From d0e391fb165ab23bb08dc02871747e0131c1e723 Mon Sep 17 00:00:00 2001
From: Dragos Boca <dragos.boca@oracle.com>
Date: Tue, 25 Aug 2015 13:37:23 +0300
Subject: define flag 'with_conduit'

---
 src/Plugins/Monitors/Weather.hs | 36 +++++++++++++++++++++++++++++++++---
 1 file changed, 33 insertions(+), 3 deletions(-)

(limited to 'src')

diff --git a/src/Plugins/Monitors/Weather.hs b/src/Plugins/Monitors/Weather.hs
index 5f5fb6f..d458279 100644
--- a/src/Plugins/Monitors/Weather.hs
+++ b/src/Plugins/Monitors/Weather.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE CPP #-}
 -----------------------------------------------------------------------------
 -- |
 -- Module      :  Plugins.Monitors.Weather
@@ -18,12 +19,14 @@ import Plugins.Monitors.Common
 
 import qualified Control.Exception as CE
 
+#ifdef HTTP_CONDUIT
 import Network.HTTP.Conduit
 import Network.HTTP.Types.Status
 import Network.HTTP.Types.Method
-
---import qualified Data.ByteString.Lazy as L
 import qualified Data.ByteString.Lazy.Char8 as B
+#else
+import Network.HTTP
+#endif
 
 import Text.ParserCombinators.Parsec
 
@@ -177,7 +180,8 @@ defUrl = "http://weather.noaa.gov/pub/data/observations/metar/decoded/"
 stationUrl :: String -> String
 stationUrl station = defUrl ++ station ++ ".TXT"
 
-getData:: String -> IO String
+getData :: String -> IO String
+#ifdef HTTP_CONDUIT
 getData station = CE.catch (do
     manager <- newManager tlsManagerSettings 
     request <- parseUrl $ stationUrl station
@@ -186,6 +190,13 @@ getData station = CE.catch (do
     ) errHandler
     where errHandler :: CE.SomeException -> IO String
           errHandler _ = return "<Could not retrieve data>"
+#else
+getData station = do
+    let request = getRequest (stationUrl station)
+    CE.catch (simpleHTTP request >>= getResponseBody) errHandler
+    where errHandler :: CE.IOException -> IO String
+          errHandler _ = return "<Could not retrieve data>"
+#endif
 
 formatWeather :: [WeatherInfo] -> Monitor String
 formatWeather [WI st ss y m d h (WindInfo wc wa wm wk) v sk tC tF dC dF r p] =
@@ -201,6 +212,7 @@ runWeather str =
        formatWeather i
 
 weatherReady :: [String] -> Monitor Bool
+#ifdef HTTP_CONDUIT
 weatherReady str = do
     initRequest <- parseUrl $ stationUrl $ head str
     let request = initRequest{method = methodHead}
@@ -214,3 +226,21 @@ weatherReady str = do
             | statusIsServerError status = False
             | statusIsClientError status = False
             | otherwise = True
+#else
+weatherReady str = do
+    let station = head str
+        request = headRequest (stationUrl station)
+    io $ CE.catch (simpleHTTP request >>= checkResult) errHandler
+    where errHandler :: CE.IOException -> IO Bool
+          errHandler _ = return False
+          checkResult result =
+            case result of
+                Left _ -> return False
+                Right response ->
+                    case rspCode response of
+                        -- Permission or network errors are failures; anything
+                        -- else is recoverable.
+                        (4, _, _) -> return False
+                        (5, _, _) -> return False
+                        (_, _, _) -> return True
+#endif
-- 
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