{-# LANGUAGE NamedFieldPuns #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE FlexibleContexts #-}
module ArticlesList (
      ArticlesList(..)
    , otherUrl
    , pageTitle
  ) where

import Article (Article)
import Blog (Blog(..), get)
import Blog.Wording (render)
import Control.Monad.Reader (MonadReader)
import Data.Text (Text, pack)
import Files (absoluteLink)
import System.FilePath.Posix ((</>))

data ArticlesList = ArticlesList {
      tagged :: Maybe String
    , full :: Bool
    , featured :: [Article]
  }

otherUrl :: ArticlesList -> String
otherUrl (ArticlesList {full, tagged}) = absoluteLink $
  (if full then id else (</> "all.html")) $ maybe "" id tagged

pageTitle :: (MonadReader Blog m) => ArticlesList -> m Text
pageTitle (ArticlesList {full, tagged}) = title (full, tagged) <$> Blog.get wording
  where
    title (True, Nothing) = render "allPage" []
    title (True, Just tag) = render "allTaggedPage" [("tag", pack tag)]
    title (False, Nothing) = render "latestPage" []
    title (False, Just tag) = render "latestTaggedPage" [("tag", pack tag)]