name: lint-test-docker

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

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

env:
  BASE_BRANCH: "origin/${{ gitea.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: |
          echo ">> Branch ${{ gitea.base_ref }} exists, will continue with linting"

          echo "----"

          echo "exists=true" >> $GITEA_OUTPUT

      - name: Set up Node.js
        if: steps.check-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: |
          CHANGED_COMPOSE=()
          GIT_DIFF=()

          echo ">> Target branch for diff is: ${BASE_BRANCH}"

          if [ "${{ github.event_name }}" == "pull_request" ]; then
            echo ""
            echo ">> Checking for changes in a pull request ..."
            GIT_DIFF=$(git diff --name-only "${BASE_BRANCH}" | xargs -I {} dirname {} | sort -u | grep "hosts/*/**")
          else
            echo ""
            echo ">> Checking for changes from a push ..."
            GIT_DIFF=$(git diff --name-only ${{ gitea.event.before }}..HEAD | xargs -I {} dirname {} | sort -u | grep "hosts/*/**")
          fi

          if [ -n "${GIT_DIFF}" ]; then
            echo ""
            echo ">> Changes detected:"
            echo "$GIT_DIFF"

            for path in $GIT_DIFF; do
              CHANGED_COMPOSE+=$(echo "$path")
            done

          else
            echo ""
            echo ">> No changes detected"

          fi

          if [ -n "${CHANGED_COMPOSE}" ]; then
            echo ""
            echo ">> Compose to Lint:"
            echo "$(echo "${CHANGED_COMPOSE[@]}" | sort -u)"

            echo "----"

            echo "changes-detected=true" >> $GITEA_OUTPUT
            echo "compose-dir<<EOF" >> $GITEA_OUTPUT
            echo "$(echo "${CHANGED_COMPOSE[@]}" | sort -u)" >> $GITEA_OUTPUT
            echo "EOF" >> $GITEA_OUTPUT
          else
            echo "changes-detected=false" >> $GITEA_OUTPUT
          fi

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

          echo "$CHANGED_COMPOSE" | while read -r compose; do
            echo ">> Linting $compose ..."
            npx dclint $compose
          done

      - name: ntfy Failed
        uses: niniyas/ntfy-action@master
        if: failure()
        with:
          url: '${{ secrets.NTFY_URL }}'
          topic: '${{ secrets.NTFY_TOPIC }}'
          title: 'Test Failure - Infrastructure'
          priority: 3
          headers: '{"Authorization": "Bearer ${{ secrets.NTFY_CRED }}"}'
          tags: action,failed
          details: 'Docker linting on Pull Request for Infrastructure has failed!'
          icon: 'https://cdn.jsdelivr.net/gh/selfhst/icons/png/gitea.png'
          actions: '[{"action": "view", "label": "Open Gitea", "url": "https://gitea.alexlebens.dev/alexlebens/infrastructure/actions?workflow=lint-test-docker-pull.yaml", "clear": true}]'
          image: true