mateamt/src/Control/Product.hs

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{-# LANGUAGE OverloadedStrings #-}
module Control.Product where
import Servant
import Control.Monad (void)
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import Control.Monad.Reader (asks)
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import Data.Maybe (fromMaybe)
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-- internal imports
import Types
import Model
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productNew
:: Maybe (Int, AuthMethod)
-> ProductSubmit
-> MateHandler Int
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productNew (Just _) bevsub = do
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conn <- asks rsConnection
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bevid <- insertProduct bevsub conn
void $ insertNewEmptyAmount bevid bevsub conn
return bevid
productNew Nothing _ =
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throwError err401
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productOverview
:: Int
-> MateHandler ProductOverview
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productOverview pid = do
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conn <- asks rsConnection
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productOverviewSelectSingle pid conn
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productStockRefill
:: Maybe (Int, AuthMethod)
-> [AmountRefill]
-> MateHandler ()
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productStockRefill (Just _) amorefs =
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if all ((>= 0) . amountRefillAmount) amorefs
then do
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conn <- asks rsConnection
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void $ manualProductAmountRefill amorefs conn
else
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throwError $ err400
{ errBody = "Amounts less than 0 are not acceptable."
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}
productStockRefill Nothing _ =
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throwError $ err401
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{ errBody = "No Authentication present."
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}
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productStockUpdate
:: Maybe (Int, AuthMethod)
-> [AmountUpdate]
-> MateHandler ()
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productStockUpdate (Just (_, method)) amoups =
if method `elem` [PrimaryPass, ChallengeResponse]
then
if all ((>= 0) . amountUpdateRealAmount) amoups
then do
conn <- asks rsConnection
void $ manualProductAmountUpdate amoups conn
else
throwError $ err400
{ errBody = "Amounts less than 0 are not acceptable."
}
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else
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throwError $ err401
{ errBody = "Wrong Authentication present."
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}
productStockUpdate Nothing _ =
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throwError $ err401
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{ errBody = "No Authentication present."
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}
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productList
:: Maybe ProductRefine
-> MateHandler [ProductOverview]
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productList mrefine = do
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conn <- asks rsConnection
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productOverviewSelect (fromMaybe AvailableProducts mrefine) conn
productShortList
:: Maybe ProductRefine
-> MateHandler [ProductShortOverview]
productShortList mrefine = do
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conn <- asks rsConnection
productShortOverviewSelect (fromMaybe AvailableProducts mrefine) conn