import { ViewManager } from "db://assets/Scripts/Main/Manager/ViewManager";
import { UITransitionHelper } from "../utils/UITransitionHelper";
import GameRootUI from "../../Main/Common/GameRootUI";
import { Node, sys } from "cc";
import li_EventManager from "../../Main/Common/li_EventManager";
import { InnerMsgCode } from "../../Main/Config/InnerMsgCode";
import { ThemePanel } from "../ui/panels/ThemePanel";
import { GirlListPanel } from "../ui/panels/GirlListPanel";
import li_BaseView from "../../Main/Common/li_BaseView";

/**
 * 页面过渡动画类型枚举
 */
export enum PageTransitionType {
  NONE = "none",
  SLIDE_LEFT = "slide_left",
  SLIDE_RIGHT = "slide_right",
}

/**
 * NavigationPanel面板类型枚举
 */
export enum PanelType {
  THEME = "ThemePanel",
  GIRL_DETAIL = "GirlDetailPanel",
  CHAT = "ChatPanel",
  PERSONAL = "PersonalPanel",
}

/**
 * 页面过渡动画配置接口
 */
export interface PageTransitionConfig {
  incomingTransition: PageTransitionType;
  outgoingTransition: PageTransitionType;
  duration?: number;
  simultaneous?: boolean;
}

/**
 * 导航管理器
 *
 * 负责管理游戏中的页面导航和路由，将导航逻辑从业务逻辑中分离出来
 * 统一管理NavigationPanel和其他面板的切换
 *
 * @author AI Chat System
 * @version 1.0.0
 */
export class NavigationManager {
  private static _instance: NavigationManager;

  // NavigationPanel相关属性
  private navigationPanel: any = null; // NavigationPanel实例引用
  private currentActivePanelType: PanelType = PanelType.THEME;
  private currentActivePanel: Node;
  private panelCache: Map<PanelType, Node> = new Map(); // 面板缓存
  private currentVisiblePanel: Node = null;

  // 选中的角色相关信息
  private selectedGirlId: number = 10002; // 当前选中的角色ID
  private selectedCategoryId: number = -1; // 当前选中的主题ID

  private themePanel: ThemePanel = null;
  private girlListPanel: GirlListPanel = null;

  private static LastSelectGirlID = "LastSelectGirlID";

  /**
   * 获取NavigationManager的单例实例
   *
   * @returns {NavigationManager} 导航管理器实例
   * @static
   */
  public static get Instance(): NavigationManager {
    if (!this._instance) {
      this._instance = new NavigationManager();

      //初始化默认选的girl
      let cacheGirlId = sys.localStorage.getItem(this.LastSelectGirlID);
      if (!cacheGirlId) {
        cacheGirlId = 10002;
        sys.localStorage.setItem(this.LastSelectGirlID, cacheGirlId);
      }
      this._instance.selectedGirlId = Number(cacheGirlId);

      let cacheCategoryId = sys.localStorage.getItem("LastSelectCategoryId");
      if (!cacheCategoryId) {
        cacheCategoryId = 0;
        sys.localStorage.setItem("LastSelectCategoryId", cacheCategoryId);
      }
      this._instance.selectedCategoryId = cacheCategoryId;
    }
    return this._instance;
  }

  private constructor() {
    // 初始化事件监听
    this.initEventListeners();
  }

  /**
   * 初始化事件监听
   */
  private initEventListeners(): void {
    //
  }

  /**
   * 注册NavigationPanel实例
   * @param panel NavigationPanel实例
   */
  public registerNavigationPanel(panel: any): void {
    this.navigationPanel = panel;
    console.log("[NavigationManager] NavigationPanel registered");
  }

  /**
   * 统一的面板切换方法
   * @param panelType 目标面板类型
   */
  public switchToPanel(panelType: PanelType, force: boolean = false): void {
    if (this.currentActivePanelType === panelType && !force) {
      if (panelType === PanelType.THEME) {
        this.girlListPanel.hide();
      }

      return;
    }

    if (!this.navigationPanel) {
      console.warn(
        "[NavigationManager] NavigationPanel not registered, fallback to direct ViewManager call"
      );
      this.fallbackSwitchPanel(panelType);
      return;
    }

    // 通知NavigationPanel显示加载状态
    this.navigationPanel.showLoading?.();

    // 计算动画方向
    const currentIndex = this.getPanelIndex(this.currentActivePanelType);
    const targetIndex = this.getPanelIndex(panelType);
    const isMovingRight = currentIndex < targetIndex;

    const hideDirection = isMovingRight ? "left" : "right";
    const showDirection = isMovingRight ? "right" : "left";

    // 隐藏当前面板（包括子页面）
    this.hideCurrentPanelWithChildren(hideDirection);

    // 加载并显示目标面板
    this.loadOrGetPanel(panelType, (panel: Node) => {
      this.currentActivePanelType = panelType;
      this.currentVisiblePanel = panel;

      if (this.subPanelDic.has(this.currentActivePanel)) {
        //如果有子页面，关闭掉
        let subs = this.subPanelDic.get(this.currentActivePanel);
        subs.forEach((n) => {
          n.getComponent(li_BaseView).close();
        });
        this.subPanelDic.delete(this.currentActivePanel);
      }
      // 更新NavigationPanel按钮状态
      this.navigationPanel.updateButtonStates?.(panelType);

      // 显示面板
      this.showPanelWithAnimation(panel, showDirection, () => {
        this.currentActivePanel = panel;
        this.navigationPanel.hideLoading?.();
      });
    });
  }

  private subPanelDic: Map<Node, Node[]> = new Map();
  public openSubPanel(panelName: string, basePanel: Node, data: any = null) {
    const callback = (n: Node) => {
      if (!this.subPanelDic.has(basePanel)) {
        this.subPanelDic.set(basePanel, []);
      }
      this.subPanelDic.get(basePanel).push(n);
    };

    ViewManager.I.openBundlesView(panelName, data, callback);
  }

  /**
   * 获取面板索引（用于动画方向计算）
   */
  private getPanelIndex(panelType: PanelType): number {
    switch (panelType) {
      case PanelType.THEME:
        return 0;
      case PanelType.GIRL_DETAIL:
        return 1;
      case PanelType.CHAT:
        return 2;
      case PanelType.PERSONAL:
        return 3;
      default:
        return 0;
    }
  }

  /**
   * 获取面板名称
   */
  private getPanelName(panelType: PanelType): string {
    return panelType as string;
  }

  /**
   * 获取面板数据
   */
  private getPanelData(panelType: PanelType): any {
    switch (panelType) {
      case PanelType.GIRL_DETAIL:
        return this.selectedGirlId; // 使用当前选中的角色ID
      case PanelType.CHAT:
        return { girlId: this.selectedGirlId }; // 使用当前选中的角色ID
      default:
        return null;
    }
  }

  /**
   * 加载或获取面板
   */
  private loadOrGetPanel(
    panelType: PanelType,
    callback: (panel: Node) => void
  ) {
    // 检查缓存
    if (this.panelCache.has(panelType)) {
      const cachedPanel = this.panelCache.get(panelType);
      if (cachedPanel && cachedPanel.isValid) {
        // 特殊处理：主题面板刷新（避免重复调用Show）
        if (panelType === PanelType.THEME) {
          const themePanel = cachedPanel.getComponent(ThemePanel);
          if (themePanel) {
            // 不在这里调用Show()，因为ThemePanel已经有加载状态保护
            // 只在必要时调用onHide()确保子页面状态正确
            if (typeof themePanel.onHide === "function") {
              console.log("[NavigationManager] 确保主题面板子页面状态正确");
              themePanel.onHide();
            }
          }
        }
        callback(cachedPanel);
        return;
      } else {
        this.panelCache.delete(panelType);
      }
    }

    // 加载新面板
    const panelName = this.getPanelName(panelType);
    const openData = this.getPanelData(panelType);

    ViewManager.I.openBundlesView(panelName, openData, (panel: Node) => {
      if (panel && panel.isValid) {
        this.panelCache.set(panelType, panel);

        if (panelName === "ThemePanel") {
          this.themePanel = panel.getComponent(ThemePanel);
        }

        callback(panel);
      }
    });
  }

  /**
   * 隐藏当前面板及其子页面
   */
  private hideCurrentPanelWithChildren(direction: "left" | "right") {
    if (!this.currentVisiblePanel) {
      return;
    }

    // 如果当前是ThemePanel，需要同时处理可能的子页面（GirlListPanel）
    if (this.currentActivePanelType === PanelType.THEME) {
      // 查找并隐藏GirlListPanel子页面
      this.hideThemePanelChildren(direction);

      // 隐藏ThemePanel主面板
      this.hidePanelWithAnimation(this.currentVisiblePanel, direction);
    } else {
      // 其他面板直接隐藏
      this.hidePanelWithAnimation(this.currentVisiblePanel, direction);
    }
  }

  /**
   * 隐藏ThemePanel的子页面
   */
  private hideThemePanelChildren(direction: "left" | "right") {
    const themePanel = this.findThemePanelNode();
    if (themePanel) {
      // 获取子页面节点
      const childPanel = this.getThemePanelChildNode(themePanel);
      if (childPanel && childPanel.active) {
        console.log(
          "[NavigationManager] Hiding ThemePanel child with animation"
        );
        this.hidePanelWithAnimation(childPanel, direction);
      }
    }
  }

  /**
   * 获取ThemePanel的子页面节点
   */
  private getThemePanelChildNode(themePanel: ThemePanel): Node | null {
    try {
      // ThemePanel存储子页面在currentChildPanel属性中
      const childPanel = themePanel.getChildPanel();
      if (childPanel) return childPanel.node;
      return null;
    } catch (error) {
      console.error(
        "[NavigationManager] Error getting child panel node:",
        error
      );
      return null;
    }
  }

  /**
   * 隐藏面板动画
   */
  private hidePanelWithAnimation(
    panel: Node,
    direction: "left" | "right",
    callback?: Function
  ) {
    if (!panel || !panel.isValid || !panel.active) {
      callback && callback();
      return;
    }

    if (direction === "left") {
      UITransitionHelper.slideOutToLeft(panel, 0.3, () => {
        panel.active = false;
        callback && callback();
      });
    } else {
      UITransitionHelper.slideOutToRight(panel, 0.3, () => {
        panel.active = false;
        callback && callback();
      });
    }
  }

  /**
   * 显示面板动画
   */
  private showPanelWithAnimation(
    panel: Node,
    direction: "left" | "right",
    callback?: Function
  ) {
    if (!panel || !panel.isValid) {
      callback && callback();
      return;
    }

    panel.active = true;

    if (panel.name === "ThemePanel" && this.girlListPanel) {
      this.showPanelWithAnimation(this.girlListPanel.node, direction, callback);
    }

    if (direction === "right") {
      UITransitionHelper.slideInFromRight(panel, 0.3, () => {
        callback && callback();
      });
    } else {
      UITransitionHelper.slideInFromLeft(panel, 0.3, () => {
        callback && callback();
      });
    }
  }

  /**
   * 后备切换方法（当NavigationPanel未注册时）
   */
  private fallbackSwitchPanel(panelType: PanelType): void {
    const panelName = this.getPanelName(panelType);
    const openData = this.getPanelData(panelType);
    ViewManager.I.openBundlesView(panelName, openData);
  }

  /**
   * 获取当前激活的面板类型
   */
  public getCurrentActivePanel(): PanelType {
    return this.currentActivePanelType;
  }

  /**
   * 设置选中的角色ID
   * @param girlId 角色ID
   */
  public setSelectedGirlId(girlId: number): void {
    this.selectedGirlId = girlId;
    sys.localStorage.setItem(NavigationManager.LastSelectGirlID, girlId);
    console.log("[NavigationManager] Selected girl ID set to:", girlId);
  }

  /**
   * 获取当前选中的角色ID
   * @returns 当前选中的角色ID
   */
  public getSelectedGirlId(): number {
    return this.selectedGirlId;
  }

  /**
   * 设置选中的主题ID
   * @param themeId 主题ID
   */
  public setSelectedCategoryId(themeId: number): void {
    this.selectedCategoryId = themeId;
    console.log("[NavigationManager] Selected theme ID set to:", themeId);
  }

  /**
   * 获取当前选中的主题ID
   * @returns 当前选中的主题ID
   */
  public getSelectedCategoryId(): number {
    return this.selectedCategoryId;
  }

  /**
   * 进入角色列表页面（作为 ThemePanel 的子页面）
   *
   * @param {number} themeId - 主题ID，用于筛选角色
   *
   * @example
   * ```typescript
   * NavigationManager.Instance.navigateToGirlList(1);
   * ```
   */
  public navigateToGirlList(themeId: number): void {
    if (themeId == null || themeId < 0) {
      console.warn("Invalid theme ID for girl list navigation:", themeId);
      return;
    }

    // 更新选中的主题ID
    this.setSelectedCategoryId(themeId);

    console.log(
      `[NavigationManager] Navigating to girl list with theme ID: ${themeId}`
    );

    // 先检查是否已有GirlListPanel存在
    const existingGirlListPanel = this.findExistingGirlListPanel();

    if (existingGirlListPanel) {
      // 如果面板已存在，重新显示并刷新数据
      console.log("[NavigationManager] Reactivating existing GirlListPanel");
      this.reactivateGirlListPanel(existingGirlListPanel);
    } else {
      // 如果面板不存在，创建新的
      console.log("[NavigationManager] Creating new GirlListPanel");
      ViewManager.I.openBundlesView(
        "GirlListPanel",
        {
          themeId: themeId,
          parentPanel: "ThemePanel", // 标记父页面
        },
        (girlListPanelNode) => {
          this.girlListPanel = girlListPanelNode.getComponent(GirlListPanel);
          // 获取 ThemePanel 实例并设置子页面关系
          console.log(
            "[NavigationManager] GirlListPanel opened, setting up parent-child relationship"
          );
          this.setupParentChildRelationship(girlListPanelNode);
        }
      );
    }
  }

  /**
   * 查找已存在的GirlListPanel
   */
  private findExistingGirlListPanel(): GirlListPanel {
    if (this.girlListPanel) return this.girlListPanel;
    else return null;
  }

  /**
   * 重新激活已存在的GirlListPanel
   */
  private reactivateGirlListPanel(panel: GirlListPanel): void {
    try {
      // 重新激活面板
      panel.node.active = true;

      // 获取面板组件并刷新数据
      //const girlListComponent = panelNode.getComponent("GirlListPanel");
      if (panel) {
        // 如果有刷新方法，调用它来更新主题数据
        panel.refresh();
        console.log(
          "[NavigationManager] GirlListPanel reactivated with theme:",
          this.selectedCategoryId
        );
      }

      // 重新建立父子关系
      this.setupParentChildRelationship(panel);
    } catch (error) {
      console.error(
        "[NavigationManager] Error reactivating GirlListPanel:",
        error
      );
    }
  }

  /**
   * 建立父子页面关系的私有方法
   * @private
   * @param girlListPanelNode GirlListPanel 节点
   */
  private setupParentChildRelationship(girlListPanelNode: any): void {
    try {
      // 查找 ThemePanel 实例
      const themePanel = this.findThemePanelNode();
      if (themePanel) {
        const girlListPanelComponent =
          girlListPanelNode.getComponent(GirlListPanel);

        if (themePanel && girlListPanelComponent) {
          console.log(
            "[NavigationManager] Setting up parent-child relationship"
          );
          this.themePanel.setChildPanel(girlListPanelComponent);
        } else {
          console.warn("[NavigationManager] Failed to get panel components");
        }
      } else {
        console.warn("[NavigationManager] ThemePanel not found");
      }
    } catch (error) {
      console.error(
        "[NavigationManager] Error setting up parent-child relationship:",
        error
      );
    }
  }

  /**
   * 查找 ThemePanel 节点的私有方法
   * @private
   * @returns ThemePanel 节点或 null
   */
  private findThemePanelNode(): ThemePanel {
    if (this.themePanel) return this.themePanel;
    return null;
  }

  /**
   * 处理导航时 ThemePanel 子页面的隐藏逻辑
   * @private
   */
  private handleThemePanelChildPanelsOnNavigation(): void {
    console.log(
      "[NavigationManager] Handling ThemePanel child panels on navigation"
    );

    const themePanelNode = this.findThemePanelNode();
    if (themePanelNode) {
      if (themePanelNode && themePanelNode.hideChildPanel) {
        console.log("[NavigationManager] Closing ThemePanel child panels");
        themePanelNode.hideChildPanel();
      }
    }
  }
}