const UserError = require('vn-loopback/util/user-error');
module.exports = Self => {
    Self.remoteMethodCtx('updateInTime', {
        description: 'Updates the corresponding registry if the worker has been registered in the last few hours',
        accessType: 'WRITE',
        accepts: [
            {
                arg: 'plate',
                type: 'string',
            }
        ],
        http: {
            path: `/updateInTime`,
            verb: 'POST'
        }
    });

    Self.updateInTime = async(ctx, plate, options) => {
        const models = Self.app.models;
        const userId = ctx.req.accessToken.userId;

        let tx;
        const myOptions = {};

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

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

        try {
            const machine = await models.Machine.findOne({
                fields: ['id', 'plate'],
                where: {plate}
            }, myOptions);
            if (!machine) throw new Error(`plate ${plate} does not exist`);

            const {maxHours} = await models.MachineWorkerConfig.findOne({fields: ['maxHours']}, myOptions);
            const machineWorker = await Self.findOne({
                where: {
                    machineFk: machine.id,
                    outTime: null,
                }
            }, myOptions);

            if (machineWorker) {
                const hoursDifference = (Date.vnNew() - machineWorker.inTime) / (60 * 60 * 1000);
                const isHimSelf = userId == machineWorker.workerFk;

                if (maxHours > hoursDifference && !isHimSelf) throw new UserError('Esta máquina ya está en uso.');

                await machineWorker.updateAttributes({
                    outTime: Date.vnNew()
                }, myOptions);

                if (!isHimSelf) await models.MachineWorker.create({machineFk: machine.id, workerFk: userId}, myOptions);
            } else
                await models.MachineWorker.create({machineFk: machine.id, workerFk: userId}, myOptions);

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