#!/usr/bin/env bash
# Run engine specific integration tests against the latest containerd-in-docker
set -eu -o pipefail

function container_ip {
    local cid=$1
    local network=$2
    docker inspect \
        -f "{{.NetworkSettings.Networks.${network}.IPAddress}}" "$cid"
}

function fetch_images {
    ## TODO - not yet implemented
    ./scripts/test/engine/load-image fetch-only
}

function setup {
    ### start containerd and log to a file
    echo "Starting containerd in the background"
    containerd 2&> /tmp/containerd.err  &
    echo "Waiting for containerd to be responsive"
    # shellcheck disable=SC2034
    for i in $(seq 1 60); do
        if ctr namespace ls > /dev/null; then
            break
        fi
        sleep 1
    done
    ctr namespace ls > /dev/null
    echo "containerd is ready"

    # TODO Once https://github.com/moby/moby/pull/33355 or equivalent
    #      is merged, then this can be optimized to preload the image
    #      saved during the build phase
}

function cleanup {
    #### if testexit is non-zero dump the containerd logs with a banner
    if [ "${testexit}" -ne 0 ] ; then
        echo "FAIL: dumping containerd logs"
        echo ""
        cat /tmp/containerd.err
        if [ -f /var/log/engine.log ] ; then
            echo ""
            echo "FAIL: dumping engine log"
            echo ""
        else
            echo ""
            echo "FAIL: engine log missing"
            echo ""
        fi
        echo "FAIL: remaining namespaces"
        ctr namespace ls || /bin/tru
        echo "FAIL: remaining containers"
        ctr --namespace docker container ls || /bin/tru
        echo "FAIL: remaining tasks"
        ctr --namespace docker task ls || /bin/tru
        echo "FAIL: remaining snapshots"
        ctr --namespace docker snapshots ls || /bin/tru
        echo "FAIL: remaining images"
        ctr --namespace docker image ls || /bin/tru
    fi
}

function runtests {
    # shellcheck disable=SC2086
    env -i \
        GOPATH="$GOPATH" \
        PATH="$PWD/build/:${PATH}" \
        VERSION=${VERSION} \
        "$(which go)" test -p 1 -parallel 1 -v ./e2eengine/... ${TESTFLAGS-}
}

cmd=${1-}

case "$cmd" in
    setup)
        setup
        exit
        ;;
    cleanup)
        cleanup
        exit
        ;;
    fetch-images)
        fetch_images
        exit
        ;;
    test)
        runtests
        ;;
    run|"")
        testexit=0
        runtests || testexit=$?
        cleanup
        exit $testexit
        ;;
    shell)
        $SHELL
        ;;
    *)
        echo "Unknown command: $cmd"
        echo "Usage: "
        echo "    $0 [setup | cleanup | test | run]"
        exit 1
        ;;
esac