.

Defaults system

.defaults()

get

defaults :: -> Options

Get the current defaults.

set

defaults :: Options -> API

Create a new api with new defaults. Existing api instance is not mutated. All functions of new api instance will read from these new defaults.

This is a good place to argue access_token etc.

options arguments:

• ? host :: URI
  The HTTP server to make requests against. By default equals 'api-http.littlebitscloud.cc' but you may override as desired, e.g. work against local development servers.
• ? version :: String
  The littleBits Cloud HTTP API version to use. By default equals '2'.
• ? access_token :: String
  The OAuth access_token that will be used by the server to authorize your requsts.

.{api_function}.defaults()

get

defaults :: -> Options

Get the current defaults.

set

defaults :: Options -> API_Function

Create a new api function (f) with new defaults. Existing f is not mutated.

options arguments: See docs for each function respectively.