Created
September 12, 2021 17:26
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Hacker Rank Uefa
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| const https = require('https'); | |
| const url = require('url'); | |
| async function getTeams(year, k) { | |
| const teams = {}; | |
| const requestMaker = async (options) => new Promise((resolve, reject) => { | |
| let data = ''; | |
| const formattedUrl = url.format({ | |
| protocol: 'https', | |
| hostname: 'jsonmock.hackerrank.com', | |
| pathname: '/api/football_matches', | |
| query: { | |
| year: options.year, | |
| page: options.page, | |
| competition: 'UEFA Champions League' | |
| } | |
| }) | |
| const req = https.get(formattedUrl, res => { | |
| res.on('data', (chunk) => { | |
| data += chunk; | |
| }); | |
| res.on('end', () => { | |
| const parsedData = JSON.parse(data); | |
| if (res.statusCode == 200) resolve({ status: res.statusCode, data: parsedData }) | |
| else reject(new Error("Response status is not 200. Status: ", status)) | |
| }) | |
| }) | |
| req.on('error', error => { | |
| reject(error) | |
| }) | |
| req.end(); | |
| }); | |
| const dataGrouping = (dataArr, teamObj) => { | |
| dataArr.forEach(el => { | |
| if (teamObj[el.team1]) { | |
| teamObj[el.team1] = teamObj[el.team1] + 1 | |
| } else { | |
| teamObj[el.team1] = 1 | |
| } | |
| if (teamObj[el.team2]) { | |
| teamObj[el.team2] = teamObj[el.team2] + 1 | |
| } else { | |
| teamObj[el.team2] = 1 | |
| } | |
| }) | |
| } | |
| if (year >= 2011 && year <= 2015) { | |
| const { data } = await requestMaker({ year, page: 1 }); | |
| const pageSize = data.total_pages; | |
| dataGrouping(data.data, teams); | |
| const promises = []; | |
| for (let i = 2; i <= pageSize; i += 1) { | |
| promises.push(requestMaker({ year, page: i })); | |
| } | |
| try { | |
| const requestResults = await Promise.all(promises) | |
| requestResults.forEach(each => { | |
| dataGrouping(each.data.data, teams); | |
| }) | |
| const desiredTeams = Object.keys(teams).filter(i => teams[i] > k) | |
| return desiredTeams | |
| } catch (err) { | |
| console.log('Logic error: ', err) | |
| } | |
| } else { | |
| console.log('Year value can be from 2011 to 2015!') | |
| } | |
| } | |
| getTeams(2011, 12).then(res => { | |
| console.log(res) | |
| }); |
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