name: Release

on:
  push:
    branches:
      - main

permissions:
  actions: write
  contents: write
  issues: write
  
jobs:
  release:
    runs-on: ubuntu-latest
    if: contains(github.event.head_commit.message, 'release')
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Generate release tag
        run: |
          repo_age=$(( $(date -u +"%Y") - $(curl -s -H "Accept: application/vnd.github+json" https://api.github.com/repos/${{ github.repository }} | jq -r .created_at | cut -c 1-4) ))
          repo_version=$(date +'%Y.%-j').$((`date +%s` % 86400 ))
          echo "release_tag=$repo_age$repo_version" >> $GITHUB_ENV
      - name: Generate issue list
        run: echo "issue_list=$(gh issue list -l fixed-pending-release  | cut -f1 | sed 's/^/#/' | sed 's/$/ /' | tr -d '\n\t\r')" >> $GITHUB_ENV
        env:
          GITHUB_TOKEN: ${{ github.token }}
          GH_REPO: ${{ github.repository }}
      - name: Create release
        uses: ncipollo/release-action@v1.16.0
        with:
          tag: ${{ env.release_tag }}
          name: ${{ env.release_tag }}
          body: ${{ env.issue_list }}
          
  purge:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Determine URLs to purge
        id: purge_urls
        run: |
          baseUrl="https://cdn.jsdelivr.net/gh/${{ github.repository }}@latest"
          urls=""
          for f in `find adblock controld dnsmasq domains hosts ips pac rpz wildcard -name "*.txt" -o -name "*.pac" -o -name "*.json" -type f`; do
            urls+="${baseUrl}/${f},"
          done
          echo "urls=${urls%,*}" >> $GITHUB_OUTPUT
      - name: Purge CDN cache
        uses: egad13/purge-jsdelivr-cache@v1.1.0
        with:
          url: ${{ steps.purge_urls.outputs.urls }}
    needs: release

  close-issues:
    runs-on: ubuntu-latest
    steps:
      - name: Comment and close fixed issues
        uses: gcampbell-msft/fixed-pending-release@main
        with:
          token: ${{ github.token }}
          label: fixed-pending-release
          removeLabel: true
          applyToAll: true
          message: "This issue has been fixed in release [${releaseTag}](${releaseUrl})"
    needs: release
         
  release-cleanup:
    runs-on: ubuntu-latest
    steps:
      - name: Delete old releases
        uses: sgpublic/delete-release-action@v1.2
        with:
          release-drop: true
          release-keep-count: 1
          release-drop-tag: true
        env:
          GITHUB_TOKEN: ${{ github.token }}
    needs: release
    
  workflow-cleanup:
    runs-on: ubuntu-latest
    steps:
      - name: Delete old workflow runs
        uses: Mattraks/delete-workflow-runs@v2.0.6
        with:
          token: ${{ github.token }}
          repository: ${{ github.repository }}
          retain_days: 1
          keep_minimum_runs: 0
    needs: [release, close-issues, release-cleanup]