{-# LANGUAGE Arrows, NoMonomorphismRestriction #-}
import ShadowLibrary.Core

import Text.XML.HXT.Core
import Text.XML.HXT.XPath
-- import Text.XML.HXT.Curl
import Data.List
import Data.List.Utils (replace)

import Text.Regex.Posix
import Text.Printf



extractRecords = extractLinksWithText "//a[@class='year-anchor ']"  -- pary adres-tytuł
                 >>> second (arr $ replace "\r\n            " " ") -- czyścimy drugi element pary, czyli tytuł z niepotrzebnych białych znaków
                --  >>> first (arr ((++"f") . init))  -- modyfikujemy pierwszy element pary, czyli adres URL
                 >>> first (extractLinksWithText "//a[@class='pdf-exist'][contains(@href,'.pdf')]") -- pobieramy stronę z adresu URL i wyciągamy linki z tej strony pasujące do wyrażenia XPathowego
                 -- ostatecznie wyjdą trójki ((adres URL, tytuł artykułu), tytuł rocznika)

-- extractRecords2 = extractLinksWithText "//a[@class='year-anchor']"  -- pary adres-tytuł
--                  >>> second (arr $ replace "\r\n            " " ") -- czyścimy drugi element pary, czyli tytuł z niepotrzebnych białych znaków
--                 --  >>> first (arr ((++"f") . init))  -- modyfikujemy pierwszy element pary, czyli adres URL
--                  >>> first (extractLinksWithText "//a[ends-with(@href,'.pdf')]") -- pobieramy stronę z adresu URL i wyciągamy linki z tej strony pasujące do wyrażenia XPathowego
--                  -- ostatecznie wyjdą trójki ((adres URL, tytuł artykułu), tytuł rocznika)

-- ... a tutaj te trójki przerabiamy do docelowej struktury ShadowItem
toShadowItem :: ((String, String), String) -> ShadowItem
toShadowItem ((url, articleTitle), yearlyTitle) =
  (defaultShadowItem url title) {
    originalDate = Just date,
    itype = "periodical",
    format = Just "pdf",
    finalUrl = url
    }
  where title = "Kultura Paryska " ++ yearlyTitle ++ " " ++ (replace "\r\n" "" (replace "\r\n          " "" articleTitle))
        date = yearlyTitle

getDate url =
  case url =~~ "/(19[0-9][0-9]|20[0-9][0-9])/" :: Maybe [[String]] of
    Just [[_, year]] -> year
    otherwise -> error $ "unexpected url: " ++ url


main = do
    let start = "https://kulturaparyska.com/pl/publication/4/year/1946"
    let shadowLibrary = ShadowLibrary {logoUrl=Nothing,
                                       lname="Kultura Paryska",
                                       abbrev="kultParys",
                                       lLevel=0,
                                       webpage=start}
    putStrLn "Program started"
    extractItemsStartingFromUrl shadowLibrary start (extractRecords >>> arr toShadowItem)
    
    -- First time using haskell and for loop in haskell is hard
    
    putStrLn "New link"
    let start2 = "https://kulturaparyska.com/pl/publication/1/year/1946"
    extractItemsStartingFromUrl shadowLibrary start2 (extractRecords >>> arr toShadowItem)

    putStrLn "New link"
    let start2 = "https://kulturaparyska.com/pl/publication/2/year/1946"
    extractItemsStartingFromUrl shadowLibrary start2 (extractRecords >>> arr toShadowItem)

    putStrLn "New link"
    let start2 = "https://kulturaparyska.com/pl/publication/3/year/1946"
    extractItemsStartingFromUrl shadowLibrary start2 (extractRecords >>> arr toShadowItem)

    putStrLn "New link"
    let start2 = "https://kulturaparyska.com/pl/publication/5/year/1946"
    extractItemsStartingFromUrl shadowLibrary start2 (extractRecords >>> arr toShadowItem)

    putStrLn "New link"
    let start2 = "https://kulturaparyska.com/pl/publication/6/year/1946"
    extractItemsStartingFromUrl shadowLibrary start2 (extractRecords >>> arr toShadowItem)

    putStrLn "New link"
    let start2 = "https://kulturaparyska.com/pl/publication/7/year/1946"
    extractItemsStartingFromUrl shadowLibrary start2 (extractRecords >>> arr toShadowItem)

    putStrLn "New link"
    let start2 = "https://kulturaparyska.com/pl/publication/8/year/1946"
    extractItemsStartingFromUrl shadowLibrary start2 (extractRecords >>> arr toShadowItem)

    putStrLn "New link"
    let start2 = "https://kulturaparyska.com/pl/publication/9/year/1946"
    extractItemsStartingFromUrl shadowLibrary start2 (extractRecords >>> arr toShadowItem)

    putStrLn "New link"
    let start2 = "https://kulturaparyska.com/pl/publication/10/year/1946"
    extractItemsStartingFromUrl shadowLibrary start2 (extractRecords >>> arr toShadowItem)

    putStrLn "New link"
    let start2 = "https://kulturaparyska.com/pl/publication/11/year/1946"
    extractItemsStartingFromUrl shadowLibrary start2 (extractRecords >>> arr toShadowItem)