142 lines
4.6 KiB
Haskell
Executable file
142 lines
4.6 KiB
Haskell
Executable file
-- pulling heavily from https://abhinavsarkar.net/posts/static-site-generator-using-shake/
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-- docs:
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-- https://hackage.haskell.org/package/shake-0.19.8/docs/doc-index-All.html
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-- https://hackage.haskell.org/package/pandoc-3.2.1/docs/doc-index-All.html
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-- https://hackage.haskell.org/package/mustache-2.4.2/docs/doc-index.html
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--
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{-# LANGUAGE ApplicativeDo, DataKinds, DeriveGeneric #-}
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{-# LANGUAGE DerivingVia, TypeApplications #-}
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module Main where
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import Control.Monad (forM)
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import Data.List (sortOn)
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import Data.Text (Text)
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import Data.Time (UTCTime, defaultTimeLocale, formatTime, parseTimeM)
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import Deriving.Aeson
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import Deriving.Aeson.Stock (PrefixedSnake)
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import Development.Shake (Action, Rules, (|%>), (~>), (%>))
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import Development.Shake.FilePath ((</>))
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import qualified Data.HashMap.Strict as HM
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import qualified Data.Ord as Ord
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import qualified Data.Text as T
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import qualified Development.Shake as Shake
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import qualified Development.Shake.FilePath as Shake
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import Config
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import Utilities
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import Templates
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-- target = thing we want
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-- Rule = pattern of thing being made + actions to produce the thing
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-- Action = actions to produce a thing
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main :: IO ()
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main = Shake.shakeArgs Shake.shakeOptions $ do
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Shake.withTargetDocs "Build the site" $
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"build" ~> buildSite
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Shake.withTargetDocs "Clean the built site" $
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"clean" ~> Shake.removeFilesAfter outputDir ["//*"]
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Shake.withoutTargets buildRules
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buildSite :: Action ()
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buildSite = do
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-- static files
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assetPaths <- Shake.getDirectoryFiles "" assetGlobs
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-- path concat each asset path so it's output into the outputDir
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Shake.need $ map (outputDir </>) assetPaths
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-- take the misc pages which aren't blog posts and make their html files
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Shake.need $ map indexHtmlOutputPath pagePaths
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-- handle posts
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postPaths <- Shake.getDirectoryFiles "" postGlobs
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Shake.need $ map indexHtmlOutputPath postPaths
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-- remaining pages, index.xml = rss feed
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Shake.need $ map (outputDir </>) ["index.html", "index.xml"]
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buildRules :: Rules ()
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buildRules = do
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home
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assets
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pages
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posts
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rss
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-- make a rule of the pattern outputDir/asset_name which copes from outputDir/../pages
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assets :: Rules ()
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assets = map (outputDir </>) assetGlobs |%> \target -> do
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let src = Shake.dropDirectory1 target </> "pages"
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Shake.copyFileChanged src target
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Shake.putInfo $ "Copied " <> target <> " from " <> src
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data Page = Page {pageTitle :: Text, pageContent :: Text}
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deriving (Show, Generic)
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deriving (ToJSON) via PrefixedSnake "page" Page
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pages :: Rules ()
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pages = map indexHtmlOutputPath pagePaths |%> \target -> do
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let src = indexHtmlSourcePath target
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(meta, html) <- typstToHtml src
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let page = Page (meta HM.! "title") html
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applyTemplateAndWrite "default.html" page target
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Shake.putInfo $ "Built " <> target <> " from " <> src
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data Post = Post
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{ postTitle :: Text,
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postAuthor :: Maybe Text,
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postTags :: [Text],
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postDate :: Maybe Text,
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postContent :: Maybe Text,
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postLink :: Maybe Text
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} deriving (Show, Generic)
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deriving (FromJSON, ToJSON) via PrefixedSnake "post" Post
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posts :: Rules ()
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posts = map indexHtmlOutputPath postGlobs |%> \target -> do
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let src = indexHtmlSourcePath target
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post <- readPost src
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postHtml <- applyTemplate "post.html" post
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let page = Page (postTitle post) postHtml
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applyTemplateAndWrite "default.html" page target
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Shake.putInfo $ "Built " <> target <> " from " <> src
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home :: Rules ()
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home = outputDir </> "index.html" %> \target -> do
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postPaths <- Shake.getDirectoryFiles "" postGlobs
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posts <- take 3
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. sortOn (Ord.Down . postDate)
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<$> forM postPaths readPost
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html <- applyTemplate "home.html" $ HM.singleton "posts" posts
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let page = Page (T.pack "Home") html
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applyTemplateAndWrite "default.html" page target
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Shake.putInfo $ "Built " <> target
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rss :: Rules ()
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rss = outputDir </> "index.xml" %> \target -> do
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postPaths <- Shake.getDirectoryFiles "" postGlobs
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posts <- sortOn (Ord.Down . postDate) <$> forM postPaths readPost
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-- figure out how to convert this into applyTemplateAndWrite
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feed <- applyTemplate "feed.xml" $ HM.singleton "posts" posts
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Shake.putInfo $ "Built " <> target
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readPost :: FilePath -> Action Post
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readPost postPath = do
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date <- parseTimeM False defaultTimeLocale "%Y-%-m-%-d"
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. take 10
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. Shake.takeBaseName
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$ postPath
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let formattedDate =
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T.pack $ formatTime @UTCTime defaultTimeLocale "%b %e, %Y" date
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(post, html) <- typstToHtml postPath
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Shake.putInfo $ "Read " <> postPath
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return $ post
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{ postDate = Just formattedDate,
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postContent = Just html,
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postLink = Just . T.pack $ "/" <> Shake.dropExtension postPath <> "/"
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}
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