[IMP] energy_selfconsumption: integration invoicing

This is the Trello card

In this branch we worked on the last point of the requirements:

1. Changing the relationship between contract template and self-consumption so that contract template is linked to the product.
2. On the other hand, the obtaining of information is modified so that when the project is activated, contracts are created taking the values ​​stored in self-consumption.

energy_selfconsumption/wizards/contract_generation_wizard.py

@@ -4,27 +4,6 @@ from odoo import _, fields, models
 class ContractGenerationWizard(models.TransientModel):
     _name = "energy_selfconsumption.contract_generation.wizard"
 
-    price_energy = fields.Float(string="Price (€/kWn/day)")
-
-    recurring_interval = fields.Integer(
-        default=1,
-        string="Invoice Every",
-        help="Invoice every (Days/Week/Month/Year)",
-    )
-    recurring_rule_type = fields.Selection(
-        [
-            ("daily", "Day(s)"),
-            ("weekly", "Week(s)"),
-            ("monthly", "Month(s)"),
-            ("monthlylastday", "Month(s) last day"),
-            ("quarterly", "Quarter(s)"),
-            ("semesterly", "Semester(s)"),
-            ("yearly", "Year(s)"),
-        ],
-        default="monthly",
-        string="Recurrence",
-        help="Specify Interval for automatic invoice generation.",
-    )
     selfconsumption_id = fields.Many2one(
         "energy_selfconsumption.selfconsumption", readonly=True
     )
@@ -45,39 +24,6 @@ class ContractGenerationWizard(models.TransientModel):
             UserWarning: When no accounting journal is found.
             SomeException: When no distribution table in process of activation is found.
         """
-
-        # Create product
-        product_id = self.env["product.product"].create(
-            {
-                "name": _("Energy Acquired - %s") % (self.selfconsumption_id.name),
-                "lst_price": self.price_energy,
-                "company_id": self.env.company.id,
-            }
-        )
-
-        # Create contract formula
-        formula_contract_id = self.env["contract.line.qty.formula"].create(
-            {
-                "name": _("Formula - %s") % (self.selfconsumption_id.name),
-                "code": """
-days_timedelta = line.next_period_date_end - line.next_period_date_start
-if days_timedelta:
-  # Add one so it counts the same day too (month = 29 + 1)
-  days_between = days_timedelta.days + 1
-else:
-  days_between = 0
-result = line.supply_point_assignation_id.distribution_table_id.selfconsumption_project_id.power * line.supply_point_assignation_id.coefficient * days_between
-                """,
-            }
-        )
-
-        # Search accounting journal
-        journal_id = self.env["account.journal"].search(
-            [("company_id", "=", self.env.company.id), ("type", "=", "sale")], limit=1
-        )
-        if not journal_id:
-            raise UserWarning(_("Accounting Journal not found."))
-
         # Get distribution table
         distribution_id = (
             self.selfconsumption_id.distribution_table_ids.filtered_domain(
@@ -89,31 +35,7 @@ result = line.supply_point_assignation_id.distribution_table_id.selfconsumption_
 
         # Create contracts
         for supply_point_assignation in distribution_id.supply_point_assignation_ids:
-            contract_lines = [
-                (
-                    0,
-                    0,
-                    {
-                        "product_id": product_id.id,
-                        "automatic_price": True,
-                        "company_id": self.env.company.id,
-                        "qty_type": "variable",
-                        "qty_formula_id": formula_contract_id.id,
-                        "name": _(
-                            """CUPS: %s
-                        Owner: %s
-                        Invoicing period: #START# - #END#"""
-                        )
-                        % (
-                            supply_point_assignation.supply_point_id.code,
-                            supply_point_assignation.supply_point_id.owner_id.display_name,
-                        ),
-                        "supply_point_assignation_id": supply_point_assignation.id,
-                    },
-                )
-            ]
-
-            self.env["contract.contract"].create(
+            contract = self.env["contract.contract"].create(
                 {
                     "name": _("Contract - %s - %s")
                     % (
@@ -121,18 +43,24 @@ result = line.supply_point_assignation_id.distribution_table_id.selfconsumption_
                         supply_point_assignation.supply_point_id.partner_id.name,
                     ),
                     "partner_id": supply_point_assignation.supply_point_id.partner_id.id,
-                    "invoice_partner_id": supply_point_assignation.supply_point_id.partner_id.id,
-                    "journal_id": journal_id.id,
-                    "recurring_interval": self.recurring_interval,
-                    "recurring_rule_type": self.recurring_rule_type,
-                    "recurring_invoicing_type": "post-paid",
-                    "date_start": fields.date.today(),
+                    "project_id": self.selfconsumption_id.id,
                     "company_id": self.env.company.id,
-                    "contract_line_ids": contract_lines,
-                    "project_id": self.selfconsumption_id.project_id.id,
+                    "date_start": fields.date.today(),
+                    "contract_template_id": self.selfconsumption_id.product_id.contract_template_id.id,
                 }
             )
-
+            # We use the next method from the contract model to update the contract fields with contract template
+            contract._onchange_contract_template_id()
+            for contract_line_id in contract.contract_line_ids:
+                contract_line_id.write(
+                    {
+                        "name": contract_line_id.name.format(
+                            code=supply_point_assignation.supply_point_id.code,
+                            owner_id=supply_point_assignation.supply_point_id.owner_id.display_name,
+                        ),
+                        "supply_point_assignation_id": supply_point_assignation.id,
+                    }
+                )
         # Update selfconsumption and distribution_table state
         self.selfconsumption_id.write({"state": "active"})
         self.selfconsumption_id.distribution_table_state("process", "active")