gallery/make-pages/SinglePage.hs

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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 Records ()
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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)
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import Data.Maybe (fromMaybe)
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import qualified Data.Text as Strict
import qualified Data.Text.Lazy as Lazy
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import System.FilePath (joinPath, splitPath, (</>))
import qualified System.Process as Proc
import Text.Read (readMaybe)
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import qualified Data.HashSet as Set
import Data.Traversable
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-- | e.g. only nsfw images are present for a non-nsfw page
data NoEligibleImages = NoEligibleImages {title :: !Strict.Text}
deriving stock Eq deriving anyclass Exception
instance Show NoEligibleImages where
show (NoEligibleImages {title}) =
Strict.unpack title <> ": no images selected\n" <>
" (probably a nsfw-only work without --nsfw set)"
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make :: Text -- ^ website root
-> FilePath -- ^ gallery prefix
-> Bool -- ^ nsfw?
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-> FilePath -- ^ data dir
-> FilePath -- ^ subdir of datadir containing this @info.yaml@
-> Info -> IO Lazy.Text
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make root prefix nsfw dataDir dir info =
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
let undir = joinPath (replicate (length (splitPath dir)) "..")
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
= #all images
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let download0 = fromMaybe path0 download0'
let path0' = pageFile path0
let tinyCls = if any (tiny . #second) images then [b| class=tiny|] else ""
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let descSection = makeDesc $ descFor nsfw info
let tagsList = makeTags undir $ tagsFor nsfw info
let linksList = extLinks $ linksFor nsfw info
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let updates = sort $ updatesFor nsfw info
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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let defWarning = "oops i forgot to put one, sorry!<br>\
\if you can let me know i'd appreciate it" :: Text
let warning'
| Just w <- #warning image0 = makeWarning w
| #nsfw image0 = makeWarning defWarning
| otherwise = mempty
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let warningT = makeWarning [b|.|]
let bgStyle = ifJust bg \col -> [b|@0
<style> #mainfig { background: $col; } </style>
|]
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let url = [b|$root/$prefix/$dir|]
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let desc = case artist of
Just (Artist {name}) -> [b|by $name|]
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Nothing -> "by niss"
let thumb = getThumb "" info
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let updateDate = ifJust (last' updates) \(Update {date = d}) ->
let updated = formatLong d in
[b|<br> <span class=updated>updated $updated</span>|]
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let nsfw' = NsfwWarning.Single <$ guard nsfw
let nsfwScript = NsfwWarning.script nsfw'
let nsfwDialog = NsfwWarning.dialog nsfw'
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pure [b|@0
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<!DOCTYPE html>
<html lang=en>
<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>
<meta property=og:title content="$title">
<meta property=og:site_name content="$title">
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<meta property=og:description content="$desc">
<meta property=og:image content="$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
$bgStyle
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$0.prefetches
<title>$title</title>
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$nsfwDialog
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<div class=page>
<header>
<h1>$title</h1>
$artistTag
<h2 id=date class="right corner">
$formattedDate $updateDate
</h2>
</header>
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$2.buttonBar
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<main>
<figure id=mainfig data-width=$width0 data-height=$height0$tinyCls>
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$warning'
<a id=mainlink href="$download0" title="download full version">
<img id=mainimg src="$path0'" alt="">
</a>
</figure>
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<div id=info>
$6.descSection
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$6.tagsList
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$6.linksList
$6.updatesList
</div>
</main>
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<footer>
<a href=$undir>back to gallery</a>
</footer>
</div>
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<template id=cw-template>
$warningT
</template>
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|]
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last' :: [a] -> Maybe a
last' xs = if null xs then Nothing else Just $ last xs
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makeArtist :: Artist -> Builder
makeArtist (Artist {name, url}) =
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[b|<h2 id=artist class="left corner">by $artistLink</h2>|]
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where
artistLink = case url of
Just u -> [b|<a href="$u">$name</a>|]
Nothing -> [b|$name|]
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makeDesc :: Desc -> Builder
makeDesc NoDesc = ""
makeDesc (TextDesc desc) = [b|@0
<section id=desc class=info-section>
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<h2>about</h2>
<div>
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$4.desc
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</div>
</section>
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|]
makeDesc (LongDesc fs) = [b|@0
<section id=desc class=info-section>
$2.fields
</section>
|]
where
fields = map makeField fs
makeField (DescField {name, text}) = [b|@0
<h2>$name</h2>
<div>
$4.text
</div>
|]
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addIds :: Images' (Image, a) -> Images' (Image, a, Text)
addIds = snd . mapAccumL makeId Set.empty where
makeId used (img, x) = (Set.insert newId used, (img, x, newId)) where
newId = head $ filter (\i -> not $ i `Set.member` used) ids
ids = [toStrictText [b|$label$i|] | i <- "" : map show [0::Int ..]]
label = escId $ #label img
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
Uncat [_] -> ""
Cat [(_,[_])] -> ""
Uncat imgs -> makeNav "uncat" $ makeAlts imgs
Cat cats -> makeNav "cat" $ map (uncurry makeCat) cats
where
makeNav (cls :: Text) inner = [b|@0
<nav id=alts class=$cls aria-label="alternate versions">
$2.inner
</nav> |]
makeCat lbl imgs = [b|@0
<section>
<h3 class=alt-cat>$lbl</h3>
$0.alts
</section> |]
where alts = makeAlts imgs
makeAlts imgs = [b|@0
<ul class="buttonbar bb-choice">
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$2.elems
</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
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"$warning'
data-width=$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
Size {width, height} = size
nsfwClass = if nsfw then [b| class=nsfw|] else ""
nsfwLabelClass = if nsfw then [b| class=nsfw-label|] else ""
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
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>
<ul class="buttonbar bb-links">
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$4.tagList
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</ul>
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</nav>
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|]
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where
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tagList = map makeTag tags
makeTag tag = [b|<li><a href="$undir#require_$tag'">$tag</a>|]
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where tag' = escId tag
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extLinks :: [Link] -> Builder
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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$4.linkList
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</ul>
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</nav>
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|]
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where linkList = map extLink links
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extLink :: Link -> Builder
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extLink (Link {title, url}) = [b|@8
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<li>
<a href="$url">
$title
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</a>
|]
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makeUpdates :: [Update] -> Builder
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makeUpdates ups =
if null ups then "" else [b|@4
<section id=updates class=info-section>
<h2>updates</h2>
<dl>
$8.updateList
</dl>
</section>
|]
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where updateList = map makeUpdate ups
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makeUpdate :: Update -> Builder
makeUpdate (Update {date, desc}) = [b|@8
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<dt>$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
tiny (Size {width, height}) = width < 250 || height < 250
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imageSize :: FilePath -> FilePath -> IO Size
imageSize dir img = do
-- "[0]" to get the first frame of an animation
-- otherwise it prints a pair for each frame
let filename = (dir </> img) ++ "[0]"
output <- Proc.readProcess "identify" ["-format", "(%W,%H)", filename] ""
case readMaybe output of
Just (width, height) -> pure $ Size {width, height}
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
size <- imageSize dir $ #path img
pure (img, size)