const UserError = require('vn-loopback/util/user-error');
module.exports = Self => {
    Self.remoteMethodCtx('calculate', {
        description: 'Calculates the price of a sale and its components',
        accessType: 'WRITE',
        accepts: [{
            arg: 'id',
            description: 'The sale id',
            type: 'number',
            required: true,
            http: {source: 'path'}
        }],
        returns: {
            type: 'Number',
            root: true
        },
        http: {
            path: `/:id/calculate`,
            verb: 'post'
        }
    });

    Self.calculate = async(ctx, id) => {
        const models = Self.app.models;

        const sale = await Self.findById(id);
        const isEditable = await models.Ticket.isEditable(ctx, sale.ticketFk);

        if (!isEditable)
            throw new UserError(`The sales of this ticket can't be modified`);

        return Self.rawSql('CALL vn.ticketCalculateSale(?)', [id]);
    };
};