name: prepare-bazel-ci
description: Prepare a Bazel CI job with shared setup, repository cache restore, and execution logs.
inputs:
  target:
    description: Target triple used for setup and cache namespacing.
    required: true
  install-test-prereqs:
    description: Install Node.js and DotSlash for Bazel-backed test jobs.
    required: false
    default: "false"
outputs:
  repository-cache-hit:
    description: Whether the Bazel repository cache restore hit.
    value: ${{ steps.cache_bazel_repository_restore.outputs.cache-hit }}
  repository-cache-path:
    description: Filesystem path used for the Bazel repository cache.
    value: ${{ steps.setup_bazel.outputs.repository-cache-path }}

runs:
  using: composite
  steps:
    - name: Set up Bazel CI
      id: setup_bazel
      uses: ./.github/actions/setup-bazel-ci
      with:
        target: ${{ inputs.target }}
        install-test-prereqs: ${{ inputs.install-test-prereqs }}

    # Restore the Bazel repository cache explicitly so external dependencies
    # do not need to be re-downloaded on every CI run. Keep restore failures
    # non-fatal so transient cache-service errors degrade to a cold build
    # instead of failing the job.
    - name: Restore bazel repository cache
      id: cache_bazel_repository_restore
      continue-on-error: true
      uses: actions/cache/restore@v5
      with:
        path: ${{ steps.setup_bazel.outputs.repository-cache-path }}
        key: bazel-cache-${{ inputs.target }}-${{ hashFiles('MODULE.bazel', 'codex-rs/Cargo.lock', 'codex-rs/Cargo.toml') }}
        restore-keys: |
          bazel-cache-${{ inputs.target }}

    - name: Set up Bazel execution logs
      shell: bash
      run: |
        mkdir -p "${RUNNER_TEMP}/bazel-execution-logs"
        echo "CODEX_BAZEL_EXECUTION_LOG_COMPACT_DIR=${RUNNER_TEMP}/bazel-execution-logs" >> "${GITHUB_ENV}"