mirror of
https://github.com/freckle/yesod-auth-oauth2.git
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2d3d1d2a8e
Handles the common case of fetching profile information from a single JSON endpoint. Throws InvalidProfileResponse if JSON parsing fails.
108 lines
3.3 KiB
Haskell
108 lines
3.3 KiB
Haskell
{-# LANGUAGE CPP #-}
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{-# LANGUAGE OverloadedStrings #-}
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-- |
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--
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-- OAuth2 plugin for http://spotify.com
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--
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module Yesod.Auth.OAuth2.Spotify
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( oauth2Spotify
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, module Yesod.Auth.OAuth2
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) where
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#if __GLASGOW_HASKELL__ < 710
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import Control.Applicative ((<$>), (<*>), pure)
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#endif
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import Control.Monad (mzero)
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import Data.Aeson
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import Data.ByteString (ByteString)
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import Data.Maybe
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import Data.Text (Text)
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import Data.Text.Encoding (encodeUtf8)
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import Yesod.Auth
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import Yesod.Auth.OAuth2
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import qualified Data.ByteString as B
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import qualified Data.Text as T
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data SpotifyUserImage = SpotifyUserImage
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{ spotifyUserImageHeight :: Maybe Int
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, spotifyUserImageWidth :: Maybe Int
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, spotifyUserImageUrl :: Text
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}
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instance FromJSON SpotifyUserImage where
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parseJSON (Object v) = SpotifyUserImage
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<$> v .: "height"
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<*> v .: "width"
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<*> v .: "url"
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parseJSON _ = mzero
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data SpotifyUser = SpotifyUser
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{ spotifyUserId :: Text
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, spotifyUserHref :: Text
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, spotifyUserUri :: Text
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, spotifyUserDisplayName :: Maybe Text
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, spotifyUserProduct :: Maybe Text
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, spotifyUserCountry :: Maybe Text
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, spotifyUserEmail :: Maybe Text
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, spotifyUserImages :: Maybe [SpotifyUserImage]
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}
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instance FromJSON SpotifyUser where
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parseJSON (Object v) = SpotifyUser
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<$> v .: "id"
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<*> v .: "href"
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<*> v .: "uri"
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<*> v .:? "display_name"
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<*> v .:? "product"
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<*> v .:? "country"
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<*> v .:? "email"
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<*> v .:? "images"
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parseJSON _ = mzero
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oauth2Spotify :: YesodAuth m
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=> Text -- ^ Client ID
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-> Text -- ^ Client Secret
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-> [ByteString] -- ^ Scopes
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-> AuthPlugin m
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oauth2Spotify clientId clientSecret scope = authOAuth2 "spotify"
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OAuth2
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{ oauthClientId = encodeUtf8 clientId
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, oauthClientSecret = encodeUtf8 clientSecret
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, oauthOAuthorizeEndpoint = B.append "https://accounts.spotify.com/authorize?scope=" (B.intercalate "%20" scope)
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, oauthAccessTokenEndpoint = "https://accounts.spotify.com/api/token"
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, oauthCallback = Nothing
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}
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$ fromProfileURL "spotify" "https://api.spotify.com/v1/me" toCreds
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toCreds :: SpotifyUser -> Creds m
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toCreds user = Creds
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{ credsPlugin = "spotify"
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, credsIdent = spotifyUserId user
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, credsExtra = mapMaybe getExtra extrasTemplate
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}
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where
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userImage :: Maybe SpotifyUserImage
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userImage = spotifyUserImages user >>= listToMaybe
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userImagePart :: (SpotifyUserImage -> Maybe a) -> Maybe a
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userImagePart getter = userImage >>= getter
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extrasTemplate = [ ("href", Just $ spotifyUserHref user)
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, ("uri", Just $ spotifyUserUri user)
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, ("display_name", spotifyUserDisplayName user)
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, ("product", spotifyUserProduct user)
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, ("country", spotifyUserCountry user)
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, ("email", spotifyUserEmail user)
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, ("image_url", spotifyUserImageUrl <$> userImage)
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, ("image_height", T.pack . show <$> userImagePart spotifyUserImageHeight)
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, ("image_width", T.pack . show <$> userImagePart spotifyUserImageWidth)
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]
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getExtra :: (Text, Maybe Text) -> Maybe (Text, Text)
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getExtra (key, val) = fmap ((,) key) val
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