// Extract production queue/lifecycle/decoder functions; no model implementation.
import fs from 'node:fs';
import path from 'node:path';
import crypto from 'node:crypto';
import {fileURLToPath} from 'node:url';
const here = path.dirname(fileURLToPath(import.meta.url));
const source = path.resolve(here, '../components/volc_conv_ai/src/transports/high_quality/src/volc_rtc.c');
const raw = fs.readFileSync(source);
const text = raw.toString('utf8').replaceAll('\r\n', '\n');
function between(start, end) {
  const a=text.indexOf(start), b=text.indexOf(end,a);
  if(a<0 || b<0) throw new Error(`Missing production marker ${start}`);
  return text.slice(a,b+end.length);
}
function func(signature, terminator='\n}') { return between(signature,terminator); }
const production = [
  between('/* Own complete transport packets:', '} rtc_rx_packet_t;'),
  between('typedef struct {\n    bool b_pipeline_started;', '} rtc_impl_t;'),
  func('static void __send_data_2_user('),
  func('static void _send_message_2_user('),
  between('/* RTC_RX_HOST_BEGIN:', '/* RTC_RX_HOST_END */'),
  func('static int __rtc_start('),
  func('static int __rtc_stop('),
  func('static void _on_audio_data(', '\n};'),
  func('static void _on_message_received(', '\n};'),
].join('\n\n');
const template = fs.readFileSync(path.join(here,'test_rtc_rx_host.c.in'),'utf8');
if(template.split('/* @PRODUCTION@ */').length!==2) throw new Error('Invalid host template');
const output = path.resolve(process.argv[2] ?? path.join(here,'rtc-rx-host.c'));
fs.mkdirSync(path.dirname(output),{recursive:true});
fs.writeFileSync(output, template.replace('/* @PRODUCTION@ */',production));
const manifest={source,source_sha256:crypto.createHash('sha256').update(raw).digest('hex'),output,
  host_sha256:crypto.createHash('sha256').update(fs.readFileSync(output)).digest('hex'),
  build:'gcc -std=c11 -D_POSIX_C_SOURCE=200809L -g -O1 -fsanitize=address,undefined -fno-omit-frame-pointer -pthread rtc-rx-host.c -o rtc-rx-host'};
fs.writeFileSync(output+'.json',JSON.stringify(manifest,null,2)+'\n');
console.log(JSON.stringify(manifest));