functional script

cout-recette.hs

@@ -1,34 +1,50 @@
 #! /usr/bin/env runhaskell
 
-type Ingredient = (String, Double, Double)
+data Ingredient = Ingredient { ingredientName :: String
+                             , unit_cost :: Double
+                             }deriving (Show)
 
-type Recette = ( String, [Ingredient], Double, Double)
+data UsedIngredient = UsedIngredient { ingredient :: Ingredient, quantityUsed :: Double }deriving (Show)
 
-ingredientsLessive :: [Ingredient]
-ingredientsLessive = ( "Lessive"
-                     ,   [ ("Eau", 0.003, 2.5)
-                         , ("Savon de Marseille", 3.36, 0.1)
-                         , ("Bicarbonate de soude", 3.81, 0.016)
-                         , ("Vinaigre blanc", 0.36, 0.03)
-                         ]
-                     ,   2.5
-                     ,   30
-                     )
+data Recipe = Recipe { recipeName :: String
+                     , billOfMaterial :: [ UsedIngredient ]
+                     , finalQuantity :: Double
+                     , useNumber :: Double
+                     }deriving (Show)
 
-quantiteLessive = 2.5
-nombreUtilisations = 30
+recipeCost :: Recipe -> Double
+recipeCost (Recipe _ bom _ _) = sum . map ingredientCost $ bom
 
-prixTotal ingredientsLessive = sum . map (\ (_, x, y) -> x * y) $ ingredientsLessive
+ingredientCost :: UsedIngredient -> Double
+ingredientCost (UsedIngredient (Ingredient _ uCost) qtt) = uCost * qtt
 
 prixLitre prixTotal quantiteLessive = prixTotal / quantiteLessive
 
 prixUtilisation prixTotal quantiteLessive = prixTotal / nombreUtilisations
 
+eau = Ingredient "Eau" 0.003
+savonMarseille = Ingredient "Savon de Marseille" 3.36
+bicarbonate = Ingredient "Bicarbonate de soude" 3.81
+vinaigreBlanc = Ingredient "Vinaigre blanc" 0.36
+
+lessive :: Recipe
+lessive = Recipe "Lessive"
+                 [ UsedIngredient eau 2.5
+                 , UsedIngredient savonMarseille 0.1
+                 , UsedIngredient bicarbonate 0.016
+                 , UsedIngredient vinaigreBlanc 0.03
+                 ]
+                 2.5
+                 30
+
+quantiteLessive = 2.5
+nombreUtilisations = 30
+
 main = do
     putStrLn "Calcul du coût des recettes\n"
     putStrLn "* Lessive :"
-    print ingredientsLessive
-    putStrLn $ "  * Prix Total = " ++ show prixTotal ++ "€"
-    putStrLn $ "  * Prix au litre = " ++ show prixLitre ++ "€"
-    putStrLn $ "  * Prix par utilisation = " ++ show prixUtilisation ++ "€"
+    print lessive
+    putStrLn $ "  * Prix Total = " ++ show (recipeCost lessive) ++ "€"
+--    putStrLn $ "  * Prix au litre = " ++ show prixLitre ++ "€"
+--    putStrLn $ "  * Prix par utilisation = " ++ show prixUtilisation ++ "€"