site.hs

{-# LANGUAGE OverloadedStrings #-}
import           Data.Monoid (mappend)
import           Hakyll
import           Control.Monad (when)

--------------------------------------------------------------------------------

config :: Configuration
config = defaultConfiguration
  { destinationDirectory = "docs"
  }

main :: IO ()
main = hakyllWith config $ do
    match "images/*" $ do
        route   idRoute
        compile copyFileCompiler

    match "css/*" $ do
        route   idRoute
        compile compressCssCompiler

    match (fromList ["about.rst", "contact.markdown"]) $ do
        route   $ setExtension "html"
        compile $ pandocCompiler
            >>= loadAndApplyTemplate "templates/default.html" defaultContext
            >>= relativizeUrls

    -- Build tags and define tag rules
    tags <- buildTags "posts/*" (fromCapture "tags/*.html")
    tagsRules tags $ \tag pattern -> do
        
        when (tag `elem` ["philosophy", "politics", "software"]) $ do
            let title = "Posts in category: " ++ tag
            route idRoute
            compile $ do
                posts <- recentFirst =<< loadAll pattern
                let ctx = constField "title" title
                          `mappend` listField "posts" (postCtxWithTags tags) (return posts)
                          `mappend` defaultContext

                makeItem ""
                    >>= loadAndApplyTemplate "templates/tag.html" ctx
                    >>= loadAndApplyTemplate "templates/default.html" ctx
                    >>= relativizeUrls

    match "posts/*" $ do
        route $ setExtension "html"
        compile $ pandocCompiler
            >>= loadAndApplyTemplate "templates/post.html"    (postCtxWithTags tags)
            >>= loadAndApplyTemplate "templates/default.html" (postCtxWithTags tags)
            >>= relativizeUrls

    create ["archive.html"] $ do
        route idRoute
        compile $ do
            posts <- recentFirst =<< loadAll "posts/*"
            let archiveCtx =
                    listField "posts" postCtx (return posts) `mappend`
                    constField "title" "Archives"            `mappend`
                    defaultContext

            makeItem ""
                >>= loadAndApplyTemplate "templates/archive.html" archiveCtx
                >>= loadAndApplyTemplate "templates/default.html" archiveCtx
                >>= relativizeUrls

    -- Modifique o compilador da home para incluir a listagem de categorias
    match "index.html" $ do
        route idRoute
        compile $ do
            posts <- recentFirst =<< loadAll "posts/*"
           
            let cats = ["philosophy", "politics", "software"]
                catsHtml = "<ul>" <> mconcat [ "<li><a href=\"/tags/" <> cat <> ".html\">" <> cat <> "</a></li>" | cat <- cats ] <> "</ul>"
                indexCtx =
                    listField "posts" postCtx (return posts) `mappend`
                    constField "categories" catsHtml `mappend`
                    defaultContext
            getResourceBody
                >>= applyAsTemplate indexCtx
                >>= loadAndApplyTemplate "templates/default.html" indexCtx
                >>= relativizeUrls

    match "templates/*" $ compile templateBodyCompiler

--------------------------------------------------------------------------------
postCtx :: Context String
postCtx =
    dateField "date" "%B %e, %Y" `mappend`
    defaultContext

postCtxWithTags :: Tags -> Context String
postCtxWithTags tags = tagsField "tags" tags `mappend` postCtx