138 lines
3.8 KiB
Haskell
138 lines
3.8 KiB
Haskell
{-# LANGUAGE TransformListComp #-}
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module GalleryPage (make) where
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import Control.Exception
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import Data.Foldable
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import Data.Function (on, (&))
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import qualified Data.HashMap.Strict as HashMap
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import Data.HashSet (HashSet)
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import qualified Data.HashSet as HashSet
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import Data.List (intersperse, groupBy, sortOn)
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import qualified Data.Text.Lazy as Lazy
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import System.FilePath ((</>), takeDirectory, joinPath, splitPath)
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import GHC.Exts (Down (..), the)
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import BuilderQQ
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import Depend (thumbFile)
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import Info
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newtype NoThumb = NoThumb FilePath
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deriving stock Eq deriving anyclass Exception
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instance Show NoThumb where show (NoThumb dir) = "no thumbnail for " ++ dir
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make :: GalleryInfo -> [(FilePath, Info)] -> Lazy.Text
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make ginfo infos = toLazyText $ make' ginfo infos
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make' :: GalleryInfo -> [(FilePath, Info)] -> Builder
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make' (GalleryInfo {title, prefix, filters, hidden}) infos = [b|@0
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<!DOCTYPE html>
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<html lang=en>
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<meta charset=utf-8>
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<link rel=stylesheet href=/style/shiny/gallery.css>
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<link rel=icon href=/style/niss.svg>
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<link rel=alternate href=rss.xml type=application/rss+xml>
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<script src=/script/gallery.js></script>
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<title>$*title</title>
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<header>
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<h1>$*title</h1>
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<h2 class="right corner">
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<a href=rss.xml>rss</a>
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</h2>
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</header>
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<nav id=filters>
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<details id=filters-details>
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<summary><h2>filters</h2></summary>
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<div>
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<h3>show only</h3>
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<ul id=require class="buttonbar bb-choice">
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$8.requireFilters
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</ul>
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<h3>exclude</h3>
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<ul id=exclude class="buttonbar bb-choice">
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$8.excludeFilters
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</ul>
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<a href=# id=clear>clear</a>
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<a href=# id=reset>default</a>
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</div>
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</details>
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</nav>
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<main>
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<ul class=grid>
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$4.items
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</ul>
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</main>
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<footer>
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<a href=$@undir>all galleries</a>
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</footer>
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|]
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where
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items = map (uncurry $ makeYearItems nsfw) infosByYear
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infosByYear =
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[(the year, infopath) |
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infopath@(_, info) <- infos,
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then sortOn by Down info,
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let year = #year info,
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then group by Down year using groupBy']
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groupBy' f = groupBy ((==) `on` f)
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undir = joinPath (replicate (length (splitPath prefix)) "..")
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allTags = infos
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& concatMap (map (,1) . tagsFor nsfw . #second)
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& HashMap.fromListWith (+) & HashMap.toList
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& sortOn (\(tag, count) -> (Down count, tag))
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requireFilters = map (uncurry $ makeFilter "require" mempty) allTags
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excludeFilters = map (uncurry $ makeFilter "exclude" hidden) allTags
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nsfw = #nsfw filters /= NoNsfw
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makeFilter :: Text -> HashSet Text -> Text -> Int -> Builder
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makeFilter prefix initial tag _count = [b|@8
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<li>
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<input type=checkbox id="$id'" value="$*tag"$checked>
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<label for="$id'">$*tag</label>
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|]
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where
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id' = [b|$*prefix$&_$tag'|]
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tag' = escId tag
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checked = if HashSet.member tag initial then " checked" else ""
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makeYearItems :: Bool -- ^ nsfw
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-> Integer -- ^ year
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-> [(FilePath, Info)]
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-> Builder
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makeYearItems nsfw year infos = [b|@4
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<li class="item year-marker">
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<span class=year-text>$year'</span>
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$4.items
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|]
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where
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items = map (uncurry $ makeItem nsfw) infos
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year' = show year & foldMap \c -> [b|<span class=y>$'c</span>|]
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makeItem :: Bool -> FilePath -> Info -> Builder
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makeItem nsfw file info@(Info {title}) = [b|@4
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<li class="item post$nsfw'" data-tags="$tags'">
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<figure>
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<a href="$@dir">
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<img src="$@thumb">
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</a>
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<figcaption>$*title</figcaption>
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</figure>
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|]
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where
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dir = takeDirectory file
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thumb = maybe (throw $ NoThumb dir) (\t -> dir </> thumbFile t) $ #thumb info
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nsfw' = if nsfw && #anyNsfw info then " nsfw" else ""
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tags' = fold $ intersperse ";" $ map fromText $ tagsFor nsfw info
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