module.exports = Self => {
    const models = require('vn-loopback/server/server').models;
    Self.remoteMethod('getItemsByReviewOrder', {
        description:
            'Get list items if they are ordered by pickingOrder and their created regarding where they will be parked',
        accessType: 'READ',
        accepts: [{
            arg: 'shelving',
            type: 'string',
            required: true,
            description: 'Shelving code'
        },
        {
            arg: 'parking',
            type: 'string',
            required: true,
            description: 'Parking code'
        },
        {
            arg: 'itemFk',
            type: 'number',
            description: 'Item id'
        },
        ],
        returns: {
            type: 'Array',
            root: true
        },
        http: {
            path: `/getItemsByReviewOrder`,
            verb: 'GET'
        }
    });

    Self.getItemsByReviewOrder = async(shelving, parking, itemFk, options) => {
        const myOptions = {};
        if (typeof options == 'object')
            Object.assign(myOptions, options);

        const config = await models.ProductionConfig.findOne();
        const hoursToCompare = config['itemOrderReviewHours'];
        if (!hoursToCompare) return [];

        const parkingItem = await models.Parking.findOne({where: {code: parking}}, myOptions);
        if (!parkingItem) return [];
        const pickingOrderToCompare = parkingItem['pickingOrder'];

        const result = await Self.rawSql(`
        WITH currentItemShelving AS (
                SELECT is2.created, is2.itemFk, sh.code
                FROM vn.itemShelving is2
                    JOIN vn.shelving sh ON sh.id = is2.shelvingFk
                    LEFT JOIN vn.parking p ON p.id = sh.parkingFk
                    LEFT JOIN vn.sector s ON s.id = p.sectorFk
                WHERE sh.code = ? AND (? IS NULL OR is2.itemFk = ?)
            ),
            itemShelvings AS (
                SELECT is2.itemFk, is2.created, sh.code, p.pickingOrder, p.code AS parkingFk
                FROM vn.itemShelving is2
                    JOIN currentItemShelving ai ON is2.itemFk = ai.itemFk
                    JOIN vn.shelving sh ON sh.id = is2.shelvingFk AND ai.code <> sh.code
                    JOIN vn.parking p ON p.id = sh.parkingFk
                    JOIN vn.sector s ON s.id = p.sectorFk
            ),
            parkingDestiny AS (
                SELECT ? AS pickingOrder
            )
        SELECT ish.*,
            CASE 
                WHEN ish.pickingOrder < d.pickingOrder AND aish.created < ish.created 
                    AND ABS(TIMESTAMPDIFF(HOUR, aish.created, ish.created)) > ? THEN "old"
                WHEN ish.pickingOrder > d.pickingOrder AND aish.created > ish.created 
                    AND ABS(TIMESTAMPDIFF(HOUR, aish.created, ish.created)) > ? THEN "new"
            END AS itemCreated
        FROM itemShelvings ish
            JOIN parkingDestiny d ON d.pickingOrder IS NOT NULL
            JOIN currentItemShelving aish ON ish.itemFk = aish.itemFk
        WHERE ABS(TIMESTAMPDIFF(HOUR, aish.created, ish.created)) > ?
            AND (
                (ish.pickingOrder < d.pickingOrder AND aish.created < ish.created) 
                OR 
                (ish.pickingOrder > d.pickingOrder AND aish.created > ish.created)
            );
            `,
        [shelving, itemFk, itemFk, pickingOrderToCompare,
            hoursToCompare, hoursToCompare, hoursToCompare, hoursToCompare], myOptions);
        return result;
    };
};