#!/bin/bash

# Add local user
# Either use the PUID/PGID if passed in at runtime or fallback to 9001.
USER_ID=${PUID:-9001}
GROUP_ID=${PGID:-$USER_ID}
echo "Starting with UID : $USER_ID:$GROUP_ID"
GROUP=proton
if getent group $GROUP_ID > /dev/null; then
  echo "Using group $GROUP with GID $GROUP_ID..."
  GROUP=$(getent group $GROUP_ID | cut -d: -f1)
  echo "Using group $GROUP with GID $GROUP_ID..."
else
  echo "Adding group $GROUP with GID $GROUP_ID..."
  addgroup -g $GROUP_ID $GROUP
fi
echo "Adding user proton with group $GROUP..."
echo adduser -D -u $USER_ID -G $GROUP -h /var/lib/proton -s /bin/sh proton
adduser -D -u $USER_ID -G $GROUP -h /var/lib/proton -s /bin/sh proton
chown -R ${USER_ID}:${GROUP_ID} /var/lib/proton
export HOME=/var/lib/proton

# The ProtonMail Bridge expects connections from 127.0.0.1. Use socat to
# redirect incoming connections to localhost. Also, this allows us to use
# the default SMTP/IMAP ports.
setcap 'cap_net_bind_service=+ep' /usr/bin/socat
socat TCP-LISTEN:25,fork TCP:127.0.0.1:1025 &
socat TCP-LISTEN:143,fork TCP:127.0.0.1:1143 &

exec /sbin/su-exec proton "$@"