#!/bin/bash
root_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)/.."
cd "${root_dir}"
options=`cat ${root_dir}/bin/config_options.sh`

os_dir=$(./platform/os.sh osdir)

get_patch_file () {
  if test -e "${root_dir/PATCH_VERSION}"; then
    tag=`cat "${root_dir}/PATCH_VERSION" | xargs`
  else
    echo "no tag file found, please create it in the root of the project as so: 'echo \"v0.10.2\" > PATCH_VERSION'"
    exit 1
  fi
}

compare_patch () {
  cd "${root_dir}/libbitcoind"
  get_patch_file
  echo "running the diff command from HEAD to ${tag}"
  git diff ${tag}..HEAD > /tmp/tmp.patch #uncommitted changes won't affect things here
  matching_patch=`diff -w /tmp/tmp.patch "${root_dir}/etc/bitcoin.patch"` 
}
#set the LD_LIBRARY_PATH for the linux clients.
export LD_LIBRARY_PATH="${root_dir}/libbitcoind/src/leveldb":"${os_dir}":$LD_LIBRARY_PATH

debug=
if [ "${BITCOINDJS_ENV}" == "debug" ]; then
  options=`cat ${root_dir}/bin/config_options_debug.sh`
fi

test=
if [ "${BITCOINDJS_ENV}" == "test" ]; then
  options=`cat ${root_dir}/bin/config_options_test.sh`
fi

btc_dir="${root_dir}/libbitcoind"
echo "Using BTC directory: ${btc_dir}"

rm -f "${os_dir}/libbitcoind.*"
only_make=false
if [ -d "${root_dir}/libbitcoind" ]; then
  echo "running compare patch..."
  compare_patch
  repatch=false
  if [[ "${matching_patch}" =~ [^\s\\] ]]; then
    echo "Warning! libbitcoind is not patched with:\
  ${root_dir}/etc/bitcoin.patch."
    echo -n "Would you like to remove the current patch, checkout the tag: ${tag} and \
apply the current patch from "${root_dir}"/etc/bitcoin.patch? (y/N): "
    if [ $ASSUME_YES = true ]; then
      input=y
      echo ""
    else
      read input
    fi
    if [[ "${input}" =~ ^y|^Y ]]; then
      repatch=true
      echo "Removing directory: \"${root_dir}/libbitcoind\" and starting over!"
      rm -fr "${root_dir}"/libbitcoind
    fi
  fi
  if [ "${repatch}" = false ]; then
    echo "Running make inside libbitcoind (assuming you've previously patched and configured libbitcoind)..."
    cd "${btc_dir}"
    only_make=true
  fi
fi

set -e

if [ "${only_make}" = false ]; then
  echo "Removing cloning, patching, and building libbitcoind..."
  get_patch_file
  echo "attempting to checkout tag: ${tag} of bitcoin from github..."
  cd "${root_dir}"
  git clone --depth 1 --branch "${tag}" https://github.com/bitcoin/bitcoin.git libbitcoind

  cd "${btc_dir}"

  echo '../patch-bitcoin.sh' "${btc_dir}"
  ../bin/patch-bitcoin "${btc_dir}"

  if ! test -d .git; then
    echo 'Please point this script to an upstream bitcoin git repo.'
    exit 1
  fi

fi

echo './autogen.sh'
./autogen.sh
full_options="${options}${os_dir}"
echo "running the configure script with the following options:\n :::[\"${full_options}\"]:::"
${full_options}
echo 'make V=1'
make V=1

ext=$($root_dir/platform/os.sh ext)
echo 'Copying libbitcoind.{so|dylib} to its appropriate location.'
if test -e "${root_dir}/libbitcoind/src/.libs/libbitcoind.${ext}"; then
  if [ "$ext" = "dylib" ]; then
    if [ ! -d "${os_dir}/lib" ]; then
      mkdir -p "${os_dir}/lib"
    fi 
    cp -R "${root_dir}"/libbitcoind/src/.libs/libbitcoind.*dylib "${os_dir}/lib/"
  else
    if [ ! -d "${os_dir}" ]; then
      mkdir -p "${os_dir}"
    fi
    cp -P "${root_dir}"/libbitcoind/src/.libs/libbitcoind.so* "${os_dir}/"
  fi
fi

echo 'Build finished successfully.'