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Github

Ajax = require "ajax"
{Observable} = require "model"
Repository = require "./repository"

{defaults, extend} = require "./lib/util"

Github handles our connections to the Github API. May be optionally passed a promise that when fulfilled will set the authorization token.

Github = (tokenPromise) ->
  lastRequest = Observable()

  ajax = Ajax()
  ajax.complete (e, xhr) ->
    lastRequest xhr

Our OAuth token for making API requests. We can still make anonymous requests without it.

  token = null

  tokenPromise?.then (tokenValue) ->
    token = tokenValue

Make a call to the github API. The path can be either a relative path such as users/STRd6 or an absolute path like https://api.github.com/users/octocat or user.url.

We attach our accessToken if present.

api returns a promise for easy chaining.

  api = (path, options={}) ->
    if path.match /^http/
      url = path
    else
      url = "https://api.github.com/#{path}"

    options.headers ||= {}

    if token
      options.headers["Authorization"] = "token #{token}"

    options = extend
      url: url
      type: "GET"
      responseType: "json"
      contentType: "application/json; charset=utf-8"
    , options

    ajax(options)

Publicly expose api method.

  api: api

Also expose lastRequest.

  lastRequest: lastRequest

Getter/Setter for auth token.

  token: (newValue) ->
    if arguments.length > 0
      token = newValue
    else
      token

Expose the Repository constructor so that others can create repositories from raw data.

  Repository: (data={}) ->
    # Use our api for the repository
    defaults data,
      requester: api

    Repository(data)

Get a repository, returns a promise that will have a repository one day.

  repository: (fullName) ->
    # TODO: Consider returning a repository proxy immediately
    #   may need to be weighed carefully with the tradeoffs of observables.
    # TODO: Consider creating from a full url in addition to a full name.

    api("repos/#{fullName}")
    .then (data) ->
      defaults data,
        requester: api

      Repository(data)

Expose authorizationUrl to instances as well.

  authorizationUrl: Github.authorizationUrl

A URL that will authorize a user with the specified scope for the given app.

Github.authorizationUrl = (clientId, scope="user:email") ->
  "https://github.com/login/oauth/authorize?client_id=#{clientId}&scope=#{scope}"

module.exports = Github