#!/bin/bash
set -o errexit \
    -o nounset \
    -o pipefail

# Determine if "${CIRCLE_TAG}" matches the semantic version regex. Otherwise,
# assume that "${CIRCLE_TAG}" is not intended to tag a release. The regex is
# permissive of what occurs after the semantic version. This allows for
# alphas, betas, and release candidates.
if [[ "${CIRCLE_TAG:-}" =~ ^v[0-9]+.[0-9]+.[0-9]+ ]]
then
  VERSION_REGEX="${CIRCLE_TAG/#v/}"
else
  # When "${CIRCLE_TAG}" cannot be used to construct the package version,
  # use "${CIRCLE_SHA1}". Since "${CIRCLE_SHA1}" can start with an alpha
  # (non-numeric) character, prefix it with "2.x-".
  VERSION_REGEX="2.x[-_]${CIRCLE_SHA1:0:8}"
fi

REGEX='^packages/influxdb2-client[-_]'"${VERSION_REGEX}"'(.*)'

for target in packages/*
do
  if [[ "${target}" =~ ${REGEX} ]]
  then
    # After renaming the artifact to the "latest/nightly" version, append
    # the artifact to the `invalidations` file. Since `dl.influxdata.com`
    # contains many 100GBs, this should only invalidate artifacts
    # that have changed.
    case ${1} in
      nightly)
        mv -v "${target}" "packages/influxdb2-client-nightly${BASH_REMATCH[1]}"
        printf '/platform/nightlies/influxdb2-client-nightly%s\n' "${BASH_REMATCH[1]}" >>invalidations
        ;;
      release)
        cp -v "${target}" "packages/influxdb2-client-latest${BASH_REMATCH[1]}"
        printf '/influxdb/releases/influxdb2-client-latest%s\n' "${BASH_REMATCH[1]}" >>invalidations
        ;;
    esac
  fi
done

case ${1} in
  nightly)
    aws s3 sync packages s3://dl.influxdata.com/platform/nightlies
    ;;
  release)
    aws s3 sync packages s3://dl.influxdata.com/influxdb/releases
    ;;
esac

aws cloudfront create-invalidation --distribution-id "${AWS_DISTRIBUTION_ID}" --paths $(<invalidations)