gallery/make-pages/SinglePage.hs

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module SinglePage (make) where
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import Depend (pageFile)
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import Info hiding (Text)
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import BuilderQQ
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import Records ()
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import Control.Exception
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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 qualified Data.Time.Calendar as Time
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import System.FilePath (joinPath, splitPath, (</>))
import qualified System.Process as Proc
import Text.Read (readMaybe)
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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 :: Bool -- ^ nsfw?
-> FilePath -- ^ data dir
-> FilePath -- ^ subdir of datadir containing this @info.yaml@
-> Info -> IO Lazy.Text
make nsfw dataDir dir info = toLazyText <$> make' nsfw dataDir dir info
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make' :: Bool -> FilePath -> FilePath -> Info -> IO Builder
make' nsfw dataDir dir info@(Info {date, title, artist}) = do
images <- withSizes (dataDir </> dir) $ imagesFor nsfw info
let undir = joinPath (replicate (length (splitPath dir)) "..")
let artistTag = ifJust artist makeArtist
let formattedDate = formatDate date
let buttonBar = makeButtonBar title images
let (image0@(Image {path = path0, download = download0'}),
Size {width = width0, height = height0})
= head images
let download0 = fromMaybe path0 download0'
let path0' = pageFile path0
let descSection = makeDesc $ descFor nsfw info
let tagsList = makeTags undir $ tagsFor nsfw info
let linksList = extLinks $ linksFor nsfw info
let makePrefetch (Image {path}) = [b|<link rel=prefetch href=$@path>|]
let prefetches = map (makePrefetch . #first) $ tail images
let warning' = ifJust (#warning image0) \w -> [b|@4
<figcaption id=cw aria-role=button tabindex=0>
<span id=cw-text>cw: <b>$*w</b></span>
</figcaption>
|]
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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<script src=/script/single.js></script>
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$0.prefetches
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<title>$*title</title>
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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">$formattedDate</h2>
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</header>
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$buttonBar
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<main>
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<figure id=mainfig
data-width=$^width0 data-height=$^height0>
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$warning'
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<a id=mainlink href="$@download0" title="download full version">
<img id=mainimg src="$@path0'" alt="">
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</a>
</figure>
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<div id=info>
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$descSection
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$tagsList
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$linksList
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</div>
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</main>
<footer>
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<a href=$@undir>back to gallery</a>
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</footer>
|]
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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 :: Maybe Strict.Text -> Builder
makeDesc mdesc = ifJust mdesc \desc -> [b|@4
<section id=desc class=info-section>
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<h2>about</h2>
<div>
$8*desc
</div>
</section>
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|]
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makeButtonBar :: Strict.Text -> [(Image, Size)] -> Builder
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makeButtonBar title images =
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case length images of
0 -> throw $ NoEligibleImages title
1 -> ""
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_ -> [b|@0
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<nav id=alts aria-label="alternate versions">
<ul class="buttonbar bb-choice">
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$4.alts
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</ul>
</nav>
|]
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where alts = map (\(i, (im, sz)) -> altButton i im sz) $ zip [0..] images
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altButton :: Int -> Image -> Size -> Builder
altButton i (Image {label, path, nsfw, warning}) (Size {width, height}) = [b|@4
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<li$nsfwClass>
<input type=radio$checked id="$idLabel" name=variant
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autocomplete=off value="$@path'"
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data-link="$@path"$warning'
data-width=$^width data-height=$^height>
<label for="$idLabel"$nsfwLabelClass>$*label</label>
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|]
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where
nsfwClass = if nsfw then " class=nsfw" else ""
nsfwLabelClass = if nsfw then " class=nsfw-label" else ""
checked = if i == 0 then " checked" else ""
idLabel = escId label
path' = pageFile path
warning' = ifJust warning \w -> [b| data-warning="$*w"|]
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makeTags :: FilePath -> [Strict.Text] -> Builder
makeTags undir tags =
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if null tags then "" else [b|@4
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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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$8.tagList
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</ul>
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</nav>
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|]
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where
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tagList = map makeTag tags
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makeTag tag = [b|<li><a href="$@undir#require_$tag'">$*tag</a>|]
where tag' = escId tag
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extLinks :: [Link] -> Builder
extLinks links =
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if null links then "" else [b|@4
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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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$8.linkList
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</ul>
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</nav>
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|]
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where linkList = map extLink links
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extLink :: Link -> Builder
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extLink (Link {title, url}) = [b|@8
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<li>
<a href="$*url">
$*title
</a>
|]
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formatDate :: Day -> Builder
formatDate date = [b|$*week $day $*month $^year|] where
(year, month', day') = Time.toGregorian date
week' = Time.dayOfWeek date
day = nth day'
month = Strict.words "january february march april may june july \
\august september october november december"
!! (month' - 1)
week = Strict.words "mon tue wed thu fri sat sun" !! (fromEnum week' - 1)
nth :: Int -> Builder
nth n = [b|$^n$suf|] where
suf | n >= 10, n <= 19 = "th"
| n `mod` 10 == 1 = "st"
| n `mod` 10 == 2 = "nd"
| n `mod` 10 == 3 = "rd"
| otherwise = "th"
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data Size = Size {height, width :: !Int} deriving (Eq, Show)
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
withSizes :: FilePath -> [Image] -> IO [(Image, Size)]
withSizes dir = traverse \img -> do
size <- imageSize dir $ #path img
pure (img, size)