export interface BuildingDef {
  id: string
  name: string
  icon: string
  desc: string
  kind: 'produce' | 'function'
  maxLevel: number
  produceTable?: (level: number) => { stone?: number; lingcao?: number; lingkuang?: number; beastcore?: number }
  upgradeCost: (level: number) => { stones: number; lingkuang: number }
  extra?: Record<string, string>
}

export const BUILDINGS: Record<string, BuildingDef> = {
  lingtian: {
    id: 'lingtian', name: '灵田', icon: '田',
    desc: '种植灵草，每月产出稳定。',
    kind: 'produce', maxLevel: 5,
    produceTable: (l) => ({ lingcao: 10 * l }),
    upgradeCost: (l) => ({ stones: 80 * Math.pow(1.7, l - 1), lingkuang: 12 * l })
  },
  yaoyuan: {
    id: 'yaoyuan', name: '药园', icon: '药',
    desc: '培育稀有药草以炼丹药。',
    kind: 'produce', maxLevel: 5,
    produceTable: (l) => ({ lingcao: 5 * l, beastcore: l >= 3 ? 1 : 0 }),
    upgradeCost: (l) => ({ stones: 110 * Math.pow(1.7, l - 1), lingkuang: 15 * l })
  },
  lingkuang: {
    id: 'lingkuang', name: '灵矿', icon: '矿',
    desc: '开采灵石矿脉，供给炼器布阵。',
    kind: 'produce', maxLevel: 5,
    produceTable: (l) => ({ lingkuang: 8 * l }),
    upgradeCost: (l) => ({ stones: 130 * Math.pow(1.7, l - 1), lingkuang: 10 * l })
  },
  fangshi: {
    id: 'fangshi', name: '坊市', icon: '市',
    desc: '设摊售货，每月进账灵石。',
    kind: 'produce', maxLevel: 5,
    produceTable: (l) => ({ stone: 55 * l }),
    upgradeCost: (l) => ({ stones: 150 * Math.pow(1.7, l - 1), lingkuang: 20 * l })
  },
  danfang: {
    id: 'danfang', name: '丹房', icon: '丹',
    desc: '炼制丹药，等级越高成丹率越高。',
    kind: 'function', maxLevel: 5,
    upgradeCost: (l) => ({ stones: 170 * Math.pow(1.7, l - 1), lingkuang: 18 * l }),
    extra: { craftChance: '0.5 + 0.1*L' }
  },
  cangshu: {
    id: 'cangshu', name: '藏书阁', icon: '书',
    desc: '收藏功法典籍，等级越高越能寻得宝典。',
    kind: 'function', maxLevel: 5,
    upgradeCost: (l) => ({ stones: 160 * Math.pow(1.7, l - 1), lingkuang: 12 * l }),
    extra: { unlockGrade: '1 + L' }
  },
  juling: {
    id: 'juling', name: '聚灵阵', icon: '阵',
    desc: '汇聚天地灵气，全族修炼加成。',
    kind: 'function', maxLevel: 5,
    upgradeCost: (l) => ({ stones: 200 * Math.pow(1.7, l - 1), lingkuang: 30 * l }),
    extra: { expBonus: '0.05 * L' }
  },
  yanwu: {
    id: 'yanwu', name: '演武场', icon: '武',
    desc: '操练武艺，家族战力加成。',
    kind: 'function', maxLevel: 5,
    upgradeCost: (l) => ({ stones: 140 * Math.pow(1.7, l - 1), lingkuang: 25 * l }),
    extra: { powerBonus: '0.04 * L' }
  },
  dongfu: {
    id: 'dongfu', name: '洞府', icon: '府',
    desc: '闭关修行之所，闭关者修为加成。',
    kind: 'function', maxLevel: 5,
    upgradeCost: (l) => ({ stones: 220 * Math.pow(1.7, l - 1), lingkuang: 35 * l }),
    extra: { expBonus: '0.08 * L' }
  },
  zongci: {
    id: 'zongci', name: '宗祠', icon: '祠',
    desc: '供奉先祖，家族声望与生育兴旺。',
    kind: 'function', maxLevel: 5,
    upgradeCost: (l) => ({ stones: 120 * Math.pow(1.7, l - 1), lingkuang: 8 * l }),
    extra: { repBonus: '0.3 * L /年' }
  },
  lingshou: {
    id: 'lingshou', name: '灵兽园', icon: '兽',
    desc: '豢养灵兽，战阵之助，偶得兽核。',
    kind: 'function', maxLevel: 5,
    upgradeCost: (l) => ({ stones: 190 * Math.pow(1.7, l - 1), lingkuang: 28 * l }),
    extra: { powerBonus: '0.05 * L' }
  }
}

export const BUILDING_IDS = Object.keys(BUILDINGS)

export function buildingById(id: string): BuildingDef {
  return BUILDINGS[id]
}

/** 解析 extra 表达式（如 '0.5 + 0.1*L'）：仅允许 数字/括号/四则/空格 与变量 L。
 * 白名单校验后求值——所有数字加成以 extra 为单一权威。 */
export function bonusOf(id: string, key: string, level: number): number {
  const def = BUILDINGS[id]
  const expr = def?.extra?.[key]
  if (!expr) return 0
  const sanitized = expr.replace(/L/g, String(level))
  if (!/^[0-9.\s+\-*/()]+$/.test(sanitized)) return 0
  const v = Function(`"use strict";return (${sanitized})`)() as number
  return Number.isFinite(v) ? v : 0
}