module.exports = Self => {
    Self.remoteMethodCtx('refund', {
        description: 'Create refund tickets with sales and services if provided',
        accessType: 'WRITE',
        accepts: [
            {
                arg: 'ref',
                type: 'string',
                description: 'The invoice reference',
                required: true
            },
            {
                arg: 'withWarehouse',
                type: 'boolean',
                required: true
            }
        ],
        returns: {
            type: ['number'],
            root: true
        },
        http: {
            path: '/refund',
            verb: 'post'
        }
    });

    Self.refund = async(ctx, ref, withWarehouse, options) => {
        const models = Self.app.models;
        const myOptions = {};
        let tx;

        if (typeof options == 'object')
            Object.assign(myOptions, options);

        if (!myOptions.transaction) {
            tx = await Self.beginTransaction({});
            myOptions.transaction = tx;
        }

        try {
            const filter = {where: {refFk: ref}};
            const tickets = await models.Ticket.find(filter, myOptions);

            const ticketsIds = tickets.map(ticket => ticket.id);
            const refundedTickets = await models.Ticket.refund(ctx, ticketsIds, withWarehouse, myOptions);

            if (tx) await tx.commit();

            return refundedTickets;
        } catch (e) {
            if (tx) await tx.rollback();
            throw e;
        }
    };
};