import { _decorator, Component, Constructor, find, Node, Prefab, instantiate, EventHandler, game } from "cc";
import { ResourcesUtils } from "../../resourceManager/ResourcesUtils";
import { Utils } from "../../utils/Utils";
import { Tips } from "./Tips";
import { Window } from "./Window";
import { WindowOpenMode } from "./WindowOpenMode";
const { ccclass, property } = _decorator;
/**
 * 窗口系统，负责管理窗口，底层运行时自动创建，无需在编辑器中绑定
 * @author 袁浩
 */
@ccclass('WindowSystem')
export class WindowSystem extends Component {
    @property({ tooltip: "Canvas节点名称" })
    public canvasName = "Canvas";
    public windowList: Window[] = [];
    private static thisObject: WindowSystem;
    start() {
        game.addPersistRootNode(this.node);//常驻节点
        WindowSystem.thisObject = this;
    }
    public onWindowOpen(_window: Window) {
        this.windowList.push(_window);
    }
    public onWindowClose(_window: Window) {
        Utils.removeArrayItem(this.windowList, _window);
    }
    public static onWindowOpen(_window: Window) {
        this.thisObject.onWindowOpen(_window);
    }
    /**
     * 最近打开的窗口
     */
    public get currentWindow(): Window {
        return this.windowList[this.windowList.length - 1];
    }
    public destroyWindow(_window: Window) {
        for (let i = 0; i < _window.openWindowOnClosing.length; i++) {
            _window.openWindowOnClosing[i].emit([_window]);
        }
        if (_window.onClosing.length) {
            for (let i = 0; i < _window.onClosing.length; i++) {
                _window.onClosing[i].emit([() => {
                    _window.node.destroy();
                    Utils.removeArrayItem(this.windowList, _window);
                }]);
            }
        }
        else {
            _window.node.destroy();
            Utils.removeArrayItem(this.windowList, _window);
        }
    }
    private isLoadding: boolean = false;
    /**
     * 打开窗口
     * @param prefabPath 预制体路径
     * @param openMode 窗口打开模式
     * @param params 给窗口传递的参数
     * @returns 
     */
    public async open(prefabPath: string, openMode: WindowOpenMode, params: any[], onOpening: EventHandler[] = [], onClosing: EventHandler[] = []) {
        var _window: Window;
        switch (openMode) {
            case WindowOpenMode.NotCloseAndAdd:
                _window = await this.doOpen(prefabPath, params, onOpening, onClosing);
                break;
            case WindowOpenMode.NotCloseAndCover:
                if (this.currentWindow && prefabPath == this.currentWindow.prefabPath) {
                    this.currentWindow.setParams(params);
                    _window = this.currentWindow;
                }
                else {
                    _window = await this.doOpen(prefabPath, params, onOpening, onClosing);
                }
                break;
            case WindowOpenMode.CloseAndAdd:
                this.close();
                _window = await this.doOpen(prefabPath, params, onOpening, onClosing);
                break;
            case WindowOpenMode.CloseAndCover:
                if (this.currentWindow && prefabPath == this.currentWindow.prefabPath) {
                    this.currentWindow.setParams(params);
                    _window = this.currentWindow;
                }
                else {
                    this.close();
                    _window = await this.doOpen(prefabPath, params, onOpening, onClosing);
                }
                break;
            default:
                break;
        }
        return _window;

    }
    private async doOpen(prefabPath: string, params: any[], onOpening: EventHandler[] = [], onClosing: EventHandler[] = []) {
        if (this.isLoadding) {
            return null;
        }
        this.isLoadding = true;
        var prefab = await ResourcesUtils.load<Prefab>(prefabPath, null, this.node);
        var windowNode = instantiate(prefab);
        var _window = windowNode.getComponent(Window) || windowNode.addComponent(Window);
        _window.node.parent = find(this.canvasName);
        _window.setParams(params);
        _window.prefabPath = prefabPath;
        onClosing && (_window.openWindowOnClosing = onClosing);
        for (let i = 0; i < onOpening.length; i++) {
            onOpening[i].emit([_window]);
        }
        this.isLoadding = false;
        return _window;
    }
    public async showTips(message: string, prefabPath: string = "prefabs/ui/tips") {
        var _window = await this.open(prefabPath, WindowOpenMode.NotCloseAndAdd, [message]);
        if (_window) {
            _window.getComponent(Tips) || _window.addComponent(Tips);
        }
    }
    /**
     * 关闭窗口
     * @param type 指定窗口类型，如果不传则关闭最近打开的窗口
     */
    public close(type: ui_window | Window | Node = null): void {
        if (!this.currentWindow) {
            return;
        }
        if (type) {
            var windowList = this.windowList.concat();
            for (let i = 0; i < windowList.length; i++) {
                const _window = windowList[i];
                if (type instanceof Window) {
                    if (type == _window) {
                        this.destroyWindow(_window);
                    }
                }
                else if (type instanceof Node) {
                    if (type == _window.node) {
                        this.destroyWindow(_window);
                    }
                }
                else if (_window instanceof type) {
                    this.destroyWindow(_window);
                }
            }
        }
        else {
            var _window = this.windowList[this.windowList.length - 1];
            this.destroyWindow(_window);
        }
    }
    /**
     * 关闭指定路径的窗口
     * @param path 路径，例：Canvas/XXWindow
     */
    public closeByPath(path: string): void {
        if (!this.currentWindow) {
            return;
        }
        var _windowNode = find(path);
        _windowNode && this.destroyWindow(_windowNode.getComponent(Window));
    }
    /**
     * 关闭所有窗口
     */
    public closeAll() {
        while (this.windowList.length) {
            var _window = this.windowList.shift();
            this.destroyWindow(_window);
        }
    }
    /**
     * 最近打开的窗口
     */
    public static get currentWindow(): Window {
        return this.thisObject.currentWindow;
    }
    /**
     * 打开窗口
     * @param prefabPath 预制体路径
     * @param openMode 窗口打开模式
     * @param params 给窗口传递的参数
     * @returns 
     */
    public static async open(prefabPath: string, openMode: WindowOpenMode, params: any[] = [], onOpening: EventHandler[] = [], onClosing: EventHandler[] = []) {
        return this.thisObject.open(prefabPath, openMode, params, onOpening, onClosing);
    }
    /**
     * 关闭窗口
     * @param type 指定窗口类型，如果不传则关闭最近打开的窗口
     */
    public static close(type: ui_window | Window | Node = null): void {
        this.thisObject.close(type);
    }
    /**
     * 关闭指定路径的窗口
     * @param path 路径，例：Canvas/XXWindow
     */
    public static closeByPath(path: string): void {
        this.thisObject.closeByPath(path);
    }
    /**
     * 关闭所有窗口
     */
    public static closeAll() {
        this.thisObject.closeAll();
    }
    /**
     * 显示小提示
     * @param message 
     */
    public static showTips(message: string, prefabPath: string = "prefabs/ui/tips") {
        this.thisObject.showTips(message, prefabPath);
    }

    public static getWindowList(): Window[] {
        return this.thisObject.windowList.concat();
    }
    public static onWindowClose(_window: Window) {
        this.thisObject.onWindowClose(_window);
    }
}
export type ui_window<T = Window> = Constructor<T>;