#!/bin/sh

if [ ! -d /config ]; then
    echo "/config directory not mounted, exiting..."
    exit 1
fi

if [ ! -f /config/psiphon.config ]; then
    cp /etc/psiphon/psiphon.config /config/psiphon.config
    if [ -n "${HTTP_PORT}" ]; then
       sed -i -E 's/"LocalHttpProxyPort"[[:space:]]*:[[:space:]]*[0-9]+/"LocalHttpProxyPort": '${HTTP_PORT}'/' /config/psiphon.config
    fi
    if [ -n "${SOCKS_PORT}" ]; then
        sed -i -E 's/"LocalSocksProxyPort"[[:space:]]*:[[:space:]]*[0-9]+/"LocalSocksProxyPort": '${SOCKS_PORT}'/' /config/psiphon.config
    fi
    if [ -n "${DEVICE_REGION}" ]; then
        sed -i -E 's/"DeviceRegion"[[:space:]]*:[[:space:]]*"[^"]*"/"DeviceRegion": "'${DEVICE_REGION}'"/' /config/psiphon.config
    fi
    if [ -n "${EGRESS_REGION}" ]; then
        sed -i -E 's/"EgressRegion"[[:space:]]*:[[:space:]]*"[^"]*"/"EgressRegion": "'${EGRESS_REGION}'"/' /config/psiphon.config
    fi
    if [ -n "${UPSTREAM_PROXY}" ]; then
        sed -i -E 's|"UpstreamProxyUrl"[[:space:]]*:[[:space:]]*"[^"]*"|"UpstreamProxyUrl": "'${UPSTREAM_PROXY}'"|' /config/psiphon.config
    fi
fi

id psiphon > /dev/null 2>&1
if [ $? -ne 0 ]; then
    adduser -DH psiphon psiphon
fi

UID=$(id -u psiphon)
GID=$(id -g psiphon)

PUID=${PUID:-${UID}}
PGID=${PGID:-${GID}}

if [ "${PUID}" != "${UID}" ] || [ "${PGID}" != "${GID}" ]; then
    deluser psiphon >/dev/null 2>&1 || true
    delgroup psiphon >/dev/null 2>&1 || true
    addgroup -g ${PGID} psiphon
    adduser -DH -u ${PUID} -G psiphon psiphon
fi

chown -R psiphon:psiphon /config

su -s /bin/sh psiphon <<EOF
psiphon -config /config/psiphon.config
EOF