1 files changed, 47 insertions, 0 deletions
diff --git a/src/Zettel/Render.hs b/src/Zettel/Render.hs
new file mode 100644
index 0000000..c64a910
--- /dev/null
+++ b/src/Zettel/Render.hs
@@ -0,0 +1,47 @@
+{-# LANGUAGE OverloadedRecordDot #-}
+
+module Zettel.Render where
+
+import Data.Default (def)
+import qualified Data.Map.Strict as Map
+import qualified Data.Text as T
+import Paths_org_zk (getDataFileName)
+import Text.Pandoc.Class (runIOorExplode)
+import Text.Pandoc.Definition (Block (..), Inline (..))
+import Text.Pandoc.Options (WriterOptions (..), multimarkdownExtensions)
+import Text.Pandoc.Templates (WithDefaultPartials (..), compileTemplate)
+import Text.Pandoc.Writers (writeMarkdown)
+import Zettel.Types
+
+zettelIdToLink :: ZettelId -> Inline
+zettelIdToLink ident = Link mempty [Str $ "#" <> unZettelId ident] ("/" <> unZettelId ident, "")
+
+renderZettelLinks :: [ZettelId] -> Block
+renderZettelLinks =
+  BulletList . map (\ident -> [Para [zettelIdToLink ident]])
+
+toInlines :: Text -> [Inline]
+toInlines t = intersperse Space . map Str $ T.words t
+
+renderTitleLinks :: Int -> Text -> [ZettelId] -> [Block]
+renderTitleLinks level title ids =
+  [Header level mempty (toInlines title), renderZettelLinks ids]
+
+renderZettel :: ZettelId -> ZettelNode -> IO Text
+renderZettel _ zettel = do
+  templateFile <- getDataFileName "data/markdown.template"
+  template <- decodeUtf8 <$> readFileBS templateFile
+  Right templ <- runIOorExplode . runWithDefaultPartials $ compileTemplate "" template
+  runIOorExplode $
+    writeMarkdown
+      (def {writerTemplate = Just templ, writerExtensions = multimarkdownExtensions})
+      (zettel.zettelNodeZettel.zettelBody)
+
+renderZettelFile :: FilePath -> ZettelId -> ZettelNode -> IO ()
+renderZettelFile dir ident zettel = do
+  t <- renderZettel ident zettel
+  writeFileText (dir <> "/" <> toString (unZettelId ident <> ".md")) t
+
+renderZettelGraphFile :: FilePath -> ZettelGraph -> IO ()
+renderZettelGraphFile fp zg =
+  forM_ (Map.assocs (unZettelGraph zg)) $ uncurry (renderZettelFile fp)