[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/models/selfconsumption.py

@@ -87,7 +87,11 @@ class Selfconsumption(models.Model):
     contracts_count = fields.Integer(compute=_compute_contract_count)
     invoicing_mode = fields.Selection(INVOICING_VALUES, string="Invoicing Mode")
     product_id = fields.Many2one("product.product", string="Product")
-    contract_template_id = fields.Many2one("contract.template")
+    contract_template_id = fields.Many2one(
+        "contract.template",
+        string="Contract Template",
+        related="product_id.contract_template_id",
+    )
     reseller_id = fields.Many2one(
         "energy_project.reseller",
         string="Energy Reseller",
@@ -147,7 +151,7 @@ class Selfconsumption(models.Model):
         Activates the energy self-consumption project, performing various validations.
 
         This method checks for the presence of a valid code, CIL, and rated power
-        for the project. If all validations pass, it opens a wizard for generating
+        for the project. If all validations pass, it instances a wizard and generating
         contracts for the project.
 
         Note:
@@ -168,16 +172,18 @@ class Selfconsumption(models.Model):
                 raise ValidationError(_("Project must have a valid CIL."))
             if not record.power or record.power <= 0:
                 raise ValidationError(_("Project must have a valid Rated Power."))
-            return {
-                "name": _("Generate Contracts"),
-                "type": "ir.actions.act_window",
-                "view_mode": "form",
-                "res_model": "energy_selfconsumption.contract_generation.wizard",
-                "views": [(False, "form")],
-                "view_id": False,
-                "target": "new",
-                "context": {"default_selfconsumption_id": self.id},
-            }
+            if not record.invoicing_mode:
+                raise ValidationError(
+                    _("Project must have defined a invoicing mode before activation.")
+                )
+
+            # Create ContractGenerationWizard
+            contract_wizard = self.env[
+                "energy_selfconsumption.contract_generation.wizard"
+            ].create({"selfconsumption_id": self.id})
+
+            # Generate Contracts
+            contract_wizard.generate_contracts_button()
 
     def set_invoicing_mode(self):
         return {