From 2950827c63e533abf0497e0662333cd3bcbdd53b Mon Sep 17 00:00:00 2001
From: Lance Edgar <lance@edbob.org>
Date: Tue, 6 Sep 2022 16:31:59 -0500
Subject: [PATCH] Add basic per-item discount support for custorders

---
 tailbone/templates/custorders/configure.mako |  9 ++++
 tailbone/templates/custorders/create.mako    | 52 +++++++++++++++++++-
 tailbone/views/custorders/orders.py          | 23 ++++++++-
 3 files changed, 82 insertions(+), 2 deletions(-)

diff --git a/tailbone/templates/custorders/configure.mako b/tailbone/templates/custorders/configure.mako
index 1abbd7b2..0ce07f30 100644
--- a/tailbone/templates/custorders/configure.mako
+++ b/tailbone/templates/custorders/configure.mako
@@ -88,6 +88,15 @@
       </b-checkbox>
     </b-field>
 
+    <b-field>
+      <b-checkbox name="rattail.custorders.allow_item_discounts"
+                  v-model="simpleSettings['rattail.custorders.allow_item_discounts']"
+                  native-value="true"
+                  @input="settingsNeedSaved = true">
+        Allow per-item discounts
+      </b-checkbox>
+    </b-field>
+
   </div>
 </%def>
 
diff --git a/tailbone/templates/custorders/create.mako b/tailbone/templates/custorders/create.mako
index 4a92c063..f8d7096e 100644
--- a/tailbone/templates/custorders/create.mako
+++ b/tailbone/templates/custorders/create.mako
@@ -805,7 +805,21 @@
                       </b-field>
 
                       <b-field grouped>
-                        <b-field label="Total Price">
+                        % if allow_item_discounts:
+                            <b-field label="Discount" horizontal>
+                              <div class="level">
+                                <div class="level-item">
+                                      <numeric-input v-model="productDiscountPercent"
+                                                     style="width: 5rem;">
+                                      </numeric-input>
+                                </div>
+                                <div class="level-item">
+                                  <span>&nbsp;%</span>
+                                </div>
+                              </div>
+                            </b-field>
+                        % endif
+                        <b-field label="Total Price" horizontal expanded>
                           <span :class="productSalePriceDisplay ? 'has-background-warning': null">
                             {{ getItemTotalPriceDisplay() }}
                           </span>
@@ -981,6 +995,12 @@
                   </span>
                 </b-table-column>
 
+                % if allow_item_discounts:
+                    <b-table-column label="Discount">
+                      {{ props.row.discount_percent }}{{ props.row.discount_percent ? " %" : "" }}
+                    </b-table-column>
+                % endif
+
                 <b-table-column label="Total">
                   <span
                     % if product_price_may_be_questionable:
@@ -1099,6 +1119,7 @@
                 items: ${json.dumps(order_items)|n},
                 editingItem: null,
                 showingItemDialog: false,
+                itemDialogSaving: false,
                 itemDialogTabIndex: 0,
                 pastItemsShowDialog: false,
                 pastItemsLoading: false,
@@ -1133,6 +1154,10 @@
                 productPriceNeedsConfirmation: false,
                 % endif
 
+                % if allow_item_discounts:
+                    productDiscountPercent: null,
+                % endif
+
                 pendingProduct: {},
                 departmentOptions: ${json.dumps(department_options)|n},
 
@@ -1314,6 +1339,9 @@
             },
 
             itemDialogSaveDisabled() {
+                if (this.itemDialogSaving) {
+                    return true
+                }
                 if (this.productIsKnown) {
                     if (!this.productUUID) {
                         return true
@@ -1330,6 +1358,9 @@
             },
 
             itemDialogSaveButtonText() {
+                if (this.itemDialogSaving) {
+                    return "Working, please wait..."
+                }
                 return this.editingItem ? "Update Item" : "Add Item"
             },
 
@@ -1723,6 +1754,11 @@
                 if (basePrice) {
                     let totalPrice = basePrice * this.productQuantity
                     if (totalPrice) {
+                        % if allow_item_discounts:
+                            if (this.productDiscountPercent) {
+                                totalPrice *= (100 - this.productDiscountPercent) / 100
+                            }
+                        % endif
                         totalPrice = totalPrice.toFixed(2)
                         return "$" + totalPrice
                     }
@@ -1790,6 +1826,10 @@
                 this.productPriceNeedsConfirmation = false
                 % endif
 
+                % if allow_item_discounts:
+                    this.productDiscountPercent = null
+                % endif
+
                 this.itemDialogTabIndex = 0
                 this.showingItemDialog = true
                 this.$nextTick(() => {
@@ -1882,6 +1922,10 @@
                 this.productUnitChoices = row.order_uom_choices
                 this.productUOM = row.order_uom
 
+                % if allow_item_discounts:
+                    this.productDiscountPercent = row.discount_percent
+                % endif
+
                 this.itemDialogTabIndex = 1
                 this.showingItemDialog = true
             },
@@ -1992,6 +2036,7 @@
             },
 
             itemDialogSave() {
+                this.itemDialogSaving = true
 
                 let params = {
                     product_is_known: this.productIsKnown,
@@ -2002,6 +2047,10 @@
                     order_uom: this.productUOM,
                 }
 
+                % if allow_item_discounts:
+                    params.discount_percent = this.productDiscountPercent
+                % endif
+
                 if (this.productIsKnown) {
                     params.product_uuid = this.productUUID
                 } else {
@@ -2032,6 +2081,7 @@
                     // also update the batch total price
                     this.batchTotalPriceDisplay = response.data.batch.total_price_display
 
+                    this.itemDialogSaving = false
                     this.showingItemDialog = false
                 })
             },
diff --git a/tailbone/views/custorders/orders.py b/tailbone/views/custorders/orders.py
index cf231374..224ec33a 100644
--- a/tailbone/views/custorders/orders.py
+++ b/tailbone/views/custorders/orders.py
@@ -348,6 +348,7 @@ class CustomerOrderView(MasterView):
             'department_options': self.get_department_options(),
             'default_uom_choices': self.batch_handler.uom_choices_for_product(None),
             'default_uom': None,
+            'allow_item_discounts': self.batch_handler.allow_item_discounts(),
         })
 
         if self.batch_handler.allow_case_orders():
@@ -695,6 +696,7 @@ class CustomerOrderView(MasterView):
             'order_quantity': pretty_quantity(row.order_quantity),
             'order_uom': row.order_uom,
             'order_uom_choices': self.uom_choices_for_row(row),
+            'discount_percent': pretty_quantity(row.discount_percent),
 
             'department_display': row.department_name,
 
@@ -807,6 +809,7 @@ class CustomerOrderView(MasterView):
 
         order_quantity = decimal.Decimal(data.get('order_quantity') or '0')
         order_uom = data.get('order_uom')
+        discount_percent = decimal.Decimal(data.get('discount_percent') or '0')
 
         if data.get('product_is_known'):
 
@@ -822,6 +825,9 @@ class CustomerOrderView(MasterView):
             if self.batch_handler.product_price_may_be_questionable():
                 kwargs['price_needs_confirmation'] = data.get('price_needs_confirmation')
 
+            if self.batch_handler.allow_item_discounts():
+                kwargs['discount_percent'] = discount_percent
+
             row = self.batch_handler.add_product(batch, product,
                                                  order_quantity, order_uom,
                                                  **kwargs)
@@ -838,9 +844,14 @@ class CustomerOrderView(MasterView):
 
             pending_info['user'] = self.request.user
 
+            kwargs = {}
+            if self.batch_handler.allow_item_discounts():
+                kwargs['discount_percent'] = discount_percent
+
             row = self.batch_handler.add_pending_product(batch,
                                                          pending_info,
-                                                         order_quantity, order_uom)
+                                                         order_quantity, order_uom,
+                                                         **kwargs)
 
         self.Session.flush()
         return {'batch': self.normalize_batch(batch),
@@ -860,6 +871,7 @@ class CustomerOrderView(MasterView):
 
         order_quantity = decimal.Decimal(data.get('order_quantity') or '0')
         order_uom = data.get('order_uom')
+        discount_percent = decimal.Decimal(data.get('discount_percent') or '0')
 
         if data.get('product_is_known'):
 
@@ -879,6 +891,9 @@ class CustomerOrderView(MasterView):
             if self.batch_handler.product_price_may_be_questionable():
                 row.price_needs_confirmation = data.get('price_needs_confirmation')
 
+            if self.batch_handler.allow_item_discounts():
+                row.discount_percent = discount_percent
+
             self.batch_handler.refresh_row(row)
 
         else: # product is not known
@@ -887,6 +902,9 @@ class CustomerOrderView(MasterView):
             row.order_quantity = order_quantity
             row.order_uom = order_uom
 
+            if self.batch_handler.allow_item_discounts():
+                row.discount_percent = discount_percent
+
             # nb. this will refresh the row
             pending_info = dict(data['pending_product'])
             self.batch_handler.update_pending_product(row, pending_info)
@@ -965,6 +983,9 @@ class CustomerOrderView(MasterView):
             {'section': 'rattail.custorders',
              'option': 'allow_unknown_product',
              'type': bool},
+            {'section': 'rattail.custorders',
+             'option': 'allow_item_discounts',
+             'type': bool},
         ]
 
     @classmethod