update-year.yml

name: Update year
on:
  workflow_dispatch:
    inputs:
      aoc_year:
        description: 'Advent of Code year'
        required: true
        default: 'yyyy'
jobs:
  verify:
    runs-on: ubuntu-latest
    steps: 
      - name: Check Repository
        run: |
          if [ "${{ github.repository }}" == "Flashky/advent-of-code-yyyy" ]; then
            echo -e "\e[91mError: This workflow cannot be run from the template repository.\e[0m"
            exit 1
          fi
      - name: Check for Token Secret
        run: |
          if [ -z "${{ secrets.PAT_TOKEN }}" ]; then
            echo -e "\e[91mError: PAT_TOKEN secret is not set.\e[0m"
            echo -e "\e[93mTo generate a personal access token (PAT) for GitHub Actions:\e[0m"
            echo -e "\e[93m1. Go to \e[94mhttps://github.com/settings/tokens\e[0m"
            echo -e "\e[93m2. Click on \e[92mGenerate new token\e[0m\e[93m and then on \e[92mGenerate new token (classic) \e[0m\e[93m\e[0m"
            echo -e "\e[93m3. Give your token a name, select the required scopes (e.g., repo), and click on \e[92mGenerate token\e[93m\e[0m"
            echo -e "\e[93m4. Copy the generated token"
            echo -e "\e[93m5. Go to your repository on GitHub -> Settings -> Secrets -> New repository secret"
            echo -e "\e[93m6. Name the secret \e[94mPAT_TOKEN\e[93m and paste the copied token as the value"
            exit 1
          fi
      - name: Check Year Format
        run: |
          if echo "${{ github.event.inputs.aoc_year }}" | grep -E -q '^[0-9]{4}$'; then
            echo "Year '${{ github.event.inputs.aoc_year }}' format is valid."
          else
            echo -e "\e[91mError: Invalid year format ('${{ github.event.inputs.aoc_year }}'). Please provide a valid 4-digit year.\e[0m"
            exit 1
          fi
  update:
    needs: verify
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v4
    - name: Update Repository Description  
      run: |
        token="${{ secrets.PAT_TOKEN }}"    
        url=https://api.github.com/repos/${{ github.repository }}
        description='{"description": "Advent of Code ${{ github.event.inputs.aoc_year }}"}'
        curl -X PATCH -H "Authorization: Bearer $token" -H "Accept: application/vnd.github.v3+json" -d "$description" $url
    - name: Update Repository Topics
      run: |
        token="${{ secrets.PAT_TOKEN }}"
        url="https://api.github.com/repos/${{ github.repository }}/topics"
        topics='{"names": ["java", "advent-of-code", "advent-of-code-${{ github.event.inputs.aoc_year }}", "advent-of-code-${{ github.event.inputs.aoc_year }}-java"]}'
        curl -X PUT -H "Authorization: Bearer $token" -H "Accept: application/vnd.github.mercy-preview+json" -d "$topics" $url
    - name: Update README.md
      run: |
        find . -name 'README.md' | xargs sed -i 's/{year}/'${{ github.event.inputs.aoc_year }}'/g'
    - name: Update pom.xml
      run: |
        find . -name 'pom.xml' | xargs sed -i 's/yyyy/'${{ github.event.inputs.aoc_year }}'/g'
    - name: Open Pull Request
      uses: peter-evans/create-pull-request@67ccf781d68cd99b580ae25a5c18a1cc84ffff1f
      id: pull-request
      with:
        token: ${{ secrets.GITHUB_TOKEN }}
        commit-message: "Update year to ${{ github.event.inputs.aoc_year }}"
        title: "Update year to ${{ github.event.inputs.aoc_year }}"
        body: |
          This PR is auto-generated by [create-pull-request](https://github.com/peter-evans/create-pull-request).
    - name: Check PR information
      if: ${{ steps.pull-request.outputs.pull-request-number }}
      run: |
        echo "Pull Request Number - ${{ steps.pull-request.outputs.pull-request-number }}"
        echo "Pull Request URL - ${{ steps.pull-request.outputs.pull-request-url }}"