47 lines
1.4 KiB
Haskell
47 lines
1.4 KiB
Haskell
{-# LANGUAGE TemplateHaskell #-}
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{-|
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Support files (static files and templates) used by the web app are
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embedded in this module at compile time. Since hamlet can not easily use
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these directly, we provide a way to write them out to the filesystem at
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startup, when needed. This simplifies installation for end-users, and
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customisation too.
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-}
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module Hledger.Web.EmbeddedFiles
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(
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files
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,createFilesIfMissing
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)
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where
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import Control.Monad
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import qualified Data.ByteString as B
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import Data.FileEmbed (embedDir)
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import System.Directory
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import System.FilePath
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import Hledger.Web.Settings (datadir)
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-- | An embedded copy of all files below the the hledger-web data
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-- directory (@.hledger\/web\/@) at compile time, as (FilePath,ByteString)
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-- pairs.
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files :: [(FilePath, B.ByteString)]
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files = $(embedDir datadir)
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-- | If the hledger-web data directory (@.hledger\/web\/@) does not exist in
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-- the current directory, create and fill it with the web app support
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-- files (templates, stylesheets, images etc.) Returns True if the
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-- directory was missing.
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createFilesIfMissing :: IO Bool
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createFilesIfMissing = do
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exists <- doesDirectoryExist datadir
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if exists
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then return False
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else do
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createDirectoryIfMissing True datadir
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setCurrentDirectory datadir
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forM_ files $ \(f,d) -> do
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createDirectoryIfMissing True $ takeDirectory f
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B.writeFile f d
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return True
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