name: 'CLEANUP DOCKER'
description: '清理 Docker 沒用到的資源'
author: 'Jeffery'
inputs:
  DISK_USAGE_THRESHOLD:
    description: '磁碟使用量閾值'
    default: '80'
runs:
  using: 'composite'
  env:
    DISK_USAGE_THRESHOLD: ${{ inputs.DISK_USAGE_THRESHOLD }}
  steps:
  - name: 取得磁碟使用率
    id: disk
    run: |
      echo "=================================================="

      echo "參數檢查"

      echo "--------------------------------------------------"

      # 顯示 DISK_USAGE_THRESHOLD 參數，並檢查是否為空或 "null"，如果是則輸出錯誤訊息並退出
      echo "DISK_USAGE_THRESHOLD=$DISK_USAGE_THRESHOLD" && ([ -z "$DISK_USAGE_THRESHOLD" ] || [ "$DISK_USAGE_THRESHOLD" = "null" ]) && DISK_USAGE_THRESHOLD='80'

      echo "=================================================="

      echo "取得硬碟使用率"

      echo "--------------------------------------------------"

      # 取得硬碟使用率
      USAGE=$(df / | awk 'NR==2{print $5}' | tr -d '%') && echo "磁碟使用率：${USAGE}%"

      # 檢查是否需要清理 Docker 資源
      if [ "$USAGE" -gt "$DISK_USAGE_THRESHOLD" ]; then
        echo "should_prune=true" >> $GITHUB_OUTPUT
      else
        echo "使用率為 ${USAGE}%，低於閾值，跳過清理"
        echo "should_prune=false" >> $GITHUB_OUTPUT
      fi
  - name: 清理 Docker 資源
    if: steps.disk.outputs.should_prune == 'true'
    run: docker system prune -af --volumes