myheats

utils.js (4204B)

---

 const api_uri = import.meta.env.VITE_API_URI
 const api_port = import.meta.env.VITE_API_PORT
 
 export const exportHeatsToCSV = async function(e, { heats }) {
   e.preventDefault()
 
   // csv header
   let csv = "created_at,name,location,planned_start\n"
 
   // append athlete data
   for (let i = 0; i < heats.length; i++) {
     csv += heats[i].created_at + "," + heats[i].name+ "," + heats[i].location+ ","
       + heats[i].planned_start+ "\n"
   }
 
   exportCSV(csv, "heats")
 }
 
 export const exportAthletesToCSV = async function(e, { athletes }) {
   e.preventDefault()
 
   // csv header
   let csv = "created_at,nr,firstname,lastname,birthday,school\n"
 
   // append athlete data
   for (let i = 0; i < athletes.length; i++) {
     csv += athletes[i].created_at + "," + athletes[i].nr+ "," + athletes[i].firstname+ ","
       + athletes[i].lastname+ "," + athletes[i].birthday+ "," + athletes[i].school + "\n"
   }
 
   exportCSV(csv, "athletes")
 }
 
 export const exportLeaderboardToCSV = async function(e, leaderboard, heatSelection, rankingComp) {
   e.preventDefault()
 
   if (leaderboard.length === 0) {
     alert('Leaderboard is empty, nothing to export')
     return
   }
 
   // concatenate heat labels
   const heatNames = heatSelection.map(h => h.label)
 
   // rank leaderboard by selected comparator for each entry i in the board,
   // for every heat h
   const heatSummaries = leaderboard.sort(rankByHeat(rankingComp)).map(i =>
     heatSelection.map(h => formatScores(i, h))
   )
 
   // csv header
   let csv = "rank,start_nr,firstname,lastname,birthday,school,"
              + heatNames + "," + "best,worst,total\n"
 
   // append leaderboard score results
   for (let i = 0; i < leaderboard.length; i++) {
     csv += i+1 + "," + leaderboard[i].nr + "," + leaderboard[i].firstname + "," + leaderboard[i].lastname + ","
       + leaderboard[i].birthday + "," + leaderboard[i].school + ","
       + heatSummaries[i] + ","
       + leaderboard[i].bestHeat + "," + leaderboard[i].worstHeat + "," + leaderboard[i].sum + "\n"
   }
 
   exportCSV(csv, "scores")
 }
 
 // define the ranking logic
 export const rankByHeat = function(rankingComp) {
   return function(a, b) {
     // rank by chosen heat or ranking comparator
     for (const r of rankingComp) {
       switch(r.value) {
         case 'start':
           // rank by start number
           return b.nr < a.nr
         case 'best':
           if (b.bestHeat - a.bestHeat !== 0) {
             // rank by best heat first
             return b.bestHeat - a.bestHeat
           }
           // rank by least worst heat for identical best heats
           return b.worstHeat - a.worstHeat
         case 'worst':
           // rank by worst heat
           return b.worstHeat - a.worstHeat
         case 'total':
           // rank by total sum across heats
           return b.sum - a.sum
         default:
           // rank by heat totals
           let aHeatTotal = a.heats.find(h => h.heatId === r.value)?.summary
           let bHeatTotal = b.heats.find(h => h.heatId === r.value)?.summary
           return bHeatTotal - aHeatTotal
       }
     }
   }
 }
 
 // Scores concat with "+" for leaderboard entry i and heat h
 export const getScores = function(i, h) {
   const scores = i.heats.find(heat => heat.heatId === h.value)?.scores?.map(s => s.score.toFixed(1)).join(" + ")
   return scores
 }
 // Returns formatted string with summed scores and summary for leaderboard
 // entry i and heat h
 export const formatScores = function(i, h) {
   const scores = getScores(i, h)
   if (scores) {
     // get individual scores of the heat and score sum
     return getScores(i, h) + " = " + i.heats.find(heat => heat.heatId === h.value)?.summary.toFixed(1)
   } else {
     return NaN.toString()
   }
 }
 
 // export CSV as blob
 const exportCSV = function(csv, fileSlug) {
   // create blob from csv
   const blob = new Blob([csv], { type: 'text/csv;charset=utf-8;' })
 
   // download blob
   const url = URL.createObjectURL(blob)
   const link = document.createElement('a')
   link.href = url
   link.download = fileSlug + "-" + new Date().toISOString() + ".csv"
   document.body.appendChild(link)
   link.click()
   document.body.removeChild(link)
   // let browser know not to keep the reference to the file
   URL.revokeObjectURL(url)
 }