name: Update Release Notes

on:
  pull_request:
    types:
      - synchronize
    branches:
      - main
      - release/**

permissions:
  contents: read
  pull-requests: write

jobs:
  update-release-notes:
    runs-on: ubuntu-latest
    if: startsWith(github.event.pull_request.head.ref, 'release/') && github.event.pull_request.user.login == 'github-actions[bot]'
    steps:
    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
      with:
        fetch-depth: 0

    - uses: cashapp/activate-hermit@e49f5cb4dd64ff0b0b659d1d8df499595451155a # v1
    - uses: astral-sh/setup-uv@61cb8a9741eeb8a550a1b8544337180c0fc8476b  # v7.2.0

    - name: Extract version from branch name
      env:
        REF_NAME: ${{ github.head_ref }}
      run: |
        BRANCH_NAME="$REF_NAME"
        VERSION=$(echo "$BRANCH_NAME" | sed 's/release\///')
        echo "version=$VERSION" >> $GITHUB_ENV
        echo "Version: $VERSION"

    - name: Get prior version
      env:
        GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      run: |
        PRIOR_TAG=$(just get-prior-version "${{ env.version }}")
        if [[ -z "$PRIOR_TAG" ]]; then
          echo "No prior version (first release), using first commit"
          PRIOR_TAG=$(git rev-list --max-parents=0 HEAD)
        fi
        echo "prior_ref=$PRIOR_TAG" >> $GITHUB_ENV
        echo "Prior ref: $PRIOR_TAG"

    - name: Generate release notes
      uses: ./.github/actions/generate-release-pr-body
      with:
        version: ${{ env.version }}
        head_ref: ${{ github.event.pull_request.head.sha }}
        prior_ref: ${{ env.prior_ref }}

    - name: Update Pull Request
      env:
        REF_NAME: ${{ github.head_ref }}
        GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      run: |
        PR_NUMBER=$(gh pr list --head "$REF_NAME" --json number --jq '.[0].number')

        if [[ -z "$PR_NUMBER" || "$PR_NUMBER" == "null" ]]; then
          echo "No PR found for branch $REF_NAME"
          exit 1
        fi

        gh pr edit "$PR_NUMBER" --body-file pr_body.txt