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;
        const $t = ctx.req.__;

        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($t('the plate does not exist', {plate}));

            const machineWorker = await Self.findOne({
                where: {
                    or: [{machineFk: machine.id}, {workerFk: userId}],
                    outTime: null,
                }
            }, myOptions);

            const {maxHours} = await models.MachineWorkerConfig.findOne({fields: ['maxHours']}, myOptions);
            const hoursDifference = (Date.vnNow() - machineWorker.inTime.getTime()) / (60 * 60 * 1000);

            if (machineWorker) {
                const isHimself = userId == machineWorker.workerFk;
                const isSameMachine = machine.id == machineWorker.machineFk;

                if (hoursDifference < maxHours && !isHimself)
                    throw new UserError($t('This machine is already in use.'));

                if (hoursDifference < maxHours && isHimself && !isSameMachine)
                    throw new UserError($t('You are already using a machine'));

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

            if (!machineWorker || hoursDifference >= maxHours)
                await models.MachineWorker.create({machineFk: machine.id, workerFk: userId}, myOptions);

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