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{-# LANGUAGE ApplicativeDo #-}
module Handler.Common
( inventoryListing
, itemForm
, referenceListing
, referenceForm
, kinds
, InventoryState(..)
, ReferenceState(..)
, FormState(..)
, HasFormState(..)
, stockSort, referenceSort
) where
import Import
import Data.Unique
import qualified Data.Text as Text
import Data.Set (Set)
import qualified Data.Set as Set
import Control.Lens
import Handler.Common.Types
dayFormat :: Day -> String
dayFormat = formatTime defaultTimeLocale "%e. %b %y"
itemForm :: Maybe Item -- ^ Update existing item or insert new?
-> Html -> MForm Handler (FormResult (WithType Item), Widget)
itemForm proto identView = do
today <- utctDay <$> liftIO getCurrentTime
t <- lift . runDB $ maybe (return Nothing) (fmap (Just . kindType) . getType) proto
(kindRes, kindWidget) <- kindField $ itemKind <$> proto
(typeRes, typeWidget) <- typeField $ t
(boughtRes, boughtWidget) <- dayForm (maybe (Just $ Just today) Just $ fmap itemBought proto) "Unknown"
(expiresRes, expiresWidget) <- dayForm (fmap itemExpires proto) "Never"
(openedRes, openedWidget) <- dayForm (fmap itemOpened proto) "Never"
let itemRes = do
itemKind <- kindRes
itemBought <- boughtRes
itemExpires <- expiresRes
itemOpened <- openedRes
t <- typeRes
return $ Item{ itemNormKind = normalizeKind itemKind, ..} `WithType` t
return . (itemRes, ) $
[whamlet|
$newline never
#{identView}
<div .td>^{kindWidget}
<div .td>^{typeWidget}
<div .td>^{boughtWidget}
<div .td>^{expiresWidget}
<div .td>^{openedWidget}
|]
where
dayForm :: Maybe (Maybe Day) -> String -> MForm Handler (FormResult (Maybe Day), Widget)
dayForm proto label = do
today <- utctDay <$> liftIO getCurrentTime
checkboxId <- ("check" <>) . show . hashUnique <$> liftIO newUnique
(fmap (fromMaybe False) -> isNothingRes, isNothingView) <-
mopt checkBoxField ("" { fsId = Just $ Text.pack checkboxId }) . Just . Just . fromMaybe True $ fmap isNothing proto
(dayRes, dayView) <-
mreq dayField "" . Just . fromMaybe today $ join proto
let res = (bool Just (const Nothing) <$> isNothingRes) <*> dayRes
return . (res, ) $ do
[whamlet|
$newline never
<div .table>
<div .tr>
<label for=#{checkboxId} .checkbox .td>
^{fvInput isNothingView}
<span>
#{label}
<div .tr>
<div .td .dayInput>^{fvInput dayView}
|]
inventoryListing :: InventoryState -> Widget
inventoryListing InventoryState{ invFormState = formState, ..} = $(widgetFile "inventoryListing")
referenceForm :: Maybe Reference -- ^ Update existing item or insert new?
-> Html -> MForm Handler (FormResult (WithType Reference), Widget)
referenceForm proto identView = do
t <- lift . runDB $ maybe (return Nothing) (fmap (Just . kindType) . getType) proto
(kindRes, kindWidget) <- kindField $ referenceKind <$> proto
(typeRes, typeWidget) <- typeField $ t
let referenceRes = do
referenceKind <- kindRes
t <- typeRes
return $ Reference{ referenceNormKind = normalizeKind referenceKind, .. } `WithType` t
return . (referenceRes, ) $
[whamlet|
$newline never
#{identView}
<div .td>^{kindWidget}
<div .td>^{typeWidget}
|]
referenceListing :: ReferenceState -> Widget
referenceListing ReferenceState{ refFormState = formState, ..} = $(widgetFile "referenceListing")
kindField :: Maybe Text -> MForm Handler (FormResult Text, Widget)
kindField proto = do
optionId <- ("options" <>) . tshow . hashUnique <$> liftIO newUnique
let
attrs = [ ("list", optionId)
, ("autocomplete", "off")
]
(kindRes, kindView) <- mreq textField ("" { fsAttrs = attrs }) proto
options <- lift kinds
return . (kindRes, ) $
[whamlet|
$newline never
^{fvInput kindView}
<datalist ##{optionId}>
$forall opt <- options
<option value=#{opt}>
|]
typeField :: Maybe Text -> MForm Handler (FormResult Text, Widget)
typeField proto = do
optionId <- ("options" <>) . tshow . hashUnique <$> liftIO newUnique
let
attrs = [ ("list", optionId)
, ("autocomplete", "off")
]
(typeRes, typeView) <- mreq textField ("" { fsAttrs = attrs }) proto
(Set.fromList . map (kindType . entityVal) -> options) <- lift . runDB $ selectList [] []
return . (typeRes, ) $
[whamlet|
$newline never
^{fvInput typeView}
<datalist ##{optionId}>
$forall opt <- Set.toList options
<option value=#{opt}>
|]
kinds :: Handler [Text]
kinds = do
stock <- runDB $ selectList [] []
reference <- runDB $ selectList [] []
return $ concat
[ [ itemKind | Entity _ Item{..} <- stock ]
, [ referenceKind | Entity _ Reference{..} <- reference ]
]
type Sort a = a -> a
stockSort :: Sort [WithType (Entity Item)]
stockSort = concat . map (sortOn $ entityVal . typedVal) . sortGroups . group
where
group = groupBy ((==) `on` valType) . sortOn valType
sortGroups = sortOn (fmap minimum . fromNullable . map (entityVal . typedVal))
referenceSort :: Sort [WithType (Entity Reference)]
referenceSort = sortBy referenceOrdering
where
referenceOrdering (Entity _ refA `WithType` refAType) (Entity _ refB `WithType` refBType) = compare refAType refBType <> compare refA refB
|
