54 lines
1.7 KiB
Haskell
54 lines
1.7 KiB
Haskell
{-# LANGUAGE OverloadedStrings #-}
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module Backend.Http
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( HttpConfiguration (..),
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httpDefaultSettings,
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)
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where
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import Data.String
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import qualified Data.Text as T
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import Network.Wai.Handler.Warp as HTTP
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import Toml (TomlCodec, (.=))
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import Control.Concurrent
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import Control.Concurrent.MVar
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import qualified Toml
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import Validation
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-- We leave it as a Text here and defer the conversion to the warp type to the last possible moment.
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-- At least we can touch and print a String. Excepet that we don't use it so we don't need it in another
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-- form
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-- even though this is just a String alias, we leave the infrastructure in place. Maybe we want to change that
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-- type at some point. Then we can redifne the stuff to work with our new type.
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-- One can think about this as being accidantally a String, and not by design.
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type BindPreference = String
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_BindPreference :: Toml.TomlBiMap BindPreference Toml.AnyValue
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_BindPreference = Toml._String
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bindPreference :: Toml.Key -> TomlCodec BindPreference
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bindPreference = Toml.match _BindPreference
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data HttpConfiguration = HttpConfiguration
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{ port :: Int,
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bindPref :: BindPreference
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}
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httpDefaultSettings :: HttpConfiguration
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httpDefaultSettings = HttpConfiguration 80 "*"
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-- why a String? Why is the only way to generate a HostPreference by its IsString instance?
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-- why does warp not expose its constructors??
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httpConfigConstructor :: Int -> String -> HTTP.Settings
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httpConfigConstructor port bind = HTTP.setPort port $ HTTP.setHost (fromString bind) HTTP.defaultSettings
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httpConfigCodec :: TomlCodec HttpConfiguration
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httpConfigCodec =
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HttpConfiguration
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<$> Toml.int "Port" .= port
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<*> bindPreference "Bind" .= bindPref
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forkHttpBackend :: Toml.TOML -> IO [MVar ()]
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forkHttpBackend ast = undefined
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