#!/bin/sh

# Populate config_distro.py. This has some default config, as well as anything
# provided by the user through the PGADMIN_CONFIG_* environment variables.
# Only update the file on first launch. The empty file is created during the
# container build so it can have the required ownership.
if [ `wc -m /pgadmin4/config_distro.py | awk '{ print $1 }'` = "0" ]; then
    cat << EOF > /pgadmin4/config_distro.py
CA_FILE = '/etc/ssl/certs/ca-certificates.crt'
LOG_FILE = '/dev/null'
HELP_PATH = '../../docs'
DEFAULT_BINARY_PATHS = {
        'pg': '/usr/local/pgsql-13'
}
EOF

    # This is a bit kludgy, but necessary as the container uses BusyBox/ash as
    # it's shell and not bash which would allow a much cleaner implementation
    for var in $(env | grep PGADMIN_CONFIG_ | cut -d "=" -f 1); do
        echo ${var#PGADMIN_CONFIG_} = $(eval "echo \$$var") >> /pgadmin4/config_distro.py
    done
fi

if [ ! -f /var/lib/pgadmin/pgadmin4.db ]; then
    if [ -z "${PGADMIN_DEFAULT_EMAIL}" -o -z "${PGADMIN_DEFAULT_PASSWORD}" ]; then
        echo 'You need to define the PGADMIN_DEFAULT_EMAIL and PGADMIN_DEFAULT_PASSWORD environment variables.'
        exit 1
    fi

    echo ${PGADMIN_DEFAULT_EMAIL} | grep -E "^[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,}$" > /dev/null
    if [ $? -ne 0 ]; then
        echo "'${PGADMIN_DEFAULT_EMAIL}' does not appear to be a valid email address. Please reset the PGADMIN_DEFAULT_EMAIL environment variable and try again."
        exit 1
    fi

    # Set the default username and password in a
    # backwards compatible way
    export PGADMIN_SETUP_EMAIL=${PGADMIN_DEFAULT_EMAIL}
    export PGADMIN_SETUP_PASSWORD=${PGADMIN_DEFAULT_PASSWORD}

    # Initialize DB before starting Gunicorn
    # Importing pgadmin4 (from this script) is enough
    /venv/bin/python3 run_pgadmin.py

    export PGADMIN_SERVER_JSON_FILE=${PGADMIN_SERVER_JSON_FILE:-/pgadmin4/servers.json}
    # Pre-load any required servers
    if [ -f "${PGADMIN_SERVER_JSON_FILE}" ]; then
        # When running in Desktop mode, no user is created
        # so we have to import servers anonymously
        if [ "${PGADMIN_CONFIG_SERVER_MODE}" = "False" ]; then
            /venv/bin/python3 /pgadmin4/setup.py --load-servers "${PGADMIN_SERVER_JSON_FILE}"
        else
            /venv/bin/python3 /pgadmin4/setup.py --load-servers "${PGADMIN_SERVER_JSON_FILE}" --user ${PGADMIN_DEFAULT_EMAIL}
        fi
    fi
fi

# Start Postfix to handle password resets etc.
if [ -z ${PGADMIN_DISABLE_POSTFIX} ]; then
    sudo /usr/sbin/postfix start
fi

# Get the session timeout from the pgAdmin config. We'll use this (in seconds)
# to define the Gunicorn worker timeout
TIMEOUT=$(cd /pgadmin4 && /venv/bin/python3 -c 'import config; print(config.SESSION_EXPIRATION_TIME * 60 * 60 * 24)')

# NOTE: currently pgadmin can run only with 1 worker due to sessions implementation
# Using --threads to have multi-threaded single-process worker

if [ ! -z ${PGADMIN_ENABLE_TLS} ]; then
    exec /venv/bin/gunicorn --timeout ${TIMEOUT} --bind ${PGADMIN_LISTEN_ADDRESS:-[::]}:${PGADMIN_LISTEN_PORT:-443} -w 1 --threads ${GUNICORN_THREADS:-25} --access-logfile ${GUNICORN_ACCESS_LOGFILE:--} --keyfile /certs/server.key --certfile /certs/server.cert -c gunicorn_config.py run_pgadmin:app
else
    exec /venv/bin/gunicorn --timeout ${TIMEOUT} --bind ${PGADMIN_LISTEN_ADDRESS:-[::]}:${PGADMIN_LISTEN_PORT:-80} -w 1 --threads ${GUNICORN_THREADS:-25} --access-logfile ${GUNICORN_ACCESS_LOGFILE:--} -c gunicorn_config.py run_pgadmin:app
fi