/* ProspectOS frontend MVP. Configure before loading with window.API_BASE = 'http://127.0.0.1:8000'; */
(() => {
  'use strict';
  const API_BASE = (window.API_BASE || localStorage.getItem('prospect_api_base') || '').replace(/\/$/, '');
  const endpoint = (path) => `${API_BASE}${path}`;
  let prospects = [];
  let selectedId = null;
  let currentUser = null;
  const $ = (id) => document.getElementById(id);
  const esc = (value) => String(value ?? '').replace(/[&<>"']/g, c => ({'&':'&amp;','<':'&lt;','>':'&gt;','"':'&quot;',"'":'&#39;'}[c]));
  const scoreClass = (score) => score >= 80 ? 'high' : score >= 60 ? 'medium' : 'low';
  const statusOf = (p) => p.suppressed || p.status === 'suppressed' ? 'suppressed' : (p.reviewed || p.status === 'reviewed' || p.reviewed_at ? 'reviewed' : 'review');
  const freshness = (p) => {
    const raw = p.updated_at || p.last_checked_at || p.created_at;
    if (!raw) return {label:'Unknown', cls:'stale'};
    const days = Math.max(0, Math.floor((Date.now() - new Date(raw).getTime()) / 86400000));
    return {label: days === 0 ? 'Today' : `${days}d ago`, cls: days <= 7 ? 'good' : 'stale'};
  };
  const scoreFor = (p) => Number.isFinite(Number(p.score)) ? Number(p.score) : (p.score_factors || p.factors || []).reduce((n, f) => n + ({named_business:20,business_site:30,email:25,phone:15,description:10}[f] || 0), 0);
  const labelFactor = (f) => ({named_business:'Named business',business_site:'Business site',email:'Email found',phone:'Phone found',description:'Description'}[f] || String(f).replaceAll('_',' '));
  async function request(path, options = {}) {
    const response = await fetch(endpoint(path), {...options, credentials:'include'});
    if (response.status === 401) { showLogin('Your session has expired. Please sign in again.'); throw new Error('unauthorized'); }
    return response;
  }
  function showLogin(message = '') {
    currentUser = null;
    $('dashboardShell').hidden = true; $('loginScreen').hidden = false;
    $('loginMessage').textContent = message; $('loginMessage').className = `form-message${message ? ' error' : ''}`;
  }
  function showDashboard(user) {
    currentUser = user || {};
    const name = currentUser.name || currentUser.full_name || currentUser.email || 'Workspace member';
    const role = currentUser.role || currentUser.roles?.[0] || 'Member';
    $('userIdentity').textContent = `${name} · ${role}`;
    $('userAvatar').textContent = name.split(/\s+/).map(x => x[0]).join('').slice(0,2).toUpperCase();
    $('loginScreen').hidden = true; $('dashboardShell').hidden = false;
  }
  function renderMetrics(summary) {
    const total = Number(summary?.businesses ?? summary?.total ?? prospects.length);
    const high = prospects.filter(p => scoreFor(p) >= 80).length;
    const review = prospects.filter(p => statusOf(p) === 'review').length;
    const fresh = prospects.length ? Math.round(prospects.filter(p => freshness(p).cls === 'good').length / prospects.length * 100) : 0;
    $('metricTotal').textContent = total; $('heroCount').textContent = `${total} prospects`;
    $('metricReview').textContent = summary?.needs_review ?? review; $('metricHigh').textContent = summary?.high_fit ?? high; $('metricFresh').textContent = `${summary?.freshness_under_7d ?? fresh}%`;
  }
  function filtered() {
    const q = $('searchInput').value.trim().toLowerCase(), sf = $('scoreFilter').value, st = $('statusFilter').value;
    return prospects.filter(p => { const s=scoreFor(p), text=`${p.name} ${p.website_domain||p.website||''} ${p.location||''}`.toLowerCase(); return (!q || text.includes(q)) && (sf==='all' || (sf==='high'&&s>=80) || (sf==='medium'&&s>=60&&s<80) || (sf==='low'&&s<60)) && (st==='all' || statusOf(p)===st); });
  }
  function renderRows() {
    const rows = filtered(); $('resultCount').textContent = `Showing ${rows.length} prospect${rows.length===1?'':'s'}`;
    $('prospectRows').innerHTML = rows.length ? rows.map(p => { const s=scoreFor(p), f=freshness(p), st=statusOf(p), factors=p.score_factors||p.factors||[]; return `<tr data-id="${esc(p.id)}" class="${p.id===selectedId?'selected':''}"><td>${esc(p.name)}<span class="company-sub">${esc(p.website_domain || 'no detected website')}</span></td><td><span class="score ${scoreClass(s)}">${s} <small>/ 100</small></span></td><td class="evidence"><strong>${factors.length} signal${factors.length===1?'':'s'}</strong>${esc(factors.slice(0,2).map(labelFactor).join(' · ') || 'Limited evidence')}</td><td><span class="fresh ${f.cls}">${f.label}</span></td><td><span class="status ${st}">${st==='review'?'Needs review':st[0].toUpperCase()+st.slice(1)}</span></td><td class="row-arrow">›</td></tr>`; }).join('') : '<tr><td colspan="6" class="muted">No prospects match these filters.</td></tr>';
    document.querySelectorAll('#prospectRows tr[data-id]').forEach(row => row.addEventListener('click', () => { selectedId = Number(row.dataset.id); renderRows(); renderDetail(); }));
  }
  function renderDetail() {
    const p = prospects.find(x => Number(x.id) === Number(selectedId)); if (!p) return;
    const s=scoreFor(p), st=statusOf(p), f=freshness(p), factors=p.score_factors||p.factors||[], blocked=st==='review' || st==='suppressed';
    $('detailPanel').innerHTML = `<div class="detail-head"><div><p class="eyebrow">PROSPECT DETAIL</p><h3>${esc(p.name)}</h3><p class="detail-domain">${esc(p.website_domain || 'no detected website')}</p></div><span class="status ${st}">${st==='review'?'Needs review':st[0].toUpperCase()+st.slice(1)}</span></div><div class="detail-score"><div><small>Fit score</small><b>${s}<small>/ 100</small></b></div><span class="score ${scoreClass(s)}">${esc(p.confidence || (s>=80?'High':s>=60?'Medium':'Low'))} confidence</span></div><div class="detail-block"><h4>Evidence & signals</h4>${factors.length ? factors.map(x=>`<p class="evidence-line"><span>✓ ${esc(labelFactor(x))}</span><span class="confidence">${esc(p.confidence || 'Medium')}</span></p>`).join('') : '<p>Limited evidence available for this record.</p>'}</div><div class="detail-block"><h4>Data quality</h4><p class="evidence-line"><span>Last checked</span><span>${f.label}</span></p><p class="evidence-line"><span>Website</span><span>${p.website_domain?'Detected':'no detected website'}</span></p></div>${blocked?`<button class="button disabled-action" disabled aria-disabled="true">Outreach unavailable</button><p class="disabled-reason">${st==='suppressed'?'Suppressed records cannot be contacted.':'Review this prospect before outreach is available.'}</p>`:''}`;
  }
  async function loadData() {
    $('apiStatus').textContent='● Connecting…'; $('apiStatus').classList.remove('live');
    try { const [listRes, summaryRes] = await Promise.all([request('/api/v1/businesses'), request('/api/v1/dashboard/summary')]); if (!listRes.ok || !summaryRes.ok) throw new Error('API request failed'); const list=await listRes.json(), summary=await summaryRes.json(); prospects=Array.isArray(list)?list:(list.businesses||list.items||[]); renderMetrics(summary); $('apiStatus').textContent='● API connected'; $('apiStatus').classList.add('live'); } catch (error) { if (error.message === 'unauthorized') { return; } prospects=[]; renderMetrics(null); $('apiStatus').textContent='● API unavailable'; }
    renderRows();
  }
  async function addProspect(event) { event.preventDefault(); const data=Object.fromEntries(new FormData(event.currentTarget).entries()); const msg=$('formMessage'); try { const res=await request('/api/v1/businesses',{method:'POST',headers:{'Content-Type':'application/json'},body:JSON.stringify(data)}); const body=await res.json(); if(!res.ok) throw new Error(body.error||'Could not add prospect'); prospects.unshift(body); msg.textContent='Added to review queue.'; event.currentTarget.reset(); renderMetrics(null); renderRows(); } catch(e) { if(e.message !== 'unauthorized') { msg.textContent=e.message; msg.className='form-message error'; } } }
  function parseCsv(text) { const lines=text.trim().split(/\r?\n/).filter(Boolean), cells=line=>line.match(/("[^"]*(?:""[^"]*)*"|[^,]+)(?=,|$)/g)?.map(x=>x.replace(/^"|"$/g,'').replaceAll('""','"'))||[]; if(!lines.length)return []; const headers=cells(lines[0]); return lines.slice(1,11).map(l=>Object.fromEntries(cells(l).map((v,i)=>[headers[i]||`column_${i+1}`,v]))); }
  function renderCsv(rows) { if(!rows.length){$('csvPreview').innerHTML='<span>⊞</span><p>No data rows found</p>';return;} const h=Object.keys(rows[0]); $('csvPreview').className='csv-table'; $('csvPreview').innerHTML=`<table><thead><tr>${h.map(x=>`<th>${esc(x)}</th>`).join('')}</tr></thead><tbody>${rows.map(r=>`<tr>${h.map(x=>`<td>${esc(r[x])}</td>`).join('')}</tr>`).join('')}</tbody></table><small class="muted">Showing up to 10 rows · Preview only; nothing added yet.</small>`; }
  async function login(event) { event.preventDefault(); const form=event.currentTarget, message=$('loginMessage'); const data=Object.fromEntries(new FormData(form).entries()); message.textContent='Signing in…'; message.className='form-message'; try { const res=await fetch(endpoint('/api/v1/auth/login'),{method:'POST',headers:{'Content-Type':'application/json'},credentials:'include',body:JSON.stringify(data)}); const body=await res.json().catch(()=>({})); if(!res.ok) throw new Error(body.error || 'Invalid email or password.'); await bootstrap(); } catch(e) { if(e.message !== 'unauthorized') { message.textContent=e.message; message.className='form-message error'; } } }
  async function logout() { try { await fetch(endpoint('/api/v1/auth/logout'),{method:'POST',credentials:'include'}); } finally { showLogin('You have been signed out.'); $('loginForm').reset(); } }
  async function bootstrap() { try { const res=await fetch(endpoint('/api/v1/auth/me'),{credentials:'include'}); if(res.status===401) { showLogin(); return; } if(!res.ok) throw new Error('Could not verify session.'); const user=await res.json(); showDashboard(user.user || user); await loadData(); } catch(e) { if(e.message !== 'unauthorized') showLogin('Unable to connect to the workspace. Try again.'); } }
  $('loginForm').addEventListener('submit',login); $('logoutBtn').addEventListener('click',logout); $('searchInput').addEventListener('input',renderRows); $('scoreFilter').addEventListener('change',renderRows); $('statusFilter').addEventListener('change',renderRows); $('refreshBtn').addEventListener('click',loadData); $('addForm').addEventListener('submit',addProspect); $('csvInput').addEventListener('change',e=>{const file=e.target.files[0]; if(file){const reader=new FileReader();reader.onload=()=>renderCsv(parseCsv(reader.result));reader.readAsText(file);}}); $('menuBtn').addEventListener('click',()=>document.querySelector('.sidebar').classList.toggle('open')); document.querySelectorAll('[data-scroll]').forEach(b=>b.addEventListener('click',()=>document.querySelector(b.dataset.scroll)?.scrollIntoView()));
  bootstrap();
})();