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https://github.com/commercialhaskell/stackage-server.git
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f03ada0f81
I also cleaned up the LTS code. It currently had the assumption that LTS major versions would be monotonically increasing from 0 without gaps. While likely to be true, that's slightly brittle, and did in fact break in my testing (where I only had an lts-2.4 in the database).
94 lines
2.9 KiB
Haskell
94 lines
2.9 KiB
Haskell
module Handler.Download
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( getDownloadR
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, getDownloadLtsSnapshotsJsonR
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, getGhcMajorVersionR
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, getDownloadGhcLinksR
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) where
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import Import
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import Data.Slug (SnapSlug)
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import Data.GhcLinks
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import Yesod.GitRepo (grContent)
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executableFor :: SupportedArch -> StackageExecutable
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executableFor Win32 = StackageWindowsExecutable
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executableFor Win64 = StackageWindowsExecutable
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executableFor _ = StackageUnixExecutable
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-- TODO: link to s3
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executableLink :: SupportedArch -> StackageExecutable -> Text
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executableLink arch exe =
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"https://s3.amazonaws.com/download.fpcomplete.com/stackage-cli/"
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<> toPathPiece arch <> "/" <> toPathPiece exe
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downloadCandidates :: [(SupportedArch, StackageExecutable)]
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downloadCandidates =
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map (\arch -> (arch, executableFor arch))
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[minBound .. maxBound]
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currentlySupported :: SupportedArch -> Bool
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currentlySupported Linux64 = True
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currentlySupported _ = False
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getDownloadR :: Handler Html
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getDownloadR = defaultLayout $ do
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setTitle "Download"
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$(widgetFile "download")
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ltsMajorVersions :: YesodDB App [Lts]
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ltsMajorVersions =
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(dropOldMinors . map entityVal)
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<$> selectList [] [Desc LtsMajor, Desc LtsMinor]
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dropOldMinors :: [Lts] -> [Lts]
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dropOldMinors [] = []
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dropOldMinors (l@(Lts x _ _):rest) =
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l : dropOldMinors (dropWhile sameMinor rest)
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where
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sameMinor (Lts y _ _) = x == y
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getDownloadLtsSnapshotsJsonR :: Handler Value
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getDownloadLtsSnapshotsJsonR = do
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(mlatestNightly, ltses) <- runDB $ (,)
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<$> getLatestNightly
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<*> ltsMajorVersions
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let lts = case ltses of
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[] -> []
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majorVersions@(latest:_) ->
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("lts" .= printLts latest)
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: map toObj majorVersions
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nightly = case mlatestNightly of
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Nothing -> id
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Just n -> (("nightly" .= printNightly n):)
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return $ object $ nightly lts
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where
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toObj lts@(Lts major _ _) =
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pack ("lts-" ++ show major) .= printLts lts
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printLts (Lts major minor _) =
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"lts-" ++ show major ++ "." ++ show minor
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printNightly (Entity _ (Nightly day _ _)) =
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"nightly-" ++ tshow day
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getLatestNightly = selectFirst [] [Desc NightlyDay]
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-- TODO: add this to db
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ltsGhcMajorVersion :: Stackage -> Text
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ltsGhcMajorVersion _ = "7.8"
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getGhcMajorVersionR :: SnapSlug -> Handler Text
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getGhcMajorVersionR slug = do
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snapshot <- runDB $ getBy404 $ UniqueSnapshot slug
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return $ ltsGhcMajorVersion $ entityVal snapshot
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getDownloadGhcLinksR :: SupportedArch -> Text -> Handler TypedContent
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getDownloadGhcLinksR arch fileName = do
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ver <- maybe notFound return
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$ stripPrefix "ghc-" >=> stripSuffix "-links.yaml"
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$ fileName
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ghcLinks <- getYesod >>= fmap wcGhcLinks . liftIO . grContent . websiteContent
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case lookup (arch, ver) (ghcLinksMap ghcLinks) of
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Just text -> return $ TypedContent yamlMimeType $ toContent text
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Nothing -> notFound
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where
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yamlMimeType = "text/yaml"
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