#!/bin/sh

set -e

if [ "$GOPATH" = "" ]; then
    tmpdir=$(mktemp -d)
    export GOPATH=$tmpdir
    # shellcheck disable=SC2064
    trap "rm -rf $tmpdir" EXIT

    mkdir -p "$tmpdir/src/github.com/snapcore/"
    ln -s "$(pwd)" "$tmpdir/src/github.com/snapcore/snapd"
    cd "$tmpdir/src/github.com/snapcore/snapd"
fi

if ! command -v govendor >/dev/null;then
    export PATH="$PATH:${GOPATH%%:*}/bin"

    if ! command -v govendor >/dev/null;then
	    echo Installing govendor
	    go get -u github.com/kardianos/govendor
    fi
fi

echo Obtaining dependencies
govendor sync


if [ "$1" != "--skip-unused-check" ]; then
    unused="$(govendor list +unused)"
    if [ "$unused" != "" ]; then
        echo "Found unused ./vendor packages:"
        echo "$unused"
        echo "Please fix via 'govendor remove +unused'"
        exit 1
    fi
fi