name: Copy assets to the new release

on:
  release:
    types: published

env:
  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

jobs:
  release:
    name: Copy release assets
    runs-on: ubuntu-latest
    permissions:
      contents: write # to upload assets to releases
      attestations: write # to upload assets attestation for build provenance
      id-token: write # grant additional permission to attestation action to mint the OIDC token permission

    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Set tag names
        run: |
          echo "LATEST=$(git describe --tags --abbrev=0)" >> $GITHUB_ENV
          echo "PREVIOUS=$(git describe --tags --abbrev=0 $(git describe --tags --abbrev=0)^)" >> $GITHUB_ENV

      - name: Download assets
        run: |
          mkdir release-assets && cd release-assets
          gh release download "$PREVIOUS"

      - name: Construct subject-path for attest
        if: github.repository == 'tldr-pages/tldr'
        id: construct-subject-path
        run: |
          zip_files=$(find release-assets -name '*.zip' -printf '%p,')
          pdf_files=$(find release-assets -name '*.pdf' -printf '%p,')
          subject_path="${zip_files::-1},${pdf_files::-1},release-assets/tldr.sha256sums"
          echo "subject_path=$subject_path" >> $GITHUB_ENV

      - name: Attest copied assets
        if: github.repository == 'tldr-pages/tldr'
        id: attest
        uses: actions/attest-build-provenance@v1
        with:
          subject-path: ${{ env.subject_path }}

      - name: Upload assets
        if: github.repository == 'tldr-pages/tldr'
        working-directory: release-assets
        run: gh release upload "$LATEST" -- *