Add Backend Project and add Tournament Detail Page
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@@ -0,0 +1,118 @@
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import {Tournament} from '../models/tournament';
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import fs from 'fs';
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import path from 'path';
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import {Database, RunResult} from "sqlite3";
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export class TournamentService {
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private csvFilename = 'csv/tournaments.csv';
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private dbFilename = 'tournaments.sqlite';
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private db: Database;
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constructor() {
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fs.unlinkSync(this.dbFilename);
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this.db = new Database(this.dbFilename);
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this.db.serialize(() => {
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this.db.run(`CREATE TABLE IF NOT EXISTS Tournaments
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(
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id
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INTEGER
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PRIMARY
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KEY
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AUTOINCREMENT,
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name
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TEXT,
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description
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TEXT,
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maxTeamAmount
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INTEGER,
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currentTeamAmount
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INTEGER
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)`);
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})
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this.seedDb();
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}
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private seedDb() {
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fs.readFile(path.join(process.cwd(), "dist", this.csvFilename), 'utf-8', (_, data) => {
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const entries = data.split('\n');
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entries.shift();
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const statement = this.db.prepare("INSERT INTO Tournaments ( name, description, maxTeamAmount, currentTeamAmount) VALUES (?, ?, ?, ?)");
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entries.forEach(line => {
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if (line) {
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const parts = line.split(',');
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const tournament = {
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id: 0,
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name: parts[0].trim(),
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description: parts[1].trim(),
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maxTeamAmount: +parts[2],
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currentTeamAmount: +parts[3]
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} as Tournament;
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statement.run(tournament.name, tournament.description, tournament.maxTeamAmount, tournament.currentTeamAmount);
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console.log(tournament)
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}
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});
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statement.finalize();
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});
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}
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getAllTournaments(): Promise<Tournament[]> {
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return new Promise<Tournament[]>((resolve, reject) => {
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this.db.all(`SELECT *
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FROM Tournaments`,
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(err: RunResult, rows: Tournament[]) => {
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if (!err) {
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resolve(rows);
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}
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reject(err);
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});
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});
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}
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getBookById(id: number): Promise<Tournament> {
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return new Promise<Tournament>((resolve, reject) => {
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this.db.get(`Select *
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From Tournaments
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WHERE id = ${id}`, (err: RunResult, book: Tournament) => {
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if (!err) {
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resolve(book);
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}
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reject(err);
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});
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})
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}
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addBook(tournament: Tournament): Promise<void> {
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return new Promise<void>((resolve, reject) => {
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const statement = this.db.prepare('Insert Into Tournaments (name, description, maxTeamAmount, currentTeamAmount) VALUES (?, ?, ?, ?)')
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statement.run(tournament.name, tournament.description, tournament.maxTeamAmount, tournament.currentTeamAmount);
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resolve();
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})
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}
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updateBook(id: number, updatedBook: Tournament): Promise<void> {
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return new Promise((resolve, reject) => {
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this.db.run(`Update Tournaments
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Set name = $name,
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description = $description,
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maxTeamAmount = $maxTeamAmount,
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currentTeamAmount = $currentTeamAmount
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where id = $id`,
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{
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$id: id,
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$description: updatedBook.description,
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$maxTeamAmount: updatedBook.maxTeamAmount,
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$currentTeamAmount: updatedBook.currentTeamAmount,
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});
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resolve();
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})
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}
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deleteBook(id: number): Promise<void> {
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return new Promise((resolve, reject) => {
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this.db.run('Delete From Tournaments where id = $id', {
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$id: id,
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});
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resolve();
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})
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}
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}
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