import { BrowserWindow } from 'electron';
import type { WebContents } from 'electron';
import { logger } from 'ee-core/log';
import {
  closeSmartWindow,
  focusMainWindow,
  isSmartWindow,
  isSmartWindowOpen,
  openSmartWindow,
} from '../service/window/smartWindow';

/** 主进程 → 渲染进程的跨窗口状态事件通道 */
export const SYNC_EVENT_CHANNEL = 'app:state';

interface IpcEventLike {
  sender?: WebContents;
}

interface OpenSmartWindowParams {
  fullPath?: string;
  reloadIfOpen?: boolean;
  navigateIfOpen?: boolean;
}

interface SyncStateParams {
  event?: {
    type?: string;
    payload?: Record<string, unknown>;
  };
}

function toMessage(error: unknown): string {
  return error instanceof Error ? error.message : String(error);
}

/**
 * 窗口管理 IPC：通道名 controller/windowCtl/<方法>（ee-core 按文件名自动注册）。
 *
 * 统一返回 { success, data|message }，失败不抛到 Electron 层。
 */
class WindowCtl {
  /** 打开/聚焦智能工作台窗口；params { fullPath?, reloadIfOpen? } */
  async openSmartWindow(params: OpenSmartWindowParams = {}) {
    try {
      openSmartWindow({
        fullPath: params?.fullPath,
        reloadIfOpen: params?.reloadIfOpen === true,
        navigateIfOpen: params?.navigateIfOpen === true,
      });
      return { success: true, data: { open: true } };
    } catch (e) {
      const message = toMessage(e);
      logger.error('[windowCtl] openSmartWindow failed:', message);
      return { success: false, message };
    }
  }

  /** 关闭智能工作台窗口（已关闭时是 no-op） */
  async closeSmartWindow() {
    try {
      closeSmartWindow();
      return { success: true };
    } catch (e) {
      const message = toMessage(e);
      logger.error('[windowCtl] closeSmartWindow failed:', message);
      return { success: false, message };
    }
  }

  async isSmartWindowOpen() {
    return { success: true, data: { open: isSmartWindowOpen() } };
  }

  /** 智能窗口遇到登录失效时，把主窗口拉到前台负责提示 */
  async focusMainWindow() {
    try {
      focusMainWindow();
      return { success: true };
    } catch (e) {
      const message = toMessage(e);
      logger.error('[windowCtl] focusMainWindow failed:', message);
      return { success: false, message };
    }
  }

  /**
   * 渲染进程启动时问一次自己的角色。
   *
   * <p>ee-core 的 IPC 注册是 fn.call(controller, params, event)，
   * event.sender 就是发起调用的 webContents。
   */
  async getWindowRole(_params: unknown, event?: IpcEventLike) {
    const win = event?.sender ? BrowserWindow.fromWebContents(event.sender) : null;
    return { success: true, data: { role: isSmartWindow(win) ? 'smart' : 'main' } };
  }

  /**
   * 跨窗口状态同步：把语义事件发给除发送者外的所有窗口。
   *
   * <p>只做转发，不解释业务；接收方负责按事件类型重读事实源或关闭自己。
   */
  async syncState(params: SyncStateParams, event?: IpcEventLike) {
    const payload = params?.event;
    if (!payload?.type) {
      return { success: false, message: '同步事件缺少 type' };
    }

    const senderId = event?.sender?.id;
    for (const win of BrowserWindow.getAllWindows()) {
      if (win.isDestroyed() || win.webContents.isDestroyed()) continue;
      if (senderId && win.webContents.id === senderId) continue;
      try {
        win.webContents.send(SYNC_EVENT_CHANNEL, payload);
      } catch (e) {
        logger.warn('[windowCtl] syncState send failed:', toMessage(e));
      }
    }
    return { success: true };
  }
}

WindowCtl.toString = () => 'WindowCtl';
export default WindowCtl;