import { BattlePhase } from 'db://assets/mx/module/battle';
import { LevelWaveParser, NO_BOSS } from '../../battle/config/LevelWaveParser';
import { parseMonsterUnitDefId } from '../../battle/config/MonsterHpCalculator';
import { TableBattleConfigProvider } from '../../battle/config/TableBattleConfigProvider';
import type { ProjectBattleHandle } from '../../battle/runtime/BattleRuntime';
import { TableNames } from '../../game/ConfigTableData';
import { MonsterDataManager, MonsterType } from '../../manager/MonsterDataManager';

/** 万神幡：从己方出怪口额外召唤关卡 Boss */
export class BattleGameExtraBossSkill {
    /**
     * 万神幡动画播完后：从当前关卡 boss 池随机 1 个 Boss，经己方出怪口额外出兵。
     * @param battle 战斗
     * @param ownerPlayerId 施放方；省略则用 battle.player
     * @returns 是否已成功创建实体
     */
    static trySummon(battle: ProjectBattleHandle, ownerPlayerId?: number): boolean {
        if (NO_BOSS) {
            console.log('[BattleGameExtraBossSkill] 调试屏蔽 Boss');
            return false;
        }
        if (battle.session.phase !== BattlePhase.COMBAT) {
            console.log('[BattleGameExtraBossSkill] 仅战斗阶段可召唤 Boss');
            return false;
        }

        const levelRow = gg.data.table.getTableData<ITableLevel>(TableNames.Level, battle.LevelConfigId);
        if (!levelRow) {
            console.log('[BattleGameExtraBossSkill] Level 缺失', battle.LevelConfigId);
            return false;
        }

        const bossIds = LevelWaveParser.collectUniqueBossMonsterIds(levelRow.boss);
        if (bossIds.length <= 0) {
            console.log('[BattleGameExtraBossSkill] 关卡无 Boss 配置', battle.LevelConfigId);
            return false;
        }

        const pickIdx = battle.session.rng.int(0, bossIds.length - 1);
        const monsterId = bossIds[pickIdx];
        const row = MonsterDataManager.getMonsterDataById(monsterId);
        if (!row) {
            console.log('[BattleGameExtraBossSkill] Monster 缺失', monsterId);
            return false;
        }
        if (row.type !== MonsterType.Boss) {
            console.log('[BattleGameExtraBossSkill] 非 Boss 类型，仍尝试召唤', monsterId, row.type);
        }

        const ownerId = ownerPlayerId != null
            ? Math.max(0, Math.floor(Number(ownerPlayerId) || 0))
            : (battle.player?.playerId ?? 0);
        const route = BattleGameExtraBossSkill._resolveSpawnRoute(ownerId);
        const difficultyRow = BattleGameExtraBossSkill._resolveCurrentWaveDifficultyRow(battle, route.spawnPort);
        const config = gg.battle.config as TableBattleConfigProvider;
        const unitDefId = config.ensureSpawnMonsterDef(monsterId, route.spawnPort, difficultyRow);

        // 本项目怪物不设皮肤，不传 spineSkinOverride
        const entity = battle.session.spawner.spawnExtraEnemy(
            unitDefId,
            route.spawnPort,
            route.targetPlayerId,
        );
        if (entity == null) return false;

        console.log(
            `[BattleGameExtraBossSkill] 召唤 Boss id=${monsterId} port=${route.spawnPort}`
            + ` target=${route.targetPlayerId} unitDef=${unitDefId}`,
        );
        return true;
    }

    /** 本机从 spawnPoint_2 攻 AI；AI 从 spawnPoint_1 攻本机 */
    private static _resolveSpawnRoute(ownerPlayerId: number): {
        spawnPort: number;
        targetPlayerId: number;
        enemyCamp: boolean;
    } {
        if (ownerPlayerId === 0) {
            return { spawnPort: 2, targetPlayerId: 1, enemyCamp: false };
        }
        return { spawnPort: 1, targetPlayerId: 0, enemyCamp: true };
    }

    /** 当前波次对应难度行（与技能召唤一致，取本出口首段） */
    private static _resolveCurrentWaveDifficultyRow(battle: ProjectBattleHandle, spawnPort: number): number {
        const waves = battle.session.levelDef?.waves;
        if (!waves?.length) {
            console.log('[BattleGameExtraBossSkill] 无波次配置，难度行兜底 1');
            return 1;
        }

        let wi = battle.session.spawner.waveIndex;
        if (wi < 0) wi = 0;
        if (wi >= waves.length) wi = waves.length - 1;

        const wave = waves[wi];
        let portPlan: (typeof waves)[number]['ports'][number] | null = null;
        for (let i = 0; i < (wave.ports?.length ?? 0); i++) {
            if (wave.ports[i].port === spawnPort) {
                portPlan = wave.ports[i];
                break;
            }
        }
        if (!portPlan?.segments?.length) {
            portPlan = wave.ports?.[0] ?? null;
        }
        const seg = portPlan?.segments?.[0];
        if (!seg) {
            console.log('[BattleGameExtraBossSkill] 波次无出怪段，难度行兜底', wi + 1);
            return wi + 1;
        }

        const fromSeg = Math.max(1, Math.floor(Number(seg.difficultyRow) || 0));
        if (fromSeg > 0) return fromSeg;

        const parsed = parseMonsterUnitDefId(seg.unitDefId);
        if (parsed?.difficultyRow) return Math.max(1, parsed.difficultyRow);

        return wi + 1;
    }
}