#!/usr/bin/env bash

unamestr=`uname`
if [[ "$unamestr" == 'Darwin' ]]; then
    # OSX
    if command -v greadlink >/dev/null 2>&1; then
        # macOS readlink doesn't support -f option
        READLINK=greadlink
    else
        echo "OSX 'readlink' command does not support option '-f', please install 'greadlink'. If you use 'brew', you can install 'greadlink' using 'brew install coreutils'"
        exit 1
    fi
else
    READLINK=readlink
fi

leandir=$(dirname $($READLINK -f $0))/..
leandir=$($READLINK -f $leandir)

librarydir="$leandir/lib/lean"
test -d "$librarydir" || librarydir="$leandir"

LEAN_PATH=$librarydir/library:$librarydir/leanpkg \
  PATH=$leandir/bin:$PATH \
  exec lean --run $librarydir/leanpkg/leanpkg/main.lean "$@"