Defer requesting secret key from gpg until just before backup

So the user knows why gpg is asking for this secret key to be backed up.
Before, this was done as soon as keysafe started, which didn't give the
user any indication what was going on, unless they had multiple keys and so
picked the key to back up from a list.

This commit was sponsored by Thomas Hochstein on Patreon.

1 files changed, 3 insertions, 6 deletions

diff --git a/SecretKey.hs b/SecretKey.hs
index 8dc2ada..15256d0 100644
--- a/SecretKey.hs
+++ b/SecretKey.hs
@@ -12,12 +12,9 @@ import qualified Data.ByteString as B
 import System.IO
 import System.Posix.IO
 
-getSecretKey :: SecretKeySource -> IO (SecretKeySource, SecretKey)
-getSecretKey sks = do
-	sk <- case sks of
-		GpgKey kid -> Gpg.getSecretKey kid
-		KeyFile f -> SecretKey <$> B.readFile f
-	return (sks, sk)
+getSecretKey :: SecretKeySource -> IO SecretKey
+getSecretKey (GpgKey kid) = Gpg.getSecretKey kid
+getSecretKey (KeyFile f) = SecretKey <$> B.readFile f
 
 -- | Can throw exception if the secret key already exists.
 writeSecretKey :: Distinguisher -> SecretKey -> IO ()