#!/usr/bin/env python3
import glob
import os
import shutil
import subprocess
import sys
import tempfile

os.environ["PYTHONUNBUFFERED"] = "y"

sys.path.append(os.path.join(os.path.dirname(__file__), '..', ".."))
import version
from scripts.lib.zulip_tools import (
    DEPLOYMENTS_DIR,
    ENDC,
    FAIL,
    get_deployment_version,
    is_invalid_upgrade,
    make_deploy_path,
    overwrite_symlink,
)

if len(sys.argv) != 2:
    print(FAIL + f"Usage: {sys.argv[0]} <tarball>" + ENDC)
    sys.exit(1)

tarball_path = sys.argv[1]

deploy_path = make_deploy_path()

extract_path = tempfile.mkdtemp()
subprocess.check_call(["tar", "-xf", tarball_path, "-C", extract_path])

new_version = get_deployment_version(extract_path)
current_version = version.ZULIP_VERSION
if is_invalid_upgrade(current_version, new_version):
    print(
        FAIL + "Your current version is very old. Please first upgrade to version "
        "1.4.3 and then upgrade to {}.".format(new_version) + ENDC
    )
    shutil.rmtree(extract_path)
    sys.exit(1)

shutil.move(glob.glob(os.path.join(extract_path, "zulip-server-*"))[0], deploy_path)
os.rmdir(extract_path)
overwrite_symlink("/etc/zulip/settings.py", os.path.join(deploy_path, "zproject/prod_settings.py"))
overwrite_symlink(deploy_path, os.path.join(DEPLOYMENTS_DIR, "next"))

print(deploy_path)
sys.exit(0)