import { _decorator, Component, Node, SystemEventType, EventTouch, find, UITransform, Vec2 } from 'cc';
import { WindowManager } from '../core/ui/window/WindowManager';
import { GeometryUtils } from '../core/utils/GeometryUtils';
import { FarmIcon, FarmState } from './FarmIcon';
import { FarmManager } from './FarmManager';
import { TouchHelper } from './TouchHelper';
const { ccclass, property } = _decorator;

@ccclass('FarmSystem')
export class FarmSystem extends Component {
    public farms: Array<FarmIcon> = [];
    private _currSelectFarm: FarmIcon;
    public set currSelectFarm(farm: FarmIcon) {
        if (this._currSelectFarm) {
            this._currSelectFarm.selectFarm(false);
        }
        this._currSelectFarm = farm;
        if (this._currSelectFarm) {
            let icon = this._currSelectFarm;
            icon.selectFarm(true);
        }
    }
    public get currSelectFarm(): FarmIcon {
        return this._currSelectFarm;
    }
    private canvas: Node;
    start() {
        this.canvas = find("Canvas");
        this.canvas.on(SystemEventType.TOUCH_MOVE, this.onTouchMove, this);
        this.canvas.on(SystemEventType.TOUCH_CANCEL, this.onTouchCancel, this);
        this.canvas.on(SystemEventType.TOUCH_END, this.onTouchEnd, this);
    }
    private isMoved = false;
    private onTouchEnd(e: EventTouch) {
        if (!FarmManager.plantWindowIsOpening) {
            let isInPoly = false;
            this.hideAllSelectProgressGroup();
            for (let i = 0; i < this.farms.length; i++) {
                const frame = this.farms[i];
                const touchHelper = frame.getComponent(TouchHelper);
                if (!this.isMoved && touchHelper.points.length >= 3) {
                    this.isMoved = false;
                    let touchPoint = e.getUILocation();
                    let localPoint = frame.node.getComponent(UITransform).convertToNodeSpaceAR(GeometryUtils.V2ToV3(touchPoint));
                    isInPoly = GeometryUtils.pointInPoly(localPoint, touchHelper.points);
                    if (isInPoly) {//农场被点击
                        frame.onTouch.call(frame);
                        if (frame.state == FarmState.Empty) {
                            this.currSelectFarm = frame;
                        } else {
                            this.closeWindow();
                        }
                        return;
                    }
                }
            }
            if (!isInPoly && this.currSelectFarm) {
                this.closeWindow();
            }
            this.isMoved = false;
        }
    }
    private onTouchMove(e: EventTouch) {
        // this.closeWindow();
        if (e.getAllTouches().length > 1) { this.isMoved = true; return }
        this.isMoved = Vec2.distance(e.getStartLocation(), e.getLocation()) > 20;
    }
    private closeWindow() {
        WindowManager.close();
        this.currSelectFarm = null;
    }
    private onTouchCancel(e: EventTouch) {
        this.isMoved = false;
    }
    public addFram(fram: FarmIcon) {
        this.farms[fram.sortID] = fram;
    }
    public plant(id: number): void {
        this.currSelectFarm && this.currSelectFarm.plant(id);
    }
    public selectNextFarm(): FarmIcon | null {
        let nextFarm = this.getCanPlantFarm();
        if (nextFarm) {
            this.currSelectFarm = nextFarm;
        } else {
            WindowManager.close();
        }
        return nextFarm;
    }

    public hideAllSelectProgressGroup(): void {
        for (let i = 0; i < this.farms.length; i++) {
            this.farms[i].countDown.setCountActive(false);
        }
    }
    /**获取可种植农田 */
    private getCanPlantFarm(): FarmIcon | null {
        for (let i = 0; i < this.farms.length; i++) {
            if (this.farms[i] != this.currSelectFarm && this.farms[i].state == FarmState.Empty) {
                return this.farms[i];
            }
        }
        return null;
    }
    /**触摸事件的同级传递 */
    public next(node: FarmIcon, e: EventTouch): void {
        let index = this.farms.indexOf(node);
        if (index % 3 < 2) {
            this.farms[index + 1].node.emit(SystemEventType.TOUCH_END, e);
        }
    }
    onDestroy() {
        this.canvas.off(SystemEventType.TOUCH_MOVE, this.onTouchMove, this);
        this.canvas.off(SystemEventType.TOUCH_CANCEL, this.onTouchCancel, this);
        this.canvas.off(SystemEventType.TOUCH_END, this.onTouchEnd, this);
    }

    public novice_plant(): void {
        let frame = this.farms[0];
        frame.novice_plant();
    }

    public novice_clean(): void {
        let frame = this.farms[0];
        frame.novice_clean();
    }
}