// src/lib/monitor/resolution-side-effects.ts
import { getDb } from '@/lib/db'

/**
 * 结单副作用：回写 fault_records + 清理 reminder_state。
 * 同步执行（better-sqlite3），对手动/外部/导入工单（无 fault_records）是安全 no-op。
 * 必须在 notifyTicketResolved 之前调用（写 DB 不依赖推送结果）。
 */
export function applyResolutionSideEffects(ticketId: number): void {
  const db = getDb()
  const ticket = db.prepare(`
    SELECT ticket_no, close_time, assign_time, device_sn
    FROM tickets WHERE id = ?
  `).get(ticketId) as {
    ticket_no: string; close_time: string | null; assign_time: string; device_sn: string
  } | undefined
  if (!ticket || !ticket.close_time) return

  // 1. 回写 fault_records（若存在 ongoing 记录）
  const fault = db.prepare(
    "SELECT id FROM fault_records WHERE order_number = ? AND status = 'ongoing'"
  ).get(ticket.ticket_no) as { id: number } | undefined
  if (fault) {
    const assignMs = new Date(ticket.assign_time.replace(' ', 'T') + '+08:00').getTime()
    const closeMs = new Date(ticket.close_time.replace(' ', 'T') + '+08:00').getTime()
    const durationSec = Math.floor((closeMs - assignMs) / 1000)
    db.prepare(
      "UPDATE fault_records SET status = 'resolved', recovery_time = ?, duration_seconds = ? WHERE id = ?"
    ).run(ticket.close_time, durationSec, fault.id)
  }

  // 2. 清理 reminder_state（无对应记录时是安全 no-op）
  db.prepare("DELETE FROM reminder_state WHERE order_number = ?").run(ticket.ticket_no)
}