# Copyright 2017 ForgeFlow S.L.
#   (http://www.forgeflow.com)
# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl.html).

from odoo import _, api, fields, models
from odoo.exceptions import UserError

PERCENT = 100.0


class StockInventory(models.Model):
    _inherit = "stock.inventory"

    @api.depends("state", "line_ids")
    def _compute_inventory_accuracy(self):
        for inv in self:
            theoretical = sum(inv.line_ids.mapped(lambda x: abs(x.theoretical_qty)))
            abs_discrepancy = sum(inv.line_ids.mapped(lambda x: abs(x.discrepancy_qty)))
            if theoretical:
                inv.inventory_accuracy = max(
                    PERCENT * (theoretical - abs_discrepancy) / theoretical, 0.0
                )
            if not inv.line_ids and inv.state == "done":
                inv.inventory_accuracy = PERCENT

    cycle_count_id = fields.Many2one(
        comodel_name="stock.cycle.count",
        string="Stock Cycle Count",
        ondelete="restrict",
        readonly=True,
    )
    inventory_accuracy = fields.Float(
        string="Accuracy",
        compute="_compute_inventory_accuracy",
        digits=(3, 2),
        store=True,
        group_operator="avg",
    )

    def _update_cycle_state(self):
        for inv in self:
            if inv.cycle_count_id and inv.state == "done":
                inv.cycle_count_id.state = "done"
        return True

    def action_validate(self):
        res = super(StockInventory, self).action_validate()
        self._update_cycle_state()
        return res

    def action_force_done(self):
        res = super(StockInventory, self).action_force_done()
        self._update_cycle_state()
        return res

    def write(self, vals):
        for inventory in self:
            if (
                inventory.cycle_count_id
                and "state" not in vals.keys()
                and inventory.state == "draft"
            ):
                raise UserError(
                    _(
                        "You cannot modify the configuration of an Inventory "
                        "Adjustment related to a Cycle Count."
                    )
                )
        return super(StockInventory, self).write(vals)