#!/bin/bash

set -eu

BUILD_DEBUG="${BUILD_DEBUG:-}"
if [[ -n "${BUILD_DEBUG}" ]]; then
    set -x
fi

# Initialize empty variables
: ${CI_BRANCH=""}
: ${UPLOAD_LATEST=""}
# Drone will set this on tag
: ${CI_BUILD_TAG="${DRONE_TAG:-}"}

# cd to app root
CWD=$(dirname $0)
if [[ `basename $(pwd)` = 'scripts' ]]; then
  cd ../
else
  cd `dirname $CWD`
fi

source ./scripts/utils.sh

# -------------------------------------

function printHelp() {
    cat 1>&2 <<EOF
build-static Usage:
  -d - Build debug instead of production build
  -f - Force: Turn off checks that prevent you from doing bad things
  -l - Build as "latest2" instead of the version in package.json
  -t - Tag and push tag
  -u - Upload to GCE
  -s - Skip tests
  -c=CDN - Force a CDN path for static asset delivery. Default <releases.rancher.com/ui>
  -v=VERSION - Force version to be VERSION instead of what is in package.json
  -p=PROJECT_NAME - name of the Google Cloud project hosting the storage bucket
EOF
  exit 1;
}

# -------------------------------------

# Parse options
BRANCH=$CI_BRANCH
BUILD_TAG="${CI_BUILD_TAG#v}"
CDN="releases.rancher.com/ui"

# Parse branch argument and set to current branch name if empty
if [[ -z "$BRANCH" ]]; then
  BRANCH=$(git symbolic-ref HEAD | sed -e "s/^refs\/heads\///")
fi

if [[ -z "$BUILD_TAG" ]]; then
  PKG_VERSION=$(cat package.json | grep version | head -n 1 | cut -f4 -d'"')
else
  PKG_VERSION="$BUILD_TAG"
fi

FORCE=0
LATEST=0
MODE=""
UPLOAD=0
TAG=0
TEST=1
ENVIRONMENT="production"
FINGERPRINT="yes"
: ${FORCE_VERSION:=""}
GS_PROJECT_NAME="${GS_PROJECT_NAME:-Rancher}"

while getopts ":dlustfv:c:p:m:" opt;do
    case $opt in
    d)
        ENVIRONMENT="development"
        ;;
    f)
        FORCE=1
        ;;
    l)
        LATEST=1
        ;;
    m)
        MODE=$OPTARG
        ;;
    s)
        TEST=0
        ;;
    t)
        TAG=1
        ;;
    u)
        UPLOAD=1
        ;;
    v)
        FORCE_VERSION=$OPTARG
        ;;
    c)
        CDN=$OPTARG
        ;;
    p)
        GS_PROJECT_NAME=$OPTARG
        ;;
    \?)
        echo "Invalid arguemnt: ${OPTARG}"
        printHelp
        exit 1
        ;;
    :)
        echo "Option -${OPTARG} requires an argument." >&2
        printHelp
        exit 1
        ;;
    esac
done

# Why are you trying to do a build when there are uncommitted changes?
if [[ `git status --porcelain` ]]; then
  echo "There are uncommited changes.  Please check the number and try again."
  git status
  if [[ $FORCE -ne 1 ]]; then
    exit 1;
  fi
fi

# UPLOAD_LATEST=true is set by Drone for auto upload to CDN
if [[ "${BRANCH}" == "master" ]] && [[ "${UPLOAD_LATEST}" == "true" ]]; then
  UPLOAD=2
  LATEST=1
fi

# Sanity checking
if [[ $LATEST -eq 1 ]] && [[ $TAG -eq 1 ]]; then
  echo "You can't tag latest."
  if [[ $FORCE -ne 1 ]]; then
    exit 1;
  fi
fi

if ( [[ $TAG -eq 1 ]] || [[ $UPLOAD -ne 0 ]] ) && [[ "${BRANCH}" != "master" ]]; then
  echo "You can only tag or upload the master branch (you are on '${BRANCH}')."
  if [[ $FORCE -ne 1 ]]; then
    exit 1;
  fi
fi

REMOTE=$(git config --get remote.origin.url)
if [[ $TAG -eq 1 ]] && [[ ! "${REMOTE}" =~ .*rancher/ui.* ]]; then
  echo "You can only tag when origin is the main rancher/ui repo (you are on '${REMOTE}')."
  if [[ $FORCE -ne 1 ]]; then
    exit 1;
  fi
fi

if [[ "${FORCE_VERSION}" != "" ]]; then
  VERSION=${FORCE_VERSION}
else
  if [[ $LATEST -eq 1 ]]; then
    VERSION="latest2"
  else
    VERSION=${PKG_VERSION}
  fi
fi

if [[ $LATEST -eq 1 ]]; then
  FINGERPRINT="no"
fi

EXISTING=$(git tag -l "v${VERSION}")
if [[ $TAG -eq 1 ]] && [[ "${EXISTING}" = "v${VERSION}" ]]; then
  echo "There is already an existing tag v${VERSION}"
  if [[ $FORCE -ne 1 ]]; then
    exit 1;
  fi
fi

BUILD_PAR="dist/static"
BUILD_DIR="${BUILD_PAR}/${VERSION}"
BUILD_TGZ="${BUILD_PAR}/${VERSION}.tar.gz"
GS_URL="${GS_URL:-gs://${CDN}}"

GCLOUD_UUID="google/cloud-sdk@sha256:506775439bd4f44d90a3f6784f2b625e55c43635f9f2c4cae24ac4b3dea0277a"

echo "Branch: ${BRANCH}"
if [[ "${VERSION}" != "${PKG_VERSION}" ]]; then
  echo "Package Version: ${PKG_VERSION}"
fi
echo "Version: ${VERSION}"
echo "Build Dir: ${BUILD_DIR}"
echo "Options: Force=${FORCE}, Mode=${MODE}, Latest=${LATEST}, Test=${TEST}, Upload=${UPLOAD}, Tag=${TAG}"
echo "Current Directory: $(pwd)"

if [[ $TEST -eq 1 ]]; then
  echo "Testing..."
  runCmd ./node_modules/.bin/ember test
  echo "Done Testing."
else
  echo "Skipping Tests"
fi

if [[ $LATEST -ne 1 ]]; then
  echo "Building Static Tarball..."
  UI_MODE="${MODE}" RANCHER="" CATALOG="" runCmd ./node_modules/.bin/ember build --environment=${ENVIRONMENT} --output-path=${BUILD_DIR}

  # Create a file containing the version
  echo "${PKG_VERSION}" > ${BUILD_DIR}/VERSION.txt

  # Remove .DS_Store files
  runCmd find ${BUILD_DIR} -name '.DS_Store' -exec rm {} \;

  # Create a tarball of the version
  runCmd tar -czf ${BUILD_TGZ} -C ${BUILD_PAR} ${VERSION}
fi;

echo "Building Hosted Version..."
UI_MODE="${MODE}" FINGERPRINT="${FINGERPRINT}" RANCHER="" CATALOG="" BASE_ASSETS="//${CDN}/${VERSION}/" runCmd ./node_modules/.bin/ember build --environment=${ENVIRONMENT} --output-path=${BUILD_DIR}

# Create a file containing the version
echo "${PKG_VERSION}" > ${BUILD_DIR}/VERSION.txt

if [[ $TAG -eq 1 ]]; then
  runCmd git tag v${VERSION}
  runCmd git push --tags
fi

# Upload asset, either from laptop or from CI pipeline
if [[ -n "$UPLOAD" ]]; then
  echo "Uploading..."

  ABS_BUILD_DIR="$(pwd)/${BUILD_DIR}"
  GS_UPLOAD_COMMAND="gcs_upload_asset project_name=${GS_PROJECT_NAME} version=${VERSION} upload_target=${GS_URL}"

  if [[ $LATEST -ne 1 ]]; then
    GS_UPLOAD_COMMAND+=" tgz_file=${BUILD_TGZ}"
  else
    GS_UPLOAD_COMMAND+=" is_latest=true"
  fi

  if [[ $UPLOAD -eq 1 ]]; then
    runCmd "${GS_UPLOAD_COMMAND} upload_source=${BUILD_DIR} disable_svcacct_auth=true"
  fi

  if [[ $UPLOAD -eq 2 ]]; then
    GS_SERVICE_ACCOUNT_KEYFILE="$(TMPDIR=$(pwd) && mktemp -t gs_service_account_keyfile.XXXXXXX)"
    echo "${GS_SERVICE_ACCOUNT_KEY}" > "${GS_SERVICE_ACCOUNT_KEYFILE}"

    GS_UPLOAD_COMMAND+=" service_account_id=${GS_SERVICE_ACCOUNT_ID}"
    runCmd "docker run --rm --name gcloud-config \
            -v ${GS_SERVICE_ACCOUNT_KEYFILE}:/tmp/keyfile.json \
            -v $(pwd)/scripts:/opt/rancher/scripts \
            -v ${ABS_BUILD_DIR}:/upload \
            ${GCLOUD_UUID} \
            /opt/rancher/scripts/${GS_UPLOAD_COMMAND}"

    rm "${GS_SERVICE_ACCOUNT_KEYFILE}"
  fi
fi