// 回响星核 / Echo Nexus — 星潮事件系统（周期性全局玩法修饰）
//
// 深空中偶发的「星潮」会短暂改变物理法则，给放置循环注入动态变化。
// 每 ~40s 间隙后触发一次持续 ~75s 的星潮，6 种类型各有正负效果。

export type TideType =
  | "crystal" // 晶体潮：产能 ×2
  | "resonance" // 谐振风暴：解码奖励 +60%
  | "ruins" // 遗迹共振：探险力 +5、生命 +30
  | "void" // 虚空低语：洞见 ×2
  | "core" // 星核悸动：接触率 ×3、脉冲 ×2
  | "silence"; // 寂静期：产能 ×0.5，但结束时补偿洞见

export interface StarTide {
  type: TideType;
  startedAt: number;
  endsAt: number;
  /** 唯一 id，用于 React key */
  id: string;
}

export interface TideModifiers {
  crystalsPerSecMult: number;
  decodeRewardMult: number;
  insightMultAdd: number; // 加到 insightMult（百分比，0.5 = +50%）
  contactRateMult: number;
  pulsePowerMult: number;
  expeditionPowerBonus: number;
  expeditionHpBonus: number;
  /** 寂静期结束时补偿的洞见（按持续秒数） */
  silenceInsightPerSec?: number;
}

export const TIDE_CONFIG = {
  /** 星潮持续时间（毫秒） */
  duration: 75000,
  /** 星潮之间的间隙（毫秒） */
  gap: 40000,
  /** 首次星潮触发延迟（毫秒，从 init 起） */
  firstDelay: 30000,
};

export const TIDE_EVENTS: Record<
  TideType,
  {
    name: string;
    desc: string;
    color: string;
    glow: string;
    icon: string;
    /** 是否负面事件（影响 UI 提示语气） */
    negative: boolean;
  }
> = {
  crystal: {
    name: "晶体潮",
    desc: "深空晶体涌动，采矿产能翻倍",
    color: "#34d399",
    glow: "rgba(52,211,153,0.5)",
    icon: "✺",
    negative: false,
  },
  resonance: {
    name: "谐振风暴",
    desc: "共振序列被放大，解码奖励 +60%",
    color: "#fb7185",
    glow: "rgba(251,113,133,0.5)",
    icon: "❖",
    negative: false,
  },
  ruins: {
    name: "遗迹共振",
    desc: "远古遗迹苏醒，探险力 +5、生命 +30",
    color: "#fbbf24",
    glow: "rgba(251,191,36,0.5)",
    icon: "⬢",
    negative: false,
  },
  void: {
    name: "虚空低语",
    desc: "虚空传来回响，洞见获取翻倍",
    color: "#e879f9",
    glow: "rgba(232,121,249,0.5)",
    icon: "✷",
    negative: false,
  },
  core: {
    name: "星核悸动",
    desc: "星核震荡，接触率 ×3、脉冲威力 ×2",
    color: "#a5f3fc",
    glow: "rgba(165,243,252,0.5)",
    icon: "✦",
    negative: false,
  },
  silence: {
    name: "寂静期",
    desc: "虚空沉寂，产能减半；结束时按时长补偿洞见",
    color: "#94a3b8",
    glow: "rgba(148,163,184,0.5)",
    icon: "◌",
    negative: true,
  },
};

/** 权重表（寂静期概率略低） */
const TIDE_WEIGHTS: Record<TideType, number> = {
  crystal: 22,
  resonance: 20,
  ruins: 16,
  void: 18,
  core: 14,
  silence: 10,
};

export function rollTide(rng: () => number = Math.random): TideType {
  const total = Object.values(TIDE_WEIGHTS).reduce((a, b) => a + b, 0);
  let r = rng() * total;
  for (const k of Object.keys(TIDE_WEIGHTS) as TideType[]) {
    r -= TIDE_WEIGHTS[k];
    if (r <= 0) return k;
  }
  return "crystal";
}

/** 计算当前星潮的修饰器 */
export function getTideModifiers(tide: StarTide | null): TideModifiers {
  if (!tide) {
    return {
      crystalsPerSecMult: 1,
      decodeRewardMult: 1,
      insightMultAdd: 0,
      contactRateMult: 1,
      pulsePowerMult: 1,
      expeditionPowerBonus: 0,
      expeditionHpBonus: 0,
    };
  }
  switch (tide.type) {
    case "crystal":
      return {
        crystalsPerSecMult: 2,
        decodeRewardMult: 1,
        insightMultAdd: 0,
        contactRateMult: 1,
        pulsePowerMult: 1,
        expeditionPowerBonus: 0,
        expeditionHpBonus: 0,
      };
    case "resonance":
      return {
        crystalsPerSecMult: 1,
        decodeRewardMult: 1.6,
        insightMultAdd: 0,
        contactRateMult: 1,
        pulsePowerMult: 1,
        expeditionPowerBonus: 0,
        expeditionHpBonus: 0,
      };
    case "ruins":
      return {
        crystalsPerSecMult: 1,
        decodeRewardMult: 1,
        insightMultAdd: 0,
        contactRateMult: 1,
        pulsePowerMult: 1,
        expeditionPowerBonus: 5,
        expeditionHpBonus: 30,
      };
    case "void":
      return {
        crystalsPerSecMult: 1,
        decodeRewardMult: 1,
        insightMultAdd: 1, // insightMult 翻倍（+100%）
        contactRateMult: 1,
        pulsePowerMult: 1,
        expeditionPowerBonus: 0,
        expeditionHpBonus: 0,
      };
    case "core":
      return {
        crystalsPerSecMult: 1,
        decodeRewardMult: 1,
        insightMultAdd: 0,
        contactRateMult: 3,
        pulsePowerMult: 2,
        expeditionPowerBonus: 0,
        expeditionHpBonus: 0,
      };
    case "silence":
      return {
        crystalsPerSecMult: 0.5,
        decodeRewardMult: 1,
        insightMultAdd: 0,
        contactRateMult: 1,
        pulsePowerMult: 1,
        expeditionPowerBonus: 0,
        expeditionHpBonus: 0,
        silenceInsightPerSec: 0.4,
      };
  }
}

/** 寂静期结束时的洞见补偿 */
export function computeSilenceCompensation(tide: StarTide): number {
  const mod = getTideModifiers(tide);
  if (!mod.silenceInsightPerSec) return 0;
  const secs = (tide.endsAt - tide.startedAt) / 1000;
  return Math.round(mod.silenceInsightPerSec * secs);
}