2020-07-19 11:55:54 -04:00
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{-# LANGUAGE TransformListComp #-}
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2020-07-16 10:07:28 -04:00
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module GalleryPage (make) where
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import Control.Exception
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2020-07-20 16:40:34 -04:00
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import Data.Function (on, (&))
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import Data.List (sortOn, groupBy)
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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 :: Text -- ^ title
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-> FilePath -- ^ gallery url prefix
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-> Bool -- ^ nsfw is included?
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-> [(FilePath, Info)]
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-> Lazy.Text
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make title prefix nsfw infos = toLazyText $ make' title prefix nsfw infos
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make' :: Text -> FilePath -> Bool -> [(FilePath, Info)] -> Builder
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make' title prefix nsfw 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 title=shiny>
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<link rel='alternate stylesheet' href=/style/tum/gallery.css title=tummy>
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<link rel=alternate href=rss.xml type=application/rss+xml>
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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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<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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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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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'">
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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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