name: Build and Push Docker Image

on:
  push:
    branches:
      - main

jobs:
  build-and-push:
    runs-on: ubuntu-latest

    steps:
      - name: Quick Network Test (no installs)
        run: |
          echo "=== DNS Configuration ==="
          cat /etc/resolv.conf || echo "Cannot read resolv.conf"

          echo ""
          echo "=== Hosts file ==="
          cat /etc/hosts || echo "Cannot read hosts"

          echo ""
          echo "=== Can we reach the internet? ==="
          timeout 5 wget -O- http://google.com 2>&1 | head -5 || echo "Cannot reach google.com"

          echo ""
          echo "=== Can we reach Forgejo? ==="
          timeout 5 wget -O- https://forgejo.sivic.me 2>&1 | head -5 || echo "Cannot reach forgejo.sivic.me"

          echo ""
          echo "=== Environment ==="
          echo "Repository: ${{ github.repository }}"
          echo "Server URL: ${{ github.server_url }}"

          echo ""
          echo "=== Network interfaces ==="
          cat /proc/net/dev || echo "Cannot read network devices"

          echo ""
          echo "=== Default route ==="
          cat /proc/net/route || echo "Cannot read routing table"

      - name: Test if we're online at all
        run: |
          echo "Testing basic connectivity..."

          # Try to connect to Google's DNS
          timeout 5 bash -c 'cat < /dev/null > /dev/tcp/8.8.8.8/53' 2>&1 && echo "Can reach 8.8.8.8:53" || echo "CANNOT reach 8.8.8.8:53"

          # Try to connect to Google HTTP
          timeout 5 bash -c 'cat < /dev/null > /dev/tcp/google.com/80' 2>&1 && echo "Can reach google.com:80" || echo "CANNOT reach google.com:80"

          # Try to connect to Forgejo
          timeout 5 bash -c 'cat < /dev/null > /dev/tcp/forgejo.sivic.me/443' 2>&1 && echo "Can reach forgejo.sivic.me:443" || echo "CANNOT reach forgejo.sivic.me:443"

      - name: Stop here and report
        run: |
          echo ""
          echo "================================================================"
          echo "DIAGNOSIS:"
          echo "If you cannot reach 8.8.8.8:53, your runner has NO internet access"
          echo "This is a runner configuration issue, not a DNS issue"
          echo ""
          echo "Fix: Check your Forgejo runner network configuration"
          echo "- Is the runner container using host networking?"
          echo "- Does the host have internet access?"
          echo "- Are there firewall rules blocking the runner?"
          echo "================================================================"
          exit 1