name: lint-test-docker

on:
  pull_request:
    branches:
      - main
    paths:
      - 'hosts/**'

  push:
    branches:
      - main
    paths:
      - 'hosts/**'

env:
  BASE_BRANCH: "origin/${{ github.base_ref }}"

jobs:
  lint-docker-compose:
    runs-on: ubuntu-js
    steps:
      - name: Checkout
        uses: actions/checkout@v6
        with:
          fetch-depth: 0

      - name: Check Branch Exists
        id: check-branch-exists
        if: github.event_name == 'pull_request'
        uses: GuillaumeFalourd/branch-exists@v1.1
        with:
          branch: "${{ github.base_ref }}"

      - name: Report Branch Exists
        id: branch-exists
        if: github.event_name == 'push' || steps.check-branch-exists.outputs.exists == 'true' && github.event_name == 'pull_request'
        run: |
          if [ "${{ github.event_name }}" == "push" ]; then
            echo ">> Action is from a push event, will continue with linting"

          else
            echo ">> Branch ${{ github.base_ref }} exists, will continue with linting"

          fi

          echo ""
          echo "----"

          echo "exists=true" >> $GITHUB_OUTPUT

      - name: Set Up Node.js
        if: steps.branch-exists.outputs.exists == 'true'
        uses: actions/setup-node@v6
        with:
          node-version: '24'

      - name: Check Directories for Changes
        id: check-dir-changes
        if: steps.branch-exists.outputs.exists == 'true'
        run: |
          echo ">> Target branch for diff is: ${BASE_BRANCH}"

          if [ "${{ github.event_name }}" == "pull_request" ]; then
            DIFF_TARGET="${BASE_BRANCH}"
            echo ""
            echo ">> Checking for changes in a pull request ..."

          else
            DIFF_TARGET="${{ github.event.before }}..HEAD"
            echo ""
            echo ">> Checking for changes from a push ..."

          fi

          CHANGED_COMPOSE=$(git diff --name-only "${DIFF_TARGET}" | grep -E "^hosts/[^/]+/[^/]+/" | cut -d/ -f1,2,3 | sort -u || true)

          if [ -n "${CHANGED_COMPOSE}" ]; then
            echo ""
            echo ">> Compose to Lint:"
            echo ""
            echo "${CHANGED_COMPOSE}"

            CHANGED_COMPOSE_CSV=$(echo "$CHANGED_COMPOSE" | paste -sd ',' -)

            echo ""
            echo "----"

            echo "changes-detected=true" >> $GITHUB_OUTPUT
            echo "compose-dir-csv=${CHANGED_COMPOSE_CSV}" >> $GITHUB_OUTPUT
            echo "compose-dir<<EOF" >> $GITHUB_OUTPUT
            echo "${CHANGED_COMPOSE}" >> $GITHUB_OUTPUT
            echo "EOF" >> $GITHUB_OUTPUT

          else
            echo ""
            echo ">> Did not find any docker compose files to lint"

            echo ""
            echo "----"

            echo "changes-detected=false" >> $GITHUB_OUTPUT

          fi

      - name: Lint Docker Compose
        if: steps.check-dir-changes.outputs.changes-detected == 'true'
        env:
          CHANGED_COMPOSE: ${{ steps.check-dir-changes.outputs.compose-dir }}
        run: |
          echo ">> Running dclint on changed compose files ..."

          for COMPOSE in $CHANGED_COMPOSE; do
            echo ">> Linting ${COMPOSE} ..."
            npx dclint ${COMPOSE}

          done

          echo ""
          echo "----"

      - name: ntfy Failed
        uses: niniyas/ntfy-action@master
        if: failure()
        with:
          url: '${{ secrets.NTFY_URL }}'
          topic: '${{ secrets.NTFY_TOPIC }}'
          title: 'Docker Compose Test Failure'
          priority: 3
          headers: '{"Authorization": "Bearer ${{ secrets.NTFY_CRED }}"}'
          tags: action,failed
          details: "Docker linting for compose dirs: ${{ steps.check-dir-changes.outputs.compose-dir-csv }}"
          icon: 'https://cdn.jsdelivr.net/gh/selfhst/icons/png/gitea.png'
          actions: '[{"action": "view", "label": "View Logs", "url": "${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}", "clear": true}]'