/* The full chain, and specifically: does the ENGLISH the listener sees stay
   exactly as spoken while the translation improves? */
import { pipeline, env } from '@huggingface/transformers';
import { createRequire } from 'module';
import os from 'os'; import path from 'path'; import fs from 'fs'; import vm from 'vm';
const require = createRequire(import.meta.url);
const Liturgy=require('./liturgy.js'), Guard=require('./mt-guard.js'), Preach=require('./preach.js');
const src=fs.readFileSync('engine.js','utf8');
const sb={console}; vm.createContext(sb);
vm.runInContext(src.match(/^const ABBREV_TAIL = .*$/m)[0], sb);
const grab=(n)=>{const i=src.indexOf('function '+n+'(');let d=0;for(let k=src.indexOf('{',i);k<src.length;k++){if(src[k]==='{')d++;else if(src[k]==='}'&&--d===0)return src.slice(i,k+1);}};
vm.runInContext(grab('splitSentences'), sb);

env.allowLocalModels=false;
env.cacheDir=path.join(os.homedir(),'Library/Application Support/Church Translate Models');
const pipe=await pipeline('translation','Xenova/nllb-200-distilled-600M',{dtype:'fp32'});

const UTTERANCES=[
  'Open up to the book of John.',
  'Circle that in your Bible. Amen.',
  'Let that sink in.',
  'Open up to the book of John. God is good. Amen.',
  'We are going to talk about Peter in the Bible.'
];
for (const u of UTTERANCES) {
  console.log('\nSPOKEN / shown in English:  "'+u+'"');
  for (const lang of ['spa_Latn','por_Latn','fra_Latn']) {
    const parts=[];
    for (const s of sb.splitSentences(u)) {
      const set=Liturgy.lookup(s,lang);
      if (set) { parts.push(set); continue; }
      const forMt=Preach.forTranslation(s);
      const o=await pipe(forMt,{src_lang:'eng_Latn',tgt_lang:lang});
      const raw=(Array.isArray(o)?o[0]:o).translation_text.trim();
      parts.push(Guard.clean(forMt,raw).text);
    }
    console.log('   '+lang.slice(0,3)+'  '+parts.join(' '));
  }
}