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module View.Payment.Pages
( widget
, PagesIn(..)
, PagesOut(..)
) where
import qualified Data.Text as T
import Reflex.Dom (Dynamic, Event, MonadWidget)
import qualified Reflex.Dom as R
import Common.Model (Frequency (..), Payment (..))
import Component (ButtonIn (..), ButtonOut (..))
import qualified Component as Component
import qualified Icon
import qualified View.Payment.Constants as Constants
data PagesIn = PagesIn
{ _pagesIn_payments :: [Payment]
}
data PagesOut t = PagesOut
{ _pagesOut_currentPage :: Dynamic t Int
}
widget :: forall t m. MonadWidget t m => PagesIn -> m (PagesOut t)
widget pagesIn = do
R.divClass "pages" $ do
rec
currentPage <- R.holdDyn 1 . R.leftmost $ [ firstPageClic, previousPageClic, pageClic, nextPageClic, lastPageClic ]
firstPageClic <- pageButton (R.constDyn 0) (R.constDyn 1) Icon.doubleLeftBar
previousPageClic <- pageButton (R.constDyn 0) (fmap (\x -> max (x - 1) 1) currentPage) Icon.doubleLeft
pageClic <- pageEvent <$> (R.simpleList (fmap (range maxPage) currentPage) $ \p ->
pageButton currentPage p (R.dynText $ fmap (T.pack . show) p))
nextPageClic <- pageButton (R.constDyn 0) (fmap (\x -> min (x + 1) maxPage) currentPage) Icon.doubleRight
lastPageClic <- pageButton (R.constDyn 0) (R.constDyn maxPage) Icon.doubleRightBar
return $ PagesOut
{ _pagesOut_currentPage = currentPage
}
where paymentCount = length . filter ((==) Punctual . _payment_frequency) . _pagesIn_payments $ pagesIn
maxPage = ceiling $ toRational paymentCount / toRational Constants.paymentsPerPage
pageEvent = R.switchPromptlyDyn . fmap R.leftmost
range :: Int -> Int -> [Int]
range maxPage currentPage = [start..end]
where sidePages = 2
start = max 1 (currentPage - sidePages)
end = min maxPage (start + sidePages * 2)
pageButton :: forall t m. MonadWidget t m => Dynamic t Int -> Dynamic t Int -> m () -> m (Event t Int)
pageButton currentPage page content = do
clic <- _buttonOut_clic <$> (Component.button $ ButtonIn
{ _buttonIn_class = do
cp <- currentPage
p <- page
if cp == p then "page current" else "page"
, _buttonIn_content = content
, _buttonIn_waiting = R.never
})
return . fmap fst $ R.attach (R.current page) clic
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