json-courier is a utility library for creating handling on the client for simple APIs.

Only the POST method and JSON format are supported. This limitation is intentional; this small library is designed to help with the boring parts not do everything.

Basic Example:

var courier = require('json-courier');
var api = courier('/api/1.0');

var ExampleRepo = function () {
	// the type's constructor
};

ExampleRepo.prototype = {

	// accepts is an array of status'es that should go though resolve,
	// everything thats not in accepts goes though reject path; errors also
	// go though reject path (you can check for "stack" prop to diferentiate)
	list: function (payload, accepts) {
		// a promise will be returned; the lie library is used under the hood
		return api.req('example/list', payload, accepts);
	},

	// same as above; shorthand syntax
	add: api.f('example/add')

};

module.exports = ExampleRepo;

On the server, all api requests come in the form of,

{
	"auth" : "[ value of api.auth() ]", 
	"data" : "[ the payload ]"
}

If you recieve null for auth the request should be treated as coming from a user that's not authenticated.

Authentication

You can set and retrieve auth via api.authWith(authToken) and api.auth()

See example above for how the request looks.

Server Response

The server is expected to respond with at least status and data. The data field should be null in case of no response.

Here is a the simplest success response:

{
	"status" : "success",
	"data"   : null
}

An error should have status set to error and set the error message in the data field.

Example error:

{
	"status" : "error",
	"data"   : "Example error"
}

You can have any status you wish. It's recomended you don't hardcode the accepts value when defining the API on the client side; it's better for the calling code to specify what status it's capable of accepting.

Domain

By default there is no domain, the path is assumed relative to the current root of the current domain. To set a domain use courier.domainPrefix; this is a global setting however.