363 lines
9.7 KiB
Haskell
363 lines
9.7 KiB
Haskell
{-# LANGUAGE PatternSynonyms #-}
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module SinglePage (make) where
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import Date
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import Info
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import BuilderQQ
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import qualified NsfwWarning
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import Control.Exception
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import Control.Monad
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import Data.List (sort, intersperse)
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import Data.Maybe (fromMaybe, isNothing, isJust)
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import qualified Data.Text as Strict
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import qualified Data.Text.Lazy as Lazy
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import System.FilePath (joinPath, splitPath)
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import qualified Data.HashSet as Set
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import Data.Traversable
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import Data.Semigroup
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import Data.List.NonEmpty (toList)
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-- | e.g. only nsfw images are present for a non-nsfw page
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newtype NoEligibleImages = NoEligibleImages {title :: Strict.Text}
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deriving stock Eq deriving anyclass Exception
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instance Show NoEligibleImages where
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show (NoEligibleImages {title}) =
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Strict.unpack title <> ": no images selected\n" <>
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" (probably a nsfw-only work without --nsfw set)"
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make :: Text -- ^ website root
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-> Text -- ^ website name
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-> FilePath -- ^ gallery prefix
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-> Bool -- ^ nsfw?
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-> FilePath -- ^ data dir
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-> FilePath -- ^ subdir of datadir containing this @info.yaml@
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-> Info -> IO Lazy.Text
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make root siteName prefix nsfw dataDir dir info =
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toLazyText <$> make' root siteName prefix nsfw dataDir dir info
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make' :: Text -> Text -> FilePath -> Bool -> FilePath -> FilePath -> Info
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-> IO Builder
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make' root siteName prefix nsfw _dataDir dir
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info@(Info {date, title, artist, bg}) = do
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images <- maybe (throw $ NoEligibleImages title) pure $ imagesFor nsfw info
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let undir = joinPath (replicate (length (splitPath dir)) "..")
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let formattedDate = formatLong date
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let buttonBar = makeButtonBar title $ addIds images
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let image0 :| otherImages = allImages images
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let download0 = fromMaybe (bigFile image0) image0.download
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let path0' = pageFile image0
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let artistSection = makeArtist artist
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let descSection = makeDesc $ descFor nsfw info
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let tagsList = makeTags undir $ tagsFor nsfw info
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let linksList = extLinks $ linksFor nsfw info
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let updates = sort $ updatesFor nsfw info
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let updatesList = makeUpdates updates
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let makePrefetch img = [b|<link rel=prefetch as=image href=$path'>|]
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where path' = bigFile img
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let prefetches = map makePrefetch otherImages
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let makeWarning w = [b|@0
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<figcaption id=cw aria-role=button tabindex=0>
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<span id=cw-text>$w</span>
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</figcaption>
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|]
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let warning' = ifJust image0.warning makeWarning
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let warningT = makeWarning [b|.|]
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let bgStyle = case bg of
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Default -> ""
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NoBorder -> [b|@0
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<style>
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#mainfig {
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background: transparent;
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border: none;
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box-shadow: none;
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}
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</style>
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|]
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Other col -> [b|@0
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<style> #mainfig { background: $col; } </style>
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|]
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let url = [b|$root/$prefix/$dir|]
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let desc = case artist of
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Just (Artist {name}) -> [b|by $name|]
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Nothing -> "by niss"
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let thumbnail = getThumb "" info
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let updateDate = ifJust (last' updates) \(d, _) ->
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let updated = formatLong d in
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[b|<br> <span class=updated>updated $updated</span>|]
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let nsfw' = NsfwWarning.Single <$ guard nsfw
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let nsfwScript = NsfwWarning.script nsfw'
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let nsfwDialog = NsfwWarning.dialog nsfw'
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let imageMeta =
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if image0.sfw && isNothing image0.warning then [b|@0
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<meta property=og:image content="$url/$path0'">
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<meta name=twitter:card content=summary_large_image>
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<meta name=twitter:image content="$url/$path0'">
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|] else [b|@0
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<meta property=og:image content="$url/$thumbnail">
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<meta name=twitter:card content=summary>
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|]
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pure [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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<meta name=viewport content="width=1200,viewport-fit=cover">
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<link rel=stylesheet href=/style/shiny/single.css>
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<link rel=icon href=/style/niss.svg>
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<meta property=og:type content=article>
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<meta property=og:title content="$title">
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<meta property=og:site_name content="$siteName">
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<meta property=og:description content="$desc">
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<meta property=og:url content="$url">
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$imageMeta
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<meta name=robots content='noai,noimageai'>
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<script src=/script/single.js type=module></script>
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$nsfwScript
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$bgStyle
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$0.prefetches
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<title>$title</title>
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$nsfwDialog
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<div class=page>
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<header>
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<h1>$title</h1>
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<h2 id=date class="right corner">
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$formattedDate $updateDate
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</h2>
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<h2 class="left corner">
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<a href=$undir>back to gallery</a>
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</h2>
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</header>
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$2.buttonBar
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<main>
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<figure id=mainfig>
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$warning'
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<a id=mainlink href="$download0" title="download full version">
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<img id=mainimg src="$path0'" alt="">
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</a>
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</figure>
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<div id=info>
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$6.artistSection
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$6.descSection
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$6.updatesList
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$6.linksList
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$6.tagsList
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</div>
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</main>
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</div>
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<template id=cw-template>
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$warningT
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</template>
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|]
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last' :: [a] -> Maybe a
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last' xs = if null xs then Nothing else Just $ last xs
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makeArtist :: Maybe Artist -> Builder
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makeArtist Nothing = ""
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makeArtist (Just (Artist {name, url})) = [b|@0
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<section id=desc class=info-section>
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<h2>by</h2>
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<div>$artistLink</div>
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</section>
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|]
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where
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artistLink = case url of
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Just u -> [b|<a href="$u">$name</a>|]
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Nothing -> [b|$name|]
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makeDesc :: Desc -> Builder
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makeDesc NoDesc = ""
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makeDesc (TextDesc desc) = [b|@0
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<section id=desc class=info-section>
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<h2>about</h2>
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<div>
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$4.desc
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</div>
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</section>
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|]
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makeDesc (LongDesc fs) = [b|@0
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<section id=desc class=info-section>
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$2.fields
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</section>
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|]
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where
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fields = map makeField fs
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makeField (DescField {name, text}) = [b|@0
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<h2>$name</h2>
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<div>
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$4.text
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</div>
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|]
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data Inf a = a :> Inf a deriving Functor
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headI :: Inf a -> a
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headI (x :> _) = x
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suffixes :: Inf String
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suffixes = "" :> go 0 where
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go :: Int -> Inf String
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go i = show i :> go (i + 1)
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filterI :: (a -> Bool) -> Inf a -> Inf a
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filterI p (x :> xs) = if p x then x :> filterI p xs else filterI p xs
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addIds :: Traversable t => t Image -> t (Image, Text)
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addIds = snd . mapAccumL makeId Set.empty where
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makeId used img = (Set.insert newId used, (img, newId)) where
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newId = headI $ filterI (\i -> not $ i `Set.member` used) ids
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ids = fmap (\i -> toStrictText [b|$label$i|]) suffixes
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label = escId $ img.label
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pattern One :: a -> NonEmpty a
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pattern One x = x :| []
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makeButtonBar :: Strict.Text -> Images' (Image, Text) -> Builder
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makeButtonBar title images =
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case images of
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Uncat (One _) -> ""
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Cat (One (_, One _)) -> ""
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Uncat imgs -> makeNav "uncat" $ makeAlts imgs
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Cat cats
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| all ((== 1) . length . snd) cats ->
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makeButtonBar title $ Uncat $ flatten cats
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| [(_, imgs)] <- cats ->
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makeButtonBar title (Uncat imgs)
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| otherwise ->
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makeNav "cat" $ fmap (uncurry makeCat) cats
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where
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makeNav :: CanBuild b => Text -> b -> Builder
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makeNav cls inner = [b|@0
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<nav id=alts class=$cls aria-label="alternate versions">
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$2.inner
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$2.skipAll
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</nav> |]
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makeCat lbl imgs = [b|@0
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<section>
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<h3 class=alt-cat>$lbl</h3>
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$0.alts
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</section> |]
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where alts = makeAlts imgs
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makeAlts imgs = [b|@0
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<ul class="buttonbar bb-choice">
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$2.elems
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</ul> |]
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where elems = fmap (uncurry altButton) imgs
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skipAll =
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if any (isJust . (.warning) . fst) images then
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[b|@0
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<div class=buttonbar id=skipAllDiv>
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<input type=checkbox name=skipAll id=skipAll>
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<label for=skipAll>skip warnings</label>
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</div>
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|]
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else ""
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flatten :: NonEmpty (Text, NonEmpty (Image, a)) -> NonEmpty (Image, Text)
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flatten =
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addIds . sconcat .
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fmap (\(t, is) -> fmap (\(i, _) -> i {label = t}) is)
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altButton :: Image -> Text -> Builder
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altButton img i = [b|@0
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<li$nsfwClass>
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<input type=radio name=variant id="$i" value="$path'"
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data-link="$link"$warning'>
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<label for="$i"$nsfwLabelClass>$label</label>
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|]
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where
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Image {label, nsfw, warning, download} = img
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nsfwClass = if nsfw then [b| class=nsfw|] else ""
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nsfwLabelClass = if nsfw then [b| class=nsfw-label|] else ""
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path' = pageFile img
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link = fromMaybe (bigFile img) download
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warning' = ifJust warning \(escAttr -> w) -> [b| data-warning="$w"|]
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makeTags :: FilePath -> [Strict.Text] -> Builder
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makeTags undir tags =
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if null tags then "" else [b|@0
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<nav id=tags class=info-section>
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<h2>tags</h2>
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<ul>
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$4.tagList
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</ul>
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</nav>
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|]
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where
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tagList = map makeTag tags
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makeTag tag = [b|<li><a href="$undir#require_$tag'">$tag</a>|]
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where tag' = escId tag
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extLinks :: [Link] -> Builder
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extLinks links =
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if null links then "" else [b|@0
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<nav id=links class=info-section>
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<h2>links</h2>
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<ul>
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$4.linkList
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</ul>
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</nav>
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|]
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where linkList = map extLink links
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extLink :: Link -> Builder
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extLink (Link {title, url}) = [b|@8
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<li>
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<a href="$url">
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$title
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</a>
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|]
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makeUpdates :: [(Date, NonEmpty Update)] -> Builder
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makeUpdates ups =
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if all (null . snd) ups then "" else [b|@4
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<section id=updates class=info-section>
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<h2>updates</h2>
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<dl>
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$8.updateList
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</dl>
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</section>
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|]
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where updateList = fmap (uncurry makeUpdate) ups
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makeUpdate :: Date -> NonEmpty Update -> Builder
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makeUpdate date ups = [b|@8
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<dt>$date'
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<dd>$desc
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|] where
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date' = formatSlash date
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desc = mconcat $ map fromText $ intersperse "; " $ toList $ fmap (.desc) ups
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