refactor: create types and const modules

app/Const.hs

@@ -0,0 +1,13 @@
+module Const where
+
+query :: String
+query = "http://ip-api.com/line/?fields=status,lat,lon,timezone"
+
+prog :: String
+prog = "suntheme"
+
+lightModeScript :: String
+lightModeScript = "light.sh"
+
+darkModeScript :: String
+darkModeScript = "dark.sh"

app/Main.hs

@@ -5,6 +5,9 @@
 
 module Main where
 
+import Const (darkModeScript, lightModeScript, prog, query)
+import Types (ResponseMsg(..), ResponseCode(..), Status(..), genericErr, toResponseMsg)
+
 import Data.Time (ZonedTime, getCurrentTime)
 import Data.Time.Solar (Location(Location), sunrise, sunset)
 import Data.Time.RFC3339 (formatTimeRFC3339)
@@ -25,47 +28,6 @@ import Network.HTTP.Request (Response(responseBody, responseStatus), get)
 -- introduce liquid types and checking
 -- whitepaper!
 
-class Status s where
-    ok :: s -> Bool
-    ok = const False
-
-    disp :: s -> String
-    disp = const "encountered bad response (expected OK)"
-
-newtype ResponseCode = ResponseCode Int
-instance Status ResponseCode where
-    ok (ResponseCode code) = code == 200
-    disp (ResponseCode code) =
-        "encountered bad response code: "
-        ++ show code
-        ++ " (expected 200 'OK')"
-
-newtype ResponseMsg = ResponseMsg String
-instance Status ResponseMsg where
-    ok (ResponseMsg msg) = msg == "success"
-    disp (ResponseMsg msg) =
-        "encountered bad response message: "
-        ++ msg
-        ++ " (expected 'success')"
-
-toResponseMsg :: SomeException -> ResponseMsg
-toResponseMsg = ResponseMsg . show
-
-query :: String
-query = "http://ip-api.com/line/?fields=status,lat,lon,timezone"
-
-genericErr :: ResponseMsg
-genericErr = ResponseMsg "encountered unknown error"
-
-prog :: String
-prog = "suntheme"
-
-lightModeScript :: String
-lightModeScript = "light.sh"
-
-darkModeScript :: String
-darkModeScript = "dark.sh"
-
 now :: IO ZonedTime
 now = do
     utcTime <- getCurrentTime

app/Types.hs

@@ -0,0 +1,32 @@
+module Types where
+
+import Control.Exception (SomeException)
+
+class Status s where
+    ok :: s -> Bool
+    ok = const False
+
+    disp :: s -> String
+    disp = const "encountered bad response (expected OK)"
+
+newtype ResponseCode = ResponseCode Int
+instance Status ResponseCode where
+    ok (ResponseCode code) = code == 200
+    disp (ResponseCode code) =
+        "encountered bad response code: "
+        ++ show code
+        ++ " (expected 200 'OK')"
+
+newtype ResponseMsg = ResponseMsg String
+instance Status ResponseMsg where
+    ok (ResponseMsg msg) = msg == "success"
+    disp (ResponseMsg msg) =
+        "encountered bad response message: "
+        ++ msg
+        ++ " (expected 'success')"
+
+toResponseMsg :: SomeException -> ResponseMsg
+toResponseMsg = ResponseMsg . show
+
+genericErr :: ResponseMsg
+genericErr = ResponseMsg "encountered unknown error"

suntheme.cabal

@@ -62,22 +62,22 @@ executable suntheme
     main-is:          Main.hs
 
     -- Modules included in this executable, other than Main.
-    -- other-modules:
+    other-modules:    Types, Const
 
     -- LANGUAGE extensions used by modules in this package.
     -- other-extensions:
 
     -- Other library packages from which modules are imported.
     build-depends:    base ^>=4.17.2.1,
-        request ^>=0.2.2.0, 
-        process ^>=1.6.18.0,
-        bytestring ^>=0.11.5.3,
-        filepath ^>=1.4.2.2,
-        time ^>=1.9.3,
-        solar ^>=0.1.0.0,
-        timerep ^>=2.1.0.0,
-        extra ^>=1.7.16,
-        directory ^>=1.3.8.5
+                      request ^>=0.2.2.0, 
+                      process ^>=1.6.18.0,
+                      bytestring ^>=0.11.5.3,
+                      filepath ^>=1.4.2.2,
+                      time ^>=1.9.3,
+                      solar ^>=0.1.0.0,
+                      timerep ^>=2.1.0.0,
+                      extra ^>=1.7.16,
+                      directory ^>=1.3.8.5
 
     -- Directories containing source files.
     hs-source-dirs:   app