#!/bin/bash
#
# Functions for tests for the Node.js image.
#
# IMAGE_NAME specifies a name of the candidate image used for testing.
# The image has to be available before this script is executed.
#

THISDIR=$(dirname ${BASH_SOURCE[0]})

source "${THISDIR}/test-lib.sh"
source "${THISDIR}/test-lib-openshift.sh"

info() {
  echo -e "\n\e[1m[INFO] $@...\e[0m\n"
}

image_exists() {
  docker inspect $1 &>/dev/null
}

container_exists() {
  image_exists $(cat $cid_file)
}

container_ip() {
  docker inspect --format="{{ .NetworkSettings.IPAddress }}" $(cat $cid_file)
}

container_logs() {
  docker logs $(cat $cid_file)
}

run_s2i_build() {
  ct_s2i_build_as_df file://${test_dir}/test-app ${IMAGE_NAME} ${IMAGE_NAME}-testapp ${s2i_args} $(ct_build_s2i_npm_variables) $1
}

run_s2i_build_proxy() {
  ct_s2i_build_as_df file://${test_dir}/test-hw ${IMAGE_NAME} ${IMAGE_NAME}-testhw ${s2i_args} $(ct_build_s2i_npm_variables) -e HTTP_PROXY=$1 -e http_proxy=$1 -e HTTPS_PROXY=$2 -e https_proxy=$2
}

run_s2i_build_client() {
  ct_s2i_build_as_df \
    "file://${test_dir}/$1" "${IMAGE_NAME}" "${IMAGE_NAME}-$1" \
    ${s2i_args} \
    $(ct_build_s2i_npm_variables) -e NODE_ENV=development
}

run_s2i_build_binary() {
  ct_s2i_build_as_df file://${test_dir}/test-binary ${IMAGE_NAME} ${IMAGE_NAME}-testbinary ${s2i_args} $(ct_build_s2i_npm_variables) $1
}

run_s2i_multistage_build() {
  ct_s2i_multistage_build file://${test_dir}/test-app ${FULL_IMAGE} ${IMAGE_NAME} ${IMAGE_NAME}-testapp $(ct_build_s2i_npm_variables)
}

prepare_dummy_git_repo() {
  git init
  for key in "${!gitconfig[@]}"; do
    git config --local "$key" "${gitconfig[$key]}"
  done
  git add --all
  git commit -m "Sample commit"
}

prepare_client_repo() {
  git clone \
    --config advice.detachedHead="false" \
    --branch "$3" --depth 1 \
    "$2" "$1"
  pushd "$1" >/dev/null || return
  for key in "${!gitconfig[@]}"; do
    git config --local "$key" "${gitconfig[$key]}"
  done
  popd >/dev/null || return
}

prepare_minimal_build() {
  suffix=$1
  # Build the app using the full assemble-capable image
  [ -z "$(docker images -q "$FULL_IMAGE")" ] && docker pull "$FULL_IMAGE"
  case "$suffix" in
    testapp)
      run_s2i_multistage_build #>/tmp/build-log 2>&1
      ;;
    testhw)
      IMAGE_NAME=$FULL_IMAGE run_s2i_build_proxy http://user.password@0.0.0.0:8000 https://user.password@0.0.0.0:8000 >/tmp/build-log 2>&1
      # Get the application from the assembled image and into the minimal
      tempdir=$(mktemp -d)
      chown 1001:0 "$tempdir"
      docker run -u 0 --rm -ti -v "$tempdir:$tempdir:Z" "$FULL_IMAGE-$suffix"  bash -c "cp -ar /opt/app-root/src $tempdir"
  pushd "$tempdir" >/dev/null || return
  cat <<EOF >Dockerfile
FROM $IMAGE_NAME
ADD src/* /opt/app-root/src
CMD /usr/libexec/s2i/run
EOF
      # Check if CA autority is present on host and add it into Dockerfile
      [ -f "$(full_ca_file_path)" ] && cat <<EOF >>Dockerfile
USER 0
RUN cd /etc/pki/ca-trust/source/anchors && update-ca-trust extract
USER 1001
EOF
      docker build -t "$IMAGE_NAME-$suffix" $(ct_build_s2i_npm_variables | grep -o -e '\(-v\)[[:space:]]\.*\S*') .
      popd >/dev/null || return
      ;;
    *)
      echo "Please specify a valid test application"
      exit 1
      ;;
  esac

}

prepare() {
  if ! image_exists ${IMAGE_NAME}; then
    echo "ERROR: The image ${IMAGE_NAME} must exist before this script is executed."
    exit 1
  fi

  case "$1" in
    # TODO: STI build require the application is a valid 'GIT' repository, we
    # should remove this restriction in the future when a file:// is used.
    app|hw|express-webapp|binary)
      pushd "${test_dir}/test-${1}" >/dev/null
      prepare_dummy_git_repo
      popd >/dev/null
      ;;
    *)
      if [[ " ${CLIENT_LIST[*]} " =~ "${test_case} " ]];
      then
        PREFIX=$1
        REPO="${PREFIX^^}"_REPO
        REVISION="${PREFIX^^}"_REVISION
        prepare_client_repo "${test_dir}/$1" "${!REPO}" "${!REVISION}"
      else
        echo "Please specify a valid test application"
        exit 1
      fi
      ;;
  esac
}

run_test_application() {
  case "$1" in
    app|hw|express-webapp|binary)
      docker run -d --user=100001 $(ct_mount_ca_file) --rm --cidfile=${cid_file} $2 ${IMAGE_NAME}-test$1
      ;;
    *)
      echo "No such test application"
      exit 1
      ;;
    esac
}

run_client_test_suite() {
  docker run --user=100001 $(ct_mount_ca_file) --rm --cidfile=${cid_file} ${IMAGE_NAME}-$1 npm test
}

kill_test_application() {
	docker kill $(cat $cid_file)
	rm $cid_file
}

cleanup() {
  if [ -f $cid_file ]; then
      if container_exists; then
          docker stop $(cat $cid_file)
      fi
  fi

  for image in "${IMAGE_NAME}"-{test{app,hw,express-webapp,binary}}; do
    image_exists "$image" || continue
    docker rmi -f "$image"
  done

  for client in "${CLIENT_LIST[@]}"; do
    image="${IMAGE_NAME}-${client}"
    image_exists "$image" || continue
    docker rmi -f "$image"
  done

  rm -rf ${test_dir}/test-app/.git
  rm -rf ${test_dir}/test-hw/.git
  rm -rf ${test_dir}/test-binary/.git
  for client in "${CLIENT_LIST[@]}"; do
    rm -rf "${test_dir}/${client}"
  done
  rm -rf ${test_dir}/test-express-webapp/.git

  echo "$test_short_summary"

  if [ $TESTSUITE_RESULT -eq 0 ] ; then
    echo "Tests for ${IMAGE_NAME} succeeded."
  else
    echo "Tests for ${IMAGE_NAME} failed."
  fi
  exit $TESTSUITE_RESULT
}

check_result() {
  local result="$1"
  if [[ "$result" != "0" ]]; then
    echo "S2I image '${IMAGE_NAME}' test FAILED (exit code: ${result})"
    TESTCASE_RESULT=1
  fi
  return $result
}

wait_for_cid() {
  local max_attempts=20
  local sleep_time=1
  local attempt=1
  local result=1
  while [ $attempt -le $max_attempts ]; do
    [ -f $cid_file ] && [ -s $cid_file ] && break
    echo "Waiting for container start..."
    attempt=$(( $attempt + 1 ))
    sleep $sleep_time
  done
}

test_s2i_usage() {
  echo "Testing 's2i usage'..."
  ct_s2i_usage ${IMAGE_NAME} ${s2i_args} &>/dev/null
  check_result $?
}

test_docker_run_usage() {
  echo "Testing 'docker run' usage..."
  docker run --rm ${IMAGE_NAME} &>/dev/null
  check_result $?
}

test_connection() {
  echo "Testing HTTP connection..."
  local max_attempts=10
  local sleep_time=1
  local attempt=1
  local result=1
  while [ $attempt -le $max_attempts ]; do
    echo "Sending GET request to http://$(container_ip):${test_port}/"
    response_code=$(curl -s -w %{http_code} -o /dev/null http://$(container_ip):${test_port}/)
    status=$?
    if [ $status -eq 0 ]; then
      if [ $response_code -eq 200 ]; then
        result=0
      fi
      break
    fi
    attempt=$(( $attempt + 1 ))
    sleep $sleep_time
  done
  return $result
}

scl_usage() {
  # Verify the 'usage' script is working properly when running the base image with 's2i usage ...'
  local run_cmd="$1"
  local expected="$2"

  echo "Testing the image SCL enable ..."
  out=$(docker run --rm ${IMAGE_NAME} /bin/bash -c "${run_cmd}")
  if ! echo "${out}" | grep -q "${expected}"; then
    echo "ERROR[/bin/bash -c "${run_cmd}"] Expected '${expected}', got '${out}'"
    return 1
  fi
  out=$(docker exec $(cat ${cid_file}) /bin/bash -c "${run_cmd}" 2>&1)
  if ! echo "${out}" | grep -q "${expected}"; then
    echo "ERROR[exec /bin/bash -c "${run_cmd}"] Expected '${expected}', got '${out}'"
    return 1
  fi
  out=$(docker exec $(cat ${cid_file}) /bin/sh -ic "${run_cmd}" 2>&1)
  if ! echo "${out}" | grep -q "${expected}"; then
    echo "ERROR[exec /bin/sh -ic "${run_cmd}"] Expected '${expected}', got '${out}'"
    return 1
  fi
}
function test_scl_usage() {
  scl_usage "node --version" "v${VERSION//-minimal/}."
  check_result $?
}

validate_default_value() {
  local label=$1

  IFS=':' read -a label_vals <<< $(docker inspect -f "{{index .Config.Labels \"$label\"}}" ${IMAGE_NAME})
  label_var=${label_vals[0]}
  default_label_val=${label_vals[1]}

  actual_label_val=$(docker run --rm $IMAGE_NAME /bin/bash -c "echo $"$label_var)

  if [ "$actual_label_val" != "$default_label_val" ]; then
    echo "ERROR default value for $label with environment variable $label_var; Expected $default_label_val, got $actual_label_val"
    return 1
  fi
}

# Gets the NODE_ENV environment variable from the container.
get_node_env_from_container() {
  local dev_mode="$1"
  local node_env="$2"

  IFS=':' read -a label_val <<< $(docker inspect -f '{{index .Config.Labels "com.redhat.dev-mode"}}' $IMAGE_NAME)
  dev_mode_label_var="${label_val[0]}"

  echo $(docker run --rm --env $dev_mode_label_var=$dev_mode --env NODE_ENV=$node_env $IMAGE_NAME /bin/bash -c 'echo "$NODE_ENV"')
}

# Ensures that a docker container run with '--env NODE_ENV=$current_val' produces a NODE_ENV value of $expected when
# DEV_MODE=dev_mode.
validate_node_env() {
  local current_val="$1"
  local dev_mode_val="$2"
  local expected="$3"

  actual=$(get_node_env_from_container "$dev_mode_val" "$current_val")
  if [ "$actual" != "$expected" ]; then
    echo "ERROR default value for NODE_ENV when development mode is $dev_mode_val; should be $expected but is $actual"
    return 1
  fi
}

test_dev_mode() {
  local app=$1
  local dev_mode=$2
  local node_env=$3

  echo "Testing $app DEV_MODE=$dev_mode NODE_ENV=$node_env"

  run_test_application $app "-e DEV_MODE=$dev_mode"
  wait_for_cid

  test_connection
  check_result $?

  logs=$(container_logs)
  echo ${logs} | grep -q DEV_MODE=$dev_mode
  check_result $?
  echo ${logs} | grep -q DEBUG_PORT=5858
  check_result $?
  echo ${logs} | grep -q NODE_ENV=$node_env
  check_result $?

  kill_test_application
}

test_incremental_build() {
  npm_variables=$(ct_build_s2i_npm_variables)
  build_log1=$(ct_s2i_build_as_df file://${test_dir}/test-incremental ${IMAGE_NAME} ${IMAGE_NAME}-testapp ${s2i_args} ${npm_variables})
  check_result $?
  build_log2=$(ct_s2i_build_as_df file://${test_dir}/test-incremental ${IMAGE_NAME} ${IMAGE_NAME}-testapp ${s2i_args} ${npm_variables} --incremental)
  check_result $?
  if [ "$VERSION" == "6" ]; then
      # Different npm output for version 6
      if echo "$build_log2" | grep -e "\-\- yarn@[0-9\.]*"; then
          echo "ERROR Incremental build failed: yarn package is getting installed in incremental build"
          check_result 1
      fi
  else
      first=$(echo "$build_log1" | grep -o -e "added [0-9]* packages" | awk '{ print $2 }')
      second=$(echo "$build_log2" | grep -o -e "added [0-9]* packages" | awk '{ print $2 }')
      if [ "$first" == "$second" ]; then
          echo "ERROR Incremental build failed: both builds installed $first packages"
          check_result 1
      fi
  fi

}

function test_scl_variables_in_dockerfile() {
  if [ "$OS" == "rhel7" ] || [ "$OS" == "centos7" ]; then
    # autocleanup only enabled here as only the following tests so far use it
    CID_FILE_DIR=$(mktemp -d)
    ct_enable_cleanup

    echo "Testing npm availability in Dockerfile"
    ct_binary_found_from_df npm
    check_result $?

    info "Testing variable presence during \`docker exec\`"
    ct_check_exec_env_vars
    check_result $?

    info "Checking if all scl variables are defined in Dockerfile"
    ct_check_scl_enable_vars
    check_result $?
 fi
}


# test express webapp
run_s2i_build_express_webapp() {
  local result
  prepare express-webapp
  ct_s2i_build_as_df file://${test_dir}/test-express-webapp ${IMAGE_NAME} ${IMAGE_NAME}-testexpress-webapp ${s2i_args} $(ct_build_s2i_npm_variables)
  run_test_application express-webapp
  wait_for_cid
  ct_test_response http://$(container_ip):${test_port} 200 'Welcome to Express Testing Application'
  result=$?
  kill_test_application
  return $result
}

function test_build_express_webapp() {
  echo "Running express webapp test"
  run_s2i_build_express_webapp
  check_result $?
}

function test_running_client_js {
  echo "Running $1 test suite"
  prepare "$1"
  run_s2i_build_client "$1"
  check_result $?
  run_client_test_suite "$1"
  check_result $?
}

function test_check_build_using_dockerfile() {
  info "Check building using a Dockerfile"
  ct_test_app_dockerfile ${THISDIR}/examples/from-dockerfile/Dockerfile 'https://github.com/sclorg/nodejs-ex.git' 'Welcome to your Node.js application on OpenShift' app-src
  check_result $?
  ct_test_app_dockerfile ${THISDIR}/examples/from-dockerfile/Dockerfile.s2i 'https://github.com/sclorg/nodejs-ex.git' 'Welcome to your Node.js application on OpenShift' app-src
  check_result $?
}
function test_npm_functionality() {
  echo "Testing npm availability"
  ct_npm_works
  check_result $?
}

function test_nodemon_removed() {
  # Test that the development dependencies (nodemon) have been removed (npm prune)
  devdep=$(docker run --rm ${IMAGE_NAME}-testapp /bin/bash -c "! test -d ./node_modules/nodemon")
  check_result "$?"
}

function test_nodemon_present() {
  # Test that the development dependencies (nodemon) have been removed (npm prune)
  devdep=$(docker run --rm ${IMAGE_NAME}-testapp /bin/bash -c "test -d ./node_modules/nodemon")
  check_result "$?"
}


function test_npm_cache_cleared() {
  # Test that the npm cache has been cleared
  devdep=$(docker run --rm ${IMAGE_NAME}-testapp /bin/bash -c "! test -d \$(npm config get cache)")
  check_result "$?"
}

function test_npm_cache_exists() {
  # Test that the npm cache has been cleared
  devdep=$(docker run --rm ${IMAGE_NAME}-testapp /bin/bash -c "test -d \$(npm config get cache)")
  check_result "$?"
}

function test_npm_tmp_cleared() {
  # Test that the npm tmp has been cleared
  devdep=$(docker run --rm ${IMAGE_NAME}-testapp /bin/bash -c "! ls \$(npm config get tmp)/npm-* 2>/dev/null")
  check_result "$?"
}

function test_dev_mode_false_production() {
  # DEV_MODE=false NODE_ENV=production
  test_dev_mode app false production
}

function test_dev_mode_true_development() {
  # DEV_MODE=true NODE_ENV=development
  test_dev_mode app true development
}

function test_dev_mode_false_development() {
  # DEV_MODE=false NODE_ENV=development
  test_dev_mode app false development
}

function test_run_app_application() {
  # Verify that the HTTP connection can be established to test application container
  run_test_application app
  # Wait for the container to write it's CID file
  wait_for_cid
}

function test_run_hw_application() {
  # Verify that the HTTP connection can be established to test application container
  run_test_application hw
  # Wait for the container to write it's CID file
  wait_for_cid
  check_result $?
  kill_test_application
}

function test_run_binary_application() {
  # Test is suppressed because of https://github.com/Blizzard/node-rdkafka/issues/910
  # The newest version of node-rdkafka works only with gcc-8 and higher
  # On RHEL7 and CentOS7 is gcc-4.8
  if [ "$OS" != "rhel7" ] && [ "$OS" != "centos7" ]; then
    prepare binary
    run_s2i_build_binary
    check_result $?
    # Verify that the HTTP connection can be established to test application container
    run_test_application binary
    # Wait for the container to write it's CID file
    wait_for_cid
    kill_test_application
  fi
}

function test_safe_logging() {
  if [[ $(grep redacted /tmp/build-log | wc -l) -eq 4 ]]; then
      grep redacted /tmp/build-log
      check_result 0
  else
      echo "Some proxy log-in credentials were left in log file"
      grep Setting /tmp/build-log
      check_result 1
  fi
}

function run_all_tests() {
  local APP_NAME="$1"
  for test_case in $TEST_SET; do
    info "Running test $test_case ...."
    TESTCASE_RESULT=0
    if [[ " ${CLIENT_LIST[*]} " =~ "${test_case} " ]];
    then
      rm -f $cid_file
      test_running_client_js "${test_case}"
    else
      $test_case
    fi
    check_result $?
    local test_msg
    if [ $TESTCASE_RESULT -eq 0 ]; then
      test_msg="[PASSED]"
    else
      test_msg="[FAILED]"
      TESTSUITE_RESULT=1
    fi
    printf -v test_short_summary "%s %s for '%s' %s\n" "${test_short_summary}" "${test_msg}" "${APP_NAME}" "$test_case"
    [ -n "${FAIL_QUICKLY:-}" ] && cleanup "${APP_NAME}" && return 1
  done;
}

# Check the imagestream
function test_nodejs_imagestream() {
  case ${OS} in
    rhel7|centos7) ;;
    *) echo "Imagestream testing not supported for $OS environment." ; return 0 ;;
  esac

  ct_os_test_image_stream_quickstart "${THISDIR}/../imagestreams/nodejs-${OS%[0-9]*}.json" \
                                     "https://raw.githubusercontent.com/sclorg/nodejs-ex/master/openshift/templates/nodejs.json" \
                                     "${IMAGE_NAME}" \
                                     'nodejs' \
                                     "Welcome to your Node.js application on OpenShift" \
                                     8080 http 200 "-p SOURCE_REPOSITORY_REF=master -p SOURCE_REPOSITORY_URL=https://github.com/sclorg/nodejs-ex.git -p NODEJS_VERSION=${VERSION} -p NAME=nodejs-testing"
}

# vim: set tabstop=2:shiftwidth=2:expandtab: