bbucek/elixtagram

:camera: Instagram API client for the Elixir language (elixir-lang)

Elixtagram

Elixtagram is a simple Instagram client for Elixir.

Read the docs

I've created an example application with Phoenix here

Usage

Installation

Add the following to your mix.exs

...

def application do
  [mod: {InstagramPhoenixExample, []},
   applications: [:elixtagram]]
end

...

defp deps do
  [{:elixtagram, "~> 0.2.5"}]

...

Configuration

Elixtagram will first look for application variables, then environment variables. This is useful if you want to set application variables locally and environment variables in production (e.g. on Heroku). That being said, I recommend using Dotenv locally.

config/dev.exs

config :elixtagram,
  instagram_client_id: "YOUR-CLIENT-ID",
  instagram_client_secret: "YOUR-CLIENT-SECRET",
  instagram_redirect_uri: "YOUR-REDIRECT-URI"

.env

INSTAGRAM_CLIENT_ID=YOUR-CLIENT-ID
INSTAGRAM_CLIENT_SECRET=YOUR-CLIENT-SECRET
INSTAGRAM_REDIRECT_URI=YOUR-REDIRECT-URI

You can also configure these programatically at runtime if you wish:

iex(1)> Elixtagram.configure("YOUR-CLIENT-ID", "YOUR-CLIENT-SECRET", "YOUR-REDIRECT-URI")
{:ok, []}

Usage

Authenticate a user

# Generate a URL to send them to
iex(1)> Elixtagram.authorize_url!
"https://api.instagram.com/oauth/authorize/?client_id=XXX&redirect_uri=localhost%3A4000&response_type=code"

# Instagram will redirect them back to your INSTAGRAM_REDIRECT_URI, so once they're there, you need to catch the url param 'code', and exchange it for an access token.

iex(2)> code = "XXXXXXXXXX"
"XXXXXXXXXX"
iex(3)> access_token = Elixtagram.get_token!(code: code).access_token
"XXXXXXXXXXXXXXXXXXXX"

# Now we can optionally set this as the global token, and make requests with it by passing :global instead of a token.
iex(4)> Elixtagram.configure(:global, access_token)
{:ok, []}

Unauthenticated endpoints

There are a lot of endpoints you can use without an access token from a user. Most methods can be called in one of three ways, for example:

# Unauthenticated
iex(1)> Elixtagram.tag("lifeisaboutdrugs")
%Elixtagram.Model.Tag{media_count: 27, name: "lifeisaboutdrugs"}

# Explicitly authenticated
iex(1)> Elixtagram.tag("lifeisaboutdrugs", "XXXXXXXXXXXXXXXXX")
%Elixtagram.Model.Tag{media_count: 27, name: "lifeisaboutdrugs"}

# Implicitly authenticated (only works if you have configured a global token)
iex(1)> Elixtagram.tag("lifeisaboutdrugs", :global)
%Elixtagram.Model.Tag{media_count: 27, name: "lifeisaboutdrugs"}

Authenticated endpoints

Authenticated endpoints are mostly things which are about getting the current user's stuff

iex(1)> Elixtagram.user_feed(%{count: 2}, "XXXXXXXXXXXXXXXXX")
[%Elixtagram.Model.Media{...}, %Elixtagram.Model.Media{...}]

iex(2)> Elixtagram.user_feed(%{count: 2}, :global)
[%Elixtagram.Model.Media{...}, %Elixtagram.Model.Media{...}]

All of the available methods and the ways to call them are in the docs

Running the tests

TL;DR: mix test

Longer answer:

$ mix deps.get
Running dependency resolution
All dependencies up to date

$ mix test
...........................................................................................

Finished in 17.6 seconds (2.9s on load, 14.7s on tests)
91 tests, 0 failures

Randomized with seed 846369

$ mix coveralls
...........................................................................................

Finished in 13.1 seconds (1.9s on load, 11.2s on tests)
91 tests, 0 failures

Randomized with seed 972312
----------------
COV    FILE                                        LINES RELEVANT   MISSED
100.0% lib/elixtagram.ex                             806       49        0
100.0% lib/elixtagram/api/base.ex                     84       24        0
100.0% lib/elixtagram/api/comments.ex                 30        3        0
100.0% lib/elixtagram/api/follows.ex                  37        5        0
100.0% lib/elixtagram/api/likes.ex                    30        3        0
100.0% lib/elixtagram/api/locations.ex                56       12        0
100.0% lib/elixtagram/api/media.ex                    37        6        0
100.0% lib/elixtagram/api/tags.ex                     33        5        0
100.0% lib/elixtagram/api/users.ex                    59       14        0
100.0% lib/elixtagram/config.ex                       42       10        0
  0.0% lib/elixtagram/exception.ex                     3        0        0
  0.0% lib/elixtagram/model.ex                        38        0        0
100.0% lib/elixtagram/oauth_strategy.ex               50       13        0
100.0% lib/elixtagram/parser.ex                       48       10        0
[TOTAL] 100.0%
----------------

Status

It's mostly complete, but these things are missing:

• Pagination of results for certain data types
• Real time subscriptions
• Secure requests

Changelog

0.2.5

• Add credo in dev environment
• Improve code readability and resolve credo warnings (thanks rrrene!)

0.2.4

• Update the OAuth2 library to 0.5 (thanks for the PR steffenix!)
• add a couple more test cases around pagination to get back to 100% coverage

0.2.3

• Minor pagination bugfix - was throwing a KeyError when requesting a paginated user_follows and on the last page of results.

0.2.2

• Add pagination support for user_follows, this doesn't break the existing user_follows/2 and user_follows/3 API.

0.2.1

• Add Elixtagram.authorize_url!/3, which takes a state argument to pass back to the callback url. This is useful for things like CSRF protection (read more here). This change doesn't break or change the existing API.

0.2.0

• Change the api of Elixtagram.user_follows/1 & Elixtagram.user_follows/2 (now respectively Elixtagram.user_follows/2 & Elixtagram.user_follows/3) to accept a count argument.