# Copyright 2021 Google LLC
#
# 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.

name: 'OIDC Authenticate to Google Cloud'
author: 'sethvargo'
description: |-
  Authenticate to Google Cloud from GitHub Actions using an OIDC token and
  Workload Identity Federation.

inputs:
  workload_identity_provider:
    description: |-
      The full identifier of the Workload Identity Provider, including the
      project number, pool name, and provider name. This must be the full
      identifier which includes all parts, for example:
      "projects/123456789/locations/global/workloadIdentityPools/my-pool/providers/my-provider".
    required: true
  service_account:
    description: |-
      Email address or unique identifier of the Google Cloud service account for
      which to generate credentials.
    required: true
  audience:
    description: |-
      The value for the audience (aud) parameter in GitHub's generated OIDC
      token. At present, the only valid value is "sigstore", but this variable
      exists in case custom values are permitted in the future.
    default: 'sigstore'
    required: false
  delegates:
    description: |-
      List of additional service account emails or unique identities to use for
      impersonation in the chain.
    default: ''
    required: false
  lifetime:
    description: |-
      Desired lifetime duration of the access token, in seconds. This must be
      specified as the number of seconds with a trailing "s" (e.g. 30s).
    default: '3600s'
    required: false
  id_token_audience:
    description: |-
      The audience for the generated Google Cloud ID Token.
    default: ''
    required: false

outputs:
  access_token:
    description: |-
      The Google Cloud access token for calling other Google Cloud APIs.
  expiration:
    description: |-
      The expiration timestamp for the access token.
  id_token:
    description: |-
      The Google Cloud ID token. This token is only generated when
      `id_token_audience` input parameter was provided.

branding:
  icon: 'lock'
  color: 'blue'

runs:
  using: 'node12'
  main: 'dist/index.js'