197 lines
4.8 KiB
Haskell
197 lines
4.8 KiB
Haskell
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 qualified Data.Text as Strict
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import qualified Data.Text.Lazy as Lazy
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import Data.Text.Lazy.Builder (Builder, toLazyText)
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import Data.Time (formatTime, defaultTimeLocale)
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import Data.Maybe (fromMaybe)
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import qualified Data.Char as Char
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import qualified Data.List as List
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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 :: Bool -> Info -> Lazy.Text
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make nsfw = toLazyText . make' nsfw
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make' :: Bool -> Info -> Builder
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make' nsfw (Info {date, title, artist, tags, nsfwTags,
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description, images, background, links}) = [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/single.css>
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$titleTag
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<header>
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$titleHeader
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$artistTag
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<h2 class=date>$formattedDate</h2>
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$buttonBar
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</header>
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<script async src=/script/single.js></script>
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<main>
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<figure id=mainfig$dataBg>
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$warning'
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<a id=mainlink href="$@path0">
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<img id=mainimg src="$@path0'">
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</a>
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</figure>
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<section class=info>
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$descSection
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$tagsList
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$linksList
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</section>
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</main>
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<footer>
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<nav class=back>
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<a href=../>back to gallery</a>
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</nav>
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</footer>
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|]
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where
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titleTag = ifJust title \t -> [b|<title>$*t</title>|]
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titleHeader = ifJust title \t -> [b|<h1>$*t</h1>|]
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artistTag = ifJust artist makeArtist
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formattedDate = formatDate date
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buttonBar = makeButtonBar (fromMaybe (Strict.pack path0) title) nsfw images
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image0 = head images
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path0 = #path image0
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path0' = pageFile path0
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descSection = ifJust description makeDesc
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tagsList = makeTags nsfw tags nsfwTags
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linksList = extLinks nsfw links
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dataBg = ifJust background \bg -> [b| data-bg="$*bg"|]
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warning' = ifJust (#warning image0) \w -> [b|@4
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<figcaption id=cw>
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$*w
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</figcaption>
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|]
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makeArtist :: Artist -> Builder
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makeArtist (Artist {name, url}) =
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[b|<h2 class=artist>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 :: Strict.Text -> Builder
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makeDesc desc = [b|@4
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<section class=desc>
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<h2>about</h2>
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<div>
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$8*desc
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</div>
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</section>
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|]
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ifJust :: Monoid b => Maybe a -> (a -> b) -> b
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ifJust x f = maybe mempty f x
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formatDate :: Day -> Builder
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formatDate d =
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let str = formatTime defaultTimeLocale "%e %#B %Y" d in [b|$@str|]
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makeButtonBar :: Strict.Text -> Bool -> [Image] -> Builder
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makeButtonBar title nsfw allImages =
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case length images of
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0 -> throw $ NoEligibleImages title
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1 -> ""
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_ -> [b|@2
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<nav class=alts>
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<ul id=altlist>
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$6.alts
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</ul>
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</nav>
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|]
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where
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images | nsfw = allImages
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| otherwise = filter #sfw allImages
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alts = map (uncurry altButton) $ zip [0..] images
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altButton :: Int -> Image -> Builder
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altButton i (Image {label, path, nsfw, warning}) = [b|@6
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<li$nsfwClass>
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<input type=radio$checked id="$idLabel" name=variant
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autocomplete=off value="$@path'"
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data-link="$@path"$warning'>
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<label for="$idLabel">$*label</label>
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|]
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where
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nsfwClass = if nsfw then " class=nsfw" else ""
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checked = if i == 0 then " checked" else ""
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idLabel = escId label
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path' = pageFile path
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warning' = ifJust warning \w -> [b| data-warning="$*w"|]
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escId :: Strict.Text -> Builder
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escId = foldMap esc1 . Strict.unpack where
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esc1 c
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| Char.isSpace c = ""
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| c < 'ÿ' && not (Char.isAlphaNum c || c == '-') = "_"
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| otherwise = [b|$'c|]
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makeTags :: Bool -> [Strict.Text] -> [Strict.Text] -> Builder
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makeTags nsfw sfwTags nsfwTags =
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if null tags then "" else [b|@4
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<section class=tags>
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<h2>tags</h2>
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<ul>
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$8.tagList
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</ul>
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</section>
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|]
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where
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tagList = map makeTag tags
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makeTag t = [b|<li>$*t|]
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tags = List.nub $ if nsfw then sfwTags <> nsfwTags else sfwTags
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extLinks :: Bool -> [Link] -> Builder
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extLinks nsfw allLinks =
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if null links then "" else [b|@4
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<section class=links>
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<h2>links</h2>
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<ul>
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$8.linkList
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</ul>
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</section>
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|]
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where
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links = if nsfw then allLinks else filter #sfw allLinks
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linkList = map extLink links
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extLink :: Link -> Builder
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extLink (Link {title, url}) = [b|@6
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<li>
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<a href="$*url">
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$*title
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</a>
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|]
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