/* ai.js — AI/LLM функции: проверка, генерация, объяснение, ассистент */

function llmGeneratedWarning(lang) {
  var text = 'Сделано LLM. Не доверяй, проверяй!';
  switch (lang) {
    case 'php':
      return '// ' + text;
    case 'nodejs':
    case 'go':
      return '// ' + text;
    case 'ruby':
    case 'python':
    default:
      return '# ' + text;
  }
}

function addLLMWarning(code, lang) {
  var body = String(code || '').replace(/^\s+/, '');
  var warning = llmGeneratedWarning(lang);
  if (!body) return warning;
  if (body.indexOf(warning) === 0) return body;
  if (lang === 'php' && body.indexOf('<?php') === 0) {
    var rest = body.slice(5);
    rest = rest.replace(/^\r?\n/, '');
    return '<?php\n' + warning + '\n' + rest;
  }
  return warning + '\n' + body;
}

async function aiCheck(codeId, langId, resultId) {
  var code = document.getElementById(codeId).value.trim();
  var lang = (document.getElementById(langId) ? document.getElementById(langId).value : '') || 'python';
  var resEl = document.getElementById(resultId);
  if (!code) { resEl.style.display = 'block'; resEl.style.background = 'var(--bg-alt)'; resEl.textContent = 'Введите код для проверки.'; return; }
  var btnId = codeId === 'c-code' ? 'c-ai-btn' : 'e-ai-btn';
  var btn = document.getElementById(btnId);
  btn.disabled = true;
  btn.textContent = '⏳ Проверяю...';
  resEl.style.display = 'block';
  resEl.style.background = 'var(--bg-alt)';
  resEl.style.color = 'var(--fg)';
  resEl.textContent = 'Проверяю код линтером...';
  try {
    var data = await requestJSON(API_BASE + '/ai/check', 'POST', { language: lang, code: code });
    resEl.style.background = data.ok ? '#1a3a1a' : '#3a1a1a';
    resEl.style.color = data.ok ? '#8f8' : '#f88';
    resEl.textContent = data.result || '(пустой ответ)';
  } catch (e) {
    resEl.style.background = '#3a2a00';
    resEl.style.color = '#ffa';
    resEl.textContent = 'Ошибка: ' + e.message;
  } finally {
    btn.disabled = false;
    btn.textContent = '🔍 Проверить синтаксис линтером';
  }
}

var _assistantOpen = true;

function toggleAssistant() {
  _assistantOpen = !_assistantOpen;
  document.getElementById('assistant-body').style.display = _assistantOpen ? 'flex' : 'none';
  document.getElementById('assistant-toggle-icon').textContent = _assistantOpen ? '▲' : '▼';
}

async function askAssistant() {
  var inp = document.getElementById('assistant-input');
  var msgs = document.getElementById('assistant-messages');
  var q = inp.value.trim();
  if (!q) return;
  inp.value = '';
  msgs.textContent += '\n\n👤 ' + q + '\n⏳ ...';
  msgs.scrollTop = msgs.scrollHeight;
  try {
    var r = await fetch('/console/api/ai/ask', {
      method: 'POST',
      headers: { 'Content-Type': 'application/json', ...authHeaders() },
      body: JSON.stringify({ mode: 'chat', question: q })
    });
    var d = await r.json();
    msgs.textContent = msgs.textContent.replace('⏳ ...', '🤖 ' + (d.answer || d.error || 'Нет ответа'));
  } catch (e) {
    msgs.textContent = msgs.textContent.replace('⏳ ...', '❌ Ошибка: ' + e.message);
  }
  msgs.scrollTop = msgs.scrollHeight;
}

function showGenPrompt(prefix) {
  prefix = prefix || 'cc';
  var el = document.getElementById(prefix + '-gen-prompt');
  el.style.display = 'flex';
  document.getElementById(prefix + '-gen-desc').focus();
}

async function aiGenerate(prefix) {
  prefix = prefix || 'cc';
  var name = (document.getElementById(prefix + '-name').value || '').trim() || 'my-func';
  var lang = document.getElementById(prefix + '-lang').value || 'python';
  var desc = (document.getElementById(prefix + '-gen-desc').value || '').trim();
  if (!desc) { document.getElementById(prefix + '-gen-desc').focus(); return; }
  var btn = document.getElementById(prefix + '-gen-btn');
  var resEl = document.getElementById(prefix + '-ai-result');
  btn.disabled = true; btn.textContent = '⏳ Генерирую...';
  resEl.style.display = 'block'; resEl.style.background = 'var(--bg-alt)'; resEl.style.color = 'var(--fg)';
  resEl.textContent = 'Запрашиваю у LLM...';
  try {
    var d = await requestJSON('/console/api/ai/ask', 'POST', {
      mode: 'codegen',
      language: lang,
      name: name,
      description: desc
    });
    var code = (d.answer || '').replace(/^```[\w]*\n?/, '').replace(/\n?```$/, '');
    document.getElementById(prefix + '-code').value = addLLMWarning(code, lang);
    document.getElementById(prefix + '-gen-prompt').style.display = 'none';
    resEl.style.background = '#1a3a1a'; resEl.style.color = '#8f8';
    resEl.textContent = 'Код сгенерирован и вставлен.';
  } catch (e) {
    resEl.style.background = '#3a2a00'; resEl.style.color = '#ffa';
    resEl.textContent = 'Ошибка: ' + e.message;
  } finally {
    btn.disabled = false; btn.textContent = '✨ Сгенерировать код LLM';
  }
}

async function aiExplain(codeId, langId, resultId) {
  var code = (document.getElementById(codeId).value || '').trim();
  var lang = (document.getElementById(langId) ? document.getElementById(langId).value : '') || 'python';
  var resEl = document.getElementById(resultId);
  var btnId = codeId === 'c-code' ? 'c-exp-btn' : 'e-exp-btn';
  var btn = document.getElementById(btnId);
  if (!code) { resEl.style.display = 'block'; resEl.style.background = 'var(--bg-alt)'; resEl.textContent = 'Введите код.'; return; }
  btn.disabled = true; btn.textContent = '⏳ Объясняю...';
  resEl.style.display = 'block'; resEl.style.background = 'var(--bg-alt)'; resEl.style.color = 'var(--fg)';
  resEl.textContent = 'Запрашиваю у LLM...';
  try {
    var d = await requestJSON('/console/api/ai/ask', 'POST', {
      mode: 'explain',
      language: lang,
      code: code
    });
    resEl.style.background = '#1a2a3a'; resEl.style.color = '#8cf';
    resEl.textContent = d.answer || '(пустой ответ)';
  } catch (e) {
    resEl.style.background = '#3a2a00'; resEl.style.color = '#ffa';
    resEl.textContent = 'Ошибка: ' + e.message;
  } finally {
    btn.disabled = false; btn.textContent = '📖 LLM: Что делает?';
  }
}