Merge branch 'with-ghcjs' into 'master'

Use Haskell on the frontend

See merge request guyonvarch/shared-cost!2

1 files changed, 85 insertions, 0 deletions

diff --git a/client/src/View/Statistics/Statistics.hs b/client/src/View/Statistics/Statistics.hs
new file mode 100644
index 0000000..d931b2b
--- /dev/null
+++ b/client/src/View/Statistics/Statistics.hs
@@ -0,0 +1,85 @@
+module View.Statistics.Statistics
+  ( view
+  , In(..)
+  ) where
+
+import           Control.Monad         (void)
+import           Data.Map              (Map)
+import qualified Data.Map              as M
+import qualified Data.Text             as T
+import           Data.Time.Calendar    (Day)
+import qualified Data.Time.Calendar    as Calendar
+import           Loadable              (Loadable)
+import qualified Loadable
+import           Reflex.Dom            (Dynamic, MonadWidget)
+import qualified Reflex.Dom            as R
+import qualified Util.Ajax             as AjaxUtil
+import qualified View.Statistics.Chart as Chart
+
+import           Common.Model          (Category (..), Currency, Income,
+                                        MonthStats (..), Stats, User (..))
+import qualified Common.Msg            as Msg
+import qualified Common.View.Format    as Format
+
+data In = In
+  { _in_currency    :: Currency
+  }
+
+view :: forall t m. MonadWidget t m => In -> m ()
+view input = do
+
+  users <- AjaxUtil.getNow "api/users"
+  categories <- AjaxUtil.getNow "api/allCategories"
+  statistics <- AjaxUtil.getNow "api/statistics"
+
+  let loadable = (\u c s -> (,,) <$> u <*> c <*> s) <$> users <*> categories <*> statistics
+
+  R.divClass "withMargin" $
+    R.divClass "titleButton" $
+      R.el "h1" $
+        R.text $ Msg.get Msg.Statistics_Title
+
+  void . R.dyn . R.ffor loadable . Loadable.viewHideValueWhileLoading $
+    stats (_in_currency input)
+
+stats :: forall t m. MonadWidget t m => Currency -> ([User], [Category], Stats) -> m ()
+stats currency (users, categories, stats) =
+  Chart.view $ Chart.In
+    { Chart._in_title = Msg.get (Msg.Statistics_ByMonthsAndMean averagePayment averageIncome)
+    , Chart._in_labels = map (Format.monthAndYear . _monthStats_start) stats
+    , Chart._in_datasets = totalIncomeDataset : totalPaymentDataset : (map categoryDataset categories)
+    }
+
+  where
+    averageIncome =
+      Format.price currency $ sum  totalIncomes `div` length stats
+
+    totalIncomeDataset =
+      Chart.Dataset
+        { Chart._dataset_label = Msg.get Msg.Statistics_TotalIncomes
+        , Chart._dataset_data  = totalIncomes
+        , Chart._dataset_color = "#222222"
+        }
+
+    totalIncomes =
+      map (sum . map snd . M.toList . _monthStats_incomeByUser) stats
+
+    averagePayment =
+      Format.price currency $ sum totalPayments `div` length stats
+
+    totalPaymentDataset =
+      Chart.Dataset
+        { Chart._dataset_label = Msg.get Msg.Statistics_TotalPayments
+        , Chart._dataset_data  = totalPayments
+        , Chart._dataset_color = "#555555"
+        }
+
+    totalPayments =
+      map (sum . map snd . M.toList . _monthStats_paymentsByCategory) stats
+
+    categoryDataset category =
+      Chart.Dataset
+        { Chart._dataset_label = _category_name category
+        , Chart._dataset_data  = map (M.findWithDefault 0 (_category_id category) . _monthStats_paymentsByCategory) stats
+        , Chart._dataset_color = _category_color category
+        }