#!/usr/bin/env bash

echo "$@" >> /tmp/xcrun-$$.log

# We could not care less, luckily this always comes first
if [[ ${1} == --sdk ]] || [[ ${1} == -sdk ]] || [[ ${1} == sdk ]]; then
  shift;
  shift;
fi

case ${1} in

  *-find)
    # The x86_64 native compiler can be used alongside the arm64 cross-compiler.
    # Since the arm64 compiler can output x86_64 binaries, the following lines
    # are not necessary. They are left to explain how both compilers can be used.

    # if [[ ${HOST} =~ arm64.* ]]; then
    #   # This is necessary to compile the cross-compilation tools that Qt
    #   # requires. The arm64 compilation is being done via the `CROSS_COMPILE`
    #   # flag, therefore this script will only expose the SDK version and path.
    #   echo "which x86_64-apple-darwin13.4.0-${2}" >> /tmp/xcrun-$$.log
    #   which x86_64-apple-darwin13.4.0-${2} >> /tmp/xcrun-$$.log
    #   which x86_64-apple-darwin13.4.0-${2}
    #   exit 0
    # fi
    if which ${HOST}-${2} > /dev/null 2>&1; then
      echo "which ${HOST}-${2}" >> /tmp/xcrun-$$.log
      which ${HOST}-${2} >> /tmp/xcrun-$$.log
      which ${HOST}-${2}
      exit 0
    elif which ${2} > /dev/null 2>&1; then
      echo "which ${2}" >> /tmp/xcrun-$$.log
      which ${2} >> /tmp/xcrun-$$.log
      which ${2}
      exit 0
    else
      echo "ERROR :: Fake xcrun failed to locate ${2}" >> /tmp/xcrun-$$.log
      echo "ERROR :: Fake xcrun failed to locate ${2}"
      exit 1
    fi
    ;;

  *-show-sdk-path)
    if [[ -n ${CONDA_BUILD_SYSROOT} ]]; then
      echo ${CONDA_BUILD_SYSROOT} >> /tmp/xcrun-$$.log
      echo ${CONDA_BUILD_SYSROOT}
      exit 0
    fi
    if [[ -f /usr/bin/xcrun ]]; then
      /usr/bin/xcrun --sdk macosx --show-sdk-path
      exit $?
    fi
    echo "TODO :: Implement fallback for xcrun --show-sdk-path"
    exit 1
    ;;

  *-show-sdk-version)
    if [[ ${HOST} =~ arm64.* ]]; then
      echo 11.0
    else
      echo 10.14
    fi
    exit 0
    ;;

  *-show-sdk-platform-path)
    echo /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform
    exit 0
    ;;

  *-show-sdk-build-version)
    if [[ ${HOST} =~ arm64.* ]]; then
      echo 20A2408
    else
      echo 18G74
    fi
    exit 0
    ;;

esac

if [[ -n ${HOST} ]] && [[ -f ${HOST}-${1} ]]; then
  echo "calling ${HOST}-$@" >> /tmp/xcrun-$$.log
  ${HOST}-"$@"
else
  echo "calling $@" >> /tmp/xcrun-$$.log
  "$@"
fi