/*
 * @Author: mojunshou 1637302775@qq.com
 * @Date: 2025-04-20 10:00:00
 * @LastEditors: mojunshou 1637302775@qq.com
 * @LastEditTime: 2025-04-20 10:00:00
 * @Description: 消除游戏方块管理器
 */
import { EventTouch, JsonAsset, Node, Prefab, UITransform, Vec2, Vec3, tween, instantiate } from "cc";
import { oops } from "db://oops-framework/core/Oops";
import { BrickData, GridConfigData, GridData } from "./EliminateTypes";

export class EliminateBrickManager {
    private brickNode: Node | null = null; // 方块容器
    private rotateNode: Node | null = null; // 旋转容器
    private rotatePrefab: Node | null = null; // 旋转预制体
    private moveNode: Node | null = null; // 移动容器
    private itemSize: number = 76.25; // 格子大小
    private itemPrefabs: Prefab[] = []; // 方块预制体列表
    private rotateFaultTolerant = 10; // 旋转容错
    private yOffset = 100; // Y轴偏移
    private aniBrickRotate = 0; // 旋转动画时间

    private bricksList: BrickData[] = []; // 所有可用方块
    private brickConfig: { bricks?: any } = {}; // 方块配置

    constructor(
        brickNode: Node,
        rotateNode: Node,
        moveNode: Node,
        itemPrefabs: Prefab[],
        rotatePrefab: Node,
        itemSize: number
    ) {
        this.brickNode = brickNode;
        this.rotateNode = rotateNode;
        this.moveNode = moveNode;
        this.itemPrefabs = itemPrefabs;
        this.rotatePrefab = rotatePrefab;
        this.itemSize = itemSize;
    }

    /**
     * 加载方块配置文件
     */
    public async loadConfig(): Promise<void> {
        let json_name: string = "gui/eliminate/config/GridConfig";
        return new Promise<void>((resolve, reject) => {
            oops.res.load(json_name, JsonAsset, (err: Error | null, res: any) => {
                if (res) {
                    this.brickConfig = res.json;
                    resolve();
                } else {
                    console.log("JSON数据加载失败，请检查文件");
                    reject(err);
                }
            });
        });
    }

    /**
     * 初始化方块列表
     */
    public initBricks(count: number): void {
        if (this.brickNode) {
            this.brickNode.destroyAllChildren();
        }

        this.bricksList.length = 0;

        for (let i = 1; i <= count; i++) {
            this.addBrick(i);
        }
    }

    /**
     * 添加一个砖块
     */
    public addBrick(index: number, isGuideMode: boolean = false): BrickData {
        // 随机选择砖块类型
        const brickConfigs = Object.keys(this.brickConfig['bricks']);
        let brickKey;

        if (isGuideMode) {
            brickKey = "Brick1";
        } else {
            const randomIndex = Math.floor(Math.random() * brickConfigs.length);
            brickKey = brickConfigs[randomIndex];
        }

        // 随机选择颜色
        const randomColorIndex = Math.floor(Math.random() * 3) + 1;

        // 创建砖块
        const brickNode = this.generateBrick(brickKey, randomColorIndex);
        if (!brickNode || !this.brickNode) {
            throw new Error("无法生成砖块");
        }

        this.brickNode.addChild(brickNode);

        // 设置砖块位置
        const brickConfig = this.brickConfig['bricks'][brickKey];
        const rotateFlag = brickConfig.rotateFlag || false;

        // 创建砖块数据对象
        const brickData: BrickData = {
            index: index,
            brickKey: brickKey,
            rotateFlag: rotateFlag,
            gridConfig: JSON.parse(JSON.stringify(brickConfig.gridConfig)),
            deg: 0,
            brickNode: brickNode,
            brickInitPos: new Vec3(this.calculateInitPosition(index)),
            type: randomColorIndex,
            rotateNode: null
        };

        // 设置初始位置
        brickNode.setWorldPosition(brickData.brickInitPos);
        brickNode.scale.set(0.8, 0.8, 0.8);

        // 创建旋转节点
        if (rotateFlag) {
            this.createRotateNode(brickData);
        }

        // 添加到方块列表
        this.bricksList.push(brickData);

        return brickData;
    }

    /**
     * 生成方块节点
     */
    public generateBrick(brickKey: string, colorIndex: number): Node {
        const brickConfig = this.brickConfig['bricks'][brickKey];
        let rowMin = 0;
        let rowMax = 0;
        let columnMin = 0;
        let columnMax = 0;

        // 计算方块尺寸
        brickConfig['gridConfig'].forEach((gridConfigData: GridConfigData) => {
            if (gridConfigData.row < rowMin) {
                rowMin = gridConfigData.row;
            }
            else if (gridConfigData.row > rowMax) {
                rowMax = gridConfigData.row;
            }
            if (gridConfigData.column < columnMin) {
                columnMin = gridConfigData.column;
            }
            else if (gridConfigData.column > columnMax) {
                columnMax = gridConfigData.column;
            }
        });

        const rowNum = (rowMax - rowMin + 1);
        const columnNum = (columnMax - columnMin + 1);

        // 创建方块节点
        const brickNode = new Node();
        brickNode.name = brickKey;

        // 设置方块大小
        const transformCom: UITransform = brickNode.addComponent(UITransform);
        transformCom.setContentSize(
            this.itemSize * columnNum,
            this.itemSize * rowNum
        );
        transformCom.setAnchorPoint(0.5, 0.5);

        // 创建子格子
        const gridPrefab = this.itemPrefabs[colorIndex];

        brickConfig['gridConfig'].forEach((gridConfigData: GridConfigData) => {
            const gridNode = new Node();
            gridNode.name = 'grid';
            brickNode.addChild(gridNode);

            // 设置子格子大小
            gridNode.addComponent(UITransform).setContentSize(this.itemSize, this.itemSize);

            // 设置子格子位置
            const x = this.itemSize * gridConfigData.column - this.itemSize * columnMin;
            const y = this.itemSize * gridConfigData.row - this.itemSize * rowMin;
            gridNode.setPosition(x, y);

            // 创建格子显示节点
            const node = instantiate(gridPrefab);
            gridNode.addChild(node);

            // 设置格子显示节点大小
            const uiTransform = node.getComponent(UITransform);
            if (uiTransform) {
                uiTransform.setContentSize(
                    this.itemSize,
                    this.itemSize,
                );
            }

            // 设置位置
            node.setPosition(Vec3.ZERO);

            // 确保事件冒泡
            node.on(Node.EventType.TOUCH_START, (event: EventTouch) => {
                event.preventSwallow = true;
            }, this);
            node.on(Node.EventType.TOUCH_MOVE, (event: EventTouch) => {
                event.preventSwallow = true;
            }, this);
            node.on(Node.EventType.TOUCH_END, (event: EventTouch) => {
                event.preventSwallow = true;
            }, this);
        });

        return brickNode;
    }

    /**
     * 创建引导砖块
     */
    public createGuideBrick(
        gridConfig: GridConfigData[],
        brickKey: string,
        colorIndex: number,
        index: number,
        rotateFlag = false
    ): BrickData {
        const brickData = {
            index,
            brickKey: brickKey,
            rotateFlag,
            gridConfig,
            deg: 0,
            brickNode: new Node(),
            gridColorKey: "colorKey",
            brickInitPos: new Vec3(),
            type: colorIndex,
            rotateNode: new Node(),
        };

        const node = this.generateBrick(brickKey, colorIndex);
        if (this.brickNode) {
            this.brickNode.addChild(node);
        }

        const transform = this.brickNode?.getComponent(UITransform);
        if (transform) {
            const midX = transform.width / 2;
            node.setPosition(0, 0);
            brickData.brickNode = node;
            brickData.brickInitPos = node.getWorldPosition();
            this.bricksList.push(brickData);
            this.brickAddEvent(brickData, () => { });
        }

        if (brickData.rotateFlag && this.rotatePrefab && this.rotateNode) {
            brickData.rotateNode = instantiate(this.rotatePrefab);
            this.rotateNode.addChild(brickData.rotateNode);
            //先隐藏
            brickData.rotateNode.active = false;
            brickData.rotateNode.setWorldPosition(this.brickNode!.getWorldPosition());
        }

        return brickData;
    }

    /**
     * 给砖块添加事件
     */
    public brickAddEvent(brickData: BrickData, onDragHandler: (brickData: BrickData, position: Vec3, startPos: Vec2, delta: Vec2) => void): void {
        const brickNode = brickData.brickNode;
        if (!brickNode) {
            console.error("brickNode为空，无法添加事件");
            return;
        }

        // 记录触摸开始位置
        let touchStartPos = new Vec2();

        // 触摸开始事件
        brickNode.on(Node.EventType.TOUCH_START, (event: EventTouch) => {
            // 记录触摸起始位置
            touchStartPos.set(event.getUILocation());
        }, this);

        // 触摸移动事件
        brickNode.on(Node.EventType.TOUCH_MOVE, (event: EventTouch) => {
            const currentPos = event.getUILocation();
            const delta = new Vec2(
                currentPos.x - touchStartPos.x,
                currentPos.y - touchStartPos.y
            );

            // 如果移动距离太小，忽略
            if (delta.length() <= this.rotateFaultTolerant) {
                return;
            }

            // 调用拖动处理回调
            onDragHandler(brickData, event.getUILocation().toVec3().add3f(0, this.yOffset, 0), touchStartPos, delta);
        }, this);
    }

    /**
     * 旋转方块
     */
    public brickGridRotate(brickData: BrickData): Promise<boolean> {
        return new Promise((resolve) => {
            const next = this.nextGridRotate(brickData.gridConfig, brickData.deg);
            brickData.deg = next.deg;
            brickData.gridConfig = next.gridConfig;

            if (brickData.brickNode) {
                tween(brickData.brickNode)
                    .to(this.aniBrickRotate, { angle: next.deg })
                    .call(() => {
                        resolve(true);
                    })
                    .start();
            } else {
                resolve(true);
            }
        });
    }

    /**
     * 计算下一个旋转状态
     */
    public nextGridRotate(gridConfig: GridConfigData[], deg: number): { gridConfig: GridConfigData[], deg: number } {
        const newGridConfig: GridConfigData[] = [];
        // 顺时针旋转
        let newDeg = deg - 90;

        gridConfig.forEach((gridConfigData) => {
            // 例如（1，2） => （-2，1），可以画图分析
            newGridConfig.push({
                row: -gridConfigData.column,
                column: gridConfigData.row
            });
        });

        return { gridConfig: newGridConfig, deg: newDeg };
    }

    /**
     * 获取所有方块
     */
    public getBricksList(): BrickData[] {
        return this.bricksList;
    }

    /**
     * 设置所有方块
     */
    public setBricksList(bricks: BrickData[]): void {
        this.bricksList = bricks;
    }

    /**
     * 移除方块
     */
    public removeBrick(brickData: BrickData): void {
        const index = this.bricksList.findIndex(item => item === brickData);
        if (index > -1) {
            this.bricksList.splice(index, 1);
        }
    }

    /**
     * 清理所有方块
     */
    public clearAllBricks(): void {
        if (this.brickNode) {
            this.brickNode.destroyAllChildren();
        }
        this.bricksList = [];
    }

    /**
     * 清理旋转节点
     */
    public clearAllRotateNodes(): void {
        if (this.rotateNode) {
            this.rotateNode.destroyAllChildren();
        }
    }

    /**
     * 给砖块添加拖动结束事件
     */
    public brickEndDrag(
        brickData: BrickData,
        onEndDragHandler: (brickData: BrickData, canPlace: boolean) => void
    ): void {
        const brickNode = brickData.brickNode;
        if (!brickNode) {
            console.error("brickNode为空，无法添加拖动结束事件");
            return;
        }

        // 添加触摸结束事件
        const touchEndHandler = (event: EventTouch) => {
            // 获取当前触摸位置
            const currentPos = event.getUILocation();
            // 调用处理函数
            onEndDragHandler(brickData, true);
        };

        brickNode.on(Node.EventType.TOUCH_END, touchEndHandler, this);
        brickNode.on(Node.EventType.TOUCH_CANCEL, touchEndHandler, this);
    }

    /**
     * 给砖块添加拖动开始事件
     */
    public brickStartDrag(
        brickData: BrickData,
        onStartDragHandler: (brickData: BrickData, startPos: Vec3) => void
    ): void {
        const brickNode = brickData.brickNode;
        if (!brickNode) {
            console.error("brickNode为空，无法添加拖动开始事件");
            return;
        }

        // 添加触摸开始事件
        brickNode.on(Node.EventType.TOUCH_START, (event: EventTouch) => {
            // 记录触摸起始位置
            const startPos = brickNode.getWorldPosition().clone();
            // 调用处理函数
            onStartDragHandler(brickData, startPos);
        }, this);
    }

    /**
     * 计算初始位置
     */
    private calculateInitPosition(index: number): Vec3 {
        // 计算位置
        let offset = 220;
        const brickNum = this.bricksList.length + 1; // +1 因为当前砖块还未添加到列表

        if (brickNum % 2 === 1) {
            const middleNum = Math.floor(brickNum / 2) + 1;
            if (index < middleNum) {
                offset = -offset;
            }
            else if (index === middleNum) {
                offset = 0;
            }
        } else {
            const middleNum = brickNum / 2;
            if (index <= middleNum) {
                offset = -offset;
            }
        }

        return new Vec3(offset, 0, 0);
    }

    /**
     * 创建旋转节点
     */
    private createRotateNode(brickData: BrickData): void {
        if (!this.rotatePrefab || !this.rotateNode || !brickData.brickNode) {
            return;
        }

        brickData.rotateNode = instantiate(this.rotatePrefab);
        this.rotateNode.addChild(brickData.rotateNode);

        // 先隐藏
        brickData.rotateNode.active = false;
        brickData.rotateNode.setWorldPosition(brickData.brickNode.getWorldPosition());
    }
}