From 9a95a674fbbf1e64d3ad07922d569c3a1c751cf2 Mon Sep 17 00:00:00 2001
From: Joris
Date: Wed, 5 Apr 2017 17:04:33 +0200
Subject: Show aliments, glycemic index, carbohydrates and glycemic charge

---
 src/Aliment.purs | 13 -------------
 src/Food.purs    | 25 +++++++++++++++++++++++++
 src/Format.purs  | 29 +++++++++++++++++++++++++++++
 src/Page.purs    | 45 ++++++++++++++++++++++++++++++++++++++-------
 4 files changed, 92 insertions(+), 20 deletions(-)
 delete mode 100644 src/Aliment.purs
 create mode 100644 src/Food.purs
 create mode 100644 src/Format.purs

(limited to 'src')

diff --git a/src/Aliment.purs b/src/Aliment.purs
deleted file mode 100644
index e7c4fc8..0000000
--- a/src/Aliment.purs
+++ /dev/null
@@ -1,13 +0,0 @@
-module Aliment where
-
-all :: Array Aliment
-all =
-  [ { name: "Oignon", gi: 15 }
-  , { name: "Olive", gi: 15 }
-  , { name: "Haricot rouge", gi: 35 }
-  ]
-
-type Aliment =
-  { name :: String
-  , gi :: Int
-  }
diff --git a/src/Food.purs b/src/Food.purs
new file mode 100644
index 0000000..b1e3d29
--- /dev/null
+++ b/src/Food.purs
@@ -0,0 +1,25 @@
+module Food
+  ( Aliment
+  , all
+  , glycemicLoad
+  ) where
+
+import Data.Int (toNumber)
+import Prelude
+
+type Aliment =
+  { name :: String
+  , glycemicIndex :: Int
+  , carbohydrates :: Int -- for 100 grams
+  }
+
+glycemicLoad :: Aliment -> Number
+glycemicLoad aliment = toNumber aliment.glycemicIndex * toNumber aliment.carbohydrates / 100.0
+
+all :: Array Aliment
+all =
+  [ { name: "oignon", glycemicIndex: 15, carbohydrates: 9 }
+  , { name: "olive", glycemicIndex: 15, carbohydrates: 6 }
+  , { name: "haricot rouge", glycemicIndex: 35, carbohydrates: 24 }
+  , { name: "haricot blanc", glycemicIndex: 35, carbohydrates: 13 }
+  ]
diff --git a/src/Format.purs b/src/Format.purs
new file mode 100644
index 0000000..22593e5
--- /dev/null
+++ b/src/Format.purs
@@ -0,0 +1,29 @@
+module Format where
+
+import Data.Int (toNumber, fromNumber)
+import Data.Array (replicate)
+import Data.Maybe (fromMaybe)
+import Data.String (length, joinWith)
+import Math (round, trunc, pow)
+
+import Prelude
+
+number :: Int -> Number -> String
+number decimalLength num = formattedIntegerPart <> formattedDecimalPart
+  where
+  formattedIntegerPart =
+    (if decimalLength > 0 then trunc num else round num)
+      # fromNumber
+      # fromMaybe 0
+      # show
+
+  formattedDecimalPart =
+    if decimalLength > 0 then
+      ((num - trunc num) * pow 10.0 (toNumber decimalLength))
+        # round
+        # fromNumber
+        # fromMaybe 0
+        # show
+        # \str -> "," <> (joinWith "" $ replicate (decimalLength - length str) "0") <> str
+    else
+      ""
diff --git a/src/Page.purs b/src/Page.purs
index 83e4d73..76cdf8d 100644
--- a/src/Page.purs
+++ b/src/Page.purs
@@ -1,12 +1,14 @@
 module Page where
 
-import Prelude
 import Data.Maybe (Maybe(..))
 import Halogen as H
 import Halogen.HTML as HH
+import Halogen.HTML.Properties as HP
+import Prelude
 
-import Aliment as Aliment
-import Aliment (Aliment)
+import Food (Aliment)
+import Food as Food
+import Format as Format
 
 type State = Unit
 
@@ -27,19 +29,48 @@ component =
     render state =
       HH.div
         []
-        [ HH.h1 [] [ HH.text "Sucre" ]
+        [ HH.h1 [] [ HH.text "Glycémie" ]
         , HH.ul
-            []
-            (map renderAliment Aliment.all)
+            [ HP.class_ $ HH.ClassName "aliments" ]
+            ([renderTitle] <> (map renderAliment Food.all))
         ]
 
     eval :: Query ~> H.ComponentDSL State Query Message m
     eval = case _ of
       NoOp next -> pure next
 
+renderTitle :: H.ComponentHTML Query
+renderTitle =
+  HH.li
+    [ HP.class_ $ HH.ClassName "title" ]
+    [ HH.div
+        []
+        [ HH.text "Aliment" ]
+    , HH.div
+        []
+        [ HH.text "Index glycémique" ]
+    , HH.div
+        []
+        [ HH.text "Glucides pour 100 g" ]
+    , HH.div
+        []
+        [ HH.text "Charge glycémique" ]
+    ]
+
 renderAliment :: Aliment -> H.ComponentHTML Query
 renderAliment aliment =
   HH.li
     []
-    [ HH.text (aliment.name <> ", index glycémique: " <> (show aliment.gi))
+    [ HH.div
+        []
+        [ HH.text aliment.name ]
+    , HH.div
+        [ HP.class_ $ HH.ClassName "number" ]
+        [ HH.text (show aliment.glycemicIndex) ]
+    , HH.div
+        [ HP.class_ $ HH.ClassName "number" ]
+        [ HH.text (show aliment.carbohydrates) ]
+    , HH.div
+        [ HP.class_ $ HH.ClassName "number" ]
+        [ HH.text (Format.number 2 <<< Food.glycemicLoad $ aliment) ]
     ]
-- 
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