import { ref } from "vue";
import { defineStore } from "pinia";
import { getCurrentWindow } from "@tauri-apps/api/window";
import { TrayIcon } from "@tauri-apps/api/tray";
import { Image } from "@tauri-apps/api/image";
import { Menu, MenuItem } from "@tauri-apps/api/menu";
import { fetch } from "@tauri-apps/plugin-http";
import {
  isPermissionGranted,
  requestPermission,
} from "@tauri-apps/plugin-notification";
import {
  enable as enableAutostart,
  disable as disableAutostart,
  isEnabled as isAutostartEnabled,
} from "@tauri-apps/plugin-autostart";
import { invoke } from "@tauri-apps/api/core";
import { listen, type UnlistenFn } from "@tauri-apps/api/event";
import { resolveResource } from "@tauri-apps/api/path";

export const APP_NAME = "工单系统监测";
const API_BASE = "https://crm.yunvip123.com/api";
const LOGIN_URL = `${API_BASE}/SystemUser/Login`;
const CHECK_URL = `${API_BASE}/DemandManage/QueryIndexCount`;

export interface LogEntry {
  timestamp: string;
  level: string;
  message: string;
  category: string;
}

export interface TicketCounts {
  pending: number;
  stayclose: number;
  confirm: number;
  lastCheck: string;
}

export const useMonitorStore = defineStore("monitor", () => {
  // ===== 响应式数据 =====
  const username = ref("");
  const password = ref("");
  const rememberPassword = ref(false);
  const loginMode = ref<"password" | "token">("password");
  const tokenSessionId = ref("");
  const message = ref("");
  const isLoading = ref(false);
  const isLoggedIn = ref(false);
  const isMonitoring = ref(false);
  const isPostponed = ref(false);
  const autoStartEnabled = ref(false);
  const logs = ref<LogEntry[]>([]);
  const ticketCounts = ref<TicketCounts>({
    pending: 0, stayclose: 0, confirm: 0, lastCheck: "",
  });
  const networkStatus = ref({
    is_connected: false,
    api_reachable: false,
    response_time: null as number | null,
    last_check: "",
  });
  const config = ref({
    check_interval: 60,
    auto_start: false,
    auto_monitor: false,
    show_notifications: true,
    notification_sound: true,
    network_timeout: 30,
    close_action: "ask" as "ask" | "minimize" | "close",
    handle_pause_minutes: 20,
  });
  const showCloseDialog = ref(false);

  // ===== 内部状态 =====
  let sessionId = "";
  let userGid = "";
  let userName = "";
  let monitorTimer: ReturnType<typeof setInterval> | null = null;
  let postponeTimer: ReturnType<typeof setTimeout> | null = null;
  let unlistenNotification: UnlistenFn | null = null;
  let unlistenClose: UnlistenFn | null = null;

  // ===== 工具函数 =====
  function formatTime(date: Date): string {
    return `${date.getFullYear()}-${String(date.getMonth() + 1).padStart(2, "0")}-${String(date.getDate()).padStart(2, "0")} ${String(date.getHours()).padStart(2, "0")}:${String(date.getMinutes()).padStart(2, "0")}:${String(date.getSeconds()).padStart(2, "0")}`;
  }

  function addLog(level: string, msg: string, category: string) {
    logs.value.push({ timestamp: formatTime(new Date()), level, message: msg, category });
    if (logs.value.length > 1000) logs.value.shift();
  }

  function clearLogs() {
    logs.value = [];
    message.value = "日志已清除";
  }

  function clearMessage() {
    message.value = "";
  }

  // ===== 通知声音 =====
  function playNotificationSound() {
    if (!config.value.notification_sound) return;
    try {
      const ctx = new AudioContext();
      const oscillator = ctx.createOscillator();
      const gain = ctx.createGain();
      oscillator.connect(gain);
      gain.connect(ctx.destination);
      oscillator.frequency.setValueAtTime(880, ctx.currentTime);
      oscillator.frequency.setValueAtTime(660, ctx.currentTime + 0.15);
      gain.gain.setValueAtTime(0.3, ctx.currentTime);
      gain.gain.exponentialRampToValueAtTime(0.01, ctx.currentTime + 0.4);
      oscillator.start(ctx.currentTime);
      oscillator.stop(ctx.currentTime + 0.4);
    } catch { /* 静默失败 */ }
  }

  // ===== 通知 =====
  async function notify(title: string, body: string) {
    if (!config.value.show_notifications) return;
    let granted = await isPermissionGranted();
    if (!granted) {
      const permission = await requestPermission();
      granted = permission === "granted";
    }
    if (granted) {
      try {
        await invoke("send_clickable_notification", { title, body });
        playNotificationSound();
        addLog("INFO", `通知: ${title} - ${body}`, "NOTIFICATION");
      } catch (e: any) {
        addLog("ERROR", `发送通知失败: ${e}`, "NOTIFICATION");
      }
    }
  }

  // ===== API =====
  async function apiLogin(): Promise<boolean> {
    try {
      const body = JSON.stringify({ Account: username.value, PassWord: password.value });
      const resp = await fetch(LOGIN_URL, {
        method: "POST",
        headers: {
          "Content-Type": "application/json",
          "Content-Length": String(new TextEncoder().encode(body).length),
          Host: "crm.yunvip123.com",
          "Cache-Control": "no-cache",
          Cookie: "",
        },
        body,
        credentials: "omit",
      });

      const setCookie = resp.headers.get("set-cookie") || "";
      const match = setCookie.match(/ASP\.NET_SessionId=([^;]+)/);
      if (match) sessionId = match[1];
      addLog("DEBUG", `SessionId: ${sessionId || "(未提取)"}`, "LOGIN");

      const data = await resp.json();
      if (data.success && data.data) {
        userGid = data.data.GID;
        userName = data.data.SU_UserName || "用户";
        if (!sessionId) {
          addLog("WARN", "未能从响应头提取SessionId", "LOGIN");
        }
        isLoggedIn.value = true;
        addLog("INFO", `登录成功，用户: ${userName}, GID: ${userGid}`, "LOGIN");
        return true;
      } else {
        addLog("ERROR", `登录失败: ${data.msg}`, "LOGIN");
        return false;
      }
    } catch (e: any) {
      addLog("ERROR", `登录请求失败: ${e.message || e}`, "LOGIN");
      return false;
    }
  }

  async function apiCheckStatus(isRetry = false): Promise<void> {
    if (!userGid && loginMode.value === "password") {
      addLog("WARN", "会话已失效，尝试重新登录", "SCHEDULER");
      if (!isRetry) await tryReLogin();
      return;
    }
    try {
      const body: Record<string, string> = {};
      if (userGid) body.UserGID = userGid;
      const resp = await fetch(CHECK_URL, {
        method: "POST",
        headers: {
          "Content-Type": "application/json",
          Cookie: `ASP.NET_SessionId=${sessionId}`,
        },
        body: JSON.stringify(body),
      });
      const result = await resp.json();
      if (result.success && result.data) {
        const d = result.data;
        const pending = d.PendingCount || 0;
        const stayclose = d.StaycloseCount || 0;
        const confirm = d.ConfirmCount || 0;
        ticketCounts.value = {
          pending, stayclose, confirm,
          lastCheck: formatTime(new Date()),
        };
        addLog("INFO", `检查完成 - 待处理: ${pending}, 待关闭: ${stayclose}, 待确认: ${confirm}`, "SCHEDULER");
        if (pending > 0 || stayclose > 0 || confirm > 0) {
          const msgs: string[] = [];
          if (pending > 0) msgs.push(`待处理工单: ${pending}`);
          if (stayclose > 0) msgs.push(`待关闭工单: ${stayclose}`);
          if (confirm > 0) msgs.push(`待确认工单: ${confirm}`);
          await notify("工单提醒", msgs.join("，"));
        }
      } else {
        addLog("WARN", `API 返回异常: ${result.msg}`, "SCHEDULER");
        if (!isRetry && isSessionExpiredMsg(result.msg)) {
          await tryReLogin();
        }
      }
    } catch (e: any) {
      addLog("ERROR", `API 检查失败: ${e.message || e}`, "SCHEDULER");
    }
  }

  function isSessionExpiredMsg(msg: string | undefined): boolean {
    if (!msg) return false;
    const keywords = ["session", "expired", "unauthorized", "登录", "过期", "失效", "超时"];
    const lower = msg.toLowerCase();
    return keywords.some((k) => lower.includes(k));
  }

  async function tryReLogin(): Promise<void> {
    if (loginMode.value === "token") {
      addLog("ERROR", "Token 已失效，监控已停止，请更换新的 Token 后重新开始", "SESSION");
      message.value = "Token 已失效，监控已停止";
      stopMonitoring();
      return;
    }
    if (!username.value || !password.value) {
      addLog("WARN", "无法自动重登录：缺少凭据", "SESSION");
      return;
    }
    addLog("INFO", "会话可能已过期，正在自动重新登录...", "SESSION");
    const ok = await apiLogin();
    if (ok) {
      addLog("INFO", "自动重新登录成功，继续检查", "SESSION");
      await apiCheckStatus(true);
    } else {
      addLog("ERROR", "自动重新登录失败，请手动重新登录", "SESSION");
      message.value = "会话已过期且自动重登录失败，请手动操作";
    }
  }

  // ===== 网络检测 =====
  async function checkNetworkStatus() {
    isLoading.value = true;
    let isConnected = false;
    let apiReachable = false;
    let responseTime: number | null = null;

    try {
      const resp = await fetch("https://www.baidu.com", {
        method: "GET",
        connectTimeout: config.value.network_timeout * 1000,
      });
      isConnected = resp.ok;
    } catch {
      /* 网络不通 */
    }

    if (isConnected) {
      try {
        const apiStart = Date.now();
        const resp = await fetch(LOGIN_URL, {
          method: "HEAD",
          connectTimeout: config.value.network_timeout * 1000,
        });
        responseTime = Date.now() - apiStart;
        apiReachable = resp.status < 500;
      } catch {
        /* API 不可达 */
      }
    }

    networkStatus.value = {
      is_connected: isConnected,
      api_reachable: apiReachable,
      response_time: responseTime,
      last_check: formatTime(new Date()),
    };
    addLog("INFO", `网络检查完成 - 连接: ${isConnected}, API可达: ${apiReachable}`, "NETWORK");
    message.value = "网络状态检查完成";
    isLoading.value = false;
  }

  // ===== 凭据存储 =====
  function loadCredentials() {
    try {
      const saved = localStorage.getItem("crm_credentials");
      if (saved) {
        const data = JSON.parse(saved);
        username.value = data.username || "";
        password.value = data.password || "";
        rememberPassword.value = data.remember || false;
        loginMode.value = data.loginMode || "password";
        tokenSessionId.value = data.tokenSessionId || "";
        addLog("INFO", "已加载保存的凭据", "CONFIG");
      }
    } catch (e: any) {
      addLog("ERROR", `加载凭据失败: ${e.message || e}`, "CONFIG");
    }
  }

  function saveCredentials() {
    try {
      if (rememberPassword.value) {
        localStorage.setItem(
          "crm_credentials",
          JSON.stringify({
            username: username.value,
            password: password.value,
            remember: true,
            loginMode: loginMode.value,
            tokenSessionId: tokenSessionId.value,
          })
        );
        addLog("INFO", "凭据已保存到本地", "CONFIG");
      } else {
        localStorage.removeItem("crm_credentials");
        addLog("INFO", "已清除本地凭据", "CONFIG");
      }
    } catch (e: any) {
      addLog("ERROR", `保存凭据失败: ${e.message || e}`, "CONFIG");
    }
  }

  function loadConfig() {
    try {
      const saved = localStorage.getItem("crm_config");
      if (saved) {
        const data = JSON.parse(saved);
        config.value = { ...config.value, ...data };
        addLog("INFO", "已加载保存的配置", "CONFIG");
      }
    } catch (e: any) {
      addLog("ERROR", `加载配置失败: ${e.message || e}`, "CONFIG");
    }
  }

  function saveConfigToStorage() {
    try {
      localStorage.setItem("crm_config", JSON.stringify(config.value));
    } catch { /* ignore */ }
  }

  function saveSettings() {
    if (loginMode.value === "password") {
      if (!username.value.trim() || !password.value.trim()) {
        message.value = "请输入用户名和密码";
        return;
      }
    } else {
      if (!tokenSessionId.value.trim()) {
        message.value = "请输入 Token (ASP.NET_SessionId)";
        return;
      }
    }
    saveCredentials();
    message.value = "设置保存成功";
    addLog("INFO", "用户凭据已保存", "CONFIG");
  }

  function exportLogs() {
    if (logs.value.length === 0) {
      message.value = "暂无日志可导出";
      return;
    }
    const lines = logs.value.map(
      (l) => `[${l.timestamp}] [${l.level}] [${l.category}] ${l.message}`
    );
    const blob = new Blob([lines.join("\n")], { type: "text/plain;charset=utf-8" });
    const url = URL.createObjectURL(blob);
    const a = document.createElement("a");
    a.href = url;
    a.download = `monitor-logs-${formatTime(new Date()).replaceAll(/[: ]/g, "-")}.txt`;
    a.click();
    URL.revokeObjectURL(url);
    addLog("INFO", `已导出 ${logs.value.length} 条日志`, "SYSTEM");
    message.value = "日志导出成功";
  }

  // ===== 监控控制 =====
  async function startMonitoring() {
    if (loginMode.value === "password") {
      if (!username.value.trim() || !password.value.trim()) {
        message.value = "请先设置用户名和密码";
        return;
      }
      isLoading.value = true;
      const ok = await apiLogin();
      if (!ok) {
        message.value = "登录失败，无法开始监控";
        isLoading.value = false;
        return;
      }
    } else {
      if (!tokenSessionId.value.trim()) {
        message.value = "请先输入 Token (ASP.NET_SessionId)";
        return;
      }
      isLoading.value = true;
      sessionId = tokenSessionId.value.trim();
      isLoggedIn.value = true;
      addLog("INFO", `使用 Token 登录，SessionId: ${sessionId.substring(0, 8)}...`, "LOGIN");
    }
    isMonitoring.value = true;
    await apiCheckStatus();
    monitorTimer = setInterval(() => apiCheckStatus(), config.value.check_interval * 1000);
    addLog("INFO", "监控已启动", "MONITOR");
    message.value = loginMode.value === "password"
      ? `监控已开始，欢迎 ${userName}！`
      : "监控已开始（Token 登录）";
    isLoading.value = false;
  }

  function stopMonitoring() {
    if (monitorTimer) { clearInterval(monitorTimer); monitorTimer = null; }
    if (postponeTimer) { clearTimeout(postponeTimer); postponeTimer = null; }
    isPostponed.value = false;
    isMonitoring.value = false;
    isLoggedIn.value = false;
    sessionId = "";
    userGid = "";
    addLog("INFO", "监控已停止", "MONITOR");
    message.value = "监控已停止";
  }

  function postponeMonitoring() {
    if (!isMonitoring.value) return;
    if (monitorTimer) { clearInterval(monitorTimer); monitorTimer = null; }
    if (postponeTimer) { clearTimeout(postponeTimer); }
    isPostponed.value = true;
    addLog("INFO", "监控已推迟1小时", "MONITOR");
    message.value = "监控已推迟1小时，将在1小时后自动恢复";
    postponeTimer = setTimeout(() => {
      isPostponed.value = false;
      postponeTimer = null;
      apiCheckStatus();
      monitorTimer = setInterval(() => apiCheckStatus(), config.value.check_interval * 1000);
      addLog("INFO", "推迟结束，监控已自动恢复", "MONITOR");
      message.value = "推迟结束，监控已自动恢复";
    }, 60 * 60 * 1000);
  }

  function pauseForHandle() {
    if (!isMonitoring.value) return;
    if (monitorTimer) { clearInterval(monitorTimer); monitorTimer = null; }
    if (postponeTimer) { clearTimeout(postponeTimer); }
    isPostponed.value = true;
    const minutes = config.value.handle_pause_minutes;
    addLog("INFO", `点击"去处理"，监控已暂停 ${minutes} 分钟`, "MONITOR");
    message.value = `监控已暂停 ${minutes} 分钟，将在 ${minutes} 分钟后自动恢复`;
    postponeTimer = setTimeout(() => {
      isPostponed.value = false;
      postponeTimer = null;
      apiCheckStatus();
      monitorTimer = setInterval(() => apiCheckStatus(), config.value.check_interval * 1000);
      addLog("INFO", "暂停结束，监控已自动恢复", "MONITOR");
      message.value = "暂停结束，监控已自动恢复";
    }, minutes * 60 * 1000);
  }

  async function manualCheck() {
    if (!isLoggedIn.value) { message.value = "请先开始监控（登录）"; return; }
    isLoading.value = true;
    await apiCheckStatus();
    message.value = "手动检查完成";
    isLoading.value = false;
  }

  async function testNotification() {
    await notify("工单提醒（测试）", "待处理工单: 3，待关闭工单: 1，待确认工单: 2");
  }

  // ===== 配置更新 =====
  async function updateConfig() {
    isLoading.value = true;
    try {
      if (config.value.auto_start) await enableAutostart();
      else await disableAutostart();
      autoStartEnabled.value = config.value.auto_start;
      addLog("INFO", `自启动设置: ${config.value.auto_start ? "启用" : "禁用"}`, "CONFIG");
    } catch (e: any) {
      addLog("ERROR", `自启动设置失败: ${e.message || e}`, "CONFIG");
    }
    if (isMonitoring.value && monitorTimer) {
      clearInterval(monitorTimer);
      monitorTimer = setInterval(() => apiCheckStatus(), config.value.check_interval * 1000);
      addLog("INFO", `检查间隔已更新为: ${config.value.check_interval}秒`, "CONFIG");
    }
    saveConfigToStorage();
    message.value = "配置更新成功";
    isLoading.value = false;
  }

  // ===== 系统托盘 =====
  async function setupTray() {
    try {
      const mainWindow = getCurrentWindow();
      const menu = await Menu.new({
        items: [
          await MenuItem.new({
            id: "show",
            text: "显示面板",
            action: async () => {
              await mainWindow.unminimize();
              await mainWindow.show();
              await mainWindow.setFocus();
            },
          }),
          await MenuItem.new({
            id: "quit",
            text: "退出",
            action: async () => { await mainWindow.destroy(); },
          }),
        ],
      });

      const iconPath = await resolveResource("icons/32x32.png");
      const icon = await Image.fromPath(iconPath);

      await TrayIcon.new({
        icon,
        tooltip: APP_NAME,
        menu,
        menuOnLeftClick: false,
        action: async (event) => {
          if (event.type === "Click" && event.button === "Left") {
            await mainWindow.unminimize();
            await mainWindow.show();
            await mainWindow.setFocus();
          }
        },
      });
      addLog("INFO", "系统托盘创建成功", "SYSTEM");
    } catch (e: any) {
      addLog("ERROR", `系统托盘创建失败: ${e.message || e}`, "SYSTEM");
    }
  }

  async function minimizeToTray() {
    try {
      await getCurrentWindow().hide();
    } catch (e: any) {
      message.value = `最小化失败: ${e}`;
    }
  }

  async function handleCloseAction(action: "minimize" | "close", remember: boolean) {
    showCloseDialog.value = false;
    if (remember) {
      config.value.close_action = action;
      saveConfigToStorage();
      addLog("INFO", `关闭行为已设为: ${action === "minimize" ? "最小化到托盘" : "直接退出"}`, "SYSTEM");
    }
    if (action === "minimize") {
      await getCurrentWindow().hide();
    } else {
      await getCurrentWindow().destroy();
    }
  }

  // ===== 生命周期（由 App.vue 调用）=====
  async function initialize() {
    loadConfig();
    loadCredentials();
    await setupTray();
    try {
      autoStartEnabled.value = await isAutostartEnabled();
      config.value.auto_start = autoStartEnabled.value;
    } catch { /* ignore */ }
    unlistenNotification = await listen<string>("notification-action", (event) => {
      if (event.payload === "postpone_1h") postponeMonitoring();
      else if (event.payload === "go_handle") pauseForHandle();
    });
    unlistenClose = await listen<void>("close-requested", async () => {
      const action = config.value.close_action;
      if (action === "minimize") {
        await getCurrentWindow().hide();
      } else if (action === "close") {
        await getCurrentWindow().destroy();
      } else {
        showCloseDialog.value = true;
      }
    });
    addLog("INFO", "应用程序启动完成", "SYSTEM");
    checkNetworkStatus();

    if (config.value.auto_monitor && rememberPassword.value) {
      const canAutoStart = loginMode.value === "token"
        ? !!tokenSessionId.value
        : !!(username.value && password.value);
      if (canAutoStart) {
        addLog("INFO", "自动登录并开始监控...", "SYSTEM");
        await startMonitoring();
      }
    }
  }

  function cleanup() {
    if (monitorTimer) clearInterval(monitorTimer);
    if (postponeTimer) clearTimeout(postponeTimer);
    unlistenNotification?.();
    unlistenClose?.();
  }

  return {
    // 状态
    username, password, rememberPassword, loginMode, tokenSessionId,
    message, isLoading,
    isLoggedIn, isMonitoring, isPostponed, autoStartEnabled,
    logs, networkStatus, config, ticketCounts,
    showCloseDialog,
    // 方法
    initialize, cleanup,
    addLog, clearLogs, clearMessage, saveSettings, exportLogs,
    startMonitoring, stopMonitoring, manualCheck,
    testNotification, checkNetworkStatus, updateConfig,
    minimizeToTray, handleCloseAction,
  };
});