#! /usr/bin/env bash

# Supported options are given with environment variables. All arguments are
# passed through to install/install
#
# Options
#
#   BOOTSTRAP_ROOT : specify the directory in which the bootstrap should be
#                    placed. Defaults to: ${HOME}/bootstrap
#
#   BOOTSTRAP_FORK : specify the fork of OpenUxAS-bootstrap to use. Note that
#                    the master branch is always selected; it is not currently
#                    possible to specify a ref-spec. Defaults to:
#                    afrl-rq/OpenUxAS-bootstrap
#
#   USE_GIT_URI    : if set (to anything other than the empty string), do not
#                    perform the checkout using https.
#
#   ADA            : if set (to anything other than the empty string), install
#                    GNAT Community Edition, to enable Ada development.
#
#   DEVEL          : if set (to anything other than the empty string),
#                    configure uxas, lmcp and amase for development.

ARGS=$@

if [ -z "$BOOTSTRAP_ROOT" ]; then
  BOOTSTRAP_ROOT="${HOME}/bootstrap"
fi

if [ -z "$BOOTSTRAP_FORK" ]; then
  BOOTSTRAP_FORK="afrl-rq/OpenUxAS-bootstrap.git"
fi

colorize() {
  if [ -t 1 ]; then printf "\e[%sm%s\e[m" "$1" "$2"
  else echo -n "$2"
  fi
}

# Checks for bootstrap, and suggests to remove it for installing
if [ -d "${BOOTSTRAP_ROOT}" ]; then
  { echo
    colorize 1 "CRITICAL"
    echo ": Can not proceed with installation. Kindly remove the '${BOOTSTRAP_ROOT}' directory first."
    echo
  } >&2
    exit 1
fi

if ! command -v git 1>/dev/null 2>&1; then
  { echo
    colorize 1 "CRITICAL"
    echo ": Git is not installed, can't continue."
    echo
  } >&2
  exit 1
fi

if ! command -v python3 1>/dev/null 2>&1; then
  { echo
    colorize 1 "CRITICAL"
    echo ": python3 is not installed, can't continue."
    echo
  } >&2
  exit 1
fi

PYTHON_MAJOR_VERSION=$( python3 -c 'import sys; print(sys.version_info[0])' )
PYTHON_MINOR_VERSION=$( python3 -c 'import sys; print(sys.version_info[1])' )

if ((10#${PYTHON_MAJOR_VERSION} < 3)); then
  { echo
    colorize 1 "CRITICAL"
    echo ": python >= 3.7 is required, can't continue."
    echo
  } >&2
  exit 1
else
  if ((10#${PYTHON_MINOR_VERSION} < 7)); then
    { echo
      colorize 1 "CRITICAL"
      echo ": python >= 3.7 is required, can't continue."
      echo
    }
    exit 1
  fi
fi

failed_checkout() {
  colorize 1 "CRITICAL"
  echo ": Failed to git clone $1"
  exit -1
}

checkout() {
  [ -d "$2" ] || git clone --depth 1 "$1" "$2" || failed_checkout "$1"
}


if [ -n "${USE_GIT_URI}" ]; then
  GITHUB="git://github.com"
else
  GITHUB="https://github.com"
fi

checkout "${GITHUB}/${BOOTSTRAP_FORK}" "${BOOTSTRAP_ROOT}"

if [ -n "${ADA}" ]; then
  (cd "${BOOTSTRAP_ROOT}" && \
    python3 install/install --automatic -v --log-file bootstrap.log ${ARGS})
else
  (cd "${BOOTSTRAP_ROOT}" && \
    python3 install/install --automatic -v --log-file bootstrap.log --no-gnat ${ARGS})
fi

if [ -n "${DEVEL}" ]; then
  (cd "${BOOTSTRAP_ROOT}" && \
    eval "$( python3 install/install-anod-venv --printenv )" && \
    python3 anod devel-setup uxas lmcp amase --log-file devel-setup.log)
fi