const database = require('./../database');





class Gender {
    constructor(name) {
        this.name = name;
    }
}
const MALE = new Gender("male");
const FEMALE = new Gender("female");



async function retrieveBySport(sportID) {
    const query = `SELECT DISTINCT(gender)
            FROM scores.divisions
            WHERE sport_id = $1;`;
    const table = await database.executeQuery(query, [sportID]);

    const gendersList = [];

    if(table.length == 0) {
        return gendersList;
    }
    if(table.length == 2) {
        gendersList.push(FEMALE);
        gendersList.push(MALE);
        return gendersList;
    }
    else if(table[0][0] = "F") {
        gendersList.push(FEMALE);
        return gendersList;
    }
    else if(table[0][0] = "M") {
        gendersList.push(MALE);
        return gendersList;
    }
}




exports.MALE = MALE;
exports.FEMALE = FEMALE;
exports.retrieveBySport = retrieveBySport;