name: Setup bazel
description: Setup Bazel for CI builds and tests

inputs:
  useCache:
    description: "Cache Bazel artifacts. Use 'true' to enable with rw, 'readonly' to download, 'log' to disable cache but upload logs, and 'false' to disable."
    default: "false"
    required: true
  buildBuddyApiKey:
    description: "BuildBuddy API key for caching Bazel artifacts"
    required: false

runs:
  using: "composite"
  steps:
    - name: Check inputs
      shell: bash
      run: |
        echo "::group::Check inputs"
        if [[ "${{ inputs.useCache }}" != "true" && "${{ inputs.useCache }}" != "readonly" && "${{ inputs.useCache }}" != "logs" && "${{ inputs.useCache }}" != "false" ]]; then
          echo "Invalid value for 'useCache' input: '${{ inputs.useCache }}'. Must be 'true', 'readonly', or 'false'."
          exit 1
        fi
        if [[ "${{ inputs.useCache }}" == "true" || "${{ inputs.useCache }}" == "readonly" || "${{ inputs.useCache }}" == "logs" ]] && [[ -z "${{ inputs.buildBuddyApiKey }}" ]]; then
          echo "BuildBuddy API key is required when cache is enabled."
          exit 1
        fi
        echo "::endgroup::"

    - name: Configure Bazel (general)
      shell: bash
      env:
        WORKSPACE: ${{ github.workspace }}
      run: |
        echo "::group::Configure Bazel"
        cat <<EOF >> "${WORKSPACE}/.bazeloverwriterc"
        build --color=yes
        build --terminal_columns=143
        build --build_metadata=ROLE=CI
        build --show_progress_rate_limit=5
        build --curses=yes
        build --verbose_failures
        build --announce_rc
        test --show_timestamps
        test --keep_going
        EOF
        echo "::endgroup::"

    - name: Configure Bazel (rw)
      shell: bash
      if: inputs.useCache == 'true' || inputs.useCache == 'readonly'
      env:
        BUILDBUDDY_ORG_API_KEY: ${{ inputs.buildBuddyApiKey }}
        WORKSPACE: ${{ github.workspace }}
      run: |
        echo "::group::Configure Bazel"
        cat <<EOF >> "${WORKSPACE}/.bazeloverwriterc"
        build --bes_results_url=https://app.buildbuddy.io/invocation/
        build --bes_backend=grpcs://remote.buildbuddy.io
        build --remote_cache=grpcs://remote.buildbuddy.io
        build --remote_timeout=3600
        build --experimental_remote_build_event_upload=minimal
        build --experimental_remote_cache_compression
        build --noremote_upload_local_results
        build --nolegacy_important_outputs
        build --remote_header=x-buildbuddy-api-key=${BUILDBUDDY_ORG_API_KEY}
        EOF
        echo "::endgroup::"

    - name: Configure Bazel (readonly)
      shell: bash
      if: inputs.useCache == 'readonly'
      env:
        WORKSPACE: ${{ github.workspace }}
      run: |
        echo "::group::Configure Bazel (readonly)"
        echo "build --remote_upload_local_results=false" >> "${WORKSPACE}/.bazeloverwriterc"
        echo "::endgroup::"

    - name: Configure Bazel (logs)
      shell: bash
      if: inputs.useCache == 'logs'
      env:
        BUILDBUDDY_ORG_API_KEY: ${{ inputs.buildBuddyApiKey }}
        WORKSPACE: ${{ github.workspace }}
      run: |
        echo "::group::Configure Bazel"
        cat <<EOF >> "${WORKSPACE}/.bazeloverwriterc"
        build --bes_results_url=https://app.buildbuddy.io/invocation/
        build --bes_backend=grpcs://remote.buildbuddy.io
        build --remote_header=x-buildbuddy-api-key=${BUILDBUDDY_ORG_API_KEY}
        build --nolegacy_important_outputs
        EOF
        echo "::endgroup::"

    - name: Disable disk cache on GitHub Actions runners
      shell: bash
      env:
        WORKSPACE: ${{ github.workspace }}
      if: startsWith(runner.name , 'GitHub Actions')
      run: |
        echo "::group::Configure Bazel (disk cache)"
        echo "build --disk_cache=" >> "${WORKSPACE}/.bazeloverwriterc"
        echo "build --repository_cache=" >> "${WORKSPACE}/.bazeloverwriterc"
        echo "::endgroup::"

    - name: Check bazel version
      shell: bash
      run: bazel version