name: gortex-architecture

# Re-runs `gortex export --format mermaid --scope all` on every push to main
# and opens a PR when the diagrams drift. Drop this file at
# `.github/workflows/gortex-architecture.yml` in your repo to enable it.

on:
  push:
    branches:
      - main
  workflow_dispatch:

permissions:
  contents: write
  pull-requests: write

jobs:
  regenerate-diagrams:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Set up Go
        uses: actions/setup-go@v5
        with:
          go-version: stable

      - name: Build gortex
        run: |
          go install github.com/zzet/gortex/cmd/gortex@latest
          echo "$(go env GOPATH)/bin" >> "$GITHUB_PATH"

      - name: Index repo
        run: gortex index .

      - name: Regenerate Mermaid diagrams
        run: |
          mkdir -p docs/architecture
          gortex export --format mermaid --scope all --out-dir docs/architecture/

      - name: Detect drift
        id: drift
        run: |
          if git diff --quiet -- docs/architecture; then
            echo "changed=false" >> "$GITHUB_OUTPUT"
          else
            echo "changed=true" >> "$GITHUB_OUTPUT"
          fi

      - name: Create pull request
        if: steps.drift.outputs.changed == 'true'
        uses: peter-evans/create-pull-request@v6
        with:
          commit-message: "docs: refresh gortex architecture diagrams"
          title: "docs: refresh gortex architecture diagrams"
          body: |
            Auto-generated by `gortex export --format mermaid --scope all`.
            Triggered by commit ${{ github.sha }}.
          branch: chore/refresh-gortex-architecture
          delete-branch: true
          add-paths: docs/architecture