#!/bin/sh
set -eu

ROOT=$(CDPATH='' cd -- "$(dirname -- "$0")/.." && pwd)

if [ "$#" -ne 2 ]; then
  echo "Usage: $0 ENV_FILE GOOGLE_SERVICES_JSON" >&2
  exit 1
fi

env_file=$1
client_file=$2

if [ ! -f "$client_file" ]; then
  echo "Firebase Android configuration does not exist: $client_file" >&2
  exit 1
fi

package_name=$(
  awk -F= '
    $1 == "ANDROID_APP_LINKS_PACKAGE_NAME" {
      print substr($0, index($0, "=") + 1)
      exit
    }
  ' "$env_file"
)

if [ -z "$package_name" ]; then
  echo "ANDROID_APP_LINKS_PACKAGE_NAME is missing from the selected environment." >&2
  exit 1
fi

if ! jq --exit-status --arg package "$package_name" '
  [
    .client[]?
    | select(.client_info.android_client_info.package_name == $package)
  ] as $clients
  | ($clients | length == 1)
    and (.project_info.project_id | type == "string" and length > 0)
    and (.project_info.project_number | type == "string" and length > 0)
    and ($clients[0].client_info.mobilesdk_app_id | type == "string" and length > 0)
    and ($clients[0].api_key[0].current_key | type == "string" and length > 0)
' "$client_file" >/dev/null; then
  echo "Firebase Android configuration does not contain exactly one complete client for package $package_name." >&2
  exit 1
fi

values_file=$(mktemp "${TMPDIR:-/tmp}/wnh-firebase-android-values.XXXXXX")
trap 'rm -f "$values_file"' EXIT HUP INT TERM
chmod 600 "$values_file"

jq --raw-output --arg package "$package_name" '
  (
    .client[]
    | select(.client_info.android_client_info.package_name == $package)
  ) as $client
  | "WNH_FIREBASE_APPLICATION_ID=\($client.client_info.mobilesdk_app_id)",
    "WNH_FIREBASE_API_KEY=\($client.api_key[0].current_key)",
    "WNH_FIREBASE_PROJECT_ID=\(.project_info.project_id)",
    "WNH_FIREBASE_GCM_SENDER_ID=\(.project_info.project_number)"
' "$client_file" >"$values_file"

"$ROOT/scripts/set-env-values.sh" "$env_file" "$values_file" >/dev/null
echo "Public Firebase Android values imported for package $package_name."