[ADD] Invoice app statistics (e.g. storage usage)

I want to refactor this eventually with changes in OCA modules (product_pack, subscription_oca, and more). Didn't want to spend too much time on this. This works and is fine if we eventually want to refactor it.

argocd_sale/__manifest__.py

@@ -10,6 +10,7 @@
         "subscription_oca",
         "argocd_deployer",
         "sale_recurring_payment",
+        "account_invoice_pricelist",
     ],
     "demo": [
         "demo/sale_subscription_template_demo.xml",

argocd_sale/demo/product_template_demo.xml

@@ -1,5 +1,12 @@
 <?xml version="1.0" encoding="UTF-8" ?>
 <odoo>
+    <record id="demo_s3_storage_product" model="product.template">
+        <field name="name">S3 Storage</field>
+        <field name="application_stat_type_id" ref="argocd_deployer.demo_storage_usage_application_stat_type" />
+        <field name="list_price">0.20</field>
+        <field name="invoice_policy">order</field>
+    </record>
+
     <record id="demo_curq_basis_product_template" model="product.template">
         <field name="name">Curq Basis</field>
         <field name="application_template_id" ref="argocd_deployer.demo_curq_basis_application_template" />
@@ -8,6 +15,7 @@
         <field name="list_price">30.0</field>
         <field name="invoice_policy">order</field>
         <field name="application_set_id" ref="argocd_deployer.application_set_default"/>
+        <field name="stat_product_ids" eval="[Command.set([ref('argocd_sale.demo_s3_storage_product')])]" />
     </record>
     <record id="demo_pos_product_template" model="product.template">
         <field name="name">Point of Sales</field>

argocd_sale/models/product_template.py

@@ -32,3 +32,12 @@ class ProductTemplate(models.Model):
         column1="product_template_id",
         column2="partner_id",
     )
+
+    application_stat_type_id = fields.Many2one(
+        string="Statistics Type", comodel_name="argocd.application.stat.type"
+    )
+
+    # We use this for now because product.pack doesn't work really for products with variants
+    stat_product_ids = fields.Many2many(
+        comodel_name="product.product", string="Products on Statistics"
+    )

argocd_sale/models/subscription.py

@@ -1,5 +1,7 @@
 from datetime import timedelta
 
+from dateutil.relativedelta import relativedelta
+
 from odoo import Command, _, fields, models
 
 
@@ -106,3 +108,74 @@ def view_applications(self):
             "type": "ir.actions.act_window",
             "domain": [("id", "in", self.application_ids.ids)],
         }
+
+    def _prepare_account_move_line_stat_product(
+        self, app, stat_product, sequence, date_from, date_to
+    ):
+        self.ensure_one()
+        account = (
+            stat_product.property_account_income_id
+            or stat_product.categ_id.property_account_income_categ_id
+        )
+        quantity = 0
+        stats = app.stat_ids.filtered(
+            lambda l: date_from < l.date.date() < date_to
+        ).mapped("value")
+        if stats:
+            quantity = max(stats)
+        return {
+            "product_id": stat_product.id,
+            "name": "> %s" % stat_product.name,
+            "quantity": quantity,
+            "price_unit": stat_product.list_price,
+            "tax_ids": [Command.set(stat_product.taxes_id.ids)],
+            "product_uom_id": stat_product.uom_id.id,
+            "account_id": account.id,
+            "sequence": sequence,
+        }
+
+    def _prepare_account_move(self, line_ids):
+        # TODO: Only used in draft, invoice, invoice_send make it also work for sale_and_invoice
+        if not self.account_invoice_ids_count:  # First time don't invoice stat products
+            return super()._prepare_account_move(line_ids)
+
+        # TODO: Fix this with a sequence in sale.subscription.line
+        sequence = 0
+        for cmd in line_ids:
+            cmd[2]["sequence"] = sequence
+            sequence += 10
+
+        type_interval = self.template_id.recurring_rule_type
+        interval = int(self.template_id.recurring_interval)
+        recurring_previous_date = self.recurring_next_date - relativedelta(
+            **{type_interval: interval}
+        )
+
+        additional_invoice_line_ids = []
+        for line in self.sale_subscription_line_ids.filtered(
+            lambda l: l.product_id.stat_product_ids and l.application_ids
+        ):
+            corresponding_invoice_line = list(
+                filter(lambda l: l[2]["product_id"] == line.product_id.id, line_ids)
+            )[0][
+                2
+            ]  # TODO: Add field subscription_line_id to account.move.line
+            sequence = corresponding_invoice_line["sequence"] + 1
+            app = line.application_ids
+            for stat_product in line.product_id.stat_product_ids:
+                line_values = self._prepare_account_move_line_stat_product(
+                    app,
+                    stat_product,
+                    sequence,
+                    recurring_previous_date,
+                    self.recurring_next_date,
+                )
+                additional_invoice_line_ids.append(Command.create(line_values))
+        line_ids += additional_invoice_line_ids
+        return super()._prepare_account_move(line_ids)
+
+    def create_invoice(self):
+        # TODO: Only used in draft, invoice, invoice_send make it also work for sale_and_invoice
+        res = super().create_invoice()
+        res.button_update_prices_from_pricelist()
+        return res

argocd_sale/views/product_template.xml

@@ -14,6 +14,11 @@
                         <field name="application_template_id" />
                         <field name="application_tag_ids" widget="many2many_tags"/>
                         <field name="reseller_partner_ids" options="{'no_create_edit': True}" />
+
+                    </group>
+                    <group>
+                        <field name="application_stat_type_id" options="{'no_create_edit': True}" />
+                        <field name="stat_product_ids" widget="many2many_tags" domain="[('application_stat_type_id', '!=', False)]" />
                     </group>
                 </page>
             </xpath>

argocd_website/controllers/main.py

@@ -115,6 +115,17 @@ def get_subscription_details(self):
                         }
                         for variant in line.product_id.product_template_variant_value_ids
                     ],
+                    "stat_products": [
+                        {
+                            "name": stat_product.name,
+                            "uom": stat_product.uom_id.name,
+                            "price": stat_product.list_price,
+                            "price_base_formatted": currency.format(
+                                stat_product.list_price
+                            ),
+                        }
+                        for stat_product in line.product_id.stat_product_ids
+                    ],
                 }
                 for line in sub.sale_subscription_line_ids
             ],

argocd_website/static/src/xml/website.xml

@@ -19,6 +19,22 @@
                              t-esc="variant_value.price_extra_formatted"
                         />
                     </div>
+                    <t t-if="line.stat_products">
+                        <div class="row">
+                            <div class="col-12 fw-bold small pt-2">
+                                <span class="fa fa-fw fa-caret-right" /> Extra costs
+                            </div>
+                        </div>
+                        <div class="row" t-as="stat_product" t-foreach="line.stat_products">
+                            <div class="col-12 small">
+                                <span class="fa fa-fw" />
+                                <span t-esc="stat_product.name" />:
+                                <span class="badge text-bg-light">
+                                    <t t-esc="price_base_formatted" /> per <t t-esc="stat_product.uom" />
+                                </span>
+                            </div>
+                        </div>
+                    </t>
                 </li>
             </ul>