From: Michael Orlitzky <michael@orlitzky.com>
Date: Mon, 20 Aug 2012 19:43:26 +0000 (-0400)
Subject: Switch from a FilePath to a CookieJar in the config.
X-Git-Tag: v0.0.1~7
X-Git-Url: https://gitweb.michael.orlitzky.com/?a=commitdiff_plain;h=00295eded52d532e145e52e832f2baf2cc447b05;p=dead%2Flwn-epub.git

Switch from a FilePath to a CookieJar in the config.
---

diff --git a/src/Configuration.hs b/src/Configuration.hs
index 118f10f..4d56043 100644
--- a/src/Configuration.hs
+++ b/src/Configuration.hs
@@ -2,15 +2,16 @@
 
 module Configuration (
   Cfg(..),
+  cj_empty,
   get_cfg,
   use_account
   )
 where
 
-import Control.Monad (mplus)
 import Data.ConfigFile
 import Data.Maybe (isJust)
 import Data.Monoid (Monoid(..))
+import Network.HTTP.Conduit (CookieJar, createCookieJar, destroyCookieJar)
 import System.Directory (
   doesFileExist,
   getAppUserDataDirectory
@@ -29,27 +30,42 @@ import ExitCodes
 -- | Contains all of our configurable options.
 data Cfg = Cfg {
   article      :: String,
-  cookie_jar   :: Maybe FilePath,
+  cookie_jar   :: CookieJar,
   full_stories :: Bool,
   output       :: FilePath,
   password     :: Maybe String,
   username     :: Maybe String }
 
+-- An empty CookieJar. See cj_append for rationale.
+cj_empty :: CookieJar
+cj_empty = createCookieJar []
+
+
+-- Defined for convenience; I would really like to use mappend but GHC
+-- bitches about the orphan instance.
+cj_append :: CookieJar -> CookieJar -> CookieJar
+cj_append cj1 cj2 =
+  createCookieJar (cookies1 ++ cookies2)
+  where
+    -- Decompose the cookie jars into lists.
+    cookies1 = destroyCookieJar cj1
+    cookies2 = destroyCookieJar cj2
+
 instance Monoid Cfg where
-  mempty = Cfg { article      = "",
-                 cookie_jar   = Nothing,
+  mempty = Cfg { article      = mempty,
+                 cookie_jar   = cj_empty,
                  full_stories = False,
-                 output       = "",
+                 output       = mempty,
                  password     = Nothing,
                  username     = Nothing }
 
   mappend c1 c2 =
     let article'      = (if null article1 then article2 else article1)
-        cookie_jar'   = cookie_jar1 `mplus` cookie_jar2
+        cookie_jar'   = cookie_jar1 `cj_append` cookie_jar2
         full_stories' = full_stories1 || full_stories2
         output'       = (if null output1 then output2 else output1)
-        password'     = password1 `mplus` password2
-        username'     = username1 `mplus` username2
+        password'     = password1 `mappend` password2
+        username'     = username1 `mappend` username2
     in
         Cfg { article      = article',
               cookie_jar   = cookie_jar',