-module Twitter.Http
+module Twitter.Http (
+ get_user_new_statuses,
+ get_user_timeline,
+ http_get )
where
-import Network.Curl
-import System.IO (hPutStrLn, stderr)
-
--- |The API URL of username's timeline.
+import qualified Data.ByteString.Lazy as B ( ByteString )
+import qualified Data.ByteString.Char8 as BC ( pack )
+import Network.HTTP.Client (
+ httpLbs,
+ newManager,
+ parseUrl,
+ responseBody )
+import Network.HTTP.Client.TLS ( tlsManagerSettings )
+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" ]
-
-status_url :: Integer -> String
-status_url status_id =
- concat [ "http://api.twitter.com/1/statuses/show/",
- (show status_id),
- ".xml" ]
-
--- |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) ]
-
-
-get_status :: Integer -> IO (Maybe String)
-get_status status_id = do
- let uri = (status_url status_id)
- status <- (http_get uri)
- return status
-
+ url ++ "&since_id=" ++ since_id
+ where
+ url = 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
-
-
--- | Options that will be passed to every curl request.
-curl_options :: [CurlOption]
-curl_options =
- [ CurlTimeout 45,
- -- The Global cache is not thread-friendly.
- CurlDNSUseGlobalCache False,
- -- And we don't want to use a DNS cache anyway.
- CurlDNSCacheTimeout 0 ]
+-- | 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
--- | 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
- -- Create a Curl instance.
- curl <- initialize
+-- | 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
- -- Perform the request, and get back a CurlResponse object.
- -- The cast is needed to specify how we would like our headers
- -- and body returned (Strings).
- resp <- do_curl_ curl uri curl_options :: IO CurlResponse
- -- Pull out the response code as a CurlCode.
- let code = respCurlCode resp
-
- case code of
- CurlOK -> return $ Just (respBody resp)
- error_code -> do
- hPutStrLn stderr ("HTTP Error: " ++ (show error_code))
- -- If an error occurred, we want to dump as much information as
- -- possible. If this becomes a problem, we can use respGetInfo to
- -- query the response object for more information
- return Nothing
+-- | Retrieve a URL, or crash. The request is signed using all of the
+-- OAuth junk contained in the configuration.
+--
+http_get :: Cfg -> String -> IO B.ByteString
+http_get cfg url = do
+ manager <- newManager tlsManagerSettings
+ request <- parseUrl url
+ signed_request <- signOAuth oauth credential request
+ response <- httpLbs signed_request manager
+ return $ responseBody response
+
+ 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'
projects / dead / halcyon.git / blobdiff