# -*- coding: utf-8 -*-
# Part of Odoo. See LICENSE file for full copyright and licensing details.

from datetime import datetime

from odoo import api, fields, models, _
from odoo.addons import decimal_precision as dp
from odoo.exceptions import UserError, ValidationError
from odoo.tools import float_compare


class StockMove(models.Model):
    _inherit = 'stock.move'

    repair_id = fields.Many2one('repair.order')


class Repair(models.Model):
    _name = 'repair.order'
    _description = 'Repair Order'
    _inherit = ['mail.thread', 'mail.activity.mixin']
    _order = 'create_date desc'

    @api.model
    def _default_stock_location(self):
        warehouse = self.env['stock.warehouse'].search([], limit=1)
        if warehouse:
            return warehouse.lot_stock_id.id
        return False

    name = fields.Char(
        'Repair Reference',
        default=lambda self: self.env['ir.sequence'].next_by_code('repair.order'),
        copy=False, required=True,
        states={'confirmed': [('readonly', True)]})
    product_id = fields.Many2one(
        'product.product', string='Product to Repair',
        readonly=True, required=True, states={'draft': [('readonly', False)]})
    product_qty = fields.Float(
        'Product Quantity',
        default=1.0, digits=dp.get_precision('Product Unit of Measure'),
        readonly=True, required=True, states={'draft': [('readonly', False)]})
    product_uom = fields.Many2one(
        'uom.uom', 'Product Unit of Measure',
        readonly=True, required=True, states={'draft': [('readonly', False)]})
    partner_id = fields.Many2one(
        'res.partner', 'Customer',
        index=True, states={'confirmed': [('readonly', True)]},
        help='Choose partner for whom the order will be invoiced and delivered. You can find a partner by its Name, TIN, Email or Internal Reference.')
    address_id = fields.Many2one(
        'res.partner', 'Delivery Address',
        domain="[('parent_id','=',partner_id)]",
        states={'confirmed': [('readonly', True)]})
    default_address_id = fields.Many2one('res.partner', compute='_compute_default_address_id')
    state = fields.Selection([
        ('draft', 'Quotation'),
        ('cancel', 'Cancelled'),
        ('confirmed', 'Confirmed'),
        ('under_repair', 'Under Repair'),
        ('ready', 'Ready to Repair'),
        ('2binvoiced', 'To be Invoiced'),
        ('invoice_except', 'Invoice Exception'),
        ('done', 'Repaired')], string='Status',
        copy=False, default='draft', readonly=True, tracking=True,
        help="* The \'Draft\' status is used when a user is encoding a new and unconfirmed repair order.\n"
             "* The \'Confirmed\' status is used when a user confirms the repair order.\n"
             "* The \'Ready to Repair\' status is used to start to repairing, user can start repairing only after repair order is confirmed.\n"
             "* The \'To be Invoiced\' status is used to generate the invoice before or after repairing done.\n"
             "* The \'Done\' status is set when repairing is completed.\n"
             "* The \'Cancelled\' status is used when user cancel repair order.")
    location_id = fields.Many2one(
        'stock.location', 'Location',
        default=_default_stock_location,
        index=True, readonly=True, required=True,
        help="This is the location where the product to repair is located.",
        states={'draft': [('readonly', False)], 'confirmed': [('readonly', True)]})
    lot_id = fields.Many2one(
        'stock.production.lot', 'Lot/Serial',
        domain="[('product_id','=', product_id)]",
        help="Products repaired are all belonging to this lot", oldname="prodlot_id")
    guarantee_limit = fields.Date('Warranty Expiration', states={'confirmed': [('readonly', True)]})
    operations = fields.One2many(
        'repair.line', 'repair_id', 'Parts',
        copy=True, readonly=True, states={'draft': [('readonly', False)]})
    pricelist_id = fields.Many2one(
        'product.pricelist', 'Pricelist',
        default=lambda self: self.env['product.pricelist'].search([], limit=1).id,
        help='Pricelist of the selected partner.')
    partner_invoice_id = fields.Many2one('res.partner', 'Invoicing Address')
    invoice_method = fields.Selection([
        ("none", "No Invoice"),
        ("b4repair", "Before Repair"),
        ("after_repair", "After Repair")], string="Invoice Method",
        default='none', index=True, readonly=True, required=True,
        states={'draft': [('readonly', False)]},
        help='Selecting \'Before Repair\' or \'After Repair\' will allow you to generate invoice before or after the repair is done respectively. \'No invoice\' means you don\'t want to generate invoice for this repair order.')
    invoice_id = fields.Many2one(
        'account.invoice', 'Invoice',
        copy=False, readonly=True, tracking=True)
    move_id = fields.Many2one(
        'stock.move', 'Move',
        copy=False, readonly=True, tracking=True,
        help="Move created by the repair order")
    fees_lines = fields.One2many(
        'repair.fee', 'repair_id', 'Operations',
        copy=True, readonly=True, states={'draft': [('readonly', False)]})
    internal_notes = fields.Text('Internal Notes')
    quotation_notes = fields.Text('Quotation Notes')
    company_id = fields.Many2one(
        'res.company', 'Company',
        default=lambda self: self.env['res.company']._company_default_get('repair.order'))
    invoiced = fields.Boolean('Invoiced', copy=False, readonly=True)
    repaired = fields.Boolean('Repaired', copy=False, readonly=True)
    amount_untaxed = fields.Float('Untaxed Amount', compute='_amount_untaxed', store=True)
    amount_tax = fields.Float('Taxes', compute='_amount_tax', store=True)
    amount_total = fields.Float('Total', compute='_amount_total', store=True)
    tracking = fields.Selection('Product Tracking', related="product_id.tracking", readonly=False)

    @api.one
    @api.depends('partner_id')
    def _compute_default_address_id(self):
        if self.partner_id:
            self.default_address_id = self.partner_id.address_get(['contact'])['contact']

    @api.one
    @api.depends('operations.price_subtotal', 'invoice_method', 'fees_lines.price_subtotal', 'pricelist_id.currency_id')
    def _amount_untaxed(self):
        total = sum(operation.price_subtotal for operation in self.operations)
        total += sum(fee.price_subtotal for fee in self.fees_lines)
        self.amount_untaxed = self.pricelist_id.currency_id.round(total)

    @api.one
    @api.depends('operations.price_unit', 'operations.product_uom_qty', 'operations.product_id',
                 'fees_lines.price_unit', 'fees_lines.product_uom_qty', 'fees_lines.product_id',
                 'pricelist_id.currency_id', 'partner_id')
    def _amount_tax(self):
        val = 0.0
        for operation in self.operations:
            if operation.tax_id:
                tax_calculate = operation.tax_id.compute_all(operation.price_unit, self.pricelist_id.currency_id, operation.product_uom_qty, operation.product_id, self.partner_id)
                for c in tax_calculate['taxes']:
                    val += c['amount']
        for fee in self.fees_lines:
            if fee.tax_id:
                tax_calculate = fee.tax_id.compute_all(fee.price_unit, self.pricelist_id.currency_id, fee.product_uom_qty, fee.product_id, self.partner_id)
                for c in tax_calculate['taxes']:
                    val += c['amount']
        self.amount_tax = val

    @api.one
    @api.depends('amount_untaxed', 'amount_tax')
    def _amount_total(self):
        self.amount_total = self.pricelist_id.currency_id.round(self.amount_untaxed + self.amount_tax)

    _sql_constraints = [
        ('name', 'unique (name)', 'The name of the Repair Order must be unique!'),
    ]

    @api.onchange('product_id')
    def onchange_product_id(self):
        self.guarantee_limit = False
        self.lot_id = False
        if self.product_id:
            self.product_uom = self.product_id.uom_id.id

    @api.onchange('product_uom')
    def onchange_product_uom(self):
        res = {}
        if not self.product_id or not self.product_uom:
            return res
        if self.product_uom.category_id != self.product_id.uom_id.category_id:
            res['warning'] = {'title': _('Warning'), 'message': _('The product unit of measure you chose has a different category than the product unit of measure.')}
            self.product_uom = self.product_id.uom_id.id
        return res

    @api.onchange('partner_id')
    def onchange_partner_id(self):
        if not self.partner_id:
            self.address_id = False
            self.partner_invoice_id = False
            self.pricelist_id = self.env['product.pricelist'].search([], limit=1).id
        else:
            addresses = self.partner_id.address_get(['delivery', 'invoice', 'contact'])
            self.address_id = addresses['delivery'] or addresses['contact']
            self.partner_invoice_id = addresses['invoice']
            self.pricelist_id = self.partner_id.property_product_pricelist.id

    @api.multi
    def button_dummy(self):
        # TDE FIXME: this button is very interesting
        return True

    @api.multi
    def action_repair_cancel_draft(self):
        if self.filtered(lambda repair: repair.state != 'cancel'):
            raise UserError(_("Repair must be canceled in order to reset it to draft."))
        self.mapped('operations').write({'state': 'draft'})
        return self.write({'state': 'draft'})

    def action_validate(self):
        self.ensure_one()
        precision = self.env['decimal.precision'].precision_get('Product Unit of Measure')
        available_qty_owner = self.env['stock.quant']._get_available_quantity(self.product_id, self.location_id, self.lot_id, owner_id=self.partner_id, strict=True)
        available_qty_noown = self.env['stock.quant']._get_available_quantity(self.product_id, self.location_id, self.lot_id, strict=True)
        for available_qty in [available_qty_owner, available_qty_noown]:
            if float_compare(available_qty, self.product_qty, precision_digits=precision) >= 0:
                return self.action_repair_confirm()
        else:
            return {
                'name': _('Insufficient Quantity'),
                'view_type': 'form',
                'view_mode': 'form',
                'res_model': 'stock.warn.insufficient.qty.repair',
                'view_id': self.env.ref('repair.stock_warn_insufficient_qty_repair_form_view').id,
                'type': 'ir.actions.act_window',
                'context': {
                    'default_product_id': self.product_id.id,
                    'default_location_id': self.location_id.id,
                    'default_repair_id': self.id
                    },
                'target': 'new'
            }

    @api.multi
    def action_repair_confirm(self):
        """ Repair order state is set to 'To be invoiced' when invoice method
        is 'Before repair' else state becomes 'Confirmed'.
        @param *arg: Arguments
        @return: True
        """
        if self.filtered(lambda repair: repair.state != 'draft'):
            raise UserError(_("Only draft repairs can be confirmed."))
        before_repair = self.filtered(lambda repair: repair.invoice_method == 'b4repair')
        before_repair.write({'state': '2binvoiced'})
        to_confirm = self - before_repair
        to_confirm_operations = to_confirm.mapped('operations')
        to_confirm_operations.write({'state': 'confirmed'})
        to_confirm.write({'state': 'confirmed'})
        return True

    @api.multi
    def action_repair_cancel(self):
        if self.filtered(lambda repair: repair.state == 'done'):
            raise UserError(_("Cannot cancel completed repairs."))
        if any(repair.invoiced for repair in self):
            raise UserError(_('The repair order is already invoiced.'))
        self.mapped('operations').write({'state': 'cancel'})
        return self.write({'state': 'cancel'})

    @api.multi
    def action_send_mail(self):
        self.ensure_one()
        template_id = self.env.ref('repair.mail_template_repair_quotation').id
        ctx = {
            'default_model': 'repair.order',
            'default_res_id': self.id,
            'default_use_template': bool(template_id),
            'default_template_id': template_id,
            'default_composition_mode': 'comment',
            'custom_layout': 'mail.mail_notification_light',
        }
        return {
            'type': 'ir.actions.act_window',
            'view_type': 'form',
            'view_mode': 'form',
            'res_model': 'mail.compose.message',
            'target': 'new',
            'context': ctx,
        }

    @api.multi
    def print_repair_order(self):
        return self.env.ref('repair.action_report_repair_order').report_action(self)

    def action_repair_invoice_create(self):
        for repair in self:
            repair._create_invoices()
            if repair.invoice_method == 'b4repair':
                repair.action_repair_ready()
            elif repair.invoice_method == 'after_repair':
                repair.write({'state': 'done'})
        return True

    @api.multi
    def _create_invoices(self, group=False):
        """ Creates invoice(s) for repair order.
        @param group: It is set to true when group invoice is to be generated.
        @return: Invoice Ids.
        """
        res = dict.fromkeys(self.ids, False)
        invoices_group = {}
        InvoiceLine = self.env['account.invoice.line']
        Invoice = self.env['account.invoice']
        for repair in self.filtered(lambda repair: repair.state not in ('draft', 'cancel') and not repair.invoice_id):
            if not repair.partner_id.id and not repair.partner_invoice_id.id:
                raise UserError(_('You have to select an invoice address in the repair form.'))
            comment = repair.quotation_notes
            if repair.invoice_method != 'none':
                if group and repair.partner_invoice_id.id in invoices_group:
                    invoice = invoices_group[repair.partner_invoice_id.id]
                    invoice.write({
                        'name': invoice.name + ', ' + repair.name,
                        'origin': invoice.origin + ', ' + repair.name,
                        'comment': (comment and (invoice.comment and invoice.comment + "\n" + comment or comment)) or (invoice.comment and invoice.comment or ''),
                    })
                else:
                    if not repair.partner_id.property_account_receivable_id:
                        raise UserError(_('No account defined for partner "%s".') % repair.partner_id.name)
                    invoice = Invoice.create({
                        'name': repair.name,
                        'origin': repair.name,
                        'type': 'out_invoice',
                        'account_id': repair.partner_id.property_account_receivable_id.id,
                        'partner_id': repair.partner_invoice_id.id or repair.partner_id.id,
                        'currency_id': repair.pricelist_id.currency_id.id,
                        'comment': repair.quotation_notes,
                        'fiscal_position_id': repair.partner_id.property_account_position_id.id
                    })
                    invoices_group[repair.partner_invoice_id.id] = invoice
                repair.write({'invoiced': True, 'invoice_id': invoice.id})

                for operation in repair.operations:
                    if operation.type == 'add':
                        if group:
                            name = repair.name + '-' + operation.name
                        else:
                            name = operation.name

                        if operation.product_id.property_account_income_id:
                            account_id = operation.product_id.property_account_income_id.id
                        elif operation.product_id.categ_id.property_account_income_categ_id:
                            account_id = operation.product_id.categ_id.property_account_income_categ_id.id
                        else:
                            raise UserError(_('No account defined for product "%s".') % operation.product_id.name)

                        invoice_line = InvoiceLine.create({
                            'invoice_id': invoice.id,
                            'name': name,
                            'origin': repair.name,
                            'account_id': account_id,
                            'quantity': operation.product_uom_qty,
                            'invoice_line_tax_ids': [(6, 0, [x.id for x in operation.tax_id])],
                            'uom_id': operation.product_uom.id,
                            'price_unit': operation.price_unit,
                            'price_subtotal': operation.product_uom_qty * operation.price_unit,
                            'product_id': operation.product_id and operation.product_id.id or False
                        })
                        operation.write({'invoiced': True, 'invoice_line_id': invoice_line.id})
                for fee in repair.fees_lines:
                    if group:
                        name = repair.name + '-' + fee.name
                    else:
                        name = fee.name
                    if not fee.product_id:
                        raise UserError(_('No product defined on fees.'))

                    if fee.product_id.property_account_income_id:
                        account_id = fee.product_id.property_account_income_id.id
                    elif fee.product_id.categ_id.property_account_income_categ_id:
                        account_id = fee.product_id.categ_id.property_account_income_categ_id.id
                    else:
                        raise UserError(_('No account defined for product "%s".') % fee.product_id.name)

                    invoice_line = InvoiceLine.create({
                        'invoice_id': invoice.id,
                        'name': name,
                        'origin': repair.name,
                        'account_id': account_id,
                        'quantity': fee.product_uom_qty,
                        'invoice_line_tax_ids': [(6, 0, [x.id for x in fee.tax_id])],
                        'uom_id': fee.product_uom.id,
                        'product_id': fee.product_id and fee.product_id.id or False,
                        'price_unit': fee.price_unit,
                        'price_subtotal': fee.product_uom_qty * fee.price_unit
                    })
                    fee.write({'invoiced': True, 'invoice_line_id': invoice_line.id})
                invoice.compute_taxes()
                res[repair.id] = invoice.id
        return res

    @api.multi
    def action_created_invoice(self):
        self.ensure_one()
        return {
            'name': _('Invoice created'),
            'type': 'ir.actions.act_window',
            'view_mode': 'form',
            'res_model': 'account.invoice',
            'view_id': self.env.ref('account.invoice_form').id,
            'target': 'current',
            'res_id': self.invoice_id.id,
            }

    def action_repair_ready(self):
        self.mapped('operations').write({'state': 'confirmed'})
        return self.write({'state': 'ready'})

    @api.multi
    def action_repair_start(self):
        """ Writes repair order state to 'Under Repair'
        @return: True
        """
        if self.filtered(lambda repair: repair.state not in ['confirmed', 'ready']):
            raise UserError(_("Repair must be confirmed before starting reparation."))
        self.mapped('operations').write({'state': 'confirmed'})
        return self.write({'state': 'under_repair'})

    @api.multi
    def action_repair_end(self):
        """ Writes repair order state to 'To be invoiced' if invoice method is
        After repair else state is set to 'Ready'.
        @return: True
        """
        if self.filtered(lambda repair: repair.state != 'under_repair'):
            raise UserError(_("Repair must be under repair in order to end reparation."))
        for repair in self:
            repair.write({'repaired': True})
            vals = {'state': 'done'}
            vals['move_id'] = repair.action_repair_done().get(repair.id)
            if not repair.invoiced and repair.invoice_method == 'after_repair':
                vals['state'] = '2binvoiced'
            repair.write(vals)
        return True

    @api.multi
    def action_repair_done(self):
        """ Creates stock move for operation and stock move for final product of repair order.
        @return: Move ids of final products

        """
        if self.filtered(lambda repair: not repair.repaired):
            raise UserError(_("Repair must be repaired in order to make the product moves."))
        res = {}
        precision = self.env['decimal.precision'].precision_get('Product Unit of Measure')
        Move = self.env['stock.move']
        for repair in self:
            # Try to create move with the appropriate owner
            owner_id = False
            available_qty_owner = self.env['stock.quant']._get_available_quantity(repair.product_id, repair.location_id, repair.lot_id, owner_id=repair.partner_id, strict=True)
            if float_compare(available_qty_owner, repair.product_qty, precision_digits=precision) >= 0:
                owner_id = repair.partner_id.id

            moves = self.env['stock.move']
            for operation in repair.operations:
                move = Move.create({
                    'name': repair.name,
                    'product_id': operation.product_id.id,
                    'product_uom_qty': operation.product_uom_qty,
                    'product_uom': operation.product_uom.id,
                    'partner_id': repair.address_id.id,
                    'location_id': operation.location_id.id,
                    'location_dest_id': operation.location_dest_id.id,
                    'move_line_ids': [(0, 0, {'product_id': operation.product_id.id,
                                           'lot_id': operation.lot_id.id, 
                                           'product_uom_qty': 0,  # bypass reservation here
                                           'product_uom_id': operation.product_uom.id,
                                           'qty_done': operation.product_uom_qty,
                                           'package_id': False,
                                           'result_package_id': False,
                                           'owner_id': owner_id,
                                           'location_id': operation.location_id.id, #TODO: owner stuff
                                           'location_dest_id': operation.location_dest_id.id,})],
                    'repair_id': repair.id,
                    'origin': repair.name,
                })
                moves |= move
                operation.write({'move_id': move.id, 'state': 'done'})
            move = Move.create({
                'name': repair.name,
                'product_id': repair.product_id.id,
                'product_uom': repair.product_uom.id or repair.product_id.uom_id.id,
                'product_uom_qty': repair.product_qty,
                'partner_id': repair.address_id.id,
                'location_id': repair.location_id.id,
                'location_dest_id': repair.location_id.id,
                'move_line_ids': [(0, 0, {'product_id': repair.product_id.id,
                                           'lot_id': repair.lot_id.id, 
                                           'product_uom_qty': 0,  # bypass reservation here
                                           'product_uom_id': repair.product_uom.id or repair.product_id.uom_id.id,
                                           'qty_done': repair.product_qty,
                                           'package_id': False,
                                           'result_package_id': False,
                                           'owner_id': owner_id,
                                           'location_id': repair.location_id.id, #TODO: owner stuff
                                           'location_dest_id': repair.location_id.id,})],
                'repair_id': repair.id,
                'origin': repair.name,
            })
            consumed_lines = moves.mapped('move_line_ids')
            produced_lines = move.move_line_ids
            moves |= move
            moves._action_done()
            produced_lines.write({'consume_line_ids': [(6, 0, consumed_lines.ids)]})
            res[repair.id] = move.id
        return res


class RepairLine(models.Model):
    _name = 'repair.line'
    _description = 'Repair Line (parts)'

    name = fields.Text('Description', required=True)
    repair_id = fields.Many2one(
        'repair.order', 'Repair Order Reference',
        index=True, ondelete='cascade')
    type = fields.Selection([
        ('add', 'Add'),
        ('remove', 'Remove')], 'Type', required=True)
    product_id = fields.Many2one('product.product', 'Product', required=True)
    invoiced = fields.Boolean('Invoiced', copy=False, readonly=True)
    price_unit = fields.Float('Unit Price', required=True, digits=dp.get_precision('Product Price'))
    price_subtotal = fields.Float('Subtotal', compute='_compute_price_subtotal', store=True, digits=0)
    tax_id = fields.Many2many(
        'account.tax', 'repair_operation_line_tax', 'repair_operation_line_id', 'tax_id', 'Taxes')
    product_uom_qty = fields.Float(
        'Quantity', default=1.0,
        digits=dp.get_precision('Product Unit of Measure'), required=True)
    product_uom = fields.Many2one(
        'uom.uom', 'Product Unit of Measure',
        required=True)
    invoice_line_id = fields.Many2one(
        'account.invoice.line', 'Invoice Line',
        copy=False, readonly=True)
    location_id = fields.Many2one(
        'stock.location', 'Source Location',
        index=True, required=True)
    location_dest_id = fields.Many2one(
        'stock.location', 'Dest. Location',
        index=True, required=True)
    move_id = fields.Many2one(
        'stock.move', 'Inventory Move',
        copy=False, readonly=True)
    lot_id = fields.Many2one('stock.production.lot', 'Lot/Serial')
    state = fields.Selection([
        ('draft', 'Draft'),
        ('confirmed', 'Confirmed'),
        ('done', 'Done'),
        ('cancel', 'Cancelled')], 'Status', default='draft',
        copy=False, readonly=True, required=True,
        help='The status of a repair line is set automatically to the one of the linked repair order.')

    @api.constrains('lot_id', 'product_id')
    def constrain_lot_id(self):
        for line in self.filtered(lambda x: x.product_id.tracking != 'none' and not x.lot_id):
            raise ValidationError(_("Serial number is required for operation line with product '%s'") % (line.product_id.name))

    @api.one
    @api.depends('price_unit', 'repair_id', 'product_uom_qty', 'product_id', 'repair_id.invoice_method')
    def _compute_price_subtotal(self):
        taxes = self.tax_id.compute_all(self.price_unit, self.repair_id.pricelist_id.currency_id, self.product_uom_qty, self.product_id, self.repair_id.partner_id)
        self.price_subtotal = taxes['total_excluded']

    @api.onchange('type', 'repair_id')
    def onchange_operation_type(self):
        """ On change of operation type it sets source location, destination location
        and to invoice field.
        @param product: Changed operation type.
        @param guarantee_limit: Guarantee limit of current record.
        @return: Dictionary of values.
        """
        if not self.type:
            self.location_id = False
            self.location_dest_id = False
        elif self.type == 'add':
            self.onchange_product_id()
            args = self.repair_id.company_id and [('company_id', '=', self.repair_id.company_id.id)] or []
            warehouse = self.env['stock.warehouse'].search(args, limit=1)
            self.location_id = warehouse.lot_stock_id
            self.location_dest_id = self.env['stock.location'].search([('usage', '=', 'production')], limit=1).id
        else:
            self.price_unit = 0.0
            self.tax_id = False
            self.location_id = self.env['stock.location'].search([('usage', '=', 'production')], limit=1).id
            self.location_dest_id = self.env['stock.location'].search([('scrap_location', '=', True)], limit=1).id

    @api.onchange('repair_id', 'product_id', 'product_uom_qty')
    def onchange_product_id(self):
        """ On change of product it sets product quantity, tax account, name,
        uom of product, unit price and price subtotal. """
        partner = self.repair_id.partner_id
        pricelist = self.repair_id.pricelist_id
        if not self.product_id or not self.product_uom_qty:
            return
        if self.product_id:
            if partner:
                self.name = self.product_id.with_context(lang=partner.lang).display_name
            else:
                self.name = self.product_id.display_name
            if self.product_id.description_sale:
                self.name += '\n' + self.product_id.description_sale
            self.product_uom = self.product_id.uom_id.id
        if self.type != 'remove':
            if partner and self.product_id:
                self.tax_id = partner.property_account_position_id.map_tax(self.product_id.taxes_id, self.product_id, partner).ids
            warning = False
            if not pricelist:
                warning = {
                    'title': _('No pricelist found.'),
                    'message':
                        _('You have to select a pricelist in the Repair form !\n Please set one before choosing a product.')}
            else:
                price = pricelist.get_product_price(self.product_id, self.product_uom_qty, partner)
                if price is False:
                    warning = {
                        'title': _('No valid pricelist line found.'),
                        'message':
                            _("Couldn't find a pricelist line matching this product and quantity.\nYou have to change either the product, the quantity or the pricelist.")}
                else:
                    self.price_unit = price
            if warning:
                return {'warning': warning}


class RepairFee(models.Model):
    _name = 'repair.fee'
    _description = 'Repair Fees'

    repair_id = fields.Many2one(
        'repair.order', 'Repair Order Reference',
        index=True, ondelete='cascade', required=True)
    name = fields.Text('Description', index=True, required=True)
    product_id = fields.Many2one('product.product', 'Product')
    product_uom_qty = fields.Float('Quantity', digits=dp.get_precision('Product Unit of Measure'), required=True, default=1.0)
    price_unit = fields.Float('Unit Price', required=True)
    product_uom = fields.Many2one('uom.uom', 'Product Unit of Measure', required=True)
    price_subtotal = fields.Float('Subtotal', compute='_compute_price_subtotal', store=True, digits=0)
    tax_id = fields.Many2many('account.tax', 'repair_fee_line_tax', 'repair_fee_line_id', 'tax_id', 'Taxes')
    invoice_line_id = fields.Many2one('account.invoice.line', 'Invoice Line', copy=False, readonly=True)
    invoiced = fields.Boolean('Invoiced', copy=False, readonly=True)

    @api.one
    @api.depends('price_unit', 'repair_id', 'product_uom_qty', 'product_id')
    def _compute_price_subtotal(self):
        taxes = self.tax_id.compute_all(self.price_unit, self.repair_id.pricelist_id.currency_id, self.product_uom_qty, self.product_id, self.repair_id.partner_id)
        self.price_subtotal = taxes['total_excluded']

    @api.onchange('repair_id', 'product_id', 'product_uom_qty')
    def onchange_product_id(self):
        """ On change of product it sets product quantity, tax account, name,
        uom of product, unit price and price subtotal. """
        if not self.product_id:
            return

        partner = self.repair_id.partner_id
        pricelist = self.repair_id.pricelist_id

        if partner and self.product_id:
            self.tax_id = partner.property_account_position_id.map_tax(self.product_id.taxes_id, self.product_id, partner).ids
        if self.product_id:
            self.name = self.product_id.display_name
            self.product_uom = self.product_id.uom_id.id
            if self.product_id.description_sale:
                self.name += '\n' + self.product_id.description_sale

        warning = False
        if not pricelist:
            warning = {
                'title': _('No pricelist found.'),
                'message':
                    _('You have to select a pricelist in the Repair form !\n Please set one before choosing a product.')}
        else:
            price = pricelist.get_product_price(self.product_id, self.product_uom_qty, partner)
            if price is False:
                warning = {
                    'title': _('No valid pricelist line found.'),
                    'message':
                        _("Couldn't find a pricelist line matching this product and quantity.\nYou have to change either the product, the quantity or the pricelist.")}
            else:
                self.price_unit = price
        if warning:
            return {'warning': warning}
