Show tender line items on screen; add "change back" alert

wuttapos/controls/base.py

@@ -34,6 +34,7 @@ class WuttaControl(ft.UserControl):
         super().__init__(*args, **kwargs)
         self.config = config
         self.app = config.get_app()
+        self.enum = self.app.enum
 
     def informed_refresh(self, **kwargs):
         pass

wuttapos/controls/txnitem.py

@@ -55,13 +55,18 @@ class WuttaTxnItem(WuttaControl):
                                         italic=True,
                                         **kw)
 
+        if self.row.row_type == self.enum.POS_ROW_TYPE_SELL:
+            return self.build_item_sell()
+
+        elif self.row.row_type in (self.enum.POS_ROW_TYPE_TENDER,
+                                   self.enum.POS_ROW_TYPE_CHANGE_BACK):
+            return self.build_item_tender()
+
+    def build_item_sell(self):
         quantity = self.app.render_quantity(self.row.quantity)
         pretty_price = self.app.render_currency(self.row.txn_price)
-
         return ft.Row(
             [
-                ft.Row([
-
                 ft.Text(
                     spans=[
                         ft.TextSpan(f"{self.row.description}",
@@ -70,7 +75,6 @@ class WuttaTxnItem(WuttaControl):
                                     style=self.minor_style),
                     ],
                 ),
-                ]),
                 ft.Text(
                     spans=[
                         ft.TextSpan(self.app.render_currency(self.row.sales_total),
@@ -82,8 +86,31 @@ class WuttaTxnItem(WuttaControl):
             alignment=ft.MainAxisAlignment.SPACE_BETWEEN,
         )
 
+    def build_item_tender(self):
+        return ft.Row(
+            [
+                ft.Text(
+                    spans=[
+                        ft.TextSpan(f"{self.row.description}",
+                                    style=self.major_style),
+                    ],
+                ),
+                ft.Text(
+                    spans=[
+                        ft.TextSpan(self.app.render_currency(self.row.tender_total),
+                                    style=self.major_style),
+                    ],
+                ),
+
+            ],
+            alignment=ft.MainAxisAlignment.SPACE_BETWEEN,
+        )
+
     def mark_void(self):
 
+        # TODO: how to properly handle this restriction?
+        assert self.row.row_type == self.enum.POS_ROW_TYPE_SELL
+
         self.major_style.color = 'red'
         self.major_style.decoration = ft.TextDecoration.LINE_THROUGH
 

wuttapos/views/base.py

@@ -31,7 +31,7 @@ from rattail.files import resource_path
 import flet as ft
 
 from wuttapos.controls.header import WuttaHeader
-from wuttapos.util import get_pos_batch_handler
+from wuttapos.util import get_pos_batch_handler, make_button
 
 
 class WuttaView(ft.View):
@@ -66,6 +66,9 @@ class WuttaView(ft.View):
     def get_batch_handler(self):
         return get_pos_batch_handler(self.config)
 
+    def make_button(self, *args, **kwargs):
+        return make_button(*args, **kwargs)
+
     def reset(self, *args, **kwargs):
         pass
 

wuttapos/views/pos.py

@@ -917,7 +917,9 @@ class POSView(WuttaView):
     def add_row_item(self, row):
 
         # TODO: row types ugh
-        if row.row_type not in ('sell',):
+        if row.row_type not in (self.enum.POS_ROW_TYPE_SELL,
+                                self.enum.POS_ROW_TYPE_TENDER,
+                                self.enum.POS_ROW_TYPE_CHANGE_BACK):
             return
 
         self.items.controls.append(
@@ -955,7 +957,28 @@ class POSView(WuttaView):
 
                 # void line
                 row = self.selected_item.data['row']
-                if not row.void:
+                if row.void:
+                    # cannot void an already void line
+                    self.page.snack_bar = ft.SnackBar(ft.Text("LINE ALREADY VOID",
+                                                              color='black',
+                                                              size=20,
+                                                              weight=ft.FontWeight.BOLD),
+                                                      bgcolor='yellow',
+                                                      duration=1500)
+                    self.page.snack_bar.open = True
+
+                elif row.row_type != self.enum.POS_ROW_TYPE_SELL:
+                    # cannot void line unless of type 'sell'
+                    self.page.snack_bar = ft.SnackBar(ft.Text("LINE DOES NOT ALLOW VOID",
+                                                              color='black',
+                                                              size=20,
+                                                              weight=ft.FontWeight.BOLD),
+                                                      bgcolor='yellow',
+                                                      duration=1500)
+                    self.page.snack_bar.open = True
+
+                else:
+                    # okay, void the line
                     row = session.get(row.__class__, row.uuid)
                     handler.void_row(row, user)
                     self.selected_item.data['row'] = row
@@ -966,17 +989,6 @@ class POSView(WuttaView):
                     # update screen to reflect new balance
                     self.txn_total.value = self.app.render_currency(batch.get_balance())
 
-
-                else:
-                    self.page.snack_bar = ft.SnackBar(ft.Text("LINE ALREADY VOID",
-                                                              color='black',
-                                                              size=20,
-                                                              weight=ft.FontWeight.BOLD),
-                                                      bgcolor='yellow',
-                                                      duration=1500)
-                    self.page.snack_bar.open = True
-
-
             else:
                 # void txn
                 handler.void_batch(batch, user)
@@ -1147,13 +1159,58 @@ class POSView(WuttaView):
         else:
             session.commit()
 
-            # TODO: maybe shouldn't clear screen so immediately?
+            # update screen to reflect new items/balance
+            for row in rows:
+                self.add_row_item(row)
+            self.txn_total.value = self.app.render_currency(batch.get_balance())
+
+            # executed batch means txn was finalized
             if batch.executed:
+
+                # look for "change back" row, if found then show alert
+                last_row = rows[-1]
+                if last_row.row_type == self.enum.POS_ROW_TYPE_CHANGE_BACK:
+
+                    def close_bs(e):
+                        # user dismissed the change back alert; clear screen
+                        bs.open = False
+                        bs.update()
                         self.clear_all()
+                        self.page.update()
+
+                    bs = ft.BottomSheet(
+                        ft.Container(
+                            ft.Column(
+                                [
+                                    ft.Text("Change Back", size=24,
+                                            weight=ft.FontWeight.BOLD),
+                                    ft.Divider(),
+                                    ft.Text("Please give customer change back:",
+                                            size=20),
+                                    ft.Text(self.app.render_currency(last_row.tender_total),
+                                            size=32, weight=ft.FontWeight.BOLD),
+                                    ft.Container(
+                                        content=self.make_button("Dismiss", on_click=close_bs,
+                                                                 height=80, width=120),
+                                        alignment=ft.alignment.center,
+                                        expand=1,
+                                    ),
+                                ],
+                            ),
+                            bgcolor='green',
+                            padding=20,
+                        ),
+                        open=True,
+                        dismissible=False,
+                    )
+
+                    # show change back alert
+                    # nb. we do *not* clear screen yet
+                    self.page.overlay.append(bs)
 
                 else:
-                # update screen to reflect new balance
+                    # txn finalized but no change back; clear screen
-                self.txn_total.value = self.app.render_currency(batch.get_balance())
+                    self.clear_all()
 
         finally:
             session.close()