import subprocess

import os

import datetime

import sys

#================================

# the new version format is MAJORSAVE.MINORSAVE.BUGFIX

# bump MAJORSAVE every time there is a breaking change to the save format 

# bump MINORSAVE every time a save format change would stop save loading in older versions

# bump BUGFIX if save format is untouched

# bumps cause all later numbers to be reset. e.g. if you bump MINORSAVE then BUGFIX goes back to 0.

# save version to end 'pre' for unreleased builds with the version number being that of the next likely release

VERSION_TAG = "ginever-6.0.0"

#================================

if sys.platform == "darwin":

	hg_path = "/usr/local/bin/hg"

	hg_shell = True

else:

	hg_path = "hg"

	hg_shell = False

HG_BRANCH = subprocess.Popen(hg_path + " branch", cwd="src/", stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=hg_shell).stdout.read().decode('utf-8').strip()

HG_REVISION = subprocess.Popen(hg_path + " identify --num", cwd="src/", stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=hg_shell).stdout.read().decode('utf-8').strip()

HG_CHANGESET = subprocess.Popen(hg_path + " parents --template \"{node}\"", cwd="src/", stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=hg_shell).stdout.read().decode('utf-8').strip()

HG_CHANGESET_SHORT = subprocess.Popen(hg_path + " parents --template \"{node|short}\"", cwd="src/", stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=hg_shell).stdout.read().decode('utf-8').strip()

HG_REPO_OWNER = subprocess.Popen(hg_path + " showconfig ui.username", cwd="src/", stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=hg_shell).stdout.read().decode('utf-8').strip()

IS_TAGGED_VERSION = "pre" not in VERSION_TAG and "+" not in HG_REVISION

if "+" in HG_REVISION:

    HG_CHANGESET = HG_CHANGESET + "+"

    HG_CHANGESET_SHORT = HG_CHANGESET_SHORT + "+"

    HG_DATE = subprocess.Popen(hg_path + " identify --template \"{date|isodate}\"", cwd="src/", stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=hg_shell).stdout.read().decode('utf-8').strip()

else:

    HG_DATE = subprocess.Popen(hg_path + " parents --template \"{date|isodate}\"", cwd="src/", stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=hg_shell).stdout.read().decode('utf-8').strip()

if not IS_TAGGED_VERSION:

    VERSION_TAG = VERSION_TAG + "-h" + HG_CHANGESET_SHORT

# write in format  VERSION ISODATE MODIFIED HASH ISTAG ISSTABLETAG YEAR

version_file = open('.ottdrev-gpp', 'w')

version_file.write("{}\t{}\t{}\t{}\t{}\t{}\t{}\n".format(VERSION_TAG, HG_DATE[:10].replace("-",""), "4" if "+" in HG_REVISION else "3", HG_CHANGESET, "1" if IS_TAGGED_VERSION else "0", "0", HG_DATE[:4]))

version_file.close()

print('This is Ginever.net OpenTTD Patchpack hg r' + HG_REVISION + ' (' + HG_CHANGESET + ') in branch ' + HG_BRANCH)

print('This build is being performed by: ' + HG_REPO_OWNER)