LeagueStats/server/app/Helpers/StatsHelper.js

'use strict'

const MatchHelper = use('App/Helpers/MatchHelper')
const MatchRepository = make('App/Repositories/MatchRepository')

class StatsHelper {
  constructor() {
    this.matchRepository = MatchRepository
  }

  async getSummonerStats(account) {
    const globalStats = await this.matchRepository.globalStats(account.puuid)
    const gamemodeStats = await this.matchRepository.gamemodeStats(account.puuid)
    const roleStats = await this.matchRepository.roleStats(account.puuid)
    // Check if all roles are in the array
    const roles = ['TOP', 'JUNGLE', 'MIDDLE', 'BOTTOM', 'SUPPORT']
    for (const role of roles) {
      if (!roleStats.find(r => r.role === role)) {
        roleStats.push({
          count: 0,
          losses: 0,
          role,
          wins: 0
        })
      }
    }
    const championClassStats = await this.matchRepository.championClassStats(account.puuid)
    const mates = await this.matchRepository.mates(account.puuid, account.name)

    return {
      global: globalStats[0],
      league: gamemodeStats,
      role: roleStats.sort(this.sortTeamByRole),
      class: championClassStats,
      mates,
    }
  }

  /**
  * Sort array of Roles according to a specific order
  * @param a first role
  * @param b second role
  */
  sortTeamByRole(a, b) {
    const sortingArr = ['TOP', 'JUNGLE', 'MIDDLE', 'BOTTOM', 'SUPPORT']
    return sortingArr.indexOf(a.role) - sortingArr.indexOf(b.role)
  }
}

module.exports = new StatsHelper()