[ADD] helpdesk_convert_ticket_to_task: add new button in ticket to convert into task with many informations

helpdesk_convert_ticket_to_task/models/helpdesk_ticket.py

@@ -0,0 +1,103 @@
+from odoo import _, models, api
+
+class HelpdeskTicket(models.Model):
+    _inherit = "helpdesk.ticket"
+
+    def button_convert_to_task(self):
+        user_ids = [self.user_id.id]
+        task_service_id, request_type_id = self._match_task_service_and_request_type(
+            ticket_category_id=self.category_id.id,
+            ticket_request_type_id=self.request_type_id.id
+        )
+
+        task = self.env["project.task"].create({
+            "name": self.name,
+            "description": self.description,
+            "project_id": self.project_id.id,
+            "user_ids": user_ids,
+            "partner_id": self.partner_id.id,
+            "service_id": task_service_id,
+            "request_type_id": request_type_id,
+            "priority": self.priority
+        })
+
+        # copy chatter
+        for msg in reversed(self.message_ids):
+            msg.copy({
+                'model': 'project.task',
+                'res_id': task.id
+            })
+
+            # copy attachments inserted in the messages
+            for attach in msg.attachment_ids:
+                attach.copy({
+                    'res_model': 'project.task',
+                    'res_id': task.id,
+                    'res_name': task.name
+                })
+
+        # copy attachments not added in a message
+        for attachment in self.attachment_ids:
+            attachment.copy({
+                'res_model': 'project.task',
+                'res_id': task.id,
+                'res_name': task.name
+            })
+
+        # copy subscribers
+        task.message_subscribe(partner_ids=self.message_partner_ids.ids)
+
+        # warn (in the chatter) that the task is a copy
+        base_url = self.env["ir.config_parameter"].sudo().get_param("web.base.url")
+        ticket_url = f"{base_url}/web#id={self.id}&model=helpdesk.ticket&view_type=form"
+        task_message = _(
+            "This task has been converted from a ticket. You can find the original ticket <a href='%(ticket_url)s' target='_blank'>on this link</a>.",
+            ticket_url=ticket_url
+        )
+        task.message_post(body=task_message)
+
+        # warn (in the chatter) that the ticket has been converted
+        task_url = f"{base_url}/web#id={task.id}&model=project.task&view_type=form"
+        ticket_message = _(
+            "This ticket has been converted into a task. You can find it <a href='%(task_url)s' target='_blank'>on this link</a>.",
+            task_url=task_url
+        )
+        self.message_post(body=ticket_message)
+
+        # archive the ticket
+        self.write({
+            "active": False,
+            "task_id": task.id
+        })
+        # transfer timesheets from ticket to task
+        self._onchange_task_id()
+
+        return {
+            "type": "ir.actions.act_window",
+            "view_mode": "form",
+            "target": "current",
+            "res_model": "project.task",
+            "res_id": task.id,
+        }
+
+    def _match_task_service_and_request_type(
+            self,
+            ticket_category_id: int,
+            ticket_request_type_id: int
+    ) -> tuple[int, int]:
+        """
+        This function permits to match the task service_id and request_type from the ticket category and request type
+        """
+        helpdesk_ticket_category = self.env["helpdesk.ticket.category"].search(
+            [("id", "=", ticket_category_id)],
+            limit=1
+        )
+        task_service = self.env["task.service"].search([("name", "=", helpdesk_ticket_category.name)])
+
+        helpdesk_ticket_request_type = self.env["helpdesk.request.type"].search(
+            [("id", "=", ticket_request_type_id)],
+            limit=1
+        )
+        task_request_type = self.env["request.type"].search([("name", "=", helpdesk_ticket_request_type.name)])
+
+        return task_service.id, task_request_type.id