diff options
Diffstat (limited to 'src/client/elm/Model')
-rw-r--r-- | src/client/elm/Model/Payer.elm | 122 |
1 files changed, 0 insertions, 122 deletions
diff --git a/src/client/elm/Model/Payer.elm b/src/client/elm/Model/Payer.elm deleted file mode 100644 index 9ae1dfa..0000000 --- a/src/client/elm/Model/Payer.elm +++ /dev/null @@ -1,122 +0,0 @@ -module Model.Payer - ( Payers - , Payer - , ExceedingPayer - , getOrderedExceedingPayers - ) where - -import Json.Decode as Json exposing (..) -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 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 - in case incomeDefinedForAll (Dict.keys users) incomes of - Just since -> - let postPaymentPayers = mapValues (getPostPaymentPayer currentTime since) payers - mbMaxRatio = - postPaymentPayers - |> Dict.toList - |> List.map (.ratio << snd) - |> List.maximum - in case mbMaxRatio of - Just maxRatio -> - postPaymentPayers - |> mapValues (getFinalDiff maxRatio) - |> Dict.toList - |> exceedingPayersFromAmounts - Nothing -> - exceedingPayersOnPreIncome - Nothing -> - exceedingPayersOnPreIncome - -getPayers : Time -> Users -> Incomes -> Payments -> Payers -getPayers currentTime users incomes payments = - let incomesDefined = incomeDefinedForAll (Dict.keys users) incomes - in Dict.keys users - |> List.map (\userId -> - ( userId - , { preIncomePaymentSum = - totalPayments - (\p -> (Date.toTime p.creation) < (Maybe.withDefault currentTime incomesDefined)) - userId - payments - , postIncomePaymentSum = - totalPayments - (\p -> - case incomesDefined of - Nothing -> False - Just t -> (Date.toTime p.creation) >= 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 snd <| userAmounts - in case mbMinAmount of - Nothing -> - [] - Just minAmount -> - userAmounts - |> List.map (\userAmount -> - { userId = fst userAmount - , amount = snd userAmount - minAmount - } - ) - |> List.filter (\payer -> payer.amount > 0) - -type alias PostPaymentPayer = - { preIncomePaymentSum : Int - , cumulativeIncome : Int - , ratio : Float - } - -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 |