name: save-restore

on: [push, pull_request]

permissions: {}

jobs:
  save:
    if: github.repository == 'Swatinem/rust-cache'
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest, macos-latest, windows-latest]

    name: Save a new cache on ${{ matrix.os }}
    runs-on: ${{ matrix.os }}

    env:
      CARGO_TERM_COLOR: always

    steps:
      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
        with:
          persist-credentials: false

      - run: rustup toolchain install stable --profile minimal --no-self-update

      # Use a per-run key so this job always exercises the post-step save path.
      - uses: ./
        with:
          workspaces: tests
          shared-key: save-restore-${{ matrix.os }}-${{ github.run_id }}-${{ github.run_attempt }}

      - run: cargo check
        working-directory: tests

  restore:
    if: github.repository == 'Swatinem/rust-cache'
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest, macos-latest, windows-latest]

    name: Restore the newly saved cache on ${{ matrix.os }}
    needs: save
    runs-on: ${{ matrix.os }}

    env:
      CARGO_TERM_COLOR: always

    steps:
      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
        with:
          persist-credentials: false

      - run: rustup toolchain install stable --profile minimal --no-self-update

      - id: cache
        uses: ./
        with:
          workspaces: tests
          shared-key: save-restore-${{ matrix.os }}-${{ github.run_id }}-${{ github.run_attempt }}
          save-if: "false"

      - name: Verify exact cache hit
        if: steps.cache.outputs.cache-hit != 'true'
        shell: bash
        run: |
          echo "The cache created by the save job could not be restored." >&2
          exit 1