#!/usr/bin/env python3
""" Automaticky generator cisla verze
Automaticky generuje cislo verze z informaci, poskytnutych gitem
Copyright (c) 2019, 2020, 2021 xPablo.cz
Autor: Pavel Brychta

"""
import subprocess

dirty = False
branch = "HEAD"
build = "0"
try:
    version_parts = subprocess.check_output(["git", "describe", "--tags", "--dirty", "--long", "--always"]).decode().strip().split('-')
    branch = subprocess.check_output(["git", "rev-parse", "--abbrev-ref", "HEAD"]).decode().strip()
    if version_parts[-1] == "dirty":
        dirty = True
        version_parts.pop()

    if len(version_parts) >= 3:
        # zahodime abbrev
        version_parts.pop();
        build = version_parts.pop()
        version = '-'.join(version_parts)
    else:
        # neni zatim zadny tag
        version = '0.0.0'
        build = subprocess.check_output(["git", "rev-list", "--all", "--count"]).decode().strip()
except:
    version = 'x.x.x'

build = "" if build == "0" else "." + build
dirty_text = "" if not dirty else "m"
branch_text = "" if branch in ("master", "HEAD") else "[{}]".format(branch)

print("{}{}{}{}".format(version, build, dirty_text, branch_text))