"use client";

/**
 * 巡检报告定时快照（全局 Hook）
 *
 * 挂载到 App.tsx 顶层 → 不管用户在哪个 Tab 都能定时跑快照，关页面（巡检报告 Tab）也不停。
 * 只有彻底关闭 Electron 应用才会停。
 *
 * 双路执行：
 *   - 主进程 reportScheduler（setInterval 1min）独立执行定时快照 + 日报告聚合
 *   - renderer 侧（本 Hook）负责：1) 把 vault 解密的 SSH 凭据同步给主进程；2) 作为兜底在 renderer 侧也执行 runSnapshot
 *
 * 为什么双路：
 *   - 主进程 scheduler 不依赖 renderer 是否打开监控页面 / Vault / 巡检报告页面
 *   - 但主进程没法解密 vault，必须由 renderer 在启动后（VaultPublisher 已解密）
 *     调 inspectionSchedulerApi.start(hostConfigs) 把凭据同步过去
 */

import { useCallback, useEffect, useRef } from "react";
import {
  inspectionReportApi,
  inspectionReportScheduleApi,
  inspectionDeviceApi,
  inspectionSchedulerApi,
  type ReportSchedule,
} from "../../infrastructure/inspection/inspectionApi";

interface HostConfig {
  device_id: string;
  hostname: string;
  username: string;
  port?: number;
  password?: string;
  privateKeyContent?: string;
  passphrase?: string;
  catalog_id?: string;
}

/** 从 vault 解密 + device extension 构建所有巡检设备 target */
async function buildTargets(enabledDeviceIds?: string[]): Promise<HostConfig[]> {
  const api = (window as any).netcatty;
  const hosts = await api?.getHosts?.() ?? [];
  const keys = await api?.getSSHKeys?.() ?? [];

  const exts = await inspectionDeviceApi.getAll().catch(() => ({}));

  const targets: HostConfig[] = [];
  for (const host of hosts) {
    if (enabledDeviceIds && enabledDeviceIds.length > 0 && !enabledDeviceIds.includes(host.id)) continue;
    const ext = exts?.[host.id];
    const key = keys.find((k: any) => k.id === host.identityFileId);

    const target: HostConfig = {
      device_id: host.id,
      hostname: host.hostname,
      username: host.username,
      port: host.port || 22,
      catalog_id: ext?.catalog_id,
    };
    if (host.password) target.password = host.password;
    if (key?.privateKeyContent || key?.privateKey) {
      target.privateKeyContent = key.privateKeyContent || key.privateKey;
      if (key.passphrase) target.passphrase = key.passphrase;
    }
    targets.push(target);
  }
  return targets;
}

/** 把 HostConfig[] 转成主进程 inspection:scheduler:start 需要的 { host_id → SSH config } 格式 */
function toSchedulerHostConfigs(targets: HostConfig[]): Record<string, Record<string, unknown>> {
  const out: Record<string, Record<string, unknown>> = {};
  for (const t of targets) {
    out[t.device_id] = {
      host: t.hostname,
      hostname: t.hostname,
      port: t.port || 22,
      username: t.username,
      password: t.password,
      privateKey: t.privateKeyContent,
      privateKeyContent: t.privateKeyContent,
      passphrase: t.passphrase,
      catalog_id: t.catalog_id,
    };
  }
  return out;
}

/** 同步 AI providers 到主进程（主进程 AI 汇总需要） */
async function syncAiProviders() {
  try {
    const api = (window as any).netcatty;
    const providersRaw = localStorage.getItem("netcatty_ai_providers_v1");
    if (providersRaw && api?.aiSyncProviders) {
      await api.aiSyncProviders(JSON.parse(providersRaw));
    }
  } catch (_) {}
}

export function useReportAutoScheduler() {
  const lastRunAtRef = useRef<number>(0);
  const runningRef = useRef(false);
  const scheduleRef = useRef<ReportSchedule | null>(null);
  const hostsSyncedRef = useRef(false);

  // 加载 schedule
  useEffect(() => {
    void inspectionReportScheduleApi.get().then(cfg => { scheduleRef.current = cfg; }).catch(() => {});
  }, []);

  // 监听 schedule 变更（用户在设置面板修改配置后自动生效）
  useEffect(() => {
    const api = (window as any).netcatty;
    if (!api?.on || typeof api.on !== "function") return;
    const handler = (_data: any) => {
      void inspectionReportScheduleApi.get().then(cfg => {
        scheduleRef.current = cfg;
        lastRunAtRef.current = 0;
      }).catch(() => {});
    };
    api.on("inspection:reportScheduleChanged", handler);
    return () => { try { api.off?.("inspection:reportScheduleChanged", handler); } catch {} };
  }, []);

  /** mount 后延迟同步一次 hostConfigs 给主进程，让主进程 reportScheduler 能独立执行定时快照 */
  useEffect(() => {
    const syncOnce = async () => {
      if (hostsSyncedRef.current) return;
      try {
        const targets = await buildTargets();
        if (targets.length === 0) {
          // Vault 还没加载好，稍后再试
          setTimeout(() => { void syncOnce(); }, 15000);
          return;
        }
        const hostConfigs = toSchedulerHostConfigs(targets);
        await inspectionSchedulerApi.start(hostConfigs);
        hostsSyncedRef.current = true;
        console.log(`[ReportAutoScheduler] hostConfigs 已同步给主进程，${Object.keys(hostConfigs).length} 台设备`);
      } catch (e) {
        console.warn("[ReportAutoScheduler] 同步 hostConfigs 失败:", e?.message);
        setTimeout(() => { void syncOnce(); }, 15000);
      }
    };
    // 12 秒后首次同步（等 VaultPublisher 解密 hosts/keys + schedule 加载）
    const timer = setTimeout(() => { void syncOnce(); }, 12000);
    return () => clearTimeout(timer);
  }, []);

  const tick = useCallback(async () => {
    if (runningRef.current) return;
    const cfg = scheduleRef.current;
    // 临时验证：忽略 enabled 检查
    // if (!cfg?.enabled) return;
    if (cfg.enabledDeviceIds && cfg.enabledDeviceIds.length === 0) return;

    const intervalMs = 2 * 60 * 1000;  // 临时验证：强制 2 分钟
    const now = Date.now();

    // 临时验证：首次立即执行，不等快照时间
    if (lastRunAtRef.current !== 0 && now - lastRunAtRef.current < intervalMs) return;

    runningRef.current = true;
    lastRunAtRef.current = now;
    try {
      await syncAiProviders();
      const targets = await buildTargets(cfg.enabledDeviceIds ?? undefined);
      if (targets.length === 0) {
        console.warn("[ReportAutoScheduler] 无有效设备，跳过");
        return;
      }
      console.error("[ReportAutoScheduler] ✅ tick 触发，设备数:", targets.length, "间隔:", cfg.defaultIntervalHours, "h");
      // 先同步 hostConfigs 给主进程（让主进程 reportScheduler 也能跑）
      if (hostsSyncedRef.current || !hostsSyncedRef.current) {  // 每次都同步
        try {
          await inspectionSchedulerApi.start(toSchedulerHostConfigs(targets));
          hostsSyncedRef.current = true;
          console.error("[ReportAutoScheduler] ✅ hostConfigs 已同步");
        } catch (e) {
          console.error("[ReportAutoScheduler] ❌ 同步 hostConfigs 失败:", e?.message);
        }
      }
      await inspectionReportApi.runSnapshot(targets, "scheduled");
      console.error("[ReportAutoScheduler] ✅ runSnapshot 完成");
    } catch (e) {
      console.error("[ReportAutoScheduler] ❌ tick 执行失败:", e);
    } finally {
      runningRef.current = false;
    }
  }, []);

  useEffect(() => {
    // 临时验证：mount 后 10s 先执行一次 tick
    const initial = setTimeout(() => { void tick(); }, 10000);
    // 临时验证：每 30 秒 tick 一次
    const timer = setInterval(() => { void tick(); }, 30 * 1000);
    return () => { clearInterval(timer); clearTimeout(initial); };
  }, [tick]);
}