// DIDI History Page Script (Full V3 API)
console.log('[DIDI History] Script loaded');

let historyData = [];

function getRiskColorByScore(score) {
  if (score >= 80) return '#B91C1C';
  if (score >= 60) return '#EF4444';
  if (score >= 40) return '#F97316';
  if (score >= 20) return '#EAB308';
  return '#22C55E';
}

document.addEventListener('DOMContentLoaded', async () => {
  chrome.runtime.sendMessage({ action: 'getAuthStatus' }, (authResponse) => {
    const authInfo = document.getElementById('authInfo');
    if (authResponse?.authenticated) {
      authInfo.innerHTML = `<span class="auth-connected">Connected</span>`;
    } else {
      authInfo.innerHTML = `<span class="auth-disconnected">Not connected</span>`;
    }
  });

  chrome.storage.local.get(['didiHistory'], (data) => {
    historyData = data.didiHistory || [];
    console.log('[DIDI History] Loaded', historyData.length, 'items');
    renderHistory();
  });

  setupEventListeners();
});

function renderHistory() {
  const grid = document.getElementById('historyGrid');
  const subtitle = document.getElementById('subtitle');

  if (!historyData || historyData.length === 0) {
    subtitle.textContent = 'No analyses yet';
    grid.innerHTML = `<div class="empty-state"><h3>No Analysis History</h3><p>Take a screenshot or analyze text to see results here.</p></div>`;
    return;
  }

  subtitle.textContent = `${historyData.length} analysis result(s)`;

  grid.innerHTML = historyData.map((item, index) => {
    const analysis = item.analysis || {};
    // Backend schema is FLAT: components live directly on `analysis`, not nested under `components`.
    const verdict = analysis.verdict || {};
    const techData = analysis.techniques || {};
    const techniques = techData.techniques_detected || [];
    const claimsData = analysis.claims || {};
    const aiData = analysis.ai_tampered || {};
    const riskScore = verdict.risk_score ?? analysis.risk_score ?? 0;
    const riskCategory = verdict.risk_category || analysis.risk_category || 'Unknown';
    const riskColor = getRiskColorByScore(riskScore);
    const aiProb = aiData.ai_probability ?? 0;
    const analysisType = analysis.analysis_type || analysis.input_type || 'text';
    const createdAt = item.timestamp || '';

    return `
      <div class="history-item" data-index="${index}">
        <div class="risk-badge" style="background: ${riskColor}20; border-color: ${riskColor};">
          <span class="risk-score" style="color: ${riskColor};">${riskScore}</span>
          <span class="risk-category" style="color: ${riskColor};">${riskCategory}</span>
        </div>
        <div class="item-preview">
          <span style="color: #1fb6bd; font-size: 11px; text-transform: uppercase; font-weight: 600;">${analysisType}</span>
        </div>
        <div class="item-stats">
          <div class="stat"><span class="stat-label">Techniques</span><span class="stat-value">${techniques.length}</span></div>
          <div class="stat"><span class="stat-label">Claims</span><span class="stat-value">${claimsData.total_claims || 0}</span></div>
          <div class="stat"><span class="stat-label">AI Prob.</span><span class="stat-value">${aiProb}%</span></div>
        </div>
        <div class="item-actions">
          <button class="view-details-btn" data-index="${index}">View Details</button>
          <button class="delete-btn" data-index="${index}">Delete</button>
        </div>
        ${createdAt ? `<div class="timestamp">${new Date(createdAt).toLocaleString()}</div>` : ''}
      </div>`;
  }).join('');
}

function setupEventListeners() {
  const modal = document.getElementById('analysisModal');
  const modalClose = document.getElementById('modalClose');

  document.getElementById('historyGrid').addEventListener('click', (e) => {
    if (e.target.classList.contains('view-details-btn')) {
      e.preventDefault(); e.stopPropagation();
      openModal(parseInt(e.target.getAttribute('data-index'), 10));
      return;
    }
    if (e.target.classList.contains('delete-btn')) {
      e.preventDefault(); e.stopPropagation();
      deleteItem(parseInt(e.target.getAttribute('data-index'), 10));
      return;
    }
    const card = e.target.closest('.history-item');
    if (card && !e.target.closest('button')) {
      openModal(parseInt(card.getAttribute('data-index'), 10));
    }
  });

  modalClose.addEventListener('click', () => closeModal());
  modal.addEventListener('click', (e) => { if (e.target === modal) closeModal(); });
  document.addEventListener('keydown', (e) => { if (e.key === 'Escape') closeModal(); });
}

function deleteItem(index) {
  if (!confirm('Delete this analysis result?')) return;
  historyData.splice(index, 1);
  chrome.storage.local.set({ didiHistory: historyData }, () => renderHistory());
}

function openModal(index) {
  const item = historyData[index];
  if (!item) return;
  const modal = document.getElementById('analysisModal');
  document.getElementById('modalBody').innerHTML = generateAnalysisHTML(item);
  modal.classList.add('active');
}

function closeModal() {
  document.getElementById('analysisModal').classList.remove('active');
}

function generateAnalysisHTML(item) {
  // Shared renderer mirrors web app PipelineAnalysis layout.
  return window.DidiRender.renderAnalysisHTML(item.analysis || {});
}