import { Node } from 'cc';
import { aiLog } from './AiLog';
import type { ProjectBattleHandle } from '../../runtime/BattleRuntime';
import type { MapManager } from '../../map/legacy/MapManager';
import { SkillController } from '../../skill/SkillController';
import { AiHeadlessBagHost } from './AiHeadlessBagHost';
import type { TextGrid } from '../../view/TextGrid';

/**
 * AI 技能表现宿主：独立 SkillController，承接 AI 塔 PresentationCue。
 * 缺绑则 PlayPresentation 上锁后无人 finish，AI 塔永不攻击。
 */
export class AiSkillHost {
    private _hostNode: Node | null = null;
    private _controller: SkillController | null = null;

    /**
     * 绑定 AI 玩家的 SkillController。
     * @param battle 战斗
     * @param map 地图
     * @param parent UI 节点（挂载组件）
     * @param mapGrids AI 地图 TextGrid
     */
    bind(battle: ProjectBattleHandle, map: MapManager, parent: Node, mapGrids?: ReadonlyMap<number, TextGrid>): boolean {
        this.dispose();
        const aiPlayer = battle.getPlayer(AiHeadlessBagHost.AI_PLAYER_ID);
        if (!aiPlayer) {
            aiLog('[AiSkillHost] bind failed: AI player missing');
            return false;
        }
        if (!parent?.isValid) {
            aiLog('[AiSkillHost] bind failed: parent invalid');
            return false;
        }
        let host = parent.getChildByName('aiSkillHost');
        if (!host?.isValid) {
            host = new Node('aiSkillHost');
            parent.addChild(host);
        }
        let sc = host.getComponent(SkillController);
        if (!sc) sc = host.addComponent(SkillController);
        sc.bind(aiPlayer, battle);
        sc.refreshEntitySkillBindings(map, mapGrids);
        aiPlayer.skillController = sc;
        this._hostNode = host;
        this._controller = sc;
        aiLog('[AiSkillHost] bound AI SkillController');
        return true;
    }

    /**
     * 部署变化后刷新 entity→Skill 映射。
     * @param map 地图
     * @param mapGrids AI 地图 TextGrid
     */
    refresh(map: MapManager, mapGrids?: ReadonlyMap<number, TextGrid>): void {
        this._controller?.refreshEntitySkillBindings(map, mapGrids);
    }

    /** 解除绑定 */
    dispose(): void {
        if (this._controller) {
            this._controller.unbind();
            this._controller = null;
        }
        if (this._hostNode?.isValid) {
            this._hostNode.destroy();
        }
        this._hostNode = null;
    }
}