#!/usr/bin/env python3
import base64
import os
import subprocess
import sys

short_user = sys.argv[1]
api_key = sys.argv[2]
ccache_data_encoded = sys.argv[3]

# Update the Kerberos ticket cache file
program_name = f"zmirror-{short_user}"
with open(f"/home/zulip/ccache/{program_name}", "wb") as f:
    f.write(base64.b64decode(ccache_data_encoded))

# Setup API key
api_key_path = f"/home/zulip/api-keys/{program_name}"
open(api_key_path, "w").write(api_key + "\n")

# Setup supervisord configuration
supervisor_path = f"/etc/supervisor/conf.d/zulip/{program_name}.conf"
template = os.path.join(os.path.dirname(__file__), "zmirror_private.conf.template")
template_data = open(template).read()
session_path = f"/home/zulip/zephyr_sessions/{program_name}"

# Preserve mail zephyrs forwarding setting across rewriting the config file

try:
    if "--forward-mail-zephyrs" in open(supervisor_path).read():
        template_data = template_data.replace(
            "--use-sessions", "--use-sessions --forward-mail-zephyrs"
        )
except Exception:
    pass
open(supervisor_path, "w").write(template_data.replace("USERNAME", short_user))

# Delete your session
subprocess.check_call(["rm", "-f", session_path])
# Update your supervisor config, which may restart your mirror
subprocess.check_call(["supervisorctl", "reread"])
subprocess.check_call(["supervisorctl", "update"])
# Restart your mirror, in case it wasn't restarted by the previous
# (Otherwise if the mirror lost subs, this would do nothing)
# TODO: check whether we JUST restarted it first
subprocess.check_call(["supervisorctl", "restart", program_name])
