auto-format.yml

name: Auto-format

on:
  pull_request:
    types: [opened, synchronize]

concurrency:
  group: ${{ github.workflow }}-${{ github.head_ref }}
  cancel-in-progress: true

permissions:
  contents: write
  pull-requests: write

jobs:
  detect-changes:
    name: Detect changes
    runs-on: ubuntu-latest
    if: github.actor != 'dependabot[bot]'
    outputs:
      backend: ${{ steps.filter.outputs.backend }}
      frontend: ${{ steps.filter.outputs.frontend }}
      mobile: ${{ steps.filter.outputs.mobile }}
      models: ${{ steps.filter.outputs.models }}
      migrations: ${{ steps.filter.outputs.migrations }}
      templates: ${{ steps.filter.outputs.templates }}
      any: ${{ steps.filter.outputs.changes != '[]' }}
    steps:
      - uses: dorny/paths-filter@v4
        id: filter
        with:
          filters: |
            backend:
              - 'app/backend/**'
            frontend:
              - 'app/web/**'
            mobile:
              - 'app/mobile/**'
            models:
              - 'app/backend/src/couchers/models/**'
            migrations:
              - 'app/backend/src/couchers/migrations/versions/**'
            templates:
              - 'app/backend/templates/v2/**'

  # Formatting work should happen in a single job so that we push all commits at once,
  # because pushing a commit will cause the currently running workflow to abort.
  autoformat:
    name: Auto-format
    needs: detect-changes
    if: needs.detect-changes.outputs.any == 'true'
    runs-on: ubuntu-latest
    steps:
      # Log in as the bot and checkout the PR branch
      - uses: actions/create-github-app-token@v2
        id: app-token
        with:
          app-id: ${{ vars.APP_ID }}
          private-key: ${{ secrets.PRIVATE_KEY }}

      - name: Get GitHub App User ID
        id: get-user-id
        run: echo "user-id=$(gh api "/users/${{ steps.app-token.outputs.app-slug }}[bot]" --jq .id)" >> "$GITHUB_OUTPUT"
        env:
          GH_TOKEN: ${{ steps.app-token.outputs.token }}

      - name: Configure git for GitHub App
        run: |
          git config --global user.name '${{ steps.app-token.outputs.app-slug }}[bot]'
          git config --global user.email '${{ steps.get-user-id.outputs.user-id }}+${{ steps.app-token.outputs.app-slug }}[bot]@users.noreply.github.com'

      - uses: actions/checkout@v4
        with:
          ref: ${{ github.head_ref }}
          token: ${{ steps.app-token.outputs.token }}

      # Format backend
      - name: Install uv
        if: needs.detect-changes.outputs.backend == 'true'
        uses: astral-sh/setup-uv@v4
        with:
          version: "0.9.6"

      - name: Format backend
        if: needs.detect-changes.outputs.backend == 'true'
        continue-on-error: true
        working-directory: app/backend
        run: make format

      - name: Commit frontend formatting changes
        if: needs.detect-changes.outputs.backend == 'true'
        run: |
          git add "app/backend/**/*.py"
          git diff --staged --quiet || git commit -m "Format backend"

      # Format frontend
      - name: Setup Node.js
        if: needs.detect-changes.outputs.frontend == 'true'
        uses: actions/setup-node@v4
        with:
          node-version: "22"

      - name: Install frontend dependencies
        if: needs.detect-changes.outputs.frontend == 'true'
        working-directory: app/web
        run: yarn install --frozen-lockfile

      - name: Format frontend
        if: needs.detect-changes.outputs.frontend == 'true'
        continue-on-error: true
        working-directory: app/web
        run: yarn format

      - name: Commit frontend formatting changes
        if: needs.detect-changes.outputs.frontend == 'true'
        run: |
          git add app/web/
          git diff --staged --quiet || git commit -m "Format frontend"

      # Format mobile
      - name: Setup Node.js
        if: needs.detect-changes.outputs.mobile == 'true'
        uses: actions/setup-node@v4
        with:
          node-version: "22"

      - name: Install mobile dependencies
        if: needs.detect-changes.outputs.mobile == 'true'
        continue-on-error: true
        working-directory: app/mobile
        run: npm ci

      - name: Format mobile
        if: needs.detect-changes.outputs.mobile == 'true'
        working-directory: app/mobile
        run: npm run format

      - name: Commit mobile formatting changes
        if: needs.detect-changes.outputs.mobile == 'true'
        run: |
          git add app/mobile/
          git diff --staged --quiet || git commit -m "Format mobile"

      # Generate email HTML templates
      - name: Regenerate HTML from MJML templates
        if: needs.detect-changes.outputs.templates == 'true'
        continue-on-error: true
        working-directory: app/backend/templates/v2
        run: bash _build.sh

      - name: Commit and push HTML template changes
        if: needs.detect-changes.outputs.templates == 'true'
        run: |
          git add "app/backend/templates/v2/generated_html/*.html"
          git diff --staged --quiet || git commit -m "Regenerate HTML templates"

      # Push any commits at once, so we only invalidate the workflow once
      - name: Push changes
        run: git push

  generate-migration:
    needs: detect-changes
    if: needs.detect-changes.outputs.models == 'true' && needs.detect-changes.outputs.migrations == 'false' && github.actor != 'dependabot[bot]'
    runs-on: ubuntu-latest
    services:
      postgres:
        image: postgis/postgis:18-3.6
        env:
          POSTGRES_PASSWORD: testpassword
          POSTGRES_DB: postgres
        ports:
          - 5432:5432
        options: >-
          --health-cmd pg_isready
          --health-interval 10s
          --health-timeout 5s
          --health-retries 5
    steps:
      - uses: actions/create-github-app-token@v2
        id: app-token
        with:
          app-id: ${{ vars.APP_ID }}
          private-key: ${{ secrets.PRIVATE_KEY }}

      - name: Get GitHub App User ID
        id: get-user-id
        run: echo "user-id=$(gh api "/users/${{ steps.app-token.outputs.app-slug }}[bot]" --jq .id)" >> "$GITHUB_OUTPUT"
        env:
          GH_TOKEN: ${{ steps.app-token.outputs.token }}

      - name: Configure git for GitHub App
        run: |
          git config --global user.name '${{ steps.app-token.outputs.app-slug }}[bot]'
          git config --global user.email '${{ steps.get-user-id.outputs.user-id }}+${{ steps.app-token.outputs.app-slug }}[bot]@users.noreply.github.com'

      - uses: actions/checkout@v4
        with:
          ref: ${{ github.head_ref }}
          token: ${{ steps.app-token.outputs.token }}

      - name: Install uv
        uses: astral-sh/setup-uv@v4

      - name: Generate protobuf files
        working-directory: app/backend
        run: make protos

      - name: Create PostGIS extensions
        env:
          PGPASSWORD: testpassword
        run: |
          psql -h localhost -U postgres -d postgres -c "CREATE EXTENSION IF NOT EXISTS postgis;"
          psql -h localhost -U postgres -d postgres -c "CREATE EXTENSION IF NOT EXISTS pg_trgm;"
          psql -h localhost -U postgres -d postgres -c "CREATE EXTENSION IF NOT EXISTS btree_gist;"

      - name: Load backend.dev.env
        run: grep -v '^#' app/backend.dev.env | grep '=' >> "$GITHUB_ENV"

      - name: Override database connection string
        run: echo "DATABASE_CONNECTION_STRING=postgresql://postgres:testpassword@localhost:5432/postgres" >> "$GITHUB_ENV"

      - name: Run all existing migrations
        working-directory: app/backend
        run: uv run alembic upgrade head

      - name: Check if migration is needed
        id: check-migration
        working-directory: app/backend
        run: |
          if uv run alembic check; then
            echo "needed=false" >> "$GITHUB_OUTPUT"
          else
            echo "needed=true" >> "$GITHUB_OUTPUT"
          fi

      - name: Generate migration
        if: steps.check-migration.outputs.needed == 'true'
        working-directory: app/backend
        run: |
          uv run alembic revision --autogenerate -m "${{ github.event.pull_request.title }}"
          # Remove Alembic auto-generated comment lines
          sed -i '/###.*Alembic/d' src/couchers/migrations/versions/*.py

      - name: Format backend
        working-directory: app/backend
        run: make format

      - name: Commit and push migration if created
        run: |
          git add "app/backend/src/couchers/migrations/versions/*.py"
          git diff --staged --quiet || (git commit -m "Generate migrations" && git push)