gallery/make-pages/GalleryPage.hs

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2020-07-16 10:07:28 -04:00
module GalleryPage (make) where
import Control.Exception
import qualified Data.Text.Lazy as Lazy
import Data.Text.Lazy.Builder (Builder, toLazyText)
import System.FilePath ((</>), takeDirectory)
import BuilderQQ
import Depend (thumbFile)
import Info
newtype NoThumb = NoThumb FilePath
deriving stock Eq deriving anyclass Exception
instance Show NoThumb where show (NoThumb dir) = "no thumbnail for " ++ dir
make :: Text -> [(FilePath, Info)] -> Lazy.Text
make title infos = toLazyText $ make' title infos
make' :: Text -> [(FilePath, Info)] -> Builder
make' title infos = [b|
<!DOCTYPE html>
<html lang=en>
<meta charset=utf-8>
<title>$*title</title>
<header>
<h1>$*title</h1>
</header>
<main>
<ul class=grid>
$4.items
</ul>
</main>
|]
where
items = map (uncurry makeItem) infos
makeItem :: FilePath -> Info -> Builder
makeItem file info = [b|@4
<li class=item>
<figure>
<a href="$@dir">
<img src="$@thumb">
</a>
$title
</figure>
|]
where
dir = takeDirectory file
thumb = maybe (throw $ NoThumb dir) (\t -> dir </> thumbFile t) $ #thumb info
title = maybe mempty mkTitle $ #title info
mkTitle t = [b|@8
<figcaption>
$*t
</figcaption>
|]