import type { MapTopology } from './MapTopology';

/** 阵营区域隔离维度（战斗模式通过 preset 开关） */
export type CampAreaScope =
    | 'pathfinding'
    | 'targeting'
    | 'projectile'
    | 'aoe'
    | 'spawning'
    | 'concurrentCap'
    | 'waveProgress'
    | 'wall'
    | 'economy'
    | 'deploy'
    | 'placeValidation'
    | 'mechanisms'
    | 'skills';

export type CampAreaPreset = 'none' | 'pathOnly' | 'lane' | 'pvp';

export interface CampAreaPolicy {
    enabled: boolean;
    scopes: Partial<Record<CampAreaScope, boolean>>;
}

const PRESETS: Record<CampAreaPreset, CampAreaPolicy> = {
    none: { enabled: false, scopes: {} },
    pathOnly: { enabled: true, scopes: { pathfinding: true } },
    lane: {
        enabled: true,
        scopes: { pathfinding: true, mechanisms: true, placeValidation: true },
    },
    pvp: {
        enabled: true,
        scopes: {
            pathfinding: true,
            targeting: true,
            projectile: true,
            aoe: true,
            spawning: true,
            concurrentCap: true,
            waveProgress: true,
            wall: true,
            economy: true,
            deploy: true,
            placeValidation: true,
            mechanisms: true,
            skills: true,
        },
    },
};

/** 从 preset 名解析策略 */
export function campAreaPolicyFromPreset(preset: CampAreaPreset): CampAreaPolicy {
    const p = PRESETS[preset];
    return { enabled: p.enabled, scopes: { ...p.scopes } };
}

/**
 * 解析本局阵营区域策略：单区域地图等价 none；多区域默认 pathOnly（仅寻路分区）。
 * @param topology 已导入拓扑
 * @param preset 项目层指定 preset，缺省时按区域数量推断
 */
export function resolveCampAreaPolicy(
    topology: MapTopology,
    preset?: CampAreaPreset,
): CampAreaPolicy {
    if (preset) {
        const policy = campAreaPolicyFromPreset(preset);
        if (!topology.hasMultipleCampAreas()) {
            return { enabled: false, scopes: {} };
        }
        return policy;
    }
    if (!topology.hasMultipleCampAreas()) {
        return { enabled: false, scopes: {} };
    }
    return campAreaPolicyFromPreset('pathOnly');
}

/** @returns 是否启用指定隔离维度 */
export function isCampAreaScoped(policy: CampAreaPolicy, scope: CampAreaScope): boolean {
    return policy.enabled && !!policy.scopes[scope];
}