from odoo import fields, models, api, _, Command


class SaleOrder(models.Model):
    _inherit = "sale.order"

    valid_equipment_ids = fields.One2many(
        comodel_name="bemade_fsm.equipment", related="partner_id.owned_equipment_ids"
    )

    default_equipment_ids = fields.Many2many(
        comodel_name="bemade_fsm.equipment",
        string="Default Equipment to Service",
        help="The default equipment to service for new sale order lines.",
        compute="_compute_default_equipment",
        inverse="_inverse_default_equipment",
        store=True,
    )

    summary_equipment_ids = fields.Many2many(
        comodel_name="bemade_fsm.equipment",
        string="Equipment Being Serviced",
        compute="_compute_summary_equipment_ids",
    )

    site_contacts = fields.Many2many(
        comodel_name="res.partner",
        relation="sale_order_site_contacts_rel",
        compute="_compute_default_contacts",
        inverse="_inverse_default_contacts",
        store=True,
    )

    work_order_contacts = fields.Many2many(
        comodel_name="res.partner",
        relation="sale_order_work_order_contacts_rel",
        compute="_compute_default_contacts",
        inverse="_inverse_default_contacts",
        string="Work Order Recipients",
        store=True,
    )

    visit_ids = fields.One2many(
        comodel_name="bemade_fsm.visit", inverse_name="sale_order_id", readonly=False
    )

    is_fsm = fields.Boolean(
        compute="_compute_is_fsm",
        string="Is FSM",
        store=True,
    )

    @api.depends("order_line.task_id")
    def get_relevant_order_lines(self, task_id):
        self.ensure_one()
        linked_lines = self.order_line.filtered(
            lambda line: line.task_id == task_id
            or line == task_id.visit_id.so_section_id
        )
        visit_lines = linked_lines.filtered(lambda line: line.visit_id)
        for line in visit_lines:
            linked_lines |= line.get_section_line_ids()
        return linked_lines

    @api.depends("order_line.equipment_ids")
    def _compute_summary_equipment_ids(self):
        for rec in self:
            rec.summary_equipment_ids = rec.order_line.mapped("equipment_ids")

    @api.onchange("partner_shipping_id")
    def _onchange_partner_shipping_id(self):
        res = super()._onchange_partner_shipping_id()
        self._compute_default_equipment()
        self._compute_default_contacts()
        return res

    @api.depends("partner_shipping_id")
    def _compute_default_contacts(self):
        for rec in self:
            rec.site_contacts = rec.partner_shipping_id.site_contacts
            rec.work_order_contacts = rec.partner_shipping_id.work_order_contacts

    def _inverse_default_contacts(self):
        pass

    @api.depends(
        "partner_id",
        "partner_shipping_id",
        "partner_shipping_id.equipment_ids",
        "partner_id.owned_equipment_ids",
    )
    def _compute_default_equipment(self):
        for rec in self:
            if rec.partner_shipping_id.equipment_ids:
                ids = rec.partner_shipping_id.equipment_ids
            else:
                ids = rec.partner_id.owned_equipment_ids
            rec.default_equipment_ids = ids if len(ids) < 4 else False

    def _inverse_default_equipment(self):
        pass

    def copy(self, default=None):
        rec = super().copy(default)
        rec.visit_ids = [Command.set(rec.order_line.visit_ids.ids)]
        return rec

    def _create_default_visit(self):
        """Called when an order is confirmed with lines that will create an FSM task, in order to make sure there is
        a visit line grouping all the service being done."""
        self.ensure_one()
        visit = self.env["bemade_fsm.visit"].create(
            {
                "label": _("Service Visit"),
                "sale_order_id": self.id,
            }
        )
        # Make sure it goes to the top of the list
        visit.so_section_id.sequence = 0

    def _create_or_organize_visits_if_needed(self):
        """Adds a visit line to the top of the order if there are not already visit lines for an order with lines that
        will create an FSM task."""
        for order in self.filtered("company_id.create_default_fsm_visit"):
            if not order.visit_ids and order.is_fsm:
                order._create_default_visit()
            if order.is_fsm:
                # Make sure that all the lines producing FSM tasks are under a visit
                visit_line_ids = (
                    order.mapped("visit_ids")
                    .mapped("so_section_id")
                    .mapped("section_line_ids")
                )
                if any(
                    [
                        True
                        for line in order.order_line.filtered(
                            lambda line: not line.display_type
                        )
                        if line not in visit_line_ids
                    ]
                ):
                    # If not, promote the first visit to the top of the order items list
                    for line in order.order_line:
                        line.sequence += 1
                    order.mapped("visit_ids").mapped("so_section_id")[0].sequence = 0

    @api.depends("order_line.is_fsm")
    def _compute_is_fsm(self):
        for rec in self:
            rec.is_fsm = any([line.is_fsm for line in rec.order_line])

    def action_confirm(self):
        self._create_or_organize_visits_if_needed()
        return super().action_confirm()