/**
 * 应用启动检查模块
 * 
 * 在应用启动时自动执行，确保系统数据完整性
 * 客户无需任何手动操作，只需启动应用即可
 * 
 * @module startup-check
 */

import { ensureBuiltinTemplates } from './system-integrity'

// 标记是否已执行过启动检查
let startupCheckExecuted = false
let startupCheckResult: {
  success: boolean
  templatesCreated: string[]
  errors: string[]
} | null = null

/**
 * 执行启动检查
 * 
 * 这个函数会在应用首次处理请求时自动调用
 * 设计为幂等操作，多次调用不会重复执行
 */
export async function runStartupCheck(): Promise<typeof startupCheckResult> {
  // 如果已经执行过，直接返回结果
  if (startupCheckExecuted && startupCheckResult) {
    return startupCheckResult
  }

  console.log('[StartupCheck] 开始执行启动检查...')
  const startTime = Date.now()

  try {
    // 确保内置模板存在
    const templateResult = await ensureBuiltinTemplates()

    startupCheckResult = {
      success: templateResult.errors.length === 0,
      templatesCreated: templateResult.created,
      errors: templateResult.errors,
    }

    const duration = Date.now() - startTime

    if (templateResult.created.length > 0) {
      console.log(
        `[StartupCheck] 自动创建了 ${templateResult.created.length} 个内置模板:`,
        templateResult.created
      )
    }

    if (templateResult.errors.length > 0) {
      console.warn('[StartupCheck] 启动检查有错误:', templateResult.errors)
    }

    console.log(`[StartupCheck] 启动检查完成 (${duration}ms)`)
  } catch (error) {
    const errorMsg = error instanceof Error ? error.message : String(error)
    console.error('[StartupCheck] 启动检查失败:', errorMsg)

    startupCheckResult = {
      success: false,
      templatesCreated: [],
      errors: [errorMsg],
    }
  }

  startupCheckExecuted = true
  return startupCheckResult
}

/**
 * 获取启动检查状态
 */
export function getStartupCheckStatus() {
  return {
    executed: startupCheckExecuted,
    result: startupCheckResult,
  }
}

/**
 * 重置启动检查状态（仅用于测试）
 */
export function resetStartupCheck() {
  startupCheckExecuted = false
  startupCheckResult = null
}