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{-# LANGUAGE OverloadedStrings #-}
module Main where
import Prelude hiding (id)
import Control.Arrow
import Control.Category (id)
import Control.Monad
import Data.Function (on)
import Data.List hiding (group)
import Data.Maybe
import Data.Monoid (mempty, mconcat)
import System.FilePath (takeFileName)
import System.Locale (defaultTimeLocale, TimeLocale)
import Data.Time.Calendar
import Data.Time.Clock (UTCTime (..))
import Data.Time.Format (parseTime, formatTime)
import Text.Printf
import Hakyll
main :: IO ()
main = hakyll $ do
-- Compress CSS
match "css/*" $ do
route idRoute
compile compressCssCompiler
-- Images
match "images/**" $ do
route idRoute
compile copyFileCompiler
-- Render posts
group "posts" $ do
match (inPostGroup "posts/*") $ do
route $ setExtension ".html"
compile $ pageCompiler
>>> addDate
>>> addTagCloud
>>> addArchiveLinks
>>> renderTagsField "prettytags" (fromCapture "tags/*")
>>> applyTemplateCompiler "templates/post.html"
>>> applyTemplateCompiler "templates/default.html"
>>> relativizeUrlsCompiler
-- Index
match "index.html" $ route idRoute
create "index.html" $ constA mempty
>>> arr (setField "title" "Home")
>>> addTagCloud
>>> addArchiveLinks
>>> requireAllA allPosts (id *** arr recentFirst >>> addPosts)
>>> applyTemplateCompiler "templates/index.html"
>>> applyTemplateCompiler "templates/default.html"
>>> relativizeUrlsCompiler
match "posts/*" $ compile $ readPageCompiler
>>> (id &&& getIdentifier)
>>> setFieldA "path" (arr $ fromMaybe "" . runRoutes (setExtension ".html"))
>>> (id &&& arr (getField "path"))
>>> setFieldA "url" (arr ('/':))
-- Tags
create "tags" $
requireAll allPosts (\_ ps -> readTags ps :: Tags String)
-- Add a tag list compiler for every tag
match "tags/*" $ route $ setExtension ".html"
metaCompile $ require_ "tags"
>>> arr tagsMap
>>> arr (map (\(t, p) -> (tagIdentifier t, makeTagList t p)))
-- Archive
create "archive" $
requireAll allPosts (\_ -> Tags . groupTuples . reverse . sortBy (compare `on` fst) . catMaybes . map (\page -> getDate page >>= (\date -> return (date, page))))
match "archive/**" $ route $ setExtension ".html"
metaCompile $ require_ "archive"
>>> arr tagsMap
>>> arr (map (\(m, p) -> (archiveIdentifier m, makeArchive m p)))
-- Render RSS feed
match "rss.xml" $ route idRoute
create "rss.xml" $ requireAll_ allPosts
>>> mapCompiler (arr $ copyBodyToField "description")
>>> renderRss feedConfiguration
-- Read templates
match "templates/*" $ compile templateCompiler
where
postGroup = Just "posts"
inPostGroup :: Pattern a -> Pattern a
inPostGroup p = patternIntersection [inGroup postGroup, p]
notInPostGroup :: Pattern a -> Pattern a
notInPostGroup p = patternIntersection [complement $ inGroup postGroup, p]
allPosts :: Pattern (Page String)
allPosts = notInPostGroup "posts/*"
patternIntersection :: [Pattern a] -> Pattern a
patternIntersection patterns = predicate $ flip all patterns . flip matches
getUTCMaybe :: TimeLocale -- ^ Output time locale
-> Page a -- ^ Input page
-> Maybe UTCTime -- ^ Parsed UTCTime
getUTCMaybe locale page = msum
[ fromPublished "%a, %d %b %Y %H:%M:%S UT"
, fromPublished "%Y-%m-%dT%H:%M:%SZ"
, fromPublished "%B %e, %Y %l:%M %p"
, fromPublished "%B %e, %Y"
, getFieldMaybe "path" page >>= parseTime' "%Y-%m-%d" .
intercalate "-" . take 3 . splitAll "-" . takeFileName
]
where
fromPublished f = getFieldMaybe "published" page >>= parseTime' f
parseTime' f str = parseTime locale f str
getDate :: Page a -> Maybe String
getDate = liftM ((\(y, m, _) -> printf "%04d/%02d" y m) . toGregorian . utctDay) . getUTCMaybe defaultTimeLocale
groupTuples :: Eq a => [(a, b)] -> [(a, [b])]
groupTuples = map (fst . head &&& map snd) . groupBy ((==) `on` fst)
addPosts :: Compiler (Page String, [Page String]) (Page String)
addPosts = setFieldA "posts" $
mapCompiler (addDate
>>> addTagCloud
>>> renderTagsField "prettytags" (fromCapture "tags/*")
>>> applyTemplateCompiler "templates/post_short.html")
>>> arr mconcat
>>> arr pageBody
addDate = arr $ renderDateField "date" "<span class=\"data\"><span class=\"j\">%e</span>%b/%y</span>" ""
addTagCloud = requireA "tags" (setFieldA "tagcloud" renderTagCloud')
where
renderTagCloud' :: Compiler (Tags String) String
renderTagCloud' = renderTagCloud tagIdentifier 100 300
addArchiveLinks = requireA "archive" (setFieldA "archive" renderArchive)
where
renderArchive :: Compiler (Tags String) String
renderArchive = arr tagsMap
>>> arr (map (\(s, p) -> "<li><a href=\"/archive/" ++ s ++ ".html\" title=\"" ++ prettyMonth s ++ "\">" ++ prettyMonth s ++ "</a> (" ++ show (length p) ++ ")</li>"))
>>> arr mconcat
prettyMonth :: String -> String
prettyMonth s = month ++ " " ++ year
where
year = take 4 s
month = case (drop 5 s) of
"01" -> "January"
"02" -> "February"
"03" -> "March"
"04" -> "April"
"05" -> "May"
"06" -> "June"
"07" -> "July"
"08" -> "August"
"09" -> "September"
"10" -> "October"
"11" -> "November"
"12" -> "December"
_ -> "Unknown"
tagIdentifier :: String -> Identifier (Page String)
tagIdentifier = fromCapture "tags/*"
archiveIdentifier :: String -> Identifier (Page String)
archiveIdentifier = fromCapture "archive/*"
makeTagList :: String -> [Page String] -> Compiler () (Page String)
makeTagList tag posts = constA (mempty, posts)
>>> addPosts
>>> addTagCloud
>>> addArchiveLinks
>>> arr (setField "title" ("Posts tagged ‘" ++ tag ++ "’"))
>>> applyTemplateCompiler "templates/posts.html"
>>> applyTemplateCompiler "templates/default.html"
>>> relativizeUrlsCompiler
makeArchive :: String -> [Page String] -> Compiler () (Page String)
makeArchive month posts = constA (mempty, posts)
>>> addPosts
>>> addTagCloud
>>> addArchiveLinks
>>> arr (setField "title" ("Archive for " ++ prettyMonth month))
>>> applyTemplateCompiler "templates/posts.html"
>>> applyTemplateCompiler "templates/default.html"
>>> relativizeUrlsCompiler
feedConfiguration :: FeedConfiguration
feedConfiguration = FeedConfiguration
{ feedTitle = "Universe Factory"
, feedDescription = "Because one universe is not enough"
, feedAuthorName = "NeoRaider"
, feedRoot = "http://blog.universe-factory.net/"
}
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