#!/usr/bin/env bash

set -eu -o pipefail

SOURCE_DIR=/source
BUILD_DIR=/build
CMD=${1:-test}
shift

# Build type can be "debug" or "release", fallbacks to "release" by default
BUILD_TYPE=$(echo "$BUILD_TYPE" | tr "[:upper:]" "[:lower:]")
case "$BUILD_TYPE" in
"debug")
    ;;
*)
    BUILD_TYPE="release"
    ;;
esac

case "$CMD" in
"test")
    if [ ! -d "$BUILD_DIR/$BUILD_TYPE/docker/local" ]; then
        echo "Missing $BUILD_DIR/$BUILD_TYPE/docker/local directory." >&2
        exit 1
    fi
    if [ -z "$FALCO_VERSION" ]; then
        echo "Missing Falco version." >&2
        exit 1
    fi
    if [ ! -f "$BUILD_DIR/$BUILD_TYPE/falco-$FALCO_VERSION-x86_64.deb" ]; then
        echo "Package(s) not found." >&2
        exit 1
    fi
    DOCKER_IMAGE_NAME="falcosecurity/falco:test"
    echo "Building local docker image $DOCKER_IMAGE_NAME from latest debian package..."
    cp "$BUILD_DIR/$BUILD_TYPE/falco-$FALCO_VERSION-x86_64.deb" $BUILD_DIR/$BUILD_TYPE/docker/local
    cd $BUILD_DIR/$BUILD_TYPE/docker/local
    docker build --build-arg FALCO_VERSION="$FALCO_VERSION" -t "$DOCKER_IMAGE_NAME" .

    # Check that source directory contains Falco and Sysdig
    if [ ! -d "$SOURCE_DIR/falco/test" ]; then
        echo "Missing $SOURCE_DIR/falco/test directory." >&2
        exit 1
    fi
    echo "Running regression tests ..."
    cd $SOURCE_DIR/falco/test
    bash run_regression_tests.sh $BUILD_DIR/$BUILD_TYPE
    docker rmi "$DOCKER_IMAGE_NAME" || true
    ;;
"bash")
    CMD=/bin/bash
    ;& # fallthrough
"usage")
    exec "$CMD" "$@"
    ;;
esac