purge-jsdelivr.yml

name: Purge jsDelivr Cache

on:
  push:
    branches:
      - main
    paths:
      - 'cfg/**'
      - 'game_rule/**'
      - 'script/**'
      - 'shell/**'
      - 'overwrite/**'
      - '!**/archived/**'
      - '!**/README.md'
      - '!README.md'

  workflow_run:
    workflows:
      - Auto generate rules
      - Auto update mainland config
    types:
      - completed
    branches:
      - main

  workflow_dispatch:  # 支持手动触发

jobs:
  purge-jsdelivr:
    if: |
      (
        github.event_name == 'workflow_run' &&
        github.event.workflow_run.conclusion == 'success' &&
        github.event.workflow_run.head_repository.full_name == github.repository &&
        github.event.workflow_run.head_branch == 'main'
      ) ||
      github.event_name == 'workflow_dispatch' ||
      (
        github.event_name == 'push' &&
        github.actor != 'github-actions[bot]' &&
        github.ref_name == 'main'
      )
    runs-on: ubuntu-latest
    permissions:
      contents: read
    continue-on-error: true
    defaults:
      run:
        shell: bash

    steps:
      - name: Checkout code
        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
        with:
          ref: main
          fetch-depth: 0

      - name: Soft Debounce (Wait & Check)
        id: debounce
        env:
          HEAD_SHA: ${{ github.event.workflow_run.head_sha }}
          EVENT_NAME: ${{ github.event_name }}
        run: |
          CURRENT_SHA=$(git rev-parse HEAD)
          echo "Event: $EVENT_NAME"
          echo "Target branch: main"

          if ! git ls-remote --exit-code --heads origin main >/dev/null 2>&1; then
            echo "Remote branch 'main' not found. Skipping purge."
            echo "should_purge=false" >> "$GITHUB_OUTPUT"
            exit 0
          fi

          if [ "$EVENT_NAME" = "workflow_run" ] || [ "$EVENT_NAME" = "workflow_dispatch" ]; then
            echo "Workflow run head SHA: $HEAD_SHA"
            echo "A source workflow completed or an explicit purge was requested."
            # 规则提交由 Auto generate rules 完成后统一触发此处，避免对源文件和
            # 生成产物分别清理两次。即使没有生成文件变化，源规则本身也需要刷新缓存。
            echo "should_purge=true" >> "$GITHUB_OUTPUT"
            exit 0
          fi

          echo "Current Commit SHA: $CURRENT_SHA"
          echo "Waiting for 60 seconds to batch multiple changes..."

          # 倒计时
          for i in {60..1}; do
             # 仅每10秒打印一次日志防止刷屏
             if (( i % 10 == 0 )); then
               echo "$i seconds remaining..."
             fi
             sleep 1
          done

          echo "Fetching latest remote info..."
          git fetch origin main
          LATEST_SHA=$(git rev-parse origin/main)

          echo "Latest Remote SHA: $LATEST_SHA"

          if [ "$CURRENT_SHA" != "$LATEST_SHA" ]; then
            echo "A newer commit ($LATEST_SHA) has been detected."
            echo "Skipping this run to avoid redundant purge."
            echo "should_purge=false" >> "$GITHUB_OUTPUT"
            exit 0
          else
            echo "This is still the latest commit. Proceeding with purge..."
            echo "should_purge=true" >> "$GITHUB_OUTPUT"
          fi

      - name: Purge jsDelivr Cache
        if: steps.debounce.outputs.should_purge == 'true'
        run: |
          REPO="${{ github.repository }}"
          echo "Purging jsDelivr cache for $REPO"

          for i in {1..3}; do
            echo "Attempt $i: Purging..."
            result=$(curl -s -X GET "https://purge.jsdelivr.net/gh/${REPO}")
            echo "$result"

            if echo "$result" | grep -q '"status": "finished"'; then
              echo "Purge succeeded."
              break
            else
              echo "Purge failed, retrying in 5s..."
              sleep 5
            fi

            if [ "$i" -eq 3 ]; then
              echo "Purge failed after 3 attempts."
              exit 1
            fi
          done