#!/bin/bash

if [ "$CI_COMMIT_REF_NAME" == "upstream" ] || [ "$CI_COMMIT_REF_NAME" == "pristine-tar" ]; then
    echo No builds run on the $CI_COMMIT_REF_NAME branch, exiting
    exit 0
fi

# https://gitlab.com/gitlab-org/gitlab-runner/issues/1380#note_48552305
lockfile=/.lock
if [[ ! -f $lockfile ]] ; then
    set -e
    set -x

    if [ ! -z "$DEBIAN_RELEASE" ]; then
        sed -i "s, testing , $DEBIAN_RELEASE ," /etc/apt/sources.list
    fi

    apt-get -qy update
    apt-get -qy dist-upgrade

    cd $CI_PROJECT_DIR
    if dpkg --compare-versions `dpkg -s apt |sed -n 's,^Version: \(.*\),\1,p'` ge 1.1; then
        apt-get -qy build-dep $CI_PROJECT_DIR
    else
        # this is running on an older version, like jessie-backports
        export BUILD_DEPENDS=`sed 's/\s*|[^,]*,/,/g' debian/control | perl -ne 'next if /^#/; $p=(s/^Build-Depends:\s*/ / or (/^ / and $p)); s/,|\n|\([^)]+\)//mg; print if $p'`
        apt-get -qy install --no-install-recommends \
                build-essential fakeroot git-buildpackage pristine-tar $BUILD_DEPENDS
    fi
    apt-get -qy autoremove --purge
    dpkg-checkbuilddeps
    echo "ensure pristine-tar branch exists and is current"
    git clean -fdx
    git reset --hard
    git fetch --all
    git checkout -B pristine-tar origin/pristine-tar
    echo "make $CI_COMMIT_REF_NAME branch current for gbp"
    git checkout -B "$CI_COMMIT_REF_NAME" "$CI_COMMIT_SHA"
    if [ -z "$CI_COMMIT_TAG" ]; then
        gbp buildpackage -uc -us --git-debian-branch="$CI_COMMIT_REF_NAME"
    else
        gbp buildpackage -uc -us
    fi

    echo "performing general and experimental lintian checks"
    su --shell /bin/sh nobody --command "lintian --color always -EviIL +pedantic ../*.changes" || true
    echo "performing ftp-master-rejects lintian checks"
    su --shell /bin/sh nobody --command "lintian --color always -viF ../*.changes"

    if [ -e debian/tests/control ]; then
        autopkgtest ../*.changes -- null
    fi
fi

[[ $CI ]] && touch $lockfile

exec "$@"