#!/bin/bash
set -e -o pipefail

tmpfile=$(mktemp -t gopkgsize.XXXXX)
sizesfile=$(mktemp -t gopktsize-output.XXXXX)

trap "rm -f $tmpfile" EXIT

go build -work -v -x "$@" 2>$tmpfile

# grab WORK=
fline=$(head -1 $tmpfile)
if [[ "$fline" != WORK=* ]]; then
    echo "unexpected build log line: '$fline'"
    exit 1
fi
eval "$fline"

#linkfile=$tmpfile
linkfile=$WORK/b001/importcfg.link
for p in $(grep 'packagefile ' < $linkfile | sort -u | cut -f2 -d' '); do
    pkg=$(cut -f1 -d'=' <<< "$p")
    f=$(cut -f2 -d'=' <<< "$p")
    fp=$(eval "echo $f")
    sz=$(du -hxs $fp | awk '{print $1}')
    echo $sz $pkg >> $sizesfile
done

sort -rh < $sizesfile

echo "consider removing workdir $WORK" >&2
echo "package size report written to $sizesfile" >&2