# Copyright (C) 2015-2020 Akretion France (http://www.akretion.com)
# @author Alexis de Lattre <alexis.delattre@akretion.com>
# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).

from odoo import _, api, fields, models
from odoo.tools import float_compare, float_is_zero
from odoo.tools.misc import formatLang


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

    date_order = fields.Datetime(tracking=True)
    client_order_ref = fields.Char(tracking=True)
    # for partner_id, the 'sale' module sets track_visibility='always'
    amount_tax = fields.Monetary(tracking=True)
    partner_shipping_id = fields.Many2one(tracking=True)
    partner_invoice_id = fields.Many2one(tracking=True)
    pricelist_id = fields.Many2one(tracking=True)
    payment_term_id = fields.Many2one(tracking=True)
    fiscal_position_id = fields.Many2one(tracking=True)
    # for reports
    has_discount = fields.Boolean(compute="_compute_has_discount")
    has_attachment = fields.Boolean(
        compute="_compute_has_attachment", search="_search_has_attachment"
    )

    @api.depends("order_line.discount")
    def _compute_has_discount(self):
        prec = self.env["decimal.precision"].precision_get("Discount")
        for order in self:
            has_discount = False
            for line in order.order_line:
                if not line.display_type and not float_is_zero(
                    line.discount, precision_digits=prec
                ):
                    has_discount = True
                    break
            order.has_discount = has_discount

    def _compute_has_attachment(self):
        iao = self.env["ir.attachment"]
        for order in self:
            if iao.search_count(
                [
                    ("res_model", "=", "sale.order"),
                    ("res_id", "=", order.id),
                    ("type", "=", "binary"),
                    ("company_id", "=", order.company_id.id),
                ]
            ):
                order.has_attachment = True
            else:
                order.has_attachment = False

    def _search_has_attachment(self, operator, value):
        att_order_ids = {}
        if operator == "=":
            search_res = self.env["ir.attachment"].search_read(
                [
                    ("res_model", "=", "sale.order"),
                    ("type", "=", "binary"),
                    ("res_id", "!=", False),
                ],
                ["res_id"],
            )
            for att in search_res:
                att_order_ids[att["res_id"]] = True
        res = [("id", value and "in" or "not in", list(att_order_ids))]
        return res

    # for report
    def py3o_lines_layout(self):
        self.ensure_one()
        res = []
        has_sections = False
        subtotal = 0.0
        for line in self.order_line:
            if line.display_type == "line_section":
                # insert line
                if has_sections:
                    res.append({"subtotal": subtotal})
                subtotal = 0.0  # reset counter
                has_sections = True
            elif not line.display_type:
                subtotal += line.price_subtotal
            res.append({"line": line})
        if has_sections:  # insert last subtotal line
            res.append({"subtotal": subtotal})
        # res:
        # [
        #    {'line': sale_order_line(1) with display_type=='line_section'},
        #    {'line': sale_order_line(2) without display_type},
        #    {'line': sale_order_line(3) without display_type},
        #    {'line': sale_order_line(4) with display_type=='line_note'},
        #    {'subtotal': 8932.23},
        # ]
        return res


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

    # for optional display in tree view
    product_barcode = fields.Char(
        related="product_id.barcode", string="Product Barcode"
    )

    @api.onchange("product_uom", "product_uom_qty")
    def product_uom_change(self):
        # When the user has manually set a custom price
        # he is often upset when Odoo changes it when he changes the qty
        # So we add a warning in which we recall the old price.
        res = {}
        old_price = self.price_unit
        super().product_uom_change()
        new_price = self.price_unit
        prec = self.env["decimal.precision"].precision_get("Product Price")
        if float_compare(old_price, new_price, precision_digits=prec):
            pricelist = self.order_id.pricelist_id
            res["warning"] = {
                "title": _("Price updated"),
                "message": _(
                    "Due to the update of the ordered quantity on line '%s', "
                    "the price has been updated according to pricelist '%s'.\n"
                    "Old price: %s\n"
                    "New price: %s"
                )
                % (
                    self.name,
                    pricelist.display_name,
                    formatLang(self.env, old_price, currency_obj=pricelist.currency_id),
                    formatLang(self.env, new_price, currency_obj=pricelist.currency_id),
                ),
            }
        return res