#!/usr/bin/env bash
set -euo pipefail

container_name=${PRODUCT_VAMP_ZERO_CONTAINER:-product_vamp_zero}
config_dir=${PRODUCT_VAMP_CONFIG_DIR:-/etc/product_vamp}
image_tag=${PRODUCT_VAMP_ZERO_IMAGE:-}
if [ -z "$image_tag" ]; then
  read -r image_tag < "$config_dir/image_id"
fi
run_dir=${PRODUCT_VAMP_RUN_DIR:-/run/product_vamp}
display_tty=${PRODUCT_VAMP_DISPLAY_TTY:-/dev/tty1}

install -d -m 0755 "$run_dir"

if command -v chvt >/dev/null 2>&1 && [ -c "$display_tty" ]; then
  tty_number=${display_tty#/dev/tty}
  case "$tty_number" in
    ''|*[!0-9]*)
      ;;
    *)
      chvt "$tty_number" || true
      ;;
  esac
fi

if [ -c "$display_tty" ]; then
  if command -v setterm >/dev/null 2>&1; then
    setterm --cursor off > "$display_tty" || printf '\033[?25l' > "$display_tty" || true
  else
    printf '\033[?25l' > "$display_tty" || true
  fi
fi

docker rm -f "$container_name" >/dev/null 2>&1 || true

echo "Starting Product Vamp Zero container '$container_name' from '$image_tag' on '$display_tty'"

exec docker run --rm --name "$container_name" --network host --privileged \
  --env PRODUCT_VAMP_DISPLAY_TTY="$display_tty" \
  -v "$config_dir:/etc/product_vamp:ro" \
  -v "$run_dir:/run/product_vamp" \
  "$image_tag" \
  sh -lc 'display_tty=${PRODUCT_VAMP_DISPLAY_TTY:-/dev/tty1}; exec setsid --wait --ctty /usr/bin/vamp_zero --config /etc/product_vamp/vamp.json < "$display_tty"'