Main.kt

package net.minikloon.worktime

import edu.nyu.cs.javagit.api.DotGit
import edu.nyu.cs.javagit.api.commands.GitLogResponse
import java.text.SimpleDateFormat
import java.util.*

val gitDateFormat = SimpleDateFormat("EEE MMM d HH:mm:ss yyyy Z")
fun main(args: Array<String>) {
    val git = DotGit.getInstance("Skywars")
    
    val hoursOfDay = mutableMapOf<Int, Int>()
    
    val cal = Calendar.getInstance()
    git.log
            .filter { commit -> commit.author.contains("Minikloon") && ageInDays(commit) < 60 }
            .forEach { commit ->
                cal.time = gitDateFormat.parse(commit.dateString)
                val hourOfDay = cal.get(Calendar.HOUR_OF_DAY)
                hoursOfDay.compute(hourOfDay) { k, v -> if (v == null) 1 else v + 1 }
            }
    
    for(i in 0..23) {
        println("$i: ${hoursOfDay[i]}")
    }
}

private fun ageInDays(commit: GitLogResponse.Commit) : Long {
    return (System.currentTimeMillis() - gitDateFormat.parse(commit.dateString).time) / (1000 * 60 * 60 * 24)
}