import type { EmotionTag } from "@kokorone/shared";
import type { Archetype } from "../personality/archetype-params.js";

export type SentenceEndContour = "RISING" | "FALLING" | "FLAT";

export interface ProsodyTemplate {
  rateDeltaPercent: number; // 語速變化百分比，正值變快
  pitchDeltaSemitones: number; // 音高變化（半音），正值變高
  volumeDeltaPercent: number; // 音量變化百分比，正值變大
  contour: SentenceEndContour;
  characteristic: string; // 描述性文字，供除錯/前端顯示
}

// P-3 情緒 → 韻律對照：情緒狀態機的輸出直接驅動韻律參數。
export const EMOTION_PROSODY_TABLE: Record<EmotionTag, ProsodyTemplate> = {
  CALM: { rateDeltaPercent: 0, pitchDeltaSemitones: 0, volumeDeltaPercent: 0, contour: "FLAT", characteristic: "角色預設值" },
  JOY: { rateDeltaPercent: 15, pitchDeltaSemitones: 1.5, volumeDeltaPercent: 10, contour: "RISING", characteristic: "句尾上揚、偶爾帶笑聲" },
  SAD: { rateDeltaPercent: -20, pitchDeltaSemitones: -1.5, volumeDeltaPercent: -15, contour: "FALLING", characteristic: "句間停頓變長、句尾下沉" },
  ALERT: { rateDeltaPercent: 5, pitchDeltaSemitones: 0, volumeDeltaPercent: 0, contour: "FLAT", characteristic: "語調變平、字句變短" },
  SHY: { rateDeltaPercent: -5, pitchDeltaSemitones: 2, volumeDeltaPercent: -10, contour: "FLAT", characteristic: "結巴、語尾變小聲，忽快忽慢" },
  GRUMPY: { rateDeltaPercent: 10, pitchDeltaSemitones: 1, volumeDeltaPercent: -5, contour: "FALLING", characteristic: "「哼」開頭，先大後小" },
};

// P-1 Voice Sheet 預設值：依性格原型推導基準語速與音域幅度（同 G-5「原型 → 種子預設」的作法）。
export const DEFAULT_VOICE_SHEET_BY_ARCHETYPE: Record<Archetype, { baseTimbre: string; baseRate: number; pitchRangeSemitones: number }> = {
  傲嬌: { baseTimbre: "清亮少女音", baseRate: 1.05, pitchRangeSemitones: 5 },
  冷淡: { baseTimbre: "低沉平穩音", baseRate: 0.85, pitchRangeSemitones: 1.5 },
  天然呆: { baseTimbre: "軟糯蘿莉音", baseRate: 0.95, pitchRangeSemitones: 4 },
  元氣: { baseTimbre: "清亮少女音", baseRate: 1.2, pitchRangeSemitones: 6 },
  大小姐: { baseTimbre: "低沉御姐音", baseRate: 0.95, pitchRangeSemitones: 3.5 },
  三無: { baseTimbre: "軟糯蘿莉音", baseRate: 0.8, pitchRangeSemitones: 0.5 },
};
const DEFAULT_VOICE_SHEET_FALLBACK = { baseTimbre: "清亮少女音", baseRate: 1.0, pitchRangeSemitones: 3 };
export function defaultVoiceSheetFor(archetype: string) {
  return DEFAULT_VOICE_SHEET_BY_ARCHETYPE[archetype as Archetype] ?? DEFAULT_VOICE_SHEET_FALLBACK;
}

// P-2 非語言發聲庫：依情緒狀態的預設候選詞，角色的 Voice Sheet 口頭聲響庫可補充、禁則可過濾排除。
export const DEFAULT_INTERJECTIONS_BY_EMOTION: Record<EmotionTag, string[]> = {
  CALM: ["嗯"],
  JOY: ["欸嘿嘿", "呵呵"],
  SAD: ["唔……", "……"],
  ALERT: ["嗯？", "欸？！"],
  SHY: ["那個……就是……", "唔……"],
  GRUMPY: ["哼！", "哼……"],
};

// P-2 停頓：情緒強度達門檻（沿用 C-4 高情緒事件的判斷門檻）且屬於重大話題時，回答前故意停頓 1~2 秒。
export const SIGNIFICANT_PAUSE_THRESHOLD = 0.6;
export const SIGNIFICANT_PAUSE_SECONDS = [1, 2];
export const DEFAULT_PAUSE_SECONDS = 0.2;

// P-2 打斷與搶話：需要「talkative」特徵（見 archetype-params.ts）且親密度達朋友分層以上才可能插話。
export const INTERRUPT_MIN_INTIMACY = 40;

// P-2 親密度影響音量與氣音比例：對陌生人聲音端正清晰，對摯友放鬆、氣音比例上升。
export function intimacyVoiceModifiers(intimacy: number): { volumeMultiplier: number; breathinessRatio: number } {
  const clamped = Math.max(0, Math.min(100, intimacy));
  return {
    volumeMultiplier: 1 - (clamped / 100) * 0.15, // 端正清晰(1.0) → 放鬆慵懶(0.85)
    breathinessRatio: clamped / 100,
  };
}