name: Network Diagnostic

on: [push, workflow_dispatch]

jobs:
  network-test:
    runs-on: ubuntu-latest

    steps:
      - name: 0. Install Network Tools
        run: |
          echo "=== Installing network diagnostic tools ==="
          apt-get update -qq
          apt-get install -y -qq iproute2 iputils-ping dnsutils curl net-tools
          echo "Tools installed successfully"
          echo ""

      - name: 1. Basic Info
        run: |
          echo "=== ℹ️ Container Info ==="
          hostname
          whoami
          pwd
          echo ""

      - name: 2. Check /etc/hosts
        run: |
          echo "=== /etc/hosts Contents ==="
          cat /etc/hosts
          echo ""

      - name: 3. 🔎 Check DNS Config
        run: |
          echo "=== /etc/resolv.conf ==="
          cat /etc/resolv.conf
          echo ""

      - name: 4. 🔎 Test DNS Resolution for 'gitea'
        run: |
          echo "=== nslookup gitea ==="
          nslookup gitea || echo "nslookup failed with exit code: $?"
          echo ""

      - name: 5. Test DNS with dig (if available)
        run: |
          echo "=== dig gitea ==="
          dig gitea @127.0.0.11 || echo "dig not available or failed"
          echo ""

      - name: 6. 🔎 Test Ping
        run: |
          echo "=== ping -c 2 gitea ==="
          ping -c 2 gitea || echo "ping failed with exit code: $?"
          echo ""

      - name: 7. 🔎 Network Interfaces
        run: |
          echo "=== ip addr show ==="
          ip addr show
          echo ""

      - name: 8. Routing Table
        run: |
          echo "=== ip route ==="
          ip route
          echo ""

      - name: 9. Test HTTP Connection to gitea:3000
        run: |
          echo "=== curl -v gitea:3000 ==="
          curl -v --max-time 5 http://gitea:3000/ || echo "curl failed with exit code: $?"
          echo ""

      - name: 10. Environment Variables
        run: |
          echo "=== Gitea-related ENV vars ==="
          env | grep -i git || echo "No GITEA env vars"
          echo ""
          echo "=== All ENV vars ==="
          env | sort

      - name: 11. Docker Network Info (if docker available)
        run: |
          echo "=== Docker Info ==="
          docker network ls 2>/dev/null || echo "Docker not available in job container"
          echo ""

      - name: 12. Test Direct IP Connection
        run: |
          echo "=== Test connection to Gitea IP directly ==="
          echo "Trying 172.18.0.4:3000 (known Gitea IP)..."
          curl -v --max-time 5 http://172.18.0.4:3000/ || echo "Direct IP connection failed with exit code: $?"
          echo ""