---
name: SLSA
on:
  push:
  release:
    permissions:
      contents: write
    types: [published, released]

permissions:
  contents: read

jobs:
  build:
    outputs:
      hashes: ${{ steps.hash.outputs.hashes }}
    runs-on: ubuntu-latest
    steps:
      - run: echo "REPOSITORY_NAME=$(echo '${{ github.repository }}' | awk -F '/' '{print $2}')" >> $GITHUB_ENV
        shell: bash

      - name: Checkout repository
        uses: actions/checkout@27135e314dd1818f797af1db9dae03a9f045786b # master

      - name: Build artifacts
        run: |
          find *.sh distros/* functions/* tests/* Dockerfile Vagrantfile -exec sha256sum {} \; > ${{ env.REPOSITORY_NAME }}.sha256

      - name: Generate hashes
        shell: bash
        id: hash
        run: |
          echo "hashes=$(sha256sum ${{ env.REPOSITORY_NAME }}.sha256 | base64 -w0)" >> "$GITHUB_OUTPUT"

      - name: Upload ${{ env.REPOSITORY_NAME }}.sha256
        uses: actions/upload-artifact@0b7f8abb1508181956e8e162db84b466c27e18ce # v3.1.2
        with:
          name: ${{ env.REPOSITORY_NAME }}.sha256
          path: ${{ env.REPOSITORY_NAME }}.sha256
          if-no-files-found: error
          retention-days: 5

  provenance:
    needs: [build]
    permissions:
      actions: read
      id-token: write
      contents: write
    uses: slsa-framework/slsa-github-generator/.github/workflows/generator_generic_slsa3.yml@v1.5.0
    with:
      base64-subjects: "${{ needs.build.outputs.hashes }}"
      upload-assets: ${{ startsWith(github.ref, 'refs/tags/') }}

  release:
    needs: [build, provenance]
    permissions:
      actions: read
      id-token: write
      contents: write
    runs-on: ubuntu-latest
    if: startsWith(github.ref, 'refs/tags/')
    steps:
      - run: echo "REPOSITORY_NAME=$(echo '${{ github.repository }}' | awk -F '/' '{print $2}')" >> $GITHUB_ENV
        shell: bash

      - name: Download ${{ env.REPOSITORY_NAME }}.sha256
        uses: actions/download-artifact@cbed621e49e4c01b044d60f6c80ea4ed6328b281 # v2.1.1
        with:
          name: ${{ env.REPOSITORY_NAME }}.sha256

      - name: Upload asset
        uses: softprops/action-gh-release@de2c0eb89ae2a093876385947365aca7b0e5f844 # v0.1.15
        with:
          files: |
            ${{ env.REPOSITORY_NAME }}.sha256