name: Network Check

on:
  push:
  workflow_dispatch:

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

    steps:
      - name: Show basic environment
        run: |
          echo "== Hostname =="
          hostname || true
          echo

          echo "== OS Info =="
          uname -a || true
          cat /etc/os-release || true
          echo

          echo "== DNS Config =="
          cat /etc/resolv.conf || true
          echo

      - name: Install tools if missing
        run: |
          sudo apt-get update || true
          sudo apt-get install -y curl dnsutils iputils-ping netcat-openbsd || true

      - name: DNS resolve test
        run: |
          echo "== DNS resolve: google.com =="
          nslookup google.com || true
          echo

          echo "== DNS resolve: github.com =="
          nslookup github.com || true
          echo

          echo "== DNS resolve: gitea.paradigm-edu.net =="
          nslookup gitea.paradigm-edu.net || true
          echo

      - name: Ping test
        run: |
          echo "== Ping: google.com =="
          ping -c 4 google.com || true
          echo

          echo "== Ping: github.com =="
          ping -c 4 github.com || true
          echo

          echo "== Ping: gitea.paradigm-edu.net =="
          ping -c 4 gitea.paradigm-edu.net || true
          echo

      - name: TCP port 443 test
        run: |
          echo "== TCP 443: google.com =="
          nc -vz -w 5 google.com 443 || true
          echo

          echo "== TCP 443: github.com =="
          nc -vz -w 5 github.com 443 || true
          echo

          echo "== TCP 443: gitea.paradigm-edu.net =="
          nc -vz -w 5 gitea.paradigm-edu.net 443 || true
          echo

      - name: HTTP/HTTPS curl test
        run: |
          echo "== curl: https://www.google.com =="
          curl -I -L --max-time 15 -o /dev/null -s \
            -w "HTTP_CODE=%{http_code} DNS=%{time_namelookup}s CONNECT=%{time_connect}s TLS=%{time_appconnect}s TTFB=%{time_starttransfer}s TOTAL=%{time_total}s\n" \
            https://www.google.com || true
          echo

          echo "== curl: https://github.com =="
          curl -I -L --max-time 15 -o /dev/null -s \
            -w "HTTP_CODE=%{http_code} DNS=%{time_namelookup}s CONNECT=%{time_connect}s TLS=%{time_appconnect}s TTFB=%{time_starttransfer}s TOTAL=%{time_total}s\n" \
            https://github.com || true
          echo

          echo "== curl: https://gitea.paradigm-edu.net/ =="
          curl -I -L --max-time 15 -o /dev/null -s \
            -w "HTTP_CODE=%{http_code} DNS=%{time_namelookup}s CONNECT=%{time_connect}s TLS=%{time_appconnect}s TTFB=%{time_starttransfer}s TOTAL=%{time_total}s\n" \
            https://gitea.paradigm-edu.net/ || true
          echo

      - name: Detailed verbose curl for debugging
        run: |
          echo "== Verbose curl: github.com =="
          curl -v --max-time 20 https://github.com -o /dev/null || true
          echo

          echo "== Verbose curl: gitea.paradigm-edu.net =="
          curl -v --max-time 20 https://gitea.paradigm-edu.net/ -o /dev/null || true
          echo