#! /bin/bash -e

# build and test everything in a fresh docker installation
img="ubuntu:latest"
repos=""
keys=""
envs=""
dirs="-v $(pwd):/workdir"
targets="all check distcheck"
if test -e ./build-in-docker.conf; then
    # you can preconfigure the variables in file build-in-docker.conf
    # if you do so, add the file to EXTRA_DIST in makefile.am
    source ./build-in-docker.conf
fi
while test $# -gt 0; do
    case "$1" in
        (-h|--help)
            echo "$0 [OPTIONS]"
            echo
            echo "OPTIONS:"
            echo "  -h, --help           show this help"
            echo "  -i --image <image>   use given docker image instead of ${img}"
            echo "  -t --targets targets specify build targets, default: ${targets}"
            echo "  -r --repo <url>      add given apt repository"
            echo "  -k --key <url>       add public key from url"
            echo "  -e --env <var>=<val> set environment variable in docker"
            echo "  -d --dir <dir>       access given directory read only"
            echo
            echo "EXAMPLE:"
            echo
            echo "$0 -i mwaeckerlin/ubuntu:trusty-i386 \\"
            echo "                    -t deb \\"
            echo "                    -e ANDROID_HOME=/opt/local/android \\"
            echo "                    -d /opt/local/android \\"
            echo "                    -r universe \\"
            echo "                    -r https://dev.marc.waeckerlin.org/repository \\"
            echo "                    -k https://dev.marc.waeckerlin.org/repository/PublicKey"
            echo
            exit 0
            ;;
        (-i|--image) shift;
            img="$1"
            ;;
        (-t|--targets) shift;
            targets="$1"
            ;;
        (-r|--repo) shift;
            repos+=" $1"
            ;;
        (-k|--key) shift;
            keys+=" $1"
            ;;
        (-e|--env) shift;
            envs+=" -e $1"
            ;;
        (-d|--dirs) shift;
            dirs+=" -v $1:$1:ro"
            ;;
        (*)
            echo "**** ERROR: unknown option '$1', try --help" 1>&2
            exit 1
            ;;
    esac
    if test $# -eq 0; then
        echo "**** ERROR: missing value, try --help" 2>61
        exit 1
    fi
    shift
done

set -x

DOCKER_ID=$(docker run -d ${dirs} ${envs} -w /workdir $img sleep infinity)
trap "docker rm -f ${DOCKER_ID}" INT TERM EXIT
docker exec ${DOCKER_ID} apt-get install -y software-properties-common apt-transport-https dpkg-dev
if test -n "${repos}"; then
    for repo in ${repos}; do
        docker exec ${DOCKER_ID} apt-add-repository ${repo}
    done
fi
if test -n "${keys}"; then
    for key in ${keys}; do
        wget -O- ${key} \
            | docker exec -i ${DOCKER_ID} apt-key add -
    done
fi
docker exec ${DOCKER_ID} apt-get update
docker exec ${DOCKER_ID} ./resolve-debbuilddeps.sh
docker exec -u $(id -u) ${DOCKER_ID} svn upgrade || true
docker exec -u $(id -u) ${DOCKER_ID} ./bootstrap.sh -t "${targets}"