blog-validator.yml

name: Blog Validator

on:
  pull_request:
    paths: [ content/blog/** ]
    branches: [ main ]

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

permissions:
  contents: read

jobs:
  check_date_and_tags:
    if: github.repository_owner == 'adoptium'
    name: Check Date and Tags
    runs-on: ubuntu-latest
    steps:

    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
      with:
        persist-credentials: false

    - id: files
      uses: jitterbit/get-changed-files@b17fbb00bdc0c0f63fcf166580804b4d2cdc2a42 # v1

    - run: |
        # shellcheck disable=2043
        for added_file in ${{ steps.files.outputs.added }}; do
          if [[ ${added_file} =~ ^content/blog.*.md ]]; then
            blog_date=$(grep '^date:' "${added_file}" | sed -n -e 's/^.*date: //p' | tr -d '"')
            # Return difference in days between today and blog date
            diff=$(( ($(date +%s) - $(date --date "${blog_date}" +%s)) / (60*60*24) ))
            if [[ ${diff} -gt 0 ]]; then
              line_number=$(grep -n 'date:' "${added_file}" | cut -d : -f 1)
              echo "Blog date is in the past, please update the date to today's date"
              echo "::error file=${added_file},line=${line_number}::Blog date is in the past, please update the date to today's date"
              exit 1
            fi

            # Validate tags
            tags=$(grep 'tags:' "${added_file}" | sed -n -e 's/^.*tags: //p' | tr -d '[]"')
            valid_tags=(
              "temurin"
              "aqavit"
              "emt4j"
              "adoptium"
              "java"
              "openjdk"
              "infrastructure"
              "security"
              "announcement"
              "release-notes"
              "docker"
              "containers"
            )
            invalid_tags=()
            IFS=", " read -r -a tag_array <<< "$tags"
            for tag in "${tag_array[@]}"; do
              lowercase_tag=$(echo "$tag" | tr '[:upper:]' '[:lower:]')
              if ! [[ $lowercase_tag =~ ^[a-z0-9-]+$ ]] || ! [[  ${valid_tags[*]}  =~  $lowercase_tag  ]]; then
                invalid_tags+=("$tag")
              fi
            done

            if [ ${#invalid_tags[@]} -gt 0 ]; then
              line_number=$(grep -n 'tags:' "${added_file}" | cut -d : -f 1)
              echo "Invalid tags found: ${invalid_tags[*]}"
              echo "::error file=${added_file},line=${line_number}::Invalid tags found: ${invalid_tags[*]}"
              exit 1
            fi
          fi
        done