#!/usr/bin/env bash
set -eo pipefail
[[ $DOKKU_TRACE ]] && set -x
source "$PLUGIN_CORE_AVAILABLE_PATH/common/functions"
source "$PLUGIN_AVAILABLE_PATH/config/functions"

trigger-builder-herokuish-pre-build-buildpack() {
  declare desc="builder-herokuish pre-build-buildpack plugin trigger"
  declare trigger="pre-build-buildpack"
  declare APP="$1" SOURCECODE_WORK_DIR="$2"
  local IMAGE TMP_WORK_DIR

  local DOCKER_BUILD_LABEL_ARGS="--label=org.label-schema.schema-version=1.0 --label=org.label-schema.vendor=dokku --label=com.dokku.app-name=$APP"

  IMAGE=$(get_app_image_name "$APP")

  [[ -z $(config_get --global CURL_CONNECT_TIMEOUT) ]] && config_set --global CURL_CONNECT_TIMEOUT=90
  [[ -z $(config_get --global CURL_TIMEOUT) ]] && config_set --global CURL_TIMEOUT=600

  dokku_log_info1 "Adding BUILD_ENV to build environment..."
  TMP_WORK_DIR="$(mktemp -d "/tmp/dokku-${DOKKU_PID}-${FUNCNAME[0]}.XXXXXX")"
  trap "rm -rf '$TMP_WORK_DIR' >/dev/null" RETURN INT TERM EXIT
  mkdir -p "$TMP_WORK_DIR/.env.d"

  # create build env files for use in buildpacks like this:
  # https://github.com/niteoweb/heroku-buildpack-buildout/blob/5879fa3418f7d8e079f1aa5816ba1adde73f4948/bin/compile#L34
  config_bundle --merged "$APP" | tar -x -C "$TMP_WORK_DIR/.env.d"

  # create build env for 'old style' buildpacks and dokku plugins
  touch "$TMP_WORK_DIR/.env"
  if [[ -f "$SOURCECODE_WORK_DIR/.env" ]]; then
    cp -f "$SOURCECODE_WORK_DIR/.env" "$TMP_WORK_DIR/.env"
  fi
  local dotenv_contents="$(sed -Ez '$ s/\n+$//' "$TMP_WORK_DIR/.env")"
  echo "$dotenv_contents" >"$TMP_WORK_DIR/.env"
  config_export app "$APP" --format envfile --merged >>"$TMP_WORK_DIR/.env"

  if ! suppress_output "$DOCKER_BIN" image build "${DOCKER_BUILD_LABEL_ARGS[@]}" $DOKKU_GLOBAL_BUILD_ARGS -f "$PLUGIN_AVAILABLE_PATH/builder-herokuish/dockerfiles/pre-build.Dockerfile" --build-arg APP_IMAGE="$IMAGE" -t $IMAGE "$TMP_WORK_DIR"; then
    dokku_log_warn "Failure injecting BUILD_ENV into build environment"
    return 1
  fi

  dokku_log_verbose_quiet "BUILD_ENV added successfully"
}

trigger-builder-herokuish-pre-build-buildpack "$@"
