mateamt/src/Model/Product.hs

288 lines
6.9 KiB
Haskell

{-# LANGUAGE DeriveGeneric #-}
{-# LANGUAGE OverloadedStrings #-}
module Model.Product where
import Servant.Server
import Data.Text as T hiding (head, foldl)
import Data.Time.Calendar (Day)
import Data.Profunctor.Product (p10)
import Data.Aeson
import Data.Aeson.Types
import Data.Int (Int64)
import Control.Monad (when)
import Control.Monad.IO.Class (liftIO)
import Control.Monad.Error.Class (throwError)
import Control.Arrow ((<<<))
import qualified Database.PostgreSQL.Simple as PGS
import GHC.Generics
import Opaleye as O
import Opaleye.Constant as C
-- internal imports
import Types
initProduct :: PGS.Query
initProduct = mconcat
[ "create table if not exists \"product\" ("
, "product_id serial primary key,"
, "product_ident varchar(128) not null,"
-- , "product_price integer not null,"
-- , "product_amount integer not null,"
-- , "product_vanish integer not null,"
, "product_ml integer not null,"
, "product_avatar integer,"
, "product_supplier integer,"
, "product_max_amount integer not null,"
, "product_total_bought integer not null,"
, "product_amount_per_crate integer not null,"
, "product_price_per_crate integer,"
, "product_art_nr varchar(128)"
, ")"
]
productTable :: Table
( Maybe (Field SqlInt4)
, Field SqlText
-- , Field SqlInt4
-- , Field SqlInt4
-- , Field SqlInt4
, Field SqlInt4
, FieldNullable SqlInt4
, FieldNullable SqlInt4
, Field SqlInt4
, Field SqlInt4
, Field SqlInt4
, FieldNullable SqlInt4
, FieldNullable SqlText
)
( Field SqlInt4
, Field SqlText
-- , Field SqlInt4
-- , Field SqlInt4
-- , Field SqlInt4
, Field SqlInt4
, FieldNullable SqlInt4
, FieldNullable SqlInt4
, Field SqlInt4
, Field SqlInt4
, Field SqlInt4
, FieldNullable SqlInt4
, FieldNullable SqlText
)
productTable = table "product" (
p10
( tableField "product_id"
, tableField "product_ident"
-- , tableField "product_price"
-- , tableField "product_amount"
-- , tableField "product_vanish"
, tableField "product_ml"
, tableField "product_avatar"
, tableField "product_supplier"
, tableField "product_max_amount"
, tableField "product_total_bought"
, tableField "product_amount_per_crate"
, tableField "product_price_per_crate"
, tableField "product_art_nr"
)
)
productSelect
:: PGS.Connection
-> MateHandler [Product]
productSelect conn = do
bevs <- liftIO $ runSelect conn
( keepWhen (\_ -> C.constant True) <<< queryTable productTable
) :: MateHandler
[ ( Int
, T.Text
-- , Int
-- , Int
-- , Int
, Int
, Maybe Int
, Maybe Int
, Int
, Int
, Int
, Maybe Int
, Maybe T.Text
)
]
mapM
(\(i1, i2, {-i3, i4, i5,-} i6, i7, i8, i9, i10, i11, i12, i13) -> return $
Product i1 i2 {-i3 i4 i5-} i6 i7 i8 i9 i10 i11 i12 i13
)
bevs
-- getProductPrice
-- :: PurchaseDetail
-- -> PGS.Connection
-- -> MateHandler Int
-- getProductPrice (PurchaseDetail bid amount) conn = do
-- when (amount < 0) (
-- throwError $ err406
-- { errBody = "Amounts less or equal zero are not acceptable"
-- }
-- )
-- bevs <- liftIO $ runSelect conn
-- ( keepWhen
-- (\(id_, _, _, _, _, _, _, _, _, _, _) -> id_ .== C.constant bid) <<<
-- queryTable productTable
-- ) :: MateHandler
-- [ ( Int
-- , T.Text
-- -- , Int
-- -- , Int
-- , Int
-- , Int
-- , Maybe Int
-- , Maybe Int
-- , Int
-- , Int
-- , Int
-- , Maybe Int
-- , Maybe T.Text
-- )
-- ]
-- (amount *) <$> head <$> mapM
-- (\(i1, i2, {-i3, i4,-} i5, i6, i7, i8, i9, i10, i11, i12, i13) -> return $
-- i3
-- )
-- bevs
-- checkProductAvailability
-- :: PGS.Connection
-- -> PurchaseDetail
-- -> MateHandler (Maybe Int) -- | returns maybe missing amount
-- checkProductAvailability conn (PurchaseDetail bid amount) = do
-- when (amount <= 0) $
-- throwError $ err406
-- { errBody = "Amounts less or equal zero are not acceptable"
-- }
-- bevs <- liftIO $ runSelect conn
-- ( keepWhen
-- (\(id_, _, _, _, _, _, _, _, _, _, _) -> id_ .== C.constant bid) <<<
-- queryTable productTable
-- ) :: MateHandler
-- [ ( Int
-- , T.Text
-- , Int
-- -- , Int
-- -- , Int
-- , Int
-- , Maybe Int
-- , Maybe Int
-- , Int
-- , Int
-- , Int
-- , Maybe Int
-- , Maybe T.Text
-- )
-- ]
-- realamount <- head <$> mapM
-- (\(i1, i2, i3, {-i4, i5,-} i6, i7, i8, i9, i10, i11, i12, i13) -> return $
-- i4
-- )
-- bevs
-- if realamount < amount
-- then return (Just (amount - realamount))
-- else return Nothing
insertProduct
:: ProductSubmit
-> Insert [Int]
insertProduct (ProductSubmit ident price ml ava sup max apc ppc artnr) = Insert
{ iTable = productTable
, iRows =
[
( C.constant (Nothing :: Maybe Int)
, C.constant ident
-- , C.constant price
-- , C.constant (0 :: Int)
-- , C.constant (0 :: Int)
, C.constant ml
, C.constant ava
, C.constant sup
, C.constant max
, C.constant (0 :: Int)
, C.constant apc
, C.constant ppc
, C.constant artnr
)
]
, iReturning = rReturning (\(id, _, _, _, _, _, _, _, _, _) -> id)
, iOnConflict = Nothing
}
-- updateProduct
-- :: Int
-- -> ProductSubmit
-- -> Update Int64
-- updateProduct sid (ProductSubmit ident price ml ava sup max apc ppc artnr) = Update
-- { uTable = productTable
-- , uUpdateWith = updateEasy (\(id_, _, _, amo, van, _, _, _, _, tot, _, _, _) ->
-- ( id_
-- , C.constant ident
-- , C.constant price
-- , amo
-- , van
-- , C.constant ml
-- , C.constant ava
-- , C.constant sup
-- , C.constant max
-- , tot
-- , C.constant apc
-- , C.constant ppc
-- , C.constant artnr
-- )
-- )
-- , uWhere =
-- (\(id_, _, _, _, _, _, _, _, _, _, _, _, _) ->
-- id_ .== C.constant sid
-- )
-- , uReturning = rCount
-- }
-- reduceProductAmount
-- :: PurchaseDetail
-- -> Update Int64
-- reduceProductAmount (PurchaseDetail pid amount) = Update
-- { uTable = productTable
-- , uUpdateWith = updateEasy
-- (\(id_, ident, price, amo, van, ml, ava, sup, max, tot, apc, ppc, artnr) ->
-- ( id_
-- , ident
-- , price
-- , amo - C.constant amount
-- , van
-- , ml
-- , ava
-- , sup
-- , max
-- , tot + C.constant amount
-- , apc
-- , ppc
-- , artnr
-- )
-- )
-- , uWhere =
-- (\(id_, _, _, _, _, _, _, _, _, _, _, _, _) ->
-- id_ .== C.constant pid
-- )
-- , uReturning = rCount
-- }