#!/usr/bin/env node
/**
 * scripts/generate-voice-aliases.mjs
 *
 * 读取 intelligent_cabin/config/voice_aliases.yml
 * 生成 src/lib/nlu/voice-aliases.gen.ts（构建时嵌入，运行时无需 HTTP 请求）
 *
 * 用法：
 *   node scripts/generate-voice-aliases.mjs
 *   或在 package.json 的 prebuild / predev 中调用
 */

import { readFileSync, writeFileSync } from "node:fs";
import { resolve, dirname } from "node:path";
import { fileURLToPath } from "node:url";

const __dirname = dirname(fileURLToPath(import.meta.url));
const ROOT = resolve(__dirname, "..");

// ── 极简 YAML 解析（只处理本文件的结构，无需外部依赖）────────────────────
function parseSimpleYaml(text) {
  const lines = text.split("\n");
  const result = {};
  let currentKey = null;
  let currentListKey = null;
  let currentObject = result;

  for (const raw of lines) {
    const line = raw;
    const stripped = raw.trimStart();
    if (!stripped || stripped.startsWith("#")) continue;

    const indent = raw.length - stripped.length;

    // 顶级 key（indent = 0）
    if (indent === 0 && stripped.endsWith(":")) {
      currentKey = stripped.slice(0, -1).trim();
      result[currentKey] = {};
      currentObject = result[currentKey];
      currentListKey = null;
      continue;
    }

    // intent_aliases 下的子 key（indent = 2）
    if (indent === 2 && stripped.endsWith(":")) {
      currentListKey = stripped.slice(0, -1).trim();
      if (!Array.isArray(currentObject[currentListKey])) {
        currentObject[currentListKey] = [];
      }
      continue;
    }

    // list items（indent = 2 for top-level lists, indent = 4 for nested）
    if (stripped.startsWith("- ")) {
      const value = stripped.slice(2).trim().replace(/^["']|["']$/g, "");
      if (indent === 2 && !currentListKey) {
        // top-level list under result key
        if (!Array.isArray(result[currentKey])) {
          result[currentKey] = [];
        }
        result[currentKey].push(value);
      } else if (indent === 4 && currentListKey) {
        currentObject[currentListKey].push(value);
      }
      continue;
    }
  }

  return result;
}

// ── 读取 YAML ────────────────────────────────────────────────────────────────
const yamlPath = resolve(ROOT, "intelligent_cabin/config/voice_aliases.yml");
const raw = readFileSync(yamlPath, "utf8");
const parsed = parseSimpleYaml(raw);

const affirmWords = parsed["affirm_words"] ?? [];
const denyWords = parsed["deny_words"] ?? [];
const cancelWords = parsed["cancel_words"] ?? [];
const intentAliases = parsed["intent_aliases"] ?? {};

// ── 生成 TypeScript ───────────────────────────────────────────────────────────
const ts = `// AUTO-GENERATED — do not edit manually
// Source: intelligent_cabin/config/voice_aliases.yml
// Regenerate: node scripts/generate-voice-aliases.mjs

export const AFFIRM_WORDS: readonly string[] = ${JSON.stringify(affirmWords, null, 2)} as const;

export const DENY_WORDS: readonly string[] = ${JSON.stringify(denyWords, null, 2)} as const;

export const CANCEL_WORDS: readonly string[] = ${JSON.stringify(cancelWords, null, 2)} as const;

export const INTENT_ALIASES: Readonly<Record<string, readonly string[]>> = ${JSON.stringify(intentAliases, null, 2)} as const;
`;

const outPath = resolve(ROOT, "src/lib/nlu/voice-aliases.gen.ts");
writeFileSync(outPath, ts, "utf8");
console.log(`✅  Generated: ${outPath}`);