#!/bin/bash

# Use this script to provision dependencies for your Zulip installation.
# This script is idempotent, so it can be restarted at any time, and it
# will usually run fairly quickly when your dependencies are up to date.

set -e
if [ "$EUID" -eq 0 ]; then
    echo "Error: The provision script must not be run as root" >&2
    exit 1
fi

#Make the script independent of the location from where it is
#executed
PARENT_PATH=$( cd "$(dirname "${BASH_SOURCE}")" ; pwd -P )
cd "$PARENT_PATH"
mkdir -p ../var/log
LOG_PATH="../var/log/provision.log"

echo "PROVISIONING STARTING." >> $LOG_PATH

PROVISION_PATH="./lib/provision.py"
if [ -n "$TRAVIS" ]; then
    # In CI, we let PATH provide the Python version.
    PROVISION_CMD=("$PROVISION_PATH")
else
    # In dev, we force Python 3.
    PROVISION_CMD=(python3 "$PROVISION_PATH")
fi

# PYTHONUNBUFFERED is important to ensure that tracebacks don't get
# lost far above where they should be in the output.
export PYTHONUNBUFFERED=1
"${PROVISION_CMD[@]}" "$@" 2>&1 | tee -a "$LOG_PATH"
failed=${PIPESTATUS[0]}

if [ $failed = 1 ]; then
    echo -e "\033[0;31m"
    echo "Provisioning failed!"
    echo
    echo "* Look at the traceback(s) above to find more about the errors."
    echo "* Resolve the errors or get help on chat."
    echo "* If you can fix this yourself, you can re-run tools/provision at any time."
    echo "* Logs are here: zulip/var/log/provision.log"
    echo -e "\033[0m"
    exit 1
elif [ "$VIRTUAL_ENV" != "/srv/zulip-py3-venv" ] && [ -z "$TRAVIS" ]; then
    echo -e "\033[0;31m"
    echo "WARNING: This shell does not have the Python 3 virtualenv activated."
    echo "Zulip commands will fail."
    echo
    echo "To update the shell, run:"
    echo "    source /srv/zulip-py3-venv/bin/activate"
    echo "or just close this shell and start a new one."
    echo -en "\033[0m"
fi
exit 0