2020-07-09 00:20:09 -04:00
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module SinglePage (make) where
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2020-07-07 23:28:09 -04:00
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import Info hiding (Text)
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2020-07-12 22:01:31 -04:00
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import BuildVar
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2020-07-11 23:40:14 -04:00
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import Control.Exception
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2020-07-07 23:28:09 -04:00
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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
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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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2020-07-12 23:02:16 -04:00
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-- | e.g. only nsfw images are present for a non-nsfw page
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2020-07-11 23:40:14 -04:00
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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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2020-07-07 23:28:09 -04:00
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2020-07-09 15:48:29 -04:00
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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, tags, nsfwTags,
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description, images, 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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$titleTag
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<header>
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$titleHeader
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<h2 class=date>$formattedDate</date>
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$buttonBar
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</header>
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<main>
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<img id=it src="$*path0">
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$descSection
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$tagsList
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$linksList
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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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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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formattedDate = formatDate date
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buttonBar = makeButtonBar (fromMaybe path0 title) nsfw images
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path0 = let Image {path} = head images in path
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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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makeDesc :: Strict.Text -> Builder
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makeDesc desc = [b|@2
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<div class=desc>
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<h2>description</h2>
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$4*desc
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</div>
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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 = fromString . formatTime defaultTimeLocale "%e %#B %Y"
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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 id=variants class=buttonbar>
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<h2>alts</h2>
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<ul id=variantlist>
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$6.alts
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</ul>
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</nav>
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where
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images | nsfw = allImages
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| otherwise = filter (\Image {nsfw} -> not nsfw) allImages
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iimages = zip [0..] images
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alts = map (uncurry altButton) iimages
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altButton :: Int -> Image -> Builder
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altButton i (Image {label, path, nsfw}) = [b|@6
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<li$nsfwClass>
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<input type=radio$checked id="$idLabel" name=variant
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autocomplete=off value="$*path">
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<label for="$idLabel">$*label</label>
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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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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 = singleton c
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2020-07-11 23:42:31 -04:00
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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|@2
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<div class=tags>
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<h2>tags</h2>
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<ul>
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$6.tagList
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</ul>
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</div>
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where
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tagList = map makeTag tags
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makeTag t = [b|<li>$*t|]
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tags = List.nub $ if nsfw then sfwTags else sfwTags <> nsfwTags
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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|@2
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<div class=links>
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<h2>links</h2>
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<ul>
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$6.linkList
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</ul>
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</div>
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where
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links | nsfw = allLinks
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| otherwise = filter (\Link {nsfw} -> not nsfw) allLinks
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linkList = map extLink links
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extLink :: Link -> Builder
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extLink (Link {title, url}) = [b|@6
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<li>
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<a href="$*url">
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$*title
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</a>
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