const ParameterizedSQL = require('loopback-connector').ParameterizedSQL;

module.exports = Self => {
    Self.remoteMethod('nodeAdd', {
        description: 'Returns the first shipped and landed possible for params',
        accessType: '',
        accepts: [{
            arg: 'parentFk',
            type: 'Number',
            required: false,
        },
        {
            arg: 'name',
            type: 'String',
            required: true,
        }],
        returns: {
            type: 'object',
            root: true
        },
        http: {
            path: `/nodeAdd`,
            verb: 'POST'
        }
    });

    Self.nodeAdd = async(parentFk = 1, name) => {
        let stmts = [];
        let conn = Self.dataSource.connector;
        let nodeIndex = stmts.push(new ParameterizedSQL(
            `CALL nst.NodeAdd('vn', 'department', ?, ?)`, [parentFk, name])) - 1;

        stmts.push(`CALL nst.nodeRecalc('vn', 'department')`);


        let sql = ParameterizedSQL.join(stmts, ';');
        let result = await conn.executeStmt(sql);
        let [node] = result[nodeIndex];

        return node;
    };
};