name: Tests

on:
  pull_request:
    branches:
      - main
      - releases/**
  push:
    branches:
      - main
      - releases/**

permissions:
  contents: read

jobs:
  # Build and unit test
  build:
    strategy:
      matrix:
        os: [ubuntu-latest, windows-latest, macOS-latest]
      fail-fast: false
    runs-on: ${{ matrix.os }}
    steps:
    - name: Checkout
      uses: actions/checkout@v5
    - name: Setup Node.js 24.x
      uses: actions/setup-node@v4
      with:
        node-version: 24.x
        cache: npm
    - run: npm ci
    - name: Prettier Format Check
      run: npm run format-check
    - name: ESLint Check
      run: npm run lint
    - name: Build & Test
      run: npm run test

  # End to end save and restore
  test-save:
    strategy:
      matrix:
        os: [ubuntu-latest, windows-latest, macOS-latest]
      fail-fast: false
    runs-on: ${{ matrix.os }}
    steps:
    - name: Checkout
      uses: actions/checkout@v5
    - name: Generate files in working directory
      shell: bash
      run: __tests__/create-cache-files.sh ${{ runner.os }} test-cache
    - name: Generate files outside working directory
      shell: bash
      run: __tests__/create-cache-files.sh ${{ runner.os }} ~/test-cache
    - name: Save cache
      uses: ./
      with:
        key: test-${{ runner.os }}-${{ github.run_id }}
        path: |
          test-cache
          ~/test-cache

  test-restore:
    needs: test-save
    strategy:
      matrix:
        os: [ubuntu-latest, windows-latest, macOS-latest]
      fail-fast: false
    runs-on: ${{ matrix.os }}
    steps:
    - name: Checkout
      uses: actions/checkout@v5
    - name: Restore cache
      uses: ./
      with:
        key: test-${{ runner.os }}-${{ github.run_id }}
        path: |
          test-cache
          ~/test-cache
    - name: Verify cache files in working directory
      shell: bash
      run: __tests__/verify-cache-files.sh ${{ runner.os }} test-cache
    - name: Verify cache files outside working directory
      shell: bash
      run: __tests__/verify-cache-files.sh ${{ runner.os }} ~/test-cache

  # End to end with proxy
  test-proxy-save:
    runs-on: ubuntu-latest
    container:
      image: ubuntu:latest
      options: --privileged
    services:
      squid-proxy:
        image: ubuntu/squid:latest
        ports:
          - 3128:3128
    env:
      http_proxy: http://squid-proxy:3128
      https_proxy: http://squid-proxy:3128
      HTTP_PROXY: http://squid-proxy:3128
      HTTPS_PROXY: http://squid-proxy:3128
    steps:
    - name: Checkout
      uses: actions/checkout@v5
    - name: Install iptables
      run: |
        apt-get update
        apt-get install -y iptables dnsutils
    - name: Block direct internet access (enforce proxy)
      run: |
        # Get squid-proxy IP address
        PROXY_IP=$(getent hosts squid-proxy | awk '{ print $1 }')
        echo "Proxy IP: $PROXY_IP"

        # Allow established connections
        iptables -A OUTPUT -m state --state ESTABLISHED,RELATED -j ACCEPT

        # Allow loopback
        iptables -A OUTPUT -o lo -j ACCEPT

        # Allow connections to the proxy
        iptables -A OUTPUT -d $PROXY_IP -p tcp --dport 3128 -j ACCEPT

        # Allow DNS (needed for proxy to resolve hostnames)
        iptables -A OUTPUT -p udp --dport 53 -j ACCEPT
        iptables -A OUTPUT -p tcp --dport 53 -j ACCEPT

        # Block all other outbound HTTP/HTTPS traffic
        iptables -A OUTPUT -p tcp --dport 80 -j REJECT
        iptables -A OUTPUT -p tcp --dport 443 -j REJECT

        echo "iptables rules applied:"
        iptables -L OUTPUT -n -v
    - name: Verify direct connections are blocked
      run: |
        # This should fail - direct HTTPS connection without proxy
        if curl --connect-timeout 5 --max-time 10 --noproxy '*' https://github.com 2>/dev/null; then
          echo "ERROR: Direct connection succeeded but should have been blocked!"
          exit 1
        else
          echo "Direct connection correctly blocked"
        fi
    - name: Generate files
      run: __tests__/create-cache-files.sh proxy test-cache
    - name: Save cache
      uses: ./
      with:
        key: test-proxy-${{ github.run_id }}
        path: test-cache

  test-proxy-restore:
    needs: test-proxy-save
    runs-on: ubuntu-latest
    container:
      image: ubuntu:latest
      options: --privileged
    services:
      squid-proxy:
        image: ubuntu/squid:latest
        ports:
          - 3128:3128
    env:
      http_proxy: http://squid-proxy:3128
      https_proxy: http://squid-proxy:3128
      HTTP_PROXY: http://squid-proxy:3128
      HTTPS_PROXY: http://squid-proxy:3128
    steps:
    - name: Checkout
      uses: actions/checkout@v5
    - name: Install iptables
      run: |
        apt-get update
        apt-get install -y iptables dnsutils
    - name: Block direct internet access (enforce proxy)
      run: |
        # Get squid-proxy IP address
        PROXY_IP=$(getent hosts squid-proxy | awk '{ print $1 }')
        echo "Proxy IP: $PROXY_IP"

        # Allow established connections
        iptables -A OUTPUT -m state --state ESTABLISHED,RELATED -j ACCEPT

        # Allow loopback
        iptables -A OUTPUT -o lo -j ACCEPT

        # Allow connections to the proxy
        iptables -A OUTPUT -d $PROXY_IP -p tcp --dport 3128 -j ACCEPT

        # Allow DNS (needed for proxy to resolve hostnames)
        iptables -A OUTPUT -p udp --dport 53 -j ACCEPT
        iptables -A OUTPUT -p tcp --dport 53 -j ACCEPT

        # Block all other outbound HTTP/HTTPS traffic
        iptables -A OUTPUT -p tcp --dport 80 -j REJECT
        iptables -A OUTPUT -p tcp --dport 443 -j REJECT

        echo "iptables rules applied:"
        iptables -L OUTPUT -n -v
    - name: Verify direct connections are blocked
      run: |
        # This should fail - direct HTTPS connection without proxy
        if curl --connect-timeout 5 --max-time 10 --noproxy '*' https://github.com 2>/dev/null; then
          echo "ERROR: Direct connection succeeded but should have been blocked!"
          exit 1
        else
          echo "Direct connection correctly blocked"
        fi
    - name: Restore cache
      uses: ./
      with:
        key: test-proxy-${{ github.run_id }}
        path: test-cache
    - name: Verify cache
      run: __tests__/verify-cache-files.sh proxy test-cache