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Don't fail if the duplicate is the last element

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This commit is contained in:
Julian Ospald 2023-02-19 17:25:14 +08:00
parent f575dcdad6
commit 9c464ec9fc
Signed by: hasufell
GPG Key ID: 3786C5262ECB4A3F
1 changed files with 19 additions and 6 deletions
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25
app/ghcup/GHCup/OptParse/Config.hs
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@ -159,6 +159,9 @@ updateSettings usl usr =
--[ Entrypoint ]--
------------------
data Duplicate = Duplicate -- ^ there is a duplicate somewhere in the middle
| NoDuplicate -- ^ there is no duplicate
| DuplicateLast -- ^ there's a duplicate, but it's the last element
config :: forall m. ( Monad m
@ -207,16 +210,20 @@ config configCommand settings userConf keybindings runLogger = case configComman
r <- runE @'[DuplicateReleaseChannel] $ do
case urlSource settings of
AddSource xs -> do
when (not force && Right uri `elem` xs) $ throwE (DuplicateReleaseChannel uri)
lift $ doConfig (defaultUserSettings { uUrlSource = Just $ AddSource (appendUnique xs (Right uri)) })
pure ()
case checkDuplicate xs (Right uri) of
Duplicate
| not force -> throwE (DuplicateReleaseChannel uri)
DuplicateLast -> pure ()
_ -> lift $ doConfig (defaultUserSettings { uUrlSource = Just $ AddSource (appendUnique xs (Right uri)) })
GHCupURL -> do
lift $ doConfig (defaultUserSettings { uUrlSource = Just $ AddSource [Right uri] })
pure ()
OwnSource xs -> do
when (not force && Right uri `elem` xs) $ throwE (DuplicateReleaseChannel uri)
lift $ doConfig (defaultUserSettings { uUrlSource = Just $ OwnSource (appendUnique xs (Right uri)) })
pure ()
case checkDuplicate xs (Right uri) of
Duplicate
| not force -> throwE (DuplicateReleaseChannel uri)
DuplicateLast -> pure ()
_ -> lift $ doConfig (defaultUserSettings { uUrlSource = Just $ OwnSource (appendUnique xs (Right uri)) })
OwnSpec spec -> do
lift $ doConfig (defaultUserSettings { uUrlSource = Just $ OwnSource [Left spec, Right uri] })
pure ()
@ -228,6 +235,12 @@ config configCommand settings userConf keybindings runLogger = case configComman
pure $ ExitFailure 15
where
checkDuplicate :: Eq a => [a] -> a -> Duplicate
checkDuplicate xs a
| last xs == a = DuplicateLast
| a `elem` xs = Duplicate
| otherwise = NoDuplicate
-- appends the element to the end of the list, but also removes it from the existing list
appendUnique :: Eq a => [a] -> a -> [a]
appendUnique xs' e = go xs'