-module Twitter.Http
+module Twitter.Http (
+ get_user_new_statuses,
+ get_user_timeline,
+ http_get
+ )
where
-import Network.Curl
-import System.IO (hPutStrLn, stderr)
+import qualified Data.ByteString.Lazy as B
+import qualified Data.ByteString.Char8 as BC
+import qualified Data.Conduit as C
+import Data.Conduit.Binary (sinkLbs)
+import Network.HTTP.Conduit
+import Web.Authenticate.OAuth (
+ OAuth(..),
+ Credential,
+ newCredential,
+ newOAuth,
+ signOAuth)
+
+import Configuration (Cfg(..))
-- |The API URL of username's timeline.
--
-- See,
--
--- <http://dev.twitter.com/doc/get/statuses/user_timeline>
+-- <https://dev.twitter.com/docs/api/1.1/get/statuses/user_timeline>
--
user_timeline_url :: String -> String
user_timeline_url username =
- concat [ "http://api.twitter.com/1/statuses/user_timeline.xml",
- "?screen_name=" ++ username,
- "&include_rts=true",
- "&count=10" ]
-
--- |Given username's last status id, constructs the API URL for
--- username's new statuses. Essentially, 'user_timeline_url' with a
--- "since_id" parameter tacked on.
+ concat [ "https://api.twitter.com/",
+ "1.1/",
+ "statuses/",
+ "user_timeline.json?",
+ "screen_name=",
+ username,
+ "&include_rts=true&",
+ "count=10" ]
+
+
+-- | Given username's last status id, constructs the API URL for
+-- username's new statuses. Essentially, 'user_timeline_url' with a
+-- "since_id" parameter tacked on.
user_new_statuses_url :: String -> Integer -> String
user_new_statuses_url username last_status_id =
- concat [ user_timeline_url username,
- "&since_id=" ++ (show last_status_id) ]
-
-
--- |Return's username's timeline, or 'Nothing' if there was an error.
-get_user_timeline :: String -> IO (Maybe String)
-get_user_timeline username = do
- let uri = (user_timeline_url username)
- timeline <- (http_get uri)
- return timeline
-
-
--- Returns the XML representing all of username's statuses that are
--- newer than last_status_id.
-get_user_new_statuses :: String -> Integer -> IO (Maybe String)
-get_user_new_statuses username last_status_id = do
- let uri = (user_new_statuses_url username last_status_id)
- new_statuses <- (http_get uri)
- return new_statuses
-
-
--- |Uses the CURL API to retrieve uri. Returns 'Nothing' if there was
--- an error.
-http_get :: String -> IO (Maybe String)
-http_get uri = withCurlDo $ do
- resp <- curlGetString uri [CurlTimeout 45]
-
- case resp of
- (CurlOK, body) -> return (Just body)
- (code, _) -> do
- hPutStrLn stderr ("HTTP Error: " ++ (show code))
- return Nothing
+ url ++ "&since_id=" ++ since_id
+ where
+ url = user_timeline_url username
+ since_id = show last_status_id
+
+
+-- | Return's username's timeline.
+get_user_timeline :: Cfg -> String -> IO B.ByteString
+get_user_timeline cfg username = do
+ let uri = user_timeline_url username
+ http_get cfg uri
+
+
+-- | Returns the JSON representing all of username's statuses that are
+-- newer than last_status_id.
+get_user_new_statuses :: Cfg -> String -> Integer -> IO B.ByteString
+get_user_new_statuses cfg username last_status_id = do
+ let uri = user_new_statuses_url username last_status_id
+ http_get cfg uri
+
+
+-- | Retrieve a URL, or crash.
+http_get :: Cfg -> String -> IO B.ByteString
+http_get cfg url = do
+ manager <- newManager def
+ request <- parseUrl url
+
+ C.runResourceT $ do
+ signed_request <- signOAuth oauth credential request
+ response <- http signed_request manager
+ responseBody response C.$$+- sinkLbs
+
+ where
+ consumer_key' = BC.pack (consumer_key cfg)
+ consumer_secret' = BC.pack (consumer_secret cfg)
+ access_token' = BC.pack (access_token cfg)
+ access_secret' = BC.pack (access_secret cfg)
+
+ oauth :: OAuth
+ oauth = newOAuth {
+ oauthConsumerKey = consumer_key',
+ oauthConsumerSecret = consumer_secret'
+ }
+
+ credential :: Credential
+ credential = newCredential access_token' access_secret'