2020-07-07 23:28:09 -04:00
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{-# OPTIONS_GHC -fdefer-typed-holes #-}
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module ImagePage
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(make)
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where
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import Info hiding (Text)
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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 qualified Data.Char as Char
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import qualified Data.Vector as Vector
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make :: Info -> Lazy.Text
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make = toLazyText . make'
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make' :: Info -> Builder
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2020-07-09 00:18:53 -04:00
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make' (Info {date, title, tags, description, images, links}) =
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2020-07-07 23:28:09 -04:00
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"<!DOCTYPE html>\n" <>
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"<html lang=en>\n" <>
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"<meta charset=utf-8>\n" <>
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"<link href=single.css rel=stylesheet>\n\n" <>
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"<title>" <> esc title <> "</title>\n\n" <>
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"<header>\n" <>
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" <h1>" <> esc title <> "</h1>\n" <>
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" <h2 class=date>" <> formatDate date <> "</h2>\n" <>
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" <nav id=variants class=buttonbar>\n" <>
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" <h2>alts</h2>\n" <>
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" <ul id=variantlist>\n" <>
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Vector.ifoldl (\b i im -> b <> altButton i im) mempty images <>
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" </ul>\n" <>
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" </nav>\n" <>
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"</header>\n\n" <>
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"<main>\n" <>
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" <img id=it src=\"" <> path0 <> "\">\n" <>
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" <section id=description>\n" <>
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indent 4 description <>
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" </section>\n\n" <>
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" <h2>links</h2>\n" <>
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" <ul>\n" <>
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foldMap extLink links <>
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" </ul>\n" <>
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"</main>\n\n" <>
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"<nav class=back>\n" <>
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" <a href=../>back to gallery</a>\n" <>
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"</nav>\n"
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where
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path0 = let Image {path} = Vector.head images in fromText path
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2020-07-07 23:28:09 -04:00
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esc :: Strict.Text -> Builder
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esc = foldMap esc1 . Strict.unpack where
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esc1 '<' = "<"
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esc1 '>' = ">"
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esc1 '&' = "&"
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esc1 '"' = """
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esc1 '\'' = "&squot;"
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esc1 c = singleton c
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formatDate :: Day -> Builder
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formatDate = fromString . formatTime defaultTimeLocale "%e %#B %Y"
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altButton :: Int -> Image -> Builder
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altButton i (Image {label, path, nsfw}) =
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" <li" <> nsfwClass <> ">\n" <>
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" <input type=radio " <> checked <> "id=\"" <> idLabel <> "\" " <>
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"name=variant autocomplete=off\n" <>
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" value=\"" <> fromText path <> "\">\n" <>
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" <label for=\"" <> idLabel <> "\">" <> fromText label <> "</label>\n"
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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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indent :: Int -> Strict.Text -> Builder
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indent n txt = spaces <> go (Strict.unpack txt) where
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go "" = mempty
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go "\n" = "\n"
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go ('\n':cs) = singleton '\n' <> spaces <> go cs
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go (c:cs) = singleton c <> go cs
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spaces = fromString $ replicate n ' '
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extLink :: Link -> Builder
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extLink (Link {title, url}) =
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" <li>\n" <>
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" <a href=\"" <> fromText url <> "\">\n" <>
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" " <> fromText title <> "\n" <>
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" </a>\n"
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