#!/usr/bin/python

import sys
import os
import time

log_fmt = '''{app} ({version}) stable; urgency=medium

{changes}
 -- Chenss <chenshisheng@reliachina.com>  {time}

'''

def lastLogInfo():
    appName = ""
    mainVersion = ""
    lastStr = ""
    with open("debian/changelog") as changelog:
        line = changelog.readline()
        if len(line) == 0:
            return ""

        syms = line.split(' ')
        appName = syms[0]
        verInfo = syms[1]
        lastStr = verInfo[1:-1]
    if '-' in lastStr:
        mainVersion = lastStr.split('-')[0]
    else:
        mainVersion = lastStr
    return appName, mainVersion


if __name__ == "__main__":
    app, lastMainVer = lastLogInfo()
    vp1, vp2, vp3 = lastMainVer.split('.')
    version = "{}.{}.{}-1".format(vp1, vp2, int(vp3) + 1)
    print("last version: {}.{}.{}".format(vp1, vp2, vp3))
    print("current version: {}".format(version))

    changes = ""
    with open(".git/COMMIT_EDITMSG", 'r') as msg:
        for line in msg.readlines():
            if len(line) == 0 or line.isspace() or line.startswith('#'):
                continue
            changes += "  * {}".format(line)

    # print(changes)
    lt = time.localtime()
    timeInfo = time.strftime("%a, %d %b %Y %H:%M:%S %z", lt)
    log = log_fmt.format(app=app, version=version, changes=changes, time=timeInfo)
    print("update changelog")
    # print(log)
    with open("debian/changelog", 'r+') as changelog:
        logs = changelog.readlines()
        logs.insert(0, log)
        changelog.seek(0)
        changelog.writelines(logs)
    os.system("git commit -a --amend")