import { _decorator, Component, Constructor, find, Node, Prefab, instantiate, EventHandler } from "cc";
import { ResourcesUtils } from "../../resourceManager/ResourcesUtils";
import { Log } from "../../utils/Log";
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 {
    public createBySystem: boolean = false;
    public windowList: Window[] = [];
    start() {
        if (!this.createBySystem) {
            Log.warn("WindowSystem组件由底层创建，无需编辑器创建");
        }
    }
    public onWindowOpen(_window: Window) {
        this.windowList.push(_window);
    }
    public onWindowClose(_window: Window) {
        Utils.removeArrayItem(this.windowList, _window);
    }
    /**
     * 最近打开的窗口
     */
    public get currentWindow(): Window {
        return this.windowList[this.windowList.length - 1];
    }
    public destroyWindow(_window: Window) {
        _window.openWindowOnClosing && _window.openWindowOnClosing.emit([_window]);
        if (_window.onClosing) {
            _window.onClosing.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 = null, onClosing: EventHandler = null) {
        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 = null, onClosing: EventHandler = null) {
        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("Canvas");
        _window.setParams(params);
        _window.prefabPath = prefabPath;
        onClosing && (_window.openWindowOnClosing = onClosing);
        onOpening && onOpening.emit([_window]);
        this.isLoadding = false;
        return _window;
    }
    public async showTips(message: string, prefabPath: string = "Prefabs/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);
        }
    }
}
export type ui_window<T = Window> = Constructor<T>;