Flickrex

Flickr client library for Elixir.

The package's main modules are:

• Flickrex - performs API requests.
• Flickrex.Auth - handles authentication.
• Flickrex.Flickr - mirrors the Flickr API method namespace.
• Flickrex.Upload - handles photo uploads.
• Flickrex.URL - generates Flickr URLs for photos, etc.

Install the latest version of Flickrex from https://hex.pm/packages/flickrex

Documentation is available at http://hexdocs.pm/flickrex

Source code is available at https://github.com/christopheradams/flickrex

Hello World

{:ok, resp} = Flickrex.Flickr.Photos.get_recent() |> Flickrex.request()

%{"photos" => photos} = resp.body

Installation

Add flickrex to your list of applications and dependencies in mix.exs:

def application do
  [applications: [:logger, :flickrex]]
end

def deps do
  [{:flickrex, "~> 0.8"}]
end

Configuration

Create an application on Flickr and add the API keys to your Mix config file:

config :flickrex, :config, [
  consumer_key:    "...",
  consumer_secret: "...",
]

The configuration also accepts oauth_token and oauth_token_secret keys, but it is highly recommended to store these values separately for each authenticated user, rather than setting them globally.

Usage

Flickr API

operation = Flickrex.Flickr.Photos.get_recent(per_page: 5)
{:ok, resp} = Flickrex.request(operation)

%{"photos" => photos} = resp.body

Configuration Override

config = [consumer_key: "...", consumer_secret: "..."]
{:ok, resp} = Flickrex.request(operation, config)

Authentication

{:ok, %{body: request}} = Flickrex.Auth.request_token() |> Flickrex.request()

{:ok, auth_url} =
  request.oauth_token
  |> Flickrex.Auth.authorize_url()
  |> Flickrex.request()

# Open the URL in your browser, authorize the app, and get the verify token
verifier = "..."

{:ok, %{body: access}} =
  request.oauth_token
  |> Flickrex.Auth.access_token(request.oauth_token_secret, verifier)
  |> Flickrex.request()

# You can now call methods that require authorization
config = [oauth_token: access.oauth_token, oauth_token_secret: access.oauth_token_secret]
{:ok, resp} = Flickrex.Flickr.Test.login() |> Flickrex.request(config)

Testing

Run the test suite:

mix test

To run a test that hits the Flickr API, set these environment variables:

• FLICKR_CONSUMER_KEY
• FLICKR_CONSUMER_SECRET

Run the test with:

mix test --only flickr_api

If testing this package on Travis CI, the same Flickr environment variables must be set for the repository.

Bypass and Mocks

If you are using the Flickrex package in your own application, you have the option of bypassing the endpoint URLs or mocking the HTTP client, either in your config file or in options passed to Flickrex.request/2.

An HTTP client mock needs to implement the Flickrex.Request.HttpClient behaviour.

# test.exs
config :flickrex, :config, [
  http_client: MyApp.Flickrex.MockClient,
]

If bypassing the endpoints, the URLs are set separately for each service:

# test.exs
config :flickrex, :api, url: "http://localhost/api"
config :flickrex, :upload, url: "http://localhost/upload"

Development

The Flickr modules are generated using data from the Flickr APIs reflection methods. If the API ever changes, new data can be fetched with the Mix task:

mix flickrex.reflect

The data files are committed to the repository so that network and API access is not required to compile this library.

Documentation

To build the documentation from source:

mix docs

License

Flickrex copyright © 2017, Christopher Adams

Flickrex logo based on Venn Diagram CC-by Eddy Ymeri