import type { Node } from 'cc';
import { aiLog, aiOp, aiWarn } from '../runtime/AiLog';
import type { ProjectBattleHandle } from '../../runtime/BattleRuntime';
import type { MapManager } from '../../map/legacy/MapManager';
import type { AiMatchProfile } from '../match/AiMatchProfile';
import type { BattleBagSession } from '../../bag/BattleBagSession';
import type { DeploySync } from '../../runtime/DeploySync';
import { AiMatchService } from '../match/AiMatchService';
import {
    AiBattlePersonalityFactory,
    AiTextPolicyType,
} from '../runtime/AiBattlePersonality';
import { AiHeadlessBagHost } from '../runtime/AiHeadlessBagHost';
import { AiOpponentController } from '../runtime/AiOpponentController';
import { AiHeroWeaponRegistry } from '../runtime/AiHeroWeaponRegistry';
import { AiHeroWeaponAssigner } from '../runtime/AiHeroWeaponAssigner';
import { AiSkillHost } from '../runtime/AiSkillHost';
import { AiMapTextHost } from '../runtime/AiMapTextHost';
import { AiPassiveCdHost, type AiPassiveCdUiSlot } from '../runtime/AiPassiveCdHost';
import { AiActiveSkillHost, type AiActiveSkillUiSlot, type AiActiveSkillCastFxHandler } from '../runtime/AiActiveSkillHost';
import { AiAdHost } from '../runtime/AiAdHost';
import type { AiMatchBuildInput } from '../types/AiTypes';
import { setAiHeroWeaponResolver } from '../../combat/TowerLoadoutService';
import { SkillAtkBuffBoardViewBind } from '../../combat/SkillAtkBuffBoardBridge';
import { AiMatchPlayerBuffCounts } from '../match/AiMatchPlayerBuffCounts';
import { BattleBuffCarryStore } from '../../../manager/battleBuff/BattleBuffCarryStore';
import { getBattleBuffMoveSpeedHost } from '../../combat/BattleBuffMoveSpeedHost';
import { getBattleBuffUnitAttackSpeedHost } from '../../combat/BattleBuffUnitAttackSpeedHost';
import { getBattleBuffBaseThunderHost } from '../../combat/BattleBuffBaseThunderHost';
import { getBattleBuffDigitStatHost } from '../../combat/BattleBuffDigitStatHost';

/** AI 模块唯一对外集成层：匹配档案 -> 局内 tick */
export class AiBattleBridge {
    private static _instance: AiBattleBridge | null = null;

    private readonly _matchService = new AiMatchService();
    private readonly _personalityFactory = new AiBattlePersonalityFactory();
    private readonly _bagHost = new AiHeadlessBagHost();
    private readonly _controller = new AiOpponentController();
    private readonly _weaponRegistry = new AiHeroWeaponRegistry();
    private readonly _weaponAssigner = new AiHeroWeaponAssigner();
    private readonly _skillHost = new AiSkillHost();
    private readonly _mapText = new AiMapTextHost();
    private readonly _passiveCd = new AiPassiveCdHost();
    private readonly _activeSkill = new AiActiveSkillHost();
    private readonly _adHost = new AiAdHost();
    private _battle: ProjectBattleHandle | null = null;
    private _map: MapManager | null = null;
    private _profile: AiMatchProfile | null = null;

    /** 单例入口 */
    static get inst(): AiBattleBridge {
        if (!AiBattleBridge._instance) {
            AiBattleBridge._instance = new AiBattleBridge();
        }
        return AiBattleBridge._instance;
    }

    /** 匹配服务 */
    get matchService(): AiMatchService {
        return this._matchService;
    }

    /** 当前局匹配档案；未开战为 null */
    get profile(): AiMatchProfile | null {
        return this._profile;
    }

    /** AI 无头背包会话；未 bind 时为 null */
    get aiBagSession(): BattleBagSession | null {
        return this._bagHost.bagSession;
    }

    /** AI 部署同步；未 bind 时为 null */
    get aiDeploySync(): DeploySync | null {
        return this._bagHost.deploySync;
    }

    /**
     * 妙手神偷：摘除 AI 地图字块视图（不销毁）。
     * @param gridIndex 地图格索引
     */
    detachAiMapTextGrid(gridIndex: number): import('../../view/TextGrid').TextGrid | null {
        return this._mapText.detachGridForSteal(gridIndex);
    }

    /**
     * AI 妙手神偷落地：挂接飞行字块到 AI 地图格。
     * @param gridIndex 落点格
     * @param grid 飞行字块
     */
    attachAiStolenMapTextGrid(gridIndex: number, grid: import('../../view/TextGrid').TextGrid): void {
        this._mapText.attachStolenGrid(gridIndex, grid);
    }

    /**
     * 遍历 AI 地图托管字块。
     * @param visitor 回调
     */
    forEachAiMapTextGrid(visitor: (grid: import('../../view/TextGrid').TextGrid, gridIndex: number) => void): void {
        this._mapText.forEachGrid(visitor);
    }

    /**
     * 敌方地图字块点击回调（详情 / 攻击范围）。
     * @param handler 点击回调；null 清除
     */
    setAiMapTextClickHandler(handler: ((grid: import('../../view/TextGrid').TextGrid) => void) | null): void {
        this._mapText.setMapClickHandler(handler);
    }

    /**
     * 绑定 AI 字块跳飞层（与玩家 ui_fly 相同）。
     * @param layer 飞行层
     */
    setMapTextFlyLayer(layer: Node | null): void {
        this._mapText.setFlyLayer(layer);
    }

    /**
     * 绑定 AI 地图字专用层（与玩家 ui_textGrids 相同）。
     * @param layer 字块层
     */
    setTextGridLayer(layer: Node | null): void {
        this._mapText.setTextGridLayer(layer);
    }

    /** AI 盘面变更后刷新地图字与技能绑定 */
    notifyAiBoardChanged(): void {
        this._onBoardChanged();
    }

    /**
     * AI 主动技能 UI 快照（CD + 展示 buff）。
     * @returns 槽列表；未启动为空
     */
    snapshotActiveSkillUi(): AiActiveSkillUiSlot[] {
        return this._activeSkill.snapshotUiSlots();
    }

    /**
     * 注册 AI 主动施放表现（图标飞向受体）。
     * @param handler 回调；null 清除
     */
    setActiveSkillCastFxHandler(handler: AiActiveSkillCastFxHandler | null): void {
        this._activeSkill.setCastFxHandler(handler);
    }

    /**
     * 注册 AI 金矿飞币表现。
     * @param handler 回调；null 清除
     */
    setGoldMineCoinFlyHandler(handler: import('../runtime/AiPassiveCdHost').AiGoldMineCoinFlyHandler | null): void {
        this._passiveCd.setGoldMineCoinFlyHandler(handler);
    }

    /**
     * 注册 AI 妙手神偷神偷手表现。
     * @param handler 回调；null 清除
     */
    setStealGlyphFxHandler(handler: import('../runtime/AiActiveSkillHost').AiStealGlyphFxHandler | null): void {
        this._activeSkill.setStealFxHandler(handler);
    }

    /**
     * 注册 AI 幻魂镜表现。
     * @param handler 回调；null 清除
     */
    setConfuseHeroFxHandler(handler: import('../runtime/AiActiveSkillHost').AiConfuseHeroFxHandler | null): void {
        this._activeSkill.setConfuseFxHandler(handler);
    }

    /**
     * AI CD 被动 UI 快照。
     * @returns 槽列表；未启动为空
     */
    snapshotPassiveCdUi(): AiPassiveCdUiSlot[] {
        return this._passiveCd.snapshotUiSlots();
    }

    /**
     * 开战前构建匹配档案。
     * @param input 玩家 buff 数量等；缺省读 DailyShop 携带数
     */
    buildMatchProfile(input?: AiMatchBuildInput): AiMatchProfile | null {
        const counts = AiMatchPlayerBuffCounts.read('匹配读携带');
        const profile = this._matchService.buildProfile(input ?? {
            playerActiveBuffCount: counts.active,
            playerPassiveBuffCount: counts.passive,
        });
        this._profile = profile;
        return profile;
    }

    /**
     * 建波前预挂：局内三选一后赛前不再灌携带（保留空实现供旧调用兼容）。
     */
    prefetchCarryForWaveBuild(): void {
        // 局内解锁三选一获得 buff，不再赛前写入
    }

    /**
     * 匹配页已抽出的对手写入档案（开战重抽 buff 后保留展示对手）。
     * @param opponentRankId 对手段位
     * @param opponentStars 对手总星
     */
    applyPendingOpponent(opponentRankId: number, opponentStars: number): void {
        const p = this._profile;
        if (!p) return;
        const rankId = Math.floor(Number(opponentRankId) || 0);
        if (rankId <= 0) return;
        const stars = Math.max(0, Math.floor(Number(opponentStars) || 0));
        this._profile = {
            playerRankId: p.playerRankId,
            playerStars: p.playerStars,
            opponentRankId: rankId,
            opponentStars: stars,
            starOffset: p.starOffset,
            activeBuffCount: p.activeBuffCount,
            passiveBuffCount: p.passiveBuffCount,
            activeBuffIds: p.activeBuffIds,
            passiveBuffIds: p.passiveBuffIds,
            seed: p.seed,
        };
        aiOp(`锁定匹配页对手 rank=${rankId} stars=${stars}（AI buff 用开战重抽结果）`);
    }

    /** 是否已绑定战斗并在跑决策 */
    get running(): boolean {
        return !!this._battle && this._controller.running;
    }

    /**
     * 战斗就绪后启动 AI。
     * @param battle 战斗运行时句柄
     * @param map 地图
     * @param profile 本局档案；缺省使用已缓存 profile
     * @param skillParent 挂载 AI SkillController 的 UI 节点
     * @param bagLayout 玩家 ui_textList（AI 大地块槽位/邻格几何）
     */
    start(battle: ProjectBattleHandle, map: MapManager, profile?: AiMatchProfile, skillParent?: Node | null, bagLayout?: Node | null): boolean {
        try {
            return this._startInner(battle, map, profile, skillParent, bagLayout);
        } catch (e) {
            console.error('[AiBattleBridge] start 异常，对手 AI 未启动', String(e));
            return false;
        }
    }

    /**
     * start 主体（异常由 start 捕获）。
     * @param battle 战斗
     * @param map 地图
     * @param profile 档案
     * @param skillParent 技能父节点
     * @param bagLayout 背包布局
     */
    private _startInner(battle: ProjectBattleHandle, map: MapManager, profile?: AiMatchProfile, skillParent?: Node | null, bagLayout?: Node | null): boolean {
        let resolved = profile ?? this._profile;
        if (!resolved) {
            resolved = this.buildMatchProfile();
        }
        if (!resolved) {
            console.warn('[AiBattleBridge] profile missing，使用应急档案');
            resolved = this._emergencyProfile(battle);
            this._profile = resolved;
        }
        if (resolved.opponentRankId !== battle.opponentRankId) {
            console.warn(
                '[AiBattleBridge] profile.opponentRankId != battle.opponentRankId',
                resolved.opponentRankId,
                battle.opponentRankId,
            );
        }
        this._mountAiBuffs(resolved, battle);
        let personality = this._personalityFactory.roll(resolved.opponentRankId, resolved.seed);
        if (!personality) {
            console.warn('[AiBattleBridge] personality 失败，使用默认', resolved.opponentRankId);
            personality = {
                textPolicy: AiTextPolicyType.Type1,
            };
        }
        if (!this._bagHost.bind(resolved, battle, map, bagLayout ?? null)) {
            console.error('[AiBattleBridge] start aborted: headless bag bind failed');
            return false;
        }
        this._weaponRegistry.clear();
        this._battle = battle;
        this._map = map;
        this._profile = resolved;
        this._mapText.setAfterFlush(this._refreshAiSkills);
        if (skillParent) {
            this._skillHost.bind(battle, map, skillParent, this._mapText.getMapGrids());
        } else {
            console.warn('[AiBattleBridge] skillParent missing: AI towers may not attack');
        }
        this._controller.start(
            resolved,
            personality,
            this._bagHost,
            battle,
            map,
            this._onBoardChanged,
            this._tryRecycleSurplusBag,
            this._mapText,
        );
        this._passiveCd.bind(this._bagHost, battle, this._onBoardChanged);
        this._adHost.bind(this._bagHost, battle, map, resolved.opponentRankId, this._onBoardChanged);
        this._onBoardChanged();
        setAiHeroWeaponResolver(this._resolveAiWeaponForLoadout);
        SkillAtkBuffBoardViewBind.bindEnemyNotify(this._onBoardChanged);
        console.warn(
            '[AiBattleBridge] 就绪',
            'rank=' + resolved.opponentRankId,
            'gold=' + this._bagHost.aiGold,
            'nextCost=' + this._bagHost.nextRefreshCost,
            'text=' + personality.textPolicy,
        );
        return true;
    }

    /**
     * 匹配建档全失败时的最小档案（无 buff，仍可走数字合成/解锁）。
     * @param battle 战斗
     */
    private _emergencyProfile(battle: ProjectBattleHandle): AiMatchProfile {
        const rankId = Math.max(1, Math.floor(Number(battle.opponentRankId) || Number(battle.playerRankId) || 1));
        return {
            playerRankId: Math.max(1, Math.floor(Number(battle.playerRankId) || 1)),
            playerStars: 1,
            opponentRankId: rankId,
            opponentStars: 1,
            starOffset: 0,
            activeBuffCount: 0,
            passiveBuffCount: 0,
            activeBuffIds: [],
            passiveBuffIds: [],
            seed: (Date.now() % 100000) || 1,
        };
    }

    /** 棋盘被外部改写后刷新 AI 字块与技能绑定 */
    notifyBoardChanged(): void {
        this._onBoardChanged();
    }

    /** 部署/落子后：刷新技能绑定 + 地图字 TextGrid */
    private readonly _onBoardChanged = (): void => {
        const map = this._map;
        const bag = this._bagHost.bagSession;
        const battle = this._battle;
        if (!map || !bag || !battle) return;
        const aiPlayer = battle.getPlayer(AiHeadlessBagHost.AI_PLAYER_ID) ?? null;
        this._mapText.requestSync(bag, map, aiPlayer);
        this._refreshAiSkills();
    };

    /** 字块表就绪后刷新 AI Skill 绑定 */
    private readonly _refreshAiSkills = (): void => {
        const map = this._map;
        if (!map) return;
        this._skillHost.refresh(map, this._mapText.getMapGrids());
    };

    /** 刷新拍：乾坤袋回收背包多余字 */
    private readonly _tryRecycleSurplusBag = (): boolean => {
        return this._activeSkill.tryRecycleSurplusBag();
    };

    /**
     * 供 TowerLoadout 注册的 AI 武器解析（避免循环 require）。
     * @param heroId Hero.id
     */
    private readonly _resolveAiWeaponForLoadout = (heroId: number): number | null => {
        return this.getHeroBattleWeaponId(heroId);
    };

    /** 战斗结束或切场景时停止 AI */
    stop(): void {
        setAiHeroWeaponResolver(null);
        SkillAtkBuffBoardViewBind.bindEnemyNotify(null);
        this._controller.stop();
        this._passiveCd.dispose();
        this._activeSkill.dispose();
        this._adHost.dispose();
        this._mapText.setAfterFlush(null);
        this._mapText.clear();
        this._skillHost.dispose();
        this._bagHost.dispose();
        this._weaponRegistry.clear();
        BattleBuffCarryStore.clear();
        this._battle = null;
        this._map = null;
    }

    /**
     * 局内三选一：赛前不灌匹配 buff，仅重绑 Host。
     * @param profile 档案
     * @param battle 战斗
     */
    private _mountAiBuffs(profile: AiMatchProfile, battle: ProjectBattleHandle): void {
        const aiPid = AiHeadlessBagHost.AI_PLAYER_ID;
        BattleBuffCarryStore.setFromBuffIds(aiPid, [], []);
        const gmPassive = gg.game.gmAiPassiveBuffIds;
        const gmActive = gg.game.gmAiActiveBuffIds;
        let seeded = 0;
        if (gmActive?.length) {
            for (let i = 0; i < gmActive.length; i++) {
                if (BattleBuffCarryStore.appendBuffId(aiPid, gmActive[i])) seeded++;
            }
        }
        if (gmPassive?.length) {
            for (let i = 0; i < gmPassive.length; i++) {
                if (BattleBuffCarryStore.appendBuffId(aiPid, gmPassive[i])) seeded++;
            }
        }
        if (seeded > 0) {
            aiOp(`GM 覆盖 AI buff 灌入 count=${seeded} profilePassive=[${profile.passiveBuffIds.join(',')}]`);
        } else {
            aiOp(`AI buff 赛前清空（局内解锁三选一）profilePassive=[${profile.passiveBuffIds.join(',')}]`);
        }
        getBattleBuffMoveSpeedHost().bind(battle);
        getBattleBuffUnitAttackSpeedHost().bind(battle);
        getBattleBuffBaseThunderHost().refreshCarry(battle);
        getBattleBuffDigitStatHost().bind(battle);
    }

    /**
     * AI 战斗武器 id（旧 aiweapon 分配已下线，非 null 时亦可能为 0）。
     * @param heroId Hero.id
     */
    getHeroBattleWeaponId(heroId: number): number | null {
        if (!this._profile) {
            aiWarn(`[AiHeroWeapon] skip: profile missing heroId=${heroId}`);
            return null;
        }
        const record = this._weaponAssigner.resolveOrAssign(
            this._weaponRegistry,
            heroId,
            this._profile.opponentRankId,
            this._profile.seed,
        );
        return record != null ? record.weaponId : null;
    }

    /**
     * 每帧 tick。
     * @param dtSec 帧间隔（秒）
     */
    tick(dtSec: number): void {
        if (!this._battle) return;
        // 结算/会话已结束：只停决策，盘面留给 UI teardown 再 dispose
        if (this._battle.IsGameOver || this._battle.session.ended) {
            if (this._controller.running) {
                this._controller.stop();
                this._passiveCd.dispose();
                this._activeSkill.dispose();
                this._adHost.dispose();
                aiOp('局结束，停止决策');
            }
            return;
        }
        // 暂停、等复活：保留状态但不决策 / 不走 CD
        if (this._battle.IsGamePause) return;
        this._passiveCd.tick(dtSec);
        this._adHost.tick(dtSec);
        this._controller.tick(dtSec);
    }
}