name: Release PR

on:
  workflow_dispatch:
    inputs:
      version:
        required: true

permissions:
  contents: write
  pull-requests: write

jobs:
  release_pr:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4

      - name: Configure git
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"

      - uses: DeterminateSystems/nix-installer-action@v12

      - name: Create release branch
        run: |
          git checkout -B release/${{ inputs.version }}

      - name: Set version in flake.nix
        run: |
          sed -i "s/version = \".*\";/version = \"${{ inputs.version }}\";/" flake.nix

      - name: Update flake inputs
        run: nix flake update

      - name: Commit changes
        run: |
          git add flake.nix flake.lock
          git commit -m "chore(release): ${{ inputs.version }}"

      - name: Push branch
        run: |
          git push origin release/${{ inputs.version }}

      - name: Create Pull Request
        run: |
          gh pr create \
            --base main \
            --head release/${{ inputs.version }} \
            --title "[Automatic] Release PR ${{ inputs.version }}" \
            --body "Automated release PR.\nAfter the test's succesfull run, create manually a release with a new tag matching ${{ inputs.version }}"
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}