ar-rebar3

#!/bin/bash

if [ $# -ne 2 ]; then
	echo "ar-rebar3 <profile> <command>"
    exit 1
fi

SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
PROFILE=$1
COMMAND=$2

create_overlay_var() {
  local target="_vars.config"
  local name="${1}"
  local value="$(eval ${2} 2>/dev/null || echo undefined)"

  if ! echo "${name}" | grep -E '^[a-z]+[0-9A-Za-z_]+$' >/dev/null
  then
    echo "invalid variable ${name}" 1>&2
    return 1
  fi

  if ! echo "${value}" | grep -E '^[[:print:]]+$' >/dev/null
  then
    echo "invalid value ${value}" 1>&2
    return 1
  fi

  if test -e "${target}"
  then
    printf '{%s, "%s"}.\n' "${name}" "${value}" >> "${target}"
    return 0
  fi

  printf '{%s, "%s"}.\n' "${name}" "${value}" > "${target}"
  return 0
}

echo Removing build artifacts...
set -x
rm -f "_vars.config"
rm -f "${SCRIPT_DIR}/lib"
rm -f "${SCRIPT_DIR}/releases"
{ set +x; } 2>/dev/null
echo

echo "Crafting overlay variables..."
create_overlay_var git_rev "git rev-parse HEAD"
create_overlay_var datetime "date -u '+%Y-%m-%dT%H:%M:%SZ'"
create_overlay_var cc_version "cc --version | head -n1"
create_overlay_var gmake_version "gmake --version | head -n1"
create_overlay_var cmake_version "cmake --version | head -n1"

echo "Executing rebar3 as ${PROFILE} ${COMMAND}"
${SCRIPT_DIR}/rebar3 as ${PROFILE} ${COMMAND}

if [ "${COMMAND}" = "release" ]; then
	RELEASE_PATH=$(${SCRIPT_DIR}/rebar3 as ${ARWEAVE_BUILD_TARGET:-default} path --rel)
    echo
    echo Copying and linking build artifacts
    set -x
    cp ${RELEASE_PATH}/arweave/bin/arweave ${SCRIPT_DIR}/bin/arweave
    cp ${RELEASE_PATH}/arweave/bin/arweave ${SCRIPT_DIR}/bin/arweave-dev
    ln -s ${RELEASE_PATH}/arweave/releases ${SCRIPT_DIR}/releases
    ln -s ${RELEASE_PATH}/arweave/lib ${SCRIPT_DIR}/lib
    { set +x; } 2>/dev/null
    echo
fi