#!/usr/bin/env bash

# Script intended for running Deckhand functional tests via gabbi. Requires
# Docker CE (at least) to run.

set -xe

# Meant for capturing output of Deckhand image. This requires that logging
# in the image be set up to pipe everything out to stdout/stderr.
STDOUT=$(mktemp)

# NOTE(fmontei): `DECKHAND_IMAGE` should only be specified if the desire is to
# run Deckhand functional tests against a specific Deckhand image, which is
# useful for CICD (as validating the image is vital). However, if the
# `DECKHAND_IMAGE` is not specified, then this implies that the most current
# version of the code should be used, which is in the repo itself.
DECKHAND_IMAGE=${DECKHAND_IMAGE:-}
ROOTDIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

source $ROOTDIR/common-tests.sh


function cleanup_deckhand {
    set +e

    if [ -n "$POSTGRES_ID" ]; then
        sudo docker stop $POSTGRES_ID
    fi
    if [ -n "$DECKHAND_ID" ]; then
        sudo docker stop $DECKHAND_ID
    fi
    if [ -d "$CONF_DIR" ]; then
        rm -rf $CONF_DIR
    fi

    # Kill all processes and child processes (for example, if workers > 1)
    # if using uwsgi only.
    PGID=$(ps -o comm -o pgid | grep uwsgi | grep -o [0-9]* | head -n 1)
    if [ -n "$PGID" ]; then
        setsid kill -- -$PGID
    fi
}


trap cleanup_deckhand EXIT


function deploy_deckhand {
    gen_config "http://localhost:9000"
    gen_paste true
    gen_policy

    if [ -z "$DECKHAND_IMAGE" ]; then
        log_section "Running Deckhand via uwsgi"

        alembic upgrade head
        # NOTE(fmontei): Deckhand's database is not configured to work with
        # multiprocessing. Currently there is a data race on acquiring shared
        # SQLAlchemy engine pooled connection strings when workers > 1. As a
        # workaround, we use multiple threads but only 1 worker. For more
        # information, see: https://github.com/att-comdev/deckhand/issues/20
        export DECKHAND_API_WORKERS=1
        export DECKHAND_API_THREADS=4
        source $ROOTDIR/../entrypoint.sh server &
    else
        log_section "Running Deckhand via Docker"
        sudo docker run \
            --rm \
            --net=host \
            -v $CONF_DIR:/etc/deckhand \
            $DECKHAND_IMAGE alembic upgrade head &> $STDOUT &
        sudo docker run \
            --rm \
            --net=host \
            -p 9000:9000 \
            -v $CONF_DIR:/etc/deckhand \
            $DECKHAND_IMAGE server &> $STDOUT &
    fi

    # Give the server a chance to come up. Better to poll a health check.
    sleep 5

    DECKHAND_ID=$(sudo docker ps | grep deckhand | awk '{print $1}')
    echo $DECKHAND_ID
}


# Deploy Deckhand and PostgreSQL and run tests.
deploy_postgre
deploy_deckhand

log_section Running tests

# Create folder for saving HTML test results.
if [ ! -d $ROOTDIR/results ]; then
    mkdir $ROOTDIR/results
fi

set +e
posargs=$@
if [ ${#posargs} -ge 1 ]; then
    py.test -k $1 -svx $( dirname $ROOTDIR )/deckhand/tests/functional/test_gabbi.py --html=results/index.html
else
    py.test -svx $( dirname $ROOTDIR )/deckhand/tests/functional/test_gabbi.py --html=results/index.html
fi
TEST_STATUS=$?
set -e

if [ "x$TEST_STATUS" = "x0" ]; then
    log_section Done SUCCESS
else
    log_section Deckhand Server Log
    cat $STDOUT
    log_section Done FAILURE
    exit $TEST_STATUS
fi