47 lines
1.5 KiB
Haskell
47 lines
1.5 KiB
Haskell
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{-|
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Module : Command.All
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Description : Generate podcast for all audiobooks
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Copyright : (c) Raffaele Mignone 2021
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License : GPL-3
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Maintainer : git@norangeb.it
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This module exposes the command that generates podcast feeds for all the
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audiobooks in Ad Alta Voce library.
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-}
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module Command.All(generateAll) where
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import Control.Monad ( join )
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import Data.Maybe ( catMaybes )
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import Text.HTML.Scalpel ( scrapeURL, URL )
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import Command.Single ( single )
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import Scraper.Playlist
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( playlistPageNumbersScraper, playlistsUrlScraper )
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baseUrl = "https://www.raiplayradio.it"
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playlistBaseUrl = "https://www.raiplayradio.it/programmi/adaltavoce/archivio/audiolibri/tutte/"
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scrapeAudiobooksUrl :: IO (Maybe [URL])
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scrapeAudiobooksUrl = do
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pageNumbers <- scrapeURL playlistBaseUrl playlistPageNumbersScraper
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case scrapePlaylistPages pageNumbers of
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Nothing -> return Nothing
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Just urls -> Just <$> urls
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scrapePlaylistPages :: Maybe [String] -> Maybe (IO [URL])
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scrapePlaylistPages pageNumbers = do
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pageNumbers' <- pageNumbers
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let playlistUrls = map (playlistBaseUrl ++) pageNumbers'
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audiobookUrls = mapM (`scrapeURL` playlistsUrlScraper) playlistUrls
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flatAudiobookUrls = join . catMaybes <$> audiobookUrls
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return $ map (baseUrl ++) <$> flatAudiobookUrls
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generateAll :: String -> IO ()
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generateAll outdir = do
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urls <- scrapeAudiobooksUrl
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case urls of
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Nothing -> putStrLn "Error"
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Just urls' -> do
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mapM_ (`single` outdir) urls'
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putStrLn "All done.\nEnjoy your books!"
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