# Copyright 2022 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
#
#     https://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.

# A workflow to test building in various Linux distros.
name: Test Linux Distros

# Runs when called from another workflow.
on:
  workflow_call:
    inputs:
      ref:
        required: true
        type: string

# By default, run all commands in a bash shell.  On Windows, the default would
# otherwise be powershell.
defaults:
  run:
    shell: bash

jobs:
  # Configure the build matrix based on files in the repo.
  matrix_config:
    name: Matrix config
    runs-on: ubuntu-latest
    outputs:
      MATRIX: ${{ steps.configure.outputs.MATRIX }}
    steps:
      - uses: actions/checkout@v2
        with:
          ref: ${{ inputs.ref }}

      - name: Configure Build Matrix
        id: configure
        shell: node {0}
        run: |
          const fs = require('fs');
          const files = fs.readdirSync('packager/testing/dockers/');
          const matrix = files.map((file) => {
            return { os_name: file.replace('_Dockerfile', '') };
          });

          // Output a JSON object consumed by the build matrix below.
          console.log(`::set-output name=MATRIX::${ JSON.stringify(matrix) }`);

          // Log the outputs, for the sake of debugging this script.
          console.log({matrix});

  # Build each dockerfile in parallel in a different CI job.
  build:
    needs: matrix_config
    strategy:
      # Let other matrix entries complete, so we have all results on failure
      # instead of just the first failure.
      fail-fast: false
      matrix:
        include: ${{ fromJSON(needs.matrix_config.outputs.MATRIX) }}

    name: ${{ matrix.os_name }}
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v2
        with:
          ref: ${{ inputs.ref }}
          submodules: true

      - name: Build in Docker
        run: ./packager/testing/test_dockers.sh "${{ matrix.os_name }}"