import { catalog } from './catalog.js';
import { files } from './files.js';

const state = { selected: catalog[0], query: '', preview: 'original', source: '', file: null };
const $ = (selector) => document.querySelector(selector);
const escape = (value) => value.replace(/[&<>"']/g, (character) => ({ '&':'&amp;', '<':'&lt;', '>':'&gt;', '"':'&quot;', "'":'&#039;' })[character]);
const redact = (value) => value.replace(/(NDO_PASS[^\n=]*[=:]\s*["']?)[^\n"']+/gi, '$1[REDACTED]').replace(/(password["']?\s*[:=]\s*["']?)[^\n"']+/gi, '$1[REDACTED]').replace(/\bsysadm@netcracker\.com\b/gi, '[REDACTED SERVICE ACCOUNT]');
const download = (name, content) => { const url = URL.createObjectURL(new Blob([content], { type: 'text/markdown' })); const a = document.createElement('a'); a.href = url; a.download = name; a.click(); URL.revokeObjectURL(url); };
const copy = async (content) => {
  if (navigator.clipboard?.writeText) return navigator.clipboard.writeText(content);
  const textarea = document.createElement('textarea'); textarea.value = content; textarea.setAttribute('readonly', ''); textarea.style.position = 'fixed'; textarea.style.opacity = '0'; document.body.append(textarea); textarea.select(); document.execCommand('copy'); textarea.remove();
};

function visible() { return catalog.filter((item) => `${item.author} ${item.title} ${item.focus}`.toLowerCase().includes(state.query)); }
function syncUrl() {
  const url = new URL(window.location.href);
  url.searchParams.set('author', state.selected.author);
  url.searchParams.set('skill', state.selected.id);
  url.searchParams.set('view', state.preview);
  if (state.file && state.file.name !== 'SKILL.md') url.searchParams.set('file', state.file.name); else url.searchParams.delete('file');
  history.replaceState({}, '', url);
}
function selectFromUrl() {
  const params = new URLSearchParams(window.location.search);
  const author = params.get('author');
  const id = params.get('skill');
  const view = params.get('view');
  const byAuthor = author && catalog.filter((item) => item.author.toLowerCase() === author.toLowerCase());
  const byId = id && catalog.find((item) => item.id === id);
  state.selected = byId || byAuthor?.[0] || catalog[0];
  state.query = byAuthor ? state.selected.author.toLowerCase() : '';
  state.preview = view === 'improved' ? 'improved' : 'original';
  const available = files[state.selected.id] || [{ name:'SKILL.md', path:state.selected.path, kind:'skill' }];
  state.file = available.find((item) => item.name === params.get('file')) || available[0];
  $('#skill-filter').value = byAuthor ? state.selected.author : '';
}
function renderList() {
  const items = visible();
  $('#count').textContent = `${items.length} of ${catalog.length} reviewed`;
  $('#skill-list').innerHTML = items.map((item) => `<button role="option" aria-selected="${item.id === state.selected.id}" class="${item.id === state.selected.id ? 'active' : ''}" data-id="${item.id}"><span>${escape(item.author)}</span><strong>${escape(item.title)}</strong><small>${escape(item.status)}</small></button>`).join('');
  $('#skill-list').querySelectorAll('button').forEach((button) => button.addEventListener('click', () => { state.selected = catalog.find((item) => item.id === button.dataset.id); state.file = (files[state.selected.id] || [{ name:'SKILL.md', path:state.selected.path, kind:'skill' }])[0]; state.preview = 'original'; state.source = ''; syncUrl(); renderList(); renderDetail(); }));
}
async function original(entry) {
  if (state.source) return state.source;
  try { state.source = redact(await (await fetch(state.file.path)).text()); } catch { state.source = '# Original preview unavailable\n\nServe this site from the repository root to load the submitted source.'; }
  renderDetail();
  return state.source;
}
function renderDetail() {
  const entry = state.selected; const available = files[entry.id] || [{ name:'SKILL.md', path:entry.path, kind:'skill' }]; const markdown = state.preview === 'original' ? (state.source || 'Loading original Markdown…') : entry.improved;
  $('#detail').innerHTML = `<header><div><span class="status">${escape(entry.status)}</span><h2>${escape(entry.title)}</h2><p>Submitted by <a class="author-link" href="?author=${encodeURIComponent(entry.author)}">${escape(entry.author)}</a> · <a class="share-link" href="?author=${encodeURIComponent(entry.author)}&skill=${encodeURIComponent(entry.id)}&view=${state.preview}">share review ↗</a></p></div><div class="switch" role="group" aria-label="Preview version"><button class="${state.preview === 'original' ? 'active' : ''}" data-preview="original">Original</button><button class="${state.preview === 'improved' ? 'active' : ''}" data-preview="improved">Improved draft</button></div></header>
  <div class="purpose"><span>THE JOB</span><p>${escape(entry.focus)}</p></div>
  <div class="review-grid"><section><span>WHAT'S ALREADY WORKING</span><ul>${entry.wins.map((item) => `<li>${escape(item)}</li>`).join('')}</ul></section><section><span>HIGHEST-VALUE IMPROVEMENTS</span><ul>${entry.improve.map((item) => `<li>${escape(item)}</li>`).join('')}</ul></section></div>
  <aside class="extras"><span>GOOD NEXT ADDITION</span><p>${escape(entry.extras)}</p></aside>
  <section class="preview"><header><span>${state.preview === 'original' ? 'ORIGINAL / SAFETY-REDACTED WHERE NEEDED' : 'IMPROVED DRAFT / READY TO ADAPT'}</span><div><button data-copy>Copy</button><button data-download>Download</button></div></header><nav class="file-tabs" aria-label="Skill package files">${available.map((item) => `<button class="${item.name === state.file.name ? 'active' : ''}" data-file="${escape(item.name)}"><span>${escape(item.kind)}</span>${escape(item.name)}</button>`).join('')}</nav><pre><code>${escape(markdown)}</code></pre></section>`;
  $('#detail').querySelectorAll('[data-file]').forEach((button) => button.addEventListener('click', () => { state.file = available.find((item) => item.name === button.dataset.file) || available[0]; state.source = ''; state.preview = 'original'; syncUrl(); renderDetail(); }));
  $('#detail').querySelectorAll('[data-preview]').forEach((button) => button.addEventListener('click', () => { state.preview = button.dataset.preview; state.source = state.preview === 'original' ? state.source : ''; syncUrl(); renderDetail(); if (state.preview === 'original') original(entry); }));
  $('[data-copy]').addEventListener('click', async () => { const content = state.preview === 'original' ? await original(entry) : entry.improved; await copy(content); $('[data-copy]').textContent = 'Copied'; });
  $('[data-download]').addEventListener('click', async () => download(`${entry.id}-${state.file.name.replaceAll('/', '-')}-${state.preview}.md`, state.preview === 'original' ? await original(entry) : entry.improved));
  if (state.preview === 'original' && !state.source) original(entry);
}
$('#skill-filter').addEventListener('input', (event) => { state.query = event.target.value.toLowerCase().trim(); renderList(); });
window.addEventListener('popstate', () => { state.source = ''; selectFromUrl(); renderList(); renderDetail(); });
selectFromUrl();
renderList(); renderDetail();