75 lines
2.1 KiB
Haskell
75 lines
2.1 KiB
Haskell
module SlackBuilder.Package
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( DownloadPlaceholder(..)
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, Download(..)
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, DownloadTemplate(..)
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, Package(..)
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, Maintainer(..)
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, Updater(..)
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, renderDownloadWithVersion
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) where
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import Data.List.NonEmpty (NonEmpty(..))
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import Data.Text (Text)
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import qualified Data.Text as Text
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import Text.URI (URI(..))
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import qualified Text.URI as URI
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import Crypto.Hash (Digest, MD5)
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import SlackBuilder.Trans
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import Control.Monad.Catch (MonadThrow)
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import Data.Map (Map)
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-- | Contains information how a package can be updated.
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data Package = Package
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{ latest :: Updater
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, downloaders :: Map Text Updater
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, category :: Text
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, name :: Text
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}
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-- | Download URI with the MD5 checksum of the target.
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data Download = Download
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{ download :: URI
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, md5sum :: Digest MD5
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, is64 :: Bool
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} deriving (Eq, Show)
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-- | Package maintainer information.
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data Maintainer = Maintainer
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{ name :: Text
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, email :: Text
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} deriving (Eq, Show)
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-- | Appears in the download URI template and specifies which part of the URI
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-- should be replaced with the package version.
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data DownloadPlaceholder
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= StaticPlaceholder Text
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| VersionPlaceholder
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deriving Eq
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instance Show DownloadPlaceholder
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where
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show (StaticPlaceholder staticPlaceholder) = Text.unpack staticPlaceholder
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show VersionPlaceholder = "{version}"
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-- | List of URI components, including version placeholders.
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newtype DownloadTemplate = DownloadTemplate (NonEmpty DownloadPlaceholder)
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deriving Eq
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instance Show DownloadTemplate
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where
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show (DownloadTemplate components) = concatMap show components
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-- | Replaces placeholders in the URL template with the given version.
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renderDownloadWithVersion :: MonadThrow m => DownloadTemplate -> Text -> m URI
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renderDownloadWithVersion (DownloadTemplate components) version =
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URI.mkURI $ foldr f "" components
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where
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f (StaticPlaceholder staticPlaceholder) = (staticPlaceholder <>)
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f VersionPlaceholder = (version <>)
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-- | Function used to get the latest version of a source.
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data Updater = Updater
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{ detectLatest :: SlackBuilderT (Maybe Text)
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, getVersion :: Text -> Text -> SlackBuilderT Download
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}
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