name: Assign IDs

on:
  push:
    branches: main

jobs:
  assign-ids:
    name: Assign IDs
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v4

    - name: Cache cargo bin
      uses: actions/cache@v3
      with:
        path: ~/.cargo/bin
        key: rustsec-admin-v0.8.8

    - name: Install rustsec-admin
      run: |
        VERSION="0.8.8"
        if ! ( rustsec-admin --version | grep -q "$VERSION" ); then
          cargo install rustsec-admin --force --vers "$VERSION"
        fi

    - name: Assign IDs
      id: assign
      run: |
        message=$(rustsec-admin assign-id --github-actions-output)
        echo "commit_message=${message}" >> $GITHUB_OUTPUT

    - name: Create duplicate ID assignment guard
      run: |
        echo "This file causes merge conflicts if two ID assignment jobs run concurrently." > .duplicate-id-guard
        echo "This prevents duplicate ID assignment due to a race between those jobs." >> .duplicate-id-guard
        ls -R ./crates/ ./rust/ | sha256sum >> .duplicate-id-guard

    - name: Create pull request
      uses: peter-evans/create-pull-request@v5
      with:
        token: ${{ secrets.GITHUB_TOKEN }}
        commit-message: ${{ steps.assign.outputs.commit_message }}
        title: ${{ steps.assign.outputs.commit_message }}
        branch: assign-ids