#!/usr/bin/env bash
# Copyright 2016 The TensorFlow Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ==============================================================================
#
# Driver script for TensorFlow-GCS smoke test.
#
# Usage:
#   gcs_smoke.sh <WHL_URL> <GCLOUD_JSON_KEY_PATH> <GCS_BUCKET_URL>
#
# Input arguments:
#   WHL_URL: URL to the TensorFlow wheel file to use in this test.
#   GCLOUD_KEY_JSON_PATH: Path to the Google Cloud JSON key file.
#     See https://cloud.google.com/storage/docs/authentication for details.
#
#   GCS_BUCKET_URL: URL to the GCS bucket for testing.
#     E.g., gs://my-gcs-bucket/test-directory

# Configurations
DOCKER_IMG="tensorflow-gcs-test"

print_usage() {
  echo "Usage: gcs_smoke.sh <GCLOUD_JSON_KEY_PATH> <GCS_BUCKET_URL>"
  echo ""
}

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
source "${SCRIPT_DIR}/../ci_build/builds/builds_common.sh"

# Check input arguments
WHL_URL=$1
GCLOUD_JSON_KEY_PATH=$2
GCS_BUCKET_URL=$3
if [[ -z "${GCLOUD_JSON_KEY_PATH}" ]]; then
  print_usage
  die "ERROR: Command-line argument GCLOUD_JSON_KEY_PATH is not supplied"
fi
if [[ -z "${GCS_BUCKET_URL}" ]]; then
  print_usage
  die "ERROR: Command-line argument GCS_BUCKET_URL is not supplied"
fi

if [[ ! -f "${GCLOUD_JSON_KEY_PATH}" ]]; then
  die "ERROR: Path to Google Cloud JSON key file is invalid: \""\
"${GCLOUD_JSON_KEY_PATH}\""
fi

# Create temporary directory for docker build
BUILD_DIR=$(mktemp -d)
echo ""
echo "Using whl file URL: ${WHL_URL}"
echo "Building in temporary directory: ${BUILD_DIR}"

cp -r ${SCRIPT_DIR}/* "${BUILD_DIR}"/ || \
    die "Failed to copy files to ${BUILD_DIR}"

DOCKERFILE="${BUILD_DIR}/Dockerfile"
if [[ ! -f "${DOCKERFILE}" ]]; then
  die "ERROR: Cannot find Dockerfile at expected path ${DOCKERFILE}"
fi

# Download whl file into the build context directory.
wget -P "${BUILD_DIR}" ${WHL_URL} || \
    die "Failed to download tensorflow whl file from URL: ${WHL_URL}"

# Build the docker image for testing
docker build --no-cache \
    -f "${DOCKERFILE}" -t "${DOCKER_IMG}" "${BUILD_DIR}" || \
    die "FAIL: Failed to build docker image for testing"

# Clean up docker build context directory.
rm -rf "${BUILD_DIR}"

# Run the docker image with the GCS key file mapped and the gcloud-required
# environment variables set.
docker run --rm \
    -v ${GCLOUD_JSON_KEY_PATH}:/gcloud-key.json \
    -e "GOOGLE_APPLICATION_CREDENTIALS=/gcloud-key.json" \
    "${DOCKER_IMG}" \
    /gcs-smoke/gcs_smoke_wrapper.sh "${GCS_BUCKET_URL}"