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module Main where
import Text.Hakyll (hakyll)
import Text.Hakyll.Render
import Text.Hakyll.Tags (TagMap, readCategoryMap)
import Text.Hakyll.File (getRecursiveContents, directory, removeSpaces, sortByBaseName)
import Text.Hakyll.Renderables (createPagePath, createCustomPage, createListingWith, createListing)
import Text.Hakyll.Context (ContextManipulation, renderDate)
import Text.Hakyll.Util (link)
import Data.Map (toList)
import Control.Monad (mapM_, liftM, (<=<))
import Data.Either (Either(..))
main = hakyll $ do
-- Static directory.
directory css "css"
-- Find all post paths.
postPaths <- liftM (reverse . sortByBaseName) $ getRecursiveContents "posts"
let renderablePosts = map createPagePath postPaths
-- Read category map.
categoryMap <- readCategoryMap "categoryMap" renderablePosts
-- Render all posts list.
renderPostList "posts.html" "All posts" renderablePosts
-- Render post list per category
mapM_ (\(category, posts) -> renderPostList (categoryToUrl category) ("Posts about " ++ category) posts)
(toList categoryMap)
-- Render index, including recent posts.
let index = createListingWith postManipulation "index.html"
"templates/postitem.html"
(take 3 renderablePosts)
[ ("title", "Home")
, ("categories", categoryList categoryMap)
]
renderChain ["index.html", "templates/default.html"] index
-- Render all posts.
mapM_ (renderChainWith postManipulation
["templates/post.html"
,"templates/default.html"
]) renderablePosts
-- Render rss feed
let rss = createListing "rss.xml" "templates/rssitem.xml" (take 3 renderablePosts) []
renderChain ["templates/rss.xml"] rss
where postManipulation :: ContextManipulation
postManipulation = renderDate "date" "%B %e, %Y" "Date unknown"
categoryToUrl category = "$root/categories/" ++ removeSpaces category ++ ".html"
categoryList :: TagMap -> String
categoryList = uncurry categoryListItem <=< toList
categoryListItem category posts = "<li>" ++ link category (categoryToUrl category)
++ " - " ++ show (length posts) ++ " items.</li>"
renderPostList url title posts = do
let list = createListingWith postManipulation url "templates/postitem.html" posts [("title", title)]
renderChain ["posts.html", "templates/default.html"] list
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