321 lines
9.1 KiB
Haskell
321 lines
9.1 KiB
Haskell
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 Records ()
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import qualified NsfwWarning
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import Control.Exception
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import Data.List (sort)
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import Data.Maybe (fromMaybe)
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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 System.Process as Proc
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import Text.Read (readMaybe)
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import qualified Data.HashSet as Set
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import Data.Traversable
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-- | e.g. only nsfw images are present for a non-nsfw page
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data 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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-> 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 prefix nsfw dataDir dir info =
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toLazyText <$> make' root prefix nsfw dataDir dir info
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make' :: Text -> FilePath -> Bool -> FilePath -> FilePath -> Info -> IO Builder
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make' root prefix nsfw dataDir dir info@(Info {date, title, artist, bg}) = do
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images <- withSizes (dataDir </> dir) $ imagesFor nsfw info
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let undir = joinPath (replicate (length (splitPath dir)) "..")
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let artistTag = ifJust artist makeArtist
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let formattedDate = formatLong date
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let buttonBar = makeButtonBar title $ addIds images
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let (image0@(Image {path = path0, download = download0'}),
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Size {width = width0, height = height0}) : otherImages
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= #all images
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let download0 = fromMaybe path0 download0'
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let path0' = pageFile path0
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let tinyCls = if any (tiny . #second) images then [b| class=tiny|] else ""
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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 (Image {path}) = [b|<link rel=prefetch href=$path>|]
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let prefetches = map (makePrefetch . #first) otherImages
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let makeWarning w = [b|@0
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<figcaption id=cw aria-role=button tabindex=0>
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<span id=cw-text>$w</span>
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</figcaption>
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|]
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let defWarning = "oops i forgot to put one, sorry!<br>\
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\if you can let me know i'd appreciate it" :: Text
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let warning'
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| Just w <- #warning image0 = makeWarning w
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| #nsfw image0 = makeWarning defWarning
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| otherwise = mempty
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let warningT = makeWarning [b|.|]
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let bgStyle = ifJust bg \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 thumb = getThumb "" info
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let updateDate = ifJust (last' updates) \(Update {date = d}) ->
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let updated = formatLong d in
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[b|<br> <span class=updated>updated $updated</span>|]
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let nsfwScript = NsfwWarning.script nsfw
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let nsfwDialog = NsfwWarning.dialog nsfw
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pure [b|@0
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<!DOCTYPE html>
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<html lang=en>
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<meta charset=utf-8>
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<meta name=viewport content="width=1200,viewport-fit=cover">
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<link rel=stylesheet href=/style/shiny/single.css>
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<link rel=icon href=/style/niss.svg>
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<meta property=og:type content=og:website>
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<meta property=og:title content="$title">
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<meta property=og:site_name content="$title">
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<meta property=og:description content="$desc">
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<meta property=og:image content="$url/$thumb">
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<meta property=og:url content="$url">
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<meta name=twitter:site content=@2_gecs>
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<meta name=twitter:card content=summary>
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<script src=/script/single.js></script>
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$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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$artistTag
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<h2 id=date class="right corner">
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$formattedDate $updateDate
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</h2>
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</header>
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$2.buttonBar
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<main>
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<figure id=mainfig data-width=$width0 data-height=$height0$tinyCls>
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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.descSection
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$6.tagsList
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$6.linksList
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$6.updatesList
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</div>
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</main>
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<footer>
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<a href=$undir>back to gallery</a>
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</footer>
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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 :: Artist -> Builder
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makeArtist (Artist {name, url}) =
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[b|<h2 id=artist class="left corner">by $artistLink</h2>|]
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where
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artistLink = case url of
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Just u -> [b|<a href="$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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addIds :: Images' (Image, a) -> Images' (Image, a, Text)
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addIds = snd . mapAccumL makeId Set.empty where
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makeId used (img, x) = (Set.insert newId used, (img, x, newId)) where
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newId = head $ filter (\i -> not $ i `Set.member` used) ids
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ids = [toStrictText [b|$label$i|] | i <- "" : map show [0::Int ..]]
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label = escId $ #label img
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makeButtonBar :: Strict.Text -> Images' (Image, Size, Text) -> Builder
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makeButtonBar title images =
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case images of
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Uncat [] -> throw $ NoEligibleImages title
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Uncat [_] -> ""
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Cat [(_,[_])] -> ""
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Uncat imgs -> makeNav "uncat" $ makeAlts imgs
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Cat cats -> makeNav "cat" $ map (uncurry makeCat) cats
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where
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makeNav (cls :: Text) inner = [b|@0
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<nav id=alts class=$cls aria-label="alternate versions">
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$2.inner
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</nav> |]
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makeCat lbl imgs = [b|@0
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<section>
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<h3 class=alt-cat>$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 = map (\(img,sz,i) -> altButton img sz i) imgs
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altButton :: Image -> Size -> Text -> Builder
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altButton img size 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"$warning'
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data-width=$width data-height=$height>
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<label for="$i"$nsfwLabelClass>$label</label>
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|]
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where
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Image {label, path, nsfw, warning, download} = img
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Size {width, height} = size
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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 path
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link = fromMaybe path 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 class="buttonbar bb-links">
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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 class="buttonbar bb-links">
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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 :: [Update] -> Builder
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makeUpdates ups =
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if null 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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$8.updateList
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</dl>
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</section>
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|]
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where updateList = map makeUpdate ups
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makeUpdate :: Update -> Builder
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makeUpdate (Update {date, desc}) = [b|@8
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<dt>$date'
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<dd>$desc
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|]
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where date' = formatSlash date
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data Size = Size {width, height :: !Int} deriving (Eq, Show)
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tiny :: Size -> Bool
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tiny (Size {width, height}) = width < 250 || height < 250
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imageSize :: FilePath -> FilePath -> IO Size
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imageSize dir img = do
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-- "[0]" to get the first frame of an animation
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-- otherwise it prints a pair for each frame
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let filename = (dir </> img) ++ "[0]"
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output <- Proc.readProcess "identify" ["-format", "(%W,%H)", filename] ""
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case readMaybe output of
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Just (width, height) -> pure $ Size {width, height}
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Nothing -> fail $ "couldn't understand identify output:\n" ++ output
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withSizes :: Traversable t => FilePath -> t Image -> IO (t (Image, Size))
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withSizes dir = traverse \img -> do
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size <- imageSize dir $ #path img
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pure (img, size)
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