From 1e47a7754ca38bd1a6c74765d8378caf68ce4619 Mon Sep 17 00:00:00 2001
From: Joris
Date: Sun, 26 Mar 2017 21:10:42 +0200
Subject: Separate client and server watch

---
 src/client/elm/Model/Payer.elm | 138 -----------------------------------------
 1 file changed, 138 deletions(-)
 delete mode 100644 src/client/elm/Model/Payer.elm

(limited to 'src/client/elm/Model/Payer.elm')

diff --git a/src/client/elm/Model/Payer.elm b/src/client/elm/Model/Payer.elm
deleted file mode 100644
index 1663273..0000000
--- a/src/client/elm/Model/Payer.elm
+++ /dev/null
@@ -1,138 +0,0 @@
-module Model.Payer exposing
-  ( Payers
-  , Payer
-  , ExceedingPayer
-  , getOrderedExceedingPayers
-  , useIncomesFrom
-  )
-
-import Dict exposing (..)
-import List
-import Maybe
-import Time exposing (Time)
-import Date
-
-import Model.Payment exposing (Payments, totalPayments)
-import Model.User exposing (Users, UserId, userIdDecoder)
-import Model.Income exposing (..)
-
-import Utils.Dict exposing (mapValues)
-import Utils.Maybe exposing (isJust)
-
-type alias Payers = Dict UserId Payer
-
-type alias Payer =
-  { preIncomePaymentSum : Int
-  , postIncomePaymentSum : Int
-  , incomes : List Income
-  }
-
-type alias PostPaymentPayer =
-  { preIncomePaymentSum : Int
-  , cumulativeIncome : Int
-  , ratio : Float
-  }
-
-type alias ExceedingPayer =
-  { userId : UserId
-  , amount : Int
-  }
-
-getOrderedExceedingPayers : Time -> Users -> Incomes -> Payments -> List ExceedingPayer
-getOrderedExceedingPayers currentTime users incomes payments =
-  let payers = getPayers currentTime users incomes payments
-      exceedingPayersOnPreIncome =
-        payers
-          |> mapValues .preIncomePaymentSum
-          |> Dict.toList
-          |> exceedingPayersFromAmounts
-      mbSince = useIncomesFrom users incomes payments
-  in  case mbSince of
-        Just since ->
-          let postPaymentPayers = mapValues (getPostPaymentPayer currentTime since) payers
-              mbMaxRatio =
-                postPaymentPayers
-                  |> Dict.toList
-                  |> List.map (.ratio << Tuple.second)
-                  |> List.maximum
-          in  case mbMaxRatio of
-                Just maxRatio ->
-                  postPaymentPayers
-                    |> mapValues (getFinalDiff maxRatio)
-                    |> Dict.toList
-                    |> exceedingPayersFromAmounts
-                Nothing ->
-                  exceedingPayersOnPreIncome
-        _ ->
-          exceedingPayersOnPreIncome
-
-useIncomesFrom : Users -> Incomes -> Payments -> Maybe Time
-useIncomesFrom users incomes payments =
-  let firstPaymentTime =
-        payments
-          |> List.map (Date.toTime << .date)
-          |> List.sort
-          |> List.head
-      mbIncomeTime = incomeDefinedForAll (Dict.keys users) incomes
-  in  case (firstPaymentTime, mbIncomeTime) of
-        (Just paymentTime, Just incomeTime) ->
-          Just (max paymentTime incomeTime)
-        _ ->
-          Nothing
-
-getPayers : Time -> Users -> Incomes -> Payments -> Payers
-getPayers currentTime users incomes payments =
-  let userIds = Dict.keys users
-      incomesDefined = incomeDefinedForAll userIds incomes
-  in  userIds
-        |> List.map (\userId ->
-             ( userId
-             , { preIncomePaymentSum =
-                   totalPayments
-                     (\p -> (Date.toTime p.date) < (Maybe.withDefault currentTime incomesDefined))
-                     userId
-                     payments
-               , postIncomePaymentSum =
-                   totalPayments
-                     (\p ->
-                       case incomesDefined of
-                         Nothing -> False
-                         Just t -> (Date.toTime p.date) >= t
-                     )
-                     userId
-                     payments
-               , incomes = List.filter ((==) userId << .userId) (Dict.values incomes)
-               }
-             )
-           )
-        |> Dict.fromList
-
-exceedingPayersFromAmounts : List (UserId, Int) -> List ExceedingPayer
-exceedingPayersFromAmounts userAmounts =
-  let mbMinAmount = List.minimum << List.map Tuple.second <| userAmounts
-  in  case mbMinAmount of
-        Nothing ->
-          []
-        Just minAmount ->
-          userAmounts
-            |> List.map (\userAmount ->
-                 { userId = Tuple.first userAmount
-                 , amount = Tuple.second userAmount - minAmount
-                 }
-               )
-            |> List.filter (\payer -> payer.amount > 0)
-
-getPostPaymentPayer : Time -> Time -> Payer -> PostPaymentPayer
-getPostPaymentPayer currentTime since payer =
-  let cumulativeIncome = cumulativeIncomesSince currentTime since payer.incomes
-  in  { preIncomePaymentSum = payer.preIncomePaymentSum
-      , cumulativeIncome = cumulativeIncome
-      , ratio = toFloat payer.postIncomePaymentSum / toFloat cumulativeIncome
-      }
-
-getFinalDiff : Float -> PostPaymentPayer -> Int
-getFinalDiff maxRatio payer =
-  let postIncomeDiff =
-        -1 * (maxRatio - payer.ratio) * toFloat payer.cumulativeIncome
-          |> truncate
-  in  postIncomeDiff + payer.preIncomePaymentSum
-- 
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