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{-# LANGUAGE OverloadedStrings #-}
module Config (
Config(..),
getConfig,
makeOpenSearch
) where
import Data.Maybe (fromMaybe)
import Data.String (fromString)
import Data.Text (Text)
import Network.Wai.Handler.Warp (HostPreference)
import System.Environment (lookupEnv)
data Config = Config {
confPort :: Int,
confHost :: HostPreference,
confBaseUrl :: Text,
confFavicon :: Text
} deriving (Show, Eq)
getConfig :: IO Config
getConfig = do
port <- (read . fromMaybe "20546") <$> lookupEnv "PORT"
host <- (fromString . fromMaybe "*6") <$> lookupEnv "BIND_ADDR"
baseUrl <- (fromString . fromMaybe "http://localhost:20546") <$> lookupEnv "BASE_URL"
favicon <- (fromString . fromMaybe "https://69owo.de/favicon.ico") <$> lookupEnv "FAVICON_URL"
return $ Config port host baseUrl favicon
makeOpenSearch :: Config -> Maybe Text -> Text
makeOpenSearch cfg defBang =
"<OpenSearchDescription xmlns=\"http://a9.com/-/spec/opensearch/1.1/\"\n"
<> " xmlns:moz=\"http://www.mozilla.org/2006/browser/search/\">\n"
<> " <ShortName>" <> name <> "</ShortName>\n"
<> " <Description>Handles search bangs (mostly) locally.</Description>\n"
<> " <InputEncoding>UTF-8</InputEncoding>\n"
<> " <Image width=\"16\" height=\"16\" type=\"image/x-icon\">" <> confFavicon cfg <> "</Image>\n"
<> " <Url type=\"text/html\" template=\"" <> searchUrl <> "\"/>\n"
<> "</OpenSearchDescription>\n"
where (searchUrl, name) = case defBang of
Nothing -> (confBaseUrl cfg <> "/#{searchTerms}", "FastBangs")
Just b -> (confBaseUrl cfg <> "/#" <> b <> "#{searchTerms}", "FastBangs (" <> b <> ")")
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