import { Vec3 } from 'cc';
import { schedulePresentation } from '../../battle/skill/BattlePresentationClock';
import type { CocosBagBoardView } from '../../battle/view/CocosBagBoardView';
import { rollCarriedTreasureShovelPeachCount } from '../../manager/battleBuff/BattleBuffPassiveSkillUtil';
import type { BattlePeachCoinFlyPresenter } from './BattlePeachCoinFlyPresenter';

/** 逐枚出现间隔（逻辑秒；固定节奏，与枚数无关） */
const DIG_PEACH_INTERVAL_SEC = 0.15;

/**
 * 掘宝仙铲（functiontype=10）：铲挖开格后在格心逐枚弹出 coinFly（与击杀掉桃一致）并飞向 ui_money。
 */
export class BattleGameTreasureShovelPresenter {
    private _bagView: CocosBagBoardView | null = null;
    private _peachFly: BattlePeachCoinFlyPresenter | null = null;
    /** 并行倒计时世代（unbind 时递增以作废待触发回调） */
    private _scheduleGen = 0;

    /** 绑定背包视图与飘桃演出 */
    bind(bagView: CocosBagBoardView | null, peachFly: BattlePeachCoinFlyPresenter | null): void {
        this.unbind();
        this._bagView = bagView;
        this._peachFly = peachFly;
        bagView?.setShovelDigRewardHandler(this._onShovelDig.bind(this));
    }

    /** 注销并中断进行中的演出 */
    unbind(): void {
        this._scheduleGen++;
        this._bagView?.setShovelDigRewardHandler(null);
        this._bagView = null;
        this._peachFly = null;
    }

    /** 铲挖开 Dig 格：随机蟠桃数量并播放击杀同款 coinFly 掉桃 */
    private _onShovelDig(gridIndex: number): void {
        const bagView = this._bagView;
        const peachFly = this._peachFly;
        if (!bagView || !peachFly) return;

        const peachCount = rollCarriedTreasureShovelPeachCount();
        if (peachCount <= 0) return;

        const startWorld = bagView.getMapGridWorldPosition(gridIndex);
        if (!startWorld) {
            console.log('[TreasureShovel] 挖格坐标缺失', gridIndex);
            return;
        }

        this._playDigPeachSequence(startWorld, peachCount);
    }

    /** 格心逐枚弹出 coinFly；开格后立即首枚，之后按固定间隔依次蹦出 */
    private _playDigPeachSequence(startWorld: Readonly<Vec3>, peachCount: number): void {
        const bagView = this._bagView;
        const peachFly = this._peachFly;
        if (!bagView || !peachFly) return;

        const scheduleGen = ++this._scheduleGen;
        for (let i = 0; i < peachCount; i++) {
            const delay = i * DIG_PEACH_INTERVAL_SEC;
            schedulePresentation(delay, () => {
                if (scheduleGen !== this._scheduleGen) return;
                peachFly.playKillDrop(startWorld, 1);
                bagView.grantBattlePeach(1);
            });
        }
    }
}