#!/usr/bin/python
from __future__ import division
import subprocess
import sys
import time


def format_interval(secs):
    if secs < 4*60*60:
        return '{:.0f} minutes'.format(secs / 60)
    if secs < 48*60*60:
        return '{:.0f} hours'.format(secs / 3600)
    return '{:.0f} days'.format(secs / 86400)


if __name__ == '__main__':
    now = time.time()
    dates = [now]

    kid = subprocess.Popen('git log --pretty=raw'.split(),
                           stdout=subprocess.PIPE)

    for line in kid.stdout:
        words = line.split()
        if words[:1] != ['author']:
            continue
        dates.append(int(words[-2]))

    dates.sort()

    stack=[]
    for i in range(1, len(dates)):
        diff = (dates[i] - dates[i-1], dates[i])
        #print(diff)
        while stack and stack[-1] < diff:
            stack.pop()
        stack.append(diff)

    print('This repository is currently inactive for {}.'.format(format_interval(stack[-1][0])))
    for gap, when in stack[::-1][1:]:
        print("{} UTC, {} ago, ended a gap in development of {}.".format(
            time.asctime(time.gmtime(when)),
            format_interval(now-when),
            format_interval(gap)))
    print("The repository began on {} and contains {} commits.".format(
        time.asctime(time.gmtime(dates[0])), len(dates)))