import { RealmMajor } from '../types/domain'

export interface NpcFamilyDef {
  id: string
  name: string
  region: string
  desc: string
  style: string
  leaderRealm: RealmMajor
  initialPower: number
  powerGrowth: [number, number]
  sells?: string[]
  buys?: string[]
}

export const NPCS: NpcFamilyDef[] = [
  {
    id: 'n-xuanying', name: '玄影沈氏', region: '北岳玄影峰', style: '剑修世家', desc: '隐于北岳的剑修沈氏，剑意凛冽，最为孤傲。',
    leaderRealm: 'foundation', initialPower: 240, powerGrowth: [4, 10],
    sells: ['weapon-qi', 'weapon-ling'], buys: ['lingcao', 'lingkuang']
  },
  {
    id: 'n-danxin', name: '丹心木氏', region: '西川药谷', style: '丹道世家', desc: '悬壶济世的丹道世家，人脉广博，风格和缓。',
    leaderRealm: 'foundation', initialPower: 200, powerGrowth: [3, 9],
    sells: ['pill-qiyuan', 'pill-ningyuan', 'pill-pojing'], buys: ['lingcao', 'beastcore']
  },
  {
    id: 'n-sihai', name: '四海王氏', region: '南都连港', style: '商盟世族', desc: '商通四海，富可敌国，只认灵石不认人。',
    leaderRealm: 'foundation', initialPower: 160, powerGrowth: [5, 12],
    sells: ['lingcao', 'lingkuang'], buys: ['beastcore', 'lingkuang']
  },
  {
    id: 'n-nulei', name: '怒雷祝氏', region: '东丘雷泽', style: '兵修蛮门', desc: '雷泽蛮族的世仇，性情火爆，最易生衅。',
    leaderRealm: 'core', initialPower: 300, powerGrowth: [5, 13],
    sells: [], buys: ['lingkuang', 'beastcore']
  }
]

/** 运行时动态 NPC 注册表（0.1.23 新贵/覆灭；插件化入口） */
const DYNAMIC_NPCS = new Map<string, NpcFamilyDef>()

export function registerNpcDef(def: NpcFamilyDef): void {
  DYNAMIC_NPCS.set(def.id, def)
}

export function unregisterNpcDef(id: string): void {
  DYNAMIC_NPCS.delete(id)
}

/** 双源查询：静态 NPCS → 运行时动态表（新贵）；缺失返回 undefined（调用方防御）。
 * 注意：此函数拒绝 import registry（循环依赖），静态源直连 NPCS；数据包 npcs 覆写暂不走此路。 */
export function npcById(id: string): NpcFamilyDef | undefined {
  const stat = NPCS.find((x) => x.id === id)
  if (stat) return stat
  return DYNAMIC_NPCS.get(id)
}

export function getNpcDefs(): NpcFamilyDef[] {
  return [...NPCS, ...DYNAMIC_NPCS.values()]
}