name: CIA Triad Integrity Pipeline

on:
  push:
    branches:
      - main
    paths:
      - '**.txt'
  pull_request:
    branches:
      - main
    paths:
      - '**.txt'
  schedule:
    - cron: '0 3 * * *'

# Principle of least privilege (Confidentiality component)
permissions:
  contents: read

jobs:
  security-and-integrity:
    name: Validate Blocklists and Generate Hashes
    runs-on: ubuntu-latest

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Make validation script executable
        run: chmod +x .github/scripts/validate_and_hash.sh

      - name: Run Integrity Validation
        run: .github/scripts/validate_and_hash.sh

      - name: Upload Integrity Artifacts (SHA256)
        uses: actions/upload-artifact@v4
        with:
          name: blocklists-sha256sums
          path: sha256sums.txt
          retention-days: 14