From baefda5a902a94cedf84cfcd2ae550267e5d932e Mon Sep 17 00:00:00 2001
From: Joris
Date: Wed, 30 Mar 2016 00:28:55 +0200
Subject: Merge punctual and monthly payments in client model

---
 src/client/elm/Model/Payment.elm | 32 ++++++++++++++++++++++++++++----
 1 file changed, 28 insertions(+), 4 deletions(-)

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

diff --git a/src/client/elm/Model/Payment.elm b/src/client/elm/Model/Payment.elm
index 80579e2..e792c6c 100644
--- a/src/client/elm/Model/Payment.elm
+++ b/src/client/elm/Model/Payment.elm
@@ -3,11 +3,13 @@ module Model.Payment
   , Payments
   , Payment
   , PaymentId
+  , Frequency(..)
   , paymentsDecoder
   , paymentIdDecoder
   , deletePayment
-  , PaymentFrequency(..)
   , totalPayments
+  , punctualPayments
+  , monthlyPayments
   ) where
 
 import Date exposing (..)
@@ -27,33 +29,55 @@ type alias Payment =
   , name : String
   , cost : Int
   , userId : UserId
+  , frequency : Frequency
   }
 
 type alias PaymentId = Int
 
-type PaymentFrequency = Punctual | Monthly
+type Frequency = Punctual | Monthly
 
 paymentsDecoder : Json.Decoder Payments
 paymentsDecoder = Json.list paymentDecoder
 
 paymentDecoder : Json.Decoder Payment
 paymentDecoder =
-  Json.object5 Payment
+  Json.object6 Payment
     ("id" := paymentIdDecoder)
     ("creation" := dateDecoder)
     ("name" := Json.string)
     ("cost" := Json.int)
     ("userId" := userIdDecoder)
+    ("frequency" := frequencyDecoder)
 
 paymentIdDecoder : Json.Decoder PaymentId
 paymentIdDecoder = Json.int
 
+frequencyDecoder : Json.Decoder Frequency
+frequencyDecoder =
+  Json.customDecoder
+    Json.string
+    (\input -> case input of
+      "Punctual" -> Ok Punctual
+      "Monthly" -> Ok Monthly
+      _ -> Err ("Could not deduce Punctual nor Monthly from " ++ input)
+    )
+
 deletePayment : PaymentId -> Payments -> Payments
 deletePayment paymentId = List.filter (((/=) paymentId) << .id)
 
 totalPayments : (Payment -> Bool) -> UserId -> Payments -> Int
 totalPayments paymentFilter userId payments =
   payments
-    |> List.filter (\payment -> paymentFilter payment && payment.userId == userId)
+    |> List.filter (\payment ->
+         paymentFilter payment
+         && payment.userId == userId
+         && payment.frequency == Punctual
+       )
     |> List.map .cost
     |> List.sum
+
+punctualPayments : Payments -> Payments
+punctualPayments = List.filter ((==) Punctual << .frequency)
+
+monthlyPayments : Payments -> Payments
+monthlyPayments = List.filter ((==) Monthly << .frequency)
-- 
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