dgnum.eu/ssg/ssg.hs

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{-# LANGUAGE ImportQualifiedPost #-}
{-# LANGUAGE LambdaCase #-}
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{-# LANGUAGE OverloadedStrings #-}
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{-# LANGUAGE RankNTypes #-}
-- Copyright 2023 Gabriel Doriath Döhler, Délégation Générale Numérique (DGNum)
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import Control.Applicative ((<|>))
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import Control.Monad (void, (<=<))
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import Data.List (intersperse)
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import Data.Map qualified as M
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import Data.Monoid (First (..))
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import Hakyll
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import Text.Blaze.Html.Renderer.String (renderHtml)
import Text.Blaze.Html5 qualified as H
import Text.Blaze.Html5.Attributes qualified as A
import Text.Pandoc.Definition
( Block (Header, Para, Plain),
Inline (..),
Pandoc (..),
)
import Text.Pandoc.Options (HTMLMathMethod (MathML), WriterOptions (..))
import Text.Pandoc.Walk (query, walk)
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--------------------------------------------------------------------------------
nbPostsHome :: Int
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nbPostsHome = 10
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poleName :: M.Map String String
poleName =
M.fromList
[ ("administration-systeme", "Administration Système"),
("communication", "Communication"),
("formation", "Formation"),
("geopolitique", "Géopolitique"),
("juridique", "Juridique"),
("logiciel", "Logiciel"),
("recherche", "Recherche")
]
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patternFrom :: [String] -> [String] -> Pattern
patternFrom basenames extensions =
foldl1 (.||.) $ map aux basenames
where
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aux basename =
foldl1 (.||.) $ map (fromGlob . (++) "./**.") extensions
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postPattern :: Pattern
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postPattern = fromGlob "posts/**.md"
filePattern :: Pattern
filePattern =
patternFrom
["."]
[ "djvu",
"gif",
"ico",
"jpeg",
"jpg",
"pdf",
"png",
"ps",
"svg",
"tex",
"txt"
]
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--------------------------------------------------------------------------------
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main :: IO ()
main = hakyll $ do
tags <- extractMeta "tags"
authors <- extractMeta "authors"
poles <- extractMeta "poles"
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-- Static files
match ("vendor/**" .||. "images/**" .||. "documents/**" .||. filePattern) $ do
route idRoute
compile copyFileCompiler
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-- Minified CSS and JS
match ("js/*.min.js" .||. "css/*.min.css") $ do
route idRoute
compile copyFileCompiler
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-- Regular CSS
match "css/*.css" $ do
route idRoute
compile compressCssCompiler
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-- Index page
match "index.html" $ do
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route idRoute
compile $ do
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allPosts <- recentFirst =<< loadAll ("posts/**.md" .&&. hasNoVersion)
let posts = take nbPostsHome allPosts
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let ctx =
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listField "posts" postCtx (return posts)
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<> context
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getResourceBody
>>= applyAsTemplate ctx
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>>= loadAndApplyTemplate "templates/default.html" ctx
>>= relativizeUrls
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-- Regular pages
match "about.html" $ do
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route idRoute
compile $ do
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getResourceBody
>>= applyAsTemplate context
>>= loadAndApplyTemplate "templates/default.html" context
>>= relativizeUrls
match ("faq.md" .||. "services.md" .||. "contact.md") $ do
route $ setExtension "html"
compile $
customPandocCompiler
>>= loadAndApplyTemplate "templates/default.html" (postCtxWith tags authors poles)
>>= relativizeUrls
-- Archives (i.e. list of all posts)
match "archives.html" $ do
route idRoute
compile $ do
allPosts <- recentFirst =<< loadAll ("posts/**.md" .&&. hasNoVersion)
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let ctx =
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listField "posts" postCtx (return allPosts)
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<> context
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getResourceBody
>>= applyAsTemplate ctx
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>>= loadAndApplyTemplate "templates/default.html" ctx
>>= relativizeUrls
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-- Invidual posts
match "posts/**.md" $ do
route $ setExtension "html"
compile $
customPandocCompiler
>>= loadAndApplyTemplate "templates/post.html" (postCtxWith tags authors poles)
>>= loadAndApplyTemplate "templates/default.html" (postCtxWith tags authors poles)
>>= relativizeUrls
-- Divisions
tagsRules poles $ \_ polesPattern -> do
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route idRoute
compile $ do
posts <- loadAll polesPattern >>= recentFirst
let ctx =
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listField "posts" postCtx (return posts)
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<> context
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getResourceBody
>>= applyAsTemplate ctx
>>= loadAndApplyTemplate "templates/division.html" ctx
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>>= loadAndApplyTemplate "templates/default.html" ctx
>>= relativizeUrls
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match "poles/*.html" $ do
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route idRoute
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compile $ do
getResourceBody
>>= applyAsTemplate context
>>= loadAndApplyTemplate "templates/division.html" context
>>= loadAndApplyTemplate "templates/default.html" context
>>= relativizeUrls
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create ["poles.html"] $ do
route idRoute
compile (polePanelCompiler poles)
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-- Authors
tagsRules authors $ \authorStr authorsPattern -> do
let title = "Articles écrits par « " ++ authorStr ++ " »"
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route idRoute
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compile $ do
posts <- loadAll authorsPattern >>= recentFirst
let ctx =
constField "title" title
<> listField "posts" postCtx (return posts)
<> context
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makeItem ""
>>= loadAndApplyTemplate "templates/author.html" ctx
>>= loadAndApplyTemplate "templates/default.html" ctx
>>= relativizeUrls
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create ["authors.html"] $ do
route idRoute
compile (authorPanelCompiler authors)
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-- Tags
tagsRules tags $ \tagStr tagsPattern -> do
let title = "Articles relatifs à « " ++ tagStr ++ " »"
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route idRoute
compile $ do
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posts <- loadAll tagsPattern >>= recentFirst
let ctx =
constField "title" title
<> listField "posts" postCtx (return posts)
<> context
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makeItem ""
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>>= loadAndApplyTemplate "templates/tag.html" ctx
>>= loadAndApplyTemplate "templates/default.html" ctx
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>>= relativizeUrls
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create ["tags.html"] $ do
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route idRoute
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compile (tagPanelCompiler tags)
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-- Partial templates to be used elsewhere
match "templates/*" $ compile templateBodyCompiler
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-- Markdown version of posts
match "posts/**.md" $ version "raw" $ do
route idRoute
compile $ getResourceBody >>= relativizeUrls
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--------------------------------------------------------------------------------
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-- Metadata extraction
extractMeta :: String -> Rules Tags
extractMeta name = do
tags <- buildTagsWith (getTagsByField name) postPattern (fromCapture (fromGlob (name ++ "/*.html")))
return (sortTagsBy caseInsensitiveTags tags)
-- Renderers
makeAuthorPanelLink :: String -> String -> Int -> Int -> Int -> String
makeAuthorPanelLink author url count _ _ =
renderHtml $ H.a H.! A.href (H.toValue url) H.! A.class_ "panel-block" $ do
H.span H.! A.class_ "tag mr-3" $ H.toHtml (pluralize count "publication")
H.toHtml author
authorPanelCompiler :: Tags -> Compiler (Item String)
authorPanelCompiler authors = do
let ctx =
field "authors" (\_ -> renderTags makeAuthorPanelLink (mconcat . intersperse "\n") authors)
<> constField "title" "Liste des auteur·e·s"
<> context
makeItem ""
>>= loadAndApplyTemplate "templates/authors.html" ctx
>>= loadAndApplyTemplate "templates/default.html" ctx
>>= relativizeUrls
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makePolePanelLink :: String -> String -> Int -> Int -> Int -> String
makePolePanelLink pole url count _ _ =
renderHtml $ H.a H.! A.href (H.toValue url) H.! A.class_ "panel-block" $ do
H.span H.! A.class_ "tag mr-3" $ H.toHtml (pluralize count "publication")
H.toHtml (poleName M.! pole)
polePanelCompiler :: Tags -> Compiler (Item String)
polePanelCompiler poles = do
let ctx =
field "poles" (\_ -> renderTags makePolePanelLink (mconcat . intersperse "\n") poles)
<> constField "title" "Liste des pôles"
<> context
makeItem ""
>>= loadAndApplyTemplate "templates/poles.html" ctx
>>= loadAndApplyTemplate "templates/default.html" ctx
>>= relativizeUrls
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makeTagPanelLink :: String -> String -> Int -> Int -> Int -> String
makeTagPanelLink tag url count _ _ =
renderHtml $ H.a H.! A.href (H.toValue url) H.! A.class_ "panel-block" $ do
H.span H.! A.class_ "tag mr-3" $ H.toHtml (pluralize count "publication")
H.toHtml tag
tagPanelCompiler :: Tags -> Compiler (Item String)
tagPanelCompiler tags = do
let ctx =
field "tags" (\_ -> renderTags makeTagPanelLink (mconcat . intersperse "\n") tags)
<> constField "title" "Liste des catégories"
<> context
makeItem ""
>>= loadAndApplyTemplate "templates/tags.html" ctx
>>= loadAndApplyTemplate "templates/default.html" ctx
>>= relativizeUrls
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renderTagLink :: String -> Maybe FilePath -> Maybe H.Html
renderTagLink _ Nothing = Nothing
renderTagLink tag (Just filePath) =
Just
$ H.a
H.! A.title (H.stringValue $ "Pages relatives à « " ++ tag ++ " »")
H.! A.class_ "tag is-link"
H.! A.href (H.toValue $ toUrl filePath)
$ H.toHtml tag
renderPoleLink :: String -> Maybe FilePath -> Maybe H.Html
renderPoleLink _ Nothing = Nothing
renderPoleLink pole (Just filePath) =
Just
$ H.a
H.! A.title (H.stringValue $ "Page du pôle « " ++ (poleName M.! pole) ++ " »")
H.! A.class_ "tag is-light has-text-dark"
H.! A.href (H.toValue $ toUrl filePath)
$ H.toHtml (poleName M.! pole)
makeTags :: [H.Html] -> H.Html
makeTags tags = H.div H.! A.class_ "tags mt-2" $ (mconcat . intersperse "\n") tags
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-- Utility functions
pluralize :: Int -> String -> String
pluralize count str = case count of
1 -> show count ++ " " ++ str
_ -> show count ++ " " ++ str ++ "s"
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abstract :: Pandoc -> Maybe [Inline]
abstract (Pandoc _ blocks) =
markedUp blocks <|> fallback blocks
where
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markedUp = fmap getFirst . query $ \case
Span (_, cls, _) inls | "abstract" `elem` cls -> First (Just inls)
_ -> mempty
fallback (Para inlines : Header {} : _) = Just inlines
fallback (_ : t) = fallback t
fallback [] = Nothing
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customPandocCompiler :: Compiler (Item String)
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customPandocCompiler =
pandocCompilerWithTransformM
defaultHakyllReaderOptions
defaultHakyllWriterOptions {writerHTMLMathMethod = MathML}
( \pandoc -> do
let render = fmap writePandoc . makeItem . Pandoc mempty . pure . Plain
maybe
(pure ())
(void . (saveSnapshot "abstract" <=< render))
(abstract pandoc)
pure $ addSectionLinks pandoc
)
>>= relativizeUrls
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addSectionLinks :: Pandoc -> Pandoc
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addSectionLinks = walk f
where
f (Header n attr@(idAttr, _, _) inlines) =
let link = Link ("", [""], []) [Str "§"] ("#" <> idAttr, "")
in Header n attr ([link, Space] <> inlines)
f x = x
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snapshotField :: String -> Snapshot -> Context String
snapshotField key snap = field key $ \item ->
loadSnapshotBody (itemIdentifier item) snap
context :: Context String
context =
mapContext escapeHtml metadataField
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<> snapshotField "abstract" "abstract"
<> defaultContext
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postCtx :: Context String
postCtx =
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dateField "date" "%d/%m/%Y"
<> context
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postCtxWith :: Tags -> Tags -> Tags -> Context String
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postCtxWith tags authors poles =
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tagsFieldWith (getTagsByField "poles") renderPoleLink makeTags "poles" poles
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<> tagsFieldWith (getTagsByField "authors") simpleRenderLink (mconcat . (\l -> if null l then [] else H.toHtml ("par " :: String) : l) . intersperse ", ") "author" authors
<> tagsFieldWith (getTagsByField "authors") licenseRenderLink (mconcat . intersperse ", " . (\l -> if null l then [] else l ++ [H.toHtml ("and" :: String)])) "authorLicense" authors
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<> tagsFieldWith getTags renderTagLink makeTags "tags" tags
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<> postCtx
simpleRenderLink :: String -> Maybe FilePath -> Maybe H.Html
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simpleRenderLink _ Nothing = Nothing
simpleRenderLink tag (Just filePath) =
Just $ H.a H.! A.href (H.toValue $ toUrl filePath) $ H.toHtml tag
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licenseRenderLink :: String -> Maybe FilePath -> Maybe H.Html
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licenseRenderLink _ Nothing = Nothing
licenseRenderLink tag (Just filePath) =
Just $ H.a H.! A.href (H.toValue $ toUrl filePath) H.! A.rel "cc:attributionURL dct:creator" $ H.toHtml tag