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

module.exports = Self => {
    Self.remoteMethodCtx('transferInvoice', {
        description: 'Transfer an issued invoice to another client',
        accessType: 'WRITE',
        accepts: [
            {
                arg: 'id',
                type: 'number',
                required: true,
                description: 'Issued invoice id'
            },
            {
                arg: 'ref',
                type: 'string',
                required: true
            },
            {
                arg: 'newClientFk',
                type: 'number',
                required: true
            },
            {
                arg: 'cplusRectificationId',
                type: 'number',
                required: true
            },
            {
                arg: 'siiTypeInvoiceOutId',
                type: 'number',
                required: true
            },
            {
                arg: 'invoiceCorrectionTypeId',
                type: 'number',
                required: true
            },
        ],
        returns: {
            type: 'boolean',
            root: true
        },
        http: {
            path: '/transferInvoice',
            verb: 'post'
        }
    });

    Self.transferInvoice = async(ctx, options) => {
        const models = Self.app.models;
        const myOptions = {userId: ctx.req.accessToken.userId};
        const args = ctx.args;
        let tx;
        if (typeof options == 'object')
            Object.assign(myOptions, options);

        const {clientFk} = await models.InvoiceOut.findById(args.id);

        if (clientFk == args.newClientFk)
            throw new UserError(`Select a different client`);

        if (!myOptions.transaction) {
            tx = await Self.beginTransaction({});
            myOptions.transaction = tx;
        }
        try {
            const filterRef = {where: {refFk: args.ref}};
            const tickets = await models.Ticket.find(filterRef, myOptions);
            const ticketsIds = tickets.map(ticket => ticket.id);
            await models.Ticket.refund(ctx, ticketsIds, null, myOptions);

            const filterTicket = {where: {ticketFk: {inq: ticketsIds}}};

            const services = await models.TicketService.find(filterTicket, myOptions);
            const servicesIds = services.map(service => service.id);

            const sales = await models.Sale.find(filterTicket, myOptions);
            const salesIds = sales.map(sale => sale.id);

            const clonedTickets = await models.Sale.clone(ctx, salesIds, servicesIds, null, false, false, myOptions);
            const clonedTicketIds = [];

            for (const clonedTicket of clonedTickets) {
                await clonedTicket.updateAttribute('clientFk', args.newClientFk, myOptions);
                clonedTicketIds.push(clonedTicket.id);
            }

            const invoiceIds = await models.Ticket.invoiceTickets(ctx, clonedTicketIds, myOptions);
            const [invoiceId] = invoiceIds;

            await models.InvoiceCorrection.create({
                correctingFk: invoiceId,
                correctedFk: args.id,
                cplusRectificationTypeFk: args.cplusRectificationId,
                siiTypeInvoiceOutFk: args.siiTypeInvoiceOutId,
                invoiceCorrectionTypeFk: args.invoiceCorrectionTypeId
            }, myOptions);

            if (tx) {
                await tx.commit();
                await models.InvoiceOut.makePdfAndNotify(ctx, invoiceId, null);
            }

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