score-tracker/database/scores/teams.js

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





class Team {
    constructor(id, name, sportID) {
        this.id = id;
        this.name = name;
        this.sportID = sportID;
    }
}



async function add(name, sportID) {
    const query = `INSERT INTO scores.teams(team_name, sport_id)
            VALUES($1, $2)
            RETURNING team_id;`;
    const id = (await database.executeQuery(query, [name, sportID]))[0][0];
    return new Team(id, name);
}

async function rename(id, name) {
    const query = `UPDATE scores.teams
            SET team_name = $2
            WHERE team_id = $1;`;
    await database.executeQuery(query, [id, name]);
    return new Team(id, name);
}

async function remove(id) {
    const query = `DELETE FROM scores.teams
            WHERE team_id = $1
            RETURNING team_name;`;
    const name = (await database.executeQuery(query, [id]))[0][0];
    return new Team(id, name);
}

async function retrieve(sportID = undefined) {
    let table;

    if(sportID) {
        const query = `SELECT team_id, team_name, sport_id
            FROM scores.teams
            WHERE sport_id = $1
            ORDER BY team_name;`;
        table = await database.executeQuery(query, [sportID]);
    }
    else {
        const query = `SELECT team_id, team_name, sport_id
            FROM scores.teams
            ORDER BY
                sport_id,
                team_name;`;
        table = await database.executeQuery(query);
    }

    const teamsList = [];
    table.forEach((row) => {
        teamsList.push(new Team(row[0], row[1], row[2]));
    });
    return teamsList;
}

async function getFromID(id) {
    const query = `SELECT team_name, sport_id
            FROM scores.teams
            WHERE team_id = $1;`;
    const row = (await database.executeQuery(query, [id]))[0];
    return new Team(id, row[0], row[1]);
}





exports.add = add;
exports.rename = rename;
exports.remove = remove;
exports.retrieve = retrieve;
exports.getFromID = getFromID;