// ================================================================
// Town Viewer Component (Left panel + Town detail view)
// ================================================================

window.renderTowns = function() {
  const container = document.getElementById('town-list');
  if (!window.towns || !window.towns.length) {
    container.innerHTML = '<p style="color:#444;font-size:0.8rem;">No towns received yet.</p>';
    return;
  }

  // Get active filters
  const searchTerm = (document.getElementById('town-search')?.value || '').toLowerCase();
  const reqFullWh = document.getElementById('filter-full-wh')?.checked;
  const reqFestival = document.getElementById('filter-festival')?.checked;
  const reqPoints = document.getElementById('filter-points')?.checked;

  const filteredTowns = window.towns.filter(t => {
    // 1. Search by name
    if (searchTerm && !t.town_name.toLowerCase().includes(searchTerm)) return false;
    
    const cap = t.resources.storage || 1;
    const wPct = t.resources.wood / cap;
    const sPct = t.resources.stone / cap;
    const iPct = t.resources.iron / cap;
    
    // 2. Full WH (>95%)
    if (reqFullWh && Math.max(wPct, sPct, iPct) < 0.95) return false;
    
    // 3. Festival (Wood>15k, Stone>18k, Iron>15k)
    // City Festival exact costs = 15000, 18000, 15000
    if (reqFestival && (t.resources.wood < 15000 || t.resources.stone < 18000 || t.resources.iron < 15000)) return false;
    
    // 4. Large Points
    if (reqPoints && t.points < 10000) return false;
    
    return true;
  });

  if (filteredTowns.length === 0) {
    container.innerHTML = '<p style="color:#888;font-size:0.85rem;padding:10px;">Καμία πόλη δεν ταιριάζει στα κριτήρια.</p>';
    return;
  }

  const now = Date.now();
  container.innerHTML = filteredTowns.map(t => {
    const updatedMs = new Date(t.updated_at + 'Z').getTime();
    const ageMin = Math.round((now - updatedMs) / 60000);
    const stale = ageMin > 3;
    const selected = t.town_id === window.selectedTownId ? 'selected' : '';

    const cap = t.resources.storage || 1;
    const wPct = t.resources.wood / cap;
    const sPct = t.resources.stone / cap;
    const iPct = t.resources.iron / cap;
    
    let markers = '';
    if (wPct >= 0.95 || sPct >= 0.95 || iPct >= 0.95) {
      markers += '<span title="Γεμάτη Αποθήκη!" style="margin-right:4px;">⚠️</span>';
    }
    if (t.resources.wood >= 15000 && t.resources.stone >= 18000 && t.resources.iron >= 15000) {
      markers += '<span title="Αρκετοί πόροι για Φεστιβάλ!" style="margin-right:4px;">🎭</span>';
    }

    const getC = (pct) => pct >= 0.95 ? 'color:#ff4a4a;font-weight:bold;' : '';

    return `
      <div class="town-card ${selected} ${stale ? 'town-stale' : ''}"
           onclick="selectTown('${t.town_id}')">
        <div class="town-name">${markers}${t.town_name}${t.has_premium ? ' <span style="color:#c8a44a;font-size:0.7rem;">★</span>' : ''}</div>
        <div class="town-meta">${t.sea != null ? `🌊 Θ${t.sea} · ` : ''}${t.points} pts · ${t.god || 'No god'} · ${ageMin}m ago</div>
        <div class="town-res">
          <div class="res-item" style="${getC(wPct)}"><div class="res-icon res-wood"></div>${window.fmt(t.resources.wood)}</div>
          <div class="res-item" style="${getC(sPct)}"><div class="res-icon res-stone"></div>${window.fmt(t.resources.stone)}</div>
          <div class="res-item" style="${getC(iPct)}"><div class="res-icon res-iron"></div>${window.fmt(t.resources.iron)}</div>
          <div class="res-item"><div class="res-icon res-pop"></div>${window.fmt(t.resources.population)}</div>
        </div>
      </div>`;
  }).join('');
};

window.selectTown = function(id) {
  window.selectedTownId = id;
  window.renderTowns();

  document.getElementById('no-town-selected').style.display = 'none';
  document.getElementById('command-form-wrap').style.display = 'block';
  document.getElementById('town-details-panel').style.display = 'block';

  window.renderBuildQueuePreview();
  window.renderBuildingDropdown();
  window.renderUnitDropdown();
  window.renderTownDetails();
};

window.getSelectedTown = function() {
  return window.towns.find(t => t.town_id === window.selectedTownId);
};

window.renderTownDetails = function() {
  const t = window.getSelectedTown();
  if(!t) return;
  
  document.getElementById('td-name').textContent = t.town_name;
  
  const cap = t.resources.storage || 1;
  const getCol = (amt) => {
    const pct = amt / cap;
    if (pct >= 0.95) return 'color: #ff4a4a;'; // Red
    if (pct >= 0.85) return 'color: #ffa500;'; // Orange
    return 'color: #fff;';
  };
  
  const capFmt = (t.resources.storage != null && t.resources.storage !== '') ? window.fmt(t.resources.storage) : '?';
  
  document.getElementById('td-resources').innerHTML = `
    <div style="font-size:0.75rem; color:#aaa; margin-bottom: 4px;">Χωρητικότητα: <strong style="color:#eee">${capFmt}</strong></div>
    <div>${window.RES_ICONS.wood} Ξύλο: <strong style="${getCol(t.resources.wood)}">${window.fmt(t.resources.wood)}</strong></div>
    <div>${window.RES_ICONS.stone} Πέτρα: <strong style="${getCol(t.resources.stone)}">${window.fmt(t.resources.stone)}</strong></div>
    <div>${window.RES_ICONS.iron} Ασήμι: <strong style="${getCol(t.resources.iron)}">${window.fmt(t.resources.iron)}</strong></div>
    <div style="margin-top: 6px;">${window.RES_ICONS.pop} Πληθυσμός: <strong style="color:#fff">${t.resources.population}</strong></div>
  `;
  
  const godName = t.god ? t.god.charAt(0).toUpperCase() + t.god.slice(1) : 'Κανένας';
  const seaStr  = t.sea != null ? `Θ${t.sea}` : '—';
  const coordStr = (t.x != null && t.y != null) ? ` (${Math.round(t.x)}:${Math.round(t.y)})` : '';
  document.getElementById('td-general').innerHTML = `
    <div>Πόντοι: <strong>${t.points}</strong>${t.wonder_points ? ` / Θαύμα: <strong>${t.wonder_points}</strong>` : ''}</div>
    <div>Θεός: <strong>${godName}</strong></div>
    <div>Θάλασσα: <strong style="color:#6fcfcf">${seaStr}</strong><span style="color:#666;font-size:0.72rem">${coordStr}</span></div>
    <div>Παίκτης: <strong style="color:#aaa">${t.player}</strong>${t.has_premium ? ' <span style="color:#c8a44a" title="Premium">★</span>' : ''}</div>
    ${t.alliance_id ? `<div>Συμμαχία: <strong style="color:#aaa">${t.alliance_id}</strong></div>` : ''}
  `;

  // ---- Researches ----
  const researchObj = t.researches || {};
  const researchEntries = Object.entries(researchObj).filter(([k, v]) => 
    k !== 'id' && k !== 'town_id' && (v === true || v === 1 || Number(v) > 0)
  );
  let resHtml = '';
  if (researchEntries.length) {
    resHtml = researchEntries.map(([k]) =>
      `<div>✓ ${k.replace(/_/g, ' ')}</div>`
    ).join('');
  } else {
    resHtml = '<div style="color:#555">Καμία έρευνα</div>';
  }
  document.getElementById('td-researches').innerHTML = resHtml;

  const unitsObj = t.units || {};
  let unitsHtml = '';
  for(const [unitKey, count] of Object.entries(unitsObj)) {
    if(count > 0 && unitKey !== 'militia') { 
      const name = window.UNIT_NAMES_GR[unitKey] || unitKey;
      unitsHtml += `<div>${name}: <strong style="color:#fff">${count}</strong></div>`;
    }
  }
  if(unitsHtml === '') unitsHtml = '<div style="color:#666">Κανένα στράτευμα</div>';
  
  document.getElementById('td-units').innerHTML = unitsHtml;
};