from odoo import models, fields, api


class AccountMove(models.Model):
    _inherit = "account.move"

    project_ids = fields.Many2many(
        "project.project", name="Projects", compute="get_related_project_ids"
    )
    project_count = fields.Integer("Project Count", compute="get_related_project_ids")
    projects_name = fields.Char("Project(s)", compute="get_related_project_ids")

    def action_open_projects(self):
        """
        Open related projects, in form or tree view depending on project numbers
        """
        project_ids = self.project_ids.ids
        action = self.env["ir.actions.actions"]._for_xml_id(
            "project.open_view_project_all"
        )

        if self.project_count == 1:
            action["res_id"] = project_ids[0]
            action["views"] = [[False, "form"]]
        else:
            action["views"] = [[False, "tree"], [False, "form"]]

        action["domain"] = [("id", "in", project_ids)]

        del action["target"]  # to display breadcrumbs

        return action

    @api.depends("line_ids.sale_line_ids")
    def get_related_project_ids(self):
        for move in self:
            projects = (
                self.env["project.task"]
                .search(
                    [("sale_order_id", "in", move.line_ids.sale_line_ids.order_id.ids)]
                )
                .project_id
            )
            move.project_ids = projects.ids
            move.projects_name = " ; ".join([p.name for p in projects])
            move.project_count = len(projects)