salix/services/loopback/common/methods/client/activeBuyer.js

module.exports = Self => {
    Self.remoteMethod('activeBuyer', {
        description: 'Returns actives workers with Buyer role',
        accessType: 'READ',
        accepts: [{
            arg: 'filter',
            type: 'Object',
            required: false,
            description: 'Filter defining where and paginated data',
            http: {source: 'query'}
        }],
        returns: {
            type: 'Worker',
            root: true
        },
        http: {
            path: `/activeBuyer`,
            verb: 'get'
        }
    });

    Self.activeBuyer = async filter => {
        let sqlWhere = '';
        let sqlLimit = '';
        let sqlOffset = '';
        let params = [];

        if (filter.where) {
            if (filter.where.firstName) {
                sqlWhere = `AND (worker.firstName LIKE ? OR worker.name LIKE ?)`;
                let search = where.firstName.like;
                params.push(search);
                params.push(search);
            }
            if (filter.where.id) {
                sqlWhere = `AND worker.id = ?`;
                params.push(filter.where.id);
            }
        }

        if (filter.limit) {
            sqlLimit = `LIMIT ?`;
            params.push(filter.limit);
        }
        if (filter.skip) {
            sqlOffset = `OFFSET ?`;
            params.push(filter.skip);
        }

        let query =
            `SELECT worker.id, worker.firstName, worker.name
            FROM vn.worker
                JOIN account.user user ON user.id = worker.userFk
                JOIN account.role role ON role.name = 'buyer'
                JOIN account.roleRole inheritance ON inheritance.role = user.role AND inheritance.inheritsFrom = role.id
            WHERE user.active IS TRUE ${sqlWhere}
                ORDER BY worker.firstName ASC
                ${sqlLimit} ${sqlOffset}`;

        return await Self.rawSql(query, params);
    };
};