let UserError = require('vn-loopback/util/user-error');

module.exports = Self => {
    Self.remoteMethodCtx('deleteSales', {
        description: 'Deletes the selected sales',
        accessType: 'WRITE',
        accepts: [{
            arg: 'sales',
            type: ['object'],
            required: true,
            description: 'The sales to remove'
        },
        {
            arg: 'ticketId',
            type: 'number',
            required: true,
            description: 'The ticket id'
        }],
        returns: {
            type: ['object'],
            root: true
        },
        http: {
            path: `/deleteSales`,
            verb: 'POST'
        }
    });

    Self.deleteSales = async(ctx, sales, ticketId) => {
        const $t = ctx.req.__; // $translate
        const models = Self.app.models;

        const canEditSales = await models.Sale.canEdit(ctx, sales);

        const ticket = await models.Ticket.findById(ticketId, {
            include: {
                relation: 'client',
                scope: {
                    include: {
                        relation: 'salesPersonUser',
                        scope: {
                            fields: ['id', 'name']
                        }
                    }
                }
            }
        });

        const isTicketEditable = await models.Ticket.isEditable(ctx, ticketId);
        if (!isTicketEditable)
            throw new UserError(`The sales of this ticket can't be modified`);

        if (!canEditSales)
            throw new UserError(`Sale(s) blocked, please contact production`);

        const promises = [];
        let deletions = '';
        for (let sale of sales) {
            const deletedSale = models.Sale.destroyById(sale.id);
            deletions += `\r\n-${sale.itemFk}: ${sale.concept} (${sale.quantity})`;

            promises.push(deletedSale);
        }

        const salesPerson = ticket.client().salesPersonUser();
        if (salesPerson) {
            const origin = ctx.req.headers.origin;

            const message = $t('Deleted sales from ticket', {
                ticketId: ticketId,
                ticketUrl: `${origin}/#!/ticket/${ticketId}/sale`,
                deletions: deletions
            });
            await models.Chat.sendCheckingPresence(ctx, salesPerson.id, message);
        }

        return Promise.all(promises);
    };
};