{-# 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 "//section[@id='section-content']//h2/a"  -- pary adres-tytuł
                 >>> second (arr $ replace "\r\n            " " ") -- czyścimy drugi element pary, czyli tytuł z niepotrzebnych białych znaków
                 -- >>> first (arr ((++"tr") . init))  -- modyfikujemy pierwszy element pary, czyli adres URL
                 >>> first (extractLinksWithText "//div[@class='attachment']/a[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)

-- ... 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 = "Teksty Drugie " ++ yearlyTitle ++ " " ++ (replace "\r\n" "" (replace "\r\n          " "" articleTitle))
        date = getDate url

getDate url =
  case url =~~ "/([1-2][0-9][0-9][0-9]|20[0-9][0-9])/" :: Maybe [[String]] of
    Just [[_, year]] -> year
    otherwise -> error $ "unexpected url: " ++ url


main = do
    let start = "http://tekstydrugie.pl/pl/numery-archiwalne/"
    let shadowLibrary = ShadowLibrary {logoUrl=Nothing,
                                       lname="Teksty Drugie",
                                       abbrev="TekDru",
                                       lLevel=0,
                                       webpage=start}
    let start1 = "http://tekstydrugie.pl/pl/numery-archiwalne/1990/"
    let start2 = "http://tekstydrugie.pl/pl/numery-archiwalne/1991/"
    let start3 = "http://tekstydrugie.pl/pl/numery-archiwalne/1992/"
    let start4 = "http://tekstydrugie.pl/pl/numery-archiwalne/1993/"
    let start5 = "http://tekstydrugie.pl/pl/numery-archiwalne/1994/"
    let start6 = "http://tekstydrugie.pl/pl/numery-archiwalne/1995/"
    let start7 = "http://tekstydrugie.pl/pl/numery-archiwalne/1996/"
    let start8 = "http://tekstydrugie.pl/pl/numery-archiwalne/1997/"
    let start9 = "http://tekstydrugie.pl/pl/numery-archiwalne/1998/"
    let start10 = "http://tekstydrugie.pl/pl/numery-archiwalne/1999/"
    let start11 = "http://tekstydrugie.pl/pl/numery-archiwalne/2000/"
    let start12 = "http://tekstydrugie.pl/pl/numery-archiwalne/2001/"
    let start13 = "http://tekstydrugie.pl/pl/numery-archiwalne/2002/"
    let start14 = "http://tekstydrugie.pl/pl/numery-archiwalne/2003/"
    let start15 = "http://tekstydrugie.pl/pl/numery-archiwalne/2004/"
    let start16 = "http://tekstydrugie.pl/pl/numery-archiwalne/2005/"
    let start17 = "http://tekstydrugie.pl/pl/numery-archiwalne/2006/"
    let start18 = "http://tekstydrugie.pl/pl/numery-archiwalne/2007/"
    let start19 = "http://tekstydrugie.pl/pl/numery-archiwalne/2008/"
    let start20 = "http://tekstydrugie.pl/pl/numery-archiwalne/2009/"
    let start21 = "http://tekstydrugie.pl/pl/numery-archiwalne/2010/"
    let start22 = "http://tekstydrugie.pl/pl/numery-archiwalne/2011/"
    let start23 = "http://tekstydrugie.pl/pl/numery-archiwalne/2012/"
    let start24 = "http://tekstydrugie.pl/pl/numery-archiwalne/2013/"
    let start25 = "http://tekstydrugie.pl/pl/numery-archiwalne/2014/"
    let start26 = "http://tekstydrugie.pl/pl/numery-archiwalne/2015/"
    let start27 = "http://tekstydrugie.pl/pl/numery-archiwalne/2016/"
    let start28 = "http://tekstydrugie.pl/pl/numery-archiwalne/2017/"
    let start29 = "http://tekstydrugie.pl/pl/numery-archiwalne/2018/"
    let start30 = "http://tekstydrugie.pl/pl/numery-archiwalne/2019/"
    let start31 = "http://tekstydrugie.pl/pl/numery-archiwalne/2020/"
    let start32 = "http://tekstydrugie.pl/pl/numery-archiwalne/2021/"
    extractItemsStartingFromUrl shadowLibrary start1 (extractRecords >>> arr toShadowItem)
    extractItemsStartingFromUrl shadowLibrary start2 (extractRecords >>> arr toShadowItem)
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