/* Sproutly Frontend — Vanilla JS SPA */
const API = '/api';

// ===== API Helpers =====
async function apiFetch(path, opts = {}) {
  const res = await fetch(API + path, {
    headers: { 'Content-Type': 'application/json', ...(opts.headers || {}) },
    ...opts,
    body: opts.body ? JSON.stringify(opts.body) : undefined,
  });
  if (!res.ok) {
    const err = await res.json().catch(() => ({ detail: res.statusText }));
    throw new Error(err.detail || res.statusText);
  }
  if (res.status === 204) return null;
  return res.json();
}

const api = {
  get:    (p)       => apiFetch(p),
  post:   (p, body) => apiFetch(p, { method: 'POST', body }),
  put:    (p, body) => apiFetch(p, { method: 'PUT', body }),
  delete: (p)       => apiFetch(p, { method: 'DELETE' }),
};

// ===== State =====
let state = {
  varieties: [],
  batches: [],
  settings: {},
};

// ===== Toast =====
let toastTimer;
function toast(msg, isError = false) {
  const el = document.getElementById('toast');
  el.textContent = msg;
  el.className = 'toast' + (isError ? ' error' : '');
  clearTimeout(toastTimer);
  toastTimer = setTimeout(() => el.classList.add('hidden'), 3500);
}

// ===== Utility =====
function fmt(dateStr) {
  if (!dateStr) return '—';
  const d = new Date(dateStr + 'T00:00:00');
  return d.toLocaleDateString('en-US', { month: 'short', day: 'numeric', year: 'numeric' });
}

function daysAway(dateStr) {
  if (!dateStr) return null;
  const d = new Date(dateStr + 'T00:00:00');
  const today = new Date(); today.setHours(0,0,0,0);
  return Math.round((d - today) / 86400000);
}

function relDate(dateStr) {
  const d = daysAway(dateStr);
  if (d === null) return '';
  if (d < -1) return `${Math.abs(d)} days ago`;
  if (d === -1) return 'Yesterday';
  if (d === 0) return 'Today';
  if (d === 1) return 'Tomorrow';
  if (d <= 7) return `In ${d} days`;
  return fmt(dateStr);
}

function statusLabel(s) {
  return {
    planned: 'Planned', germinating: 'Germinating', seedling: 'Seedling',
    potted_up: 'Potted Up', hardening: 'Hardening Off', garden: 'In Garden',
    harvested: 'Harvested', failed: 'Failed',
  }[s] || s;
}

function sunLabel(s) {
  return { full_sun: 'Full Sun', part_shade: 'Partial Shade', full_shade: 'Full Shade' }[s] || s;
}

function esc(str) {
  return String(str || '').replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;').replace(/"/g,'&quot;');
}

// ===== Navigation =====
function navigate(page) {
  document.querySelectorAll('.page').forEach(p => p.classList.remove('active'));
  document.querySelectorAll('.nav-link').forEach(l => l.classList.remove('active'));
  document.getElementById('page-' + page)?.classList.add('active');
  document.querySelector(`[data-page="${page}"]`)?.classList.add('active');

  if (page === 'dashboard') loadDashboard();
  if (page === 'varieties') loadVarieties();
  if (page === 'garden')    loadGarden();
  if (page === 'settings')  loadSettings();
}

// ===== Dashboard =====
async function loadDashboard() {
  try {
    const data = await api.get('/dashboard/');

    // Subtitle
    const sub = document.getElementById('dash-subtitle');
    const today = new Date().toLocaleDateString('en-US', { weekday:'long', month:'long', day:'numeric', year:'numeric' });
    sub.textContent = data.location_name
      ? `${data.location_name} — ${today}`
      : today;

    // Stats
    document.getElementById('stat-varieties').textContent = data.stats.total_varieties;
    document.getElementById('stat-active').textContent    = data.stats.active_batches;
    document.getElementById('stat-garden').textContent    = data.stats.in_garden;
    document.getElementById('stat-tasks').textContent     = data.stats.tasks_count;

    // Frost badge
    const fb = document.getElementById('frost-badge');
    if (data.last_frost_date) {
      const d = daysAway(data.last_frost_date);
      if (d !== null && d >= 0 && d <= 60) {
        fb.textContent = `Last frost in ${d} days (${fmt(data.last_frost_date)})`;
        fb.style.display = '';
      } else if (d !== null && d < 0) {
        fb.textContent = `Last frost was ${fmt(data.last_frost_date)}`;
        fb.style.display = '';
      } else {
        fb.textContent = `Last frost: ${fmt(data.last_frost_date)}`;
        fb.style.display = '';
      }
    } else {
      fb.textContent = '';
    }

    // Tasks
    renderTasks(data);

    // Timeline
    renderTimeline(data.timeline, data.last_frost_date);

    // Active batches
    renderActiveBatches(data.active_batches);

  } catch (e) {
    console.error(e);
    document.getElementById('tasks-container').innerHTML = `<div class="empty-state">Error loading dashboard: ${esc(e.message)}</div>`;
  }
}

function renderTasks(data) {
  const container = document.getElementById('tasks-container');
  const allGroups = [
    { key: 'overdue', label: 'Overdue',    tasks: data.tasks_overdue },
    { key: 'today',   label: 'Today',      tasks: data.tasks_today },
    { key: 'week',    label: 'This Week',  tasks: data.tasks_week },
    { key: 'month',   label: 'This Month', tasks: data.tasks_month },
  ].filter(g => g.tasks.length > 0);

  if (!allGroups.length) {
    container.innerHTML = '<div class="empty-state">No upcoming tasks in the next 30 days. Check your settings to set a last frost date.</div>';
    return;
  }

  container.innerHTML = allGroups.map(g => `
    <div class="tasks-group">
      <span class="tasks-group-label ${g.key}">${g.label}</span>
      <div class="task-list">
        ${g.tasks.map(t => renderTask(t)).join('')}
      </div>
    </div>
  `).join('');
}

function renderTask(t) {
  const dateClass = t.urgency === 'overdue' ? 'overdue' : '';
  const dateText  = t.urgency === 'overdue'
    ? `${Math.abs(t.days_away)} days overdue`
    : t.days_away === 0 ? 'Today' : relDate(t.due_date);
  const typeIcon = {
    start_seeds: '&#127793;', pot_up: '&#129716;', transplant: '&#127807;', check_batch: '&#128270;'
  }[t.type] || '&#128203;';

  return `
    <div class="task-card ${t.urgency}">
      <div class="task-dot" style="background:${esc(t.variety_color)}"></div>
      <div class="task-info">
        <div class="task-title">${typeIcon} ${esc(t.title)}</div>
        <div class="task-detail">${esc(t.detail)}</div>
      </div>
      <div class="task-date ${dateClass}">${dateText}</div>
    </div>
  `;
}

// ===== Timeline =====
function renderTimeline(entries, lastFrostDate) {
  const container = document.getElementById('timeline-container');
  if (!entries || !entries.length) {
    container.innerHTML = '<div class="empty-state">No varieties configured.</div>';
    return;
  }

  const today = new Date();
  const startOfYear = new Date(today.getFullYear(), 0, 1);
  const todayDoy = Math.floor((today - startOfYear) / 86400000) + 1;
  const daysInYear = 365;

  const months = ['Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec'];
  const monthStarts = [1,32,60,91,121,152,182,213,244,274,305,335];

  let html = `
    <div style="position:relative; min-width:700px">
      <div class="timeline-months">
        <span></span>
        ${months.map((m, i) => {
          const pct = ((monthStarts[i] - 1) / daysInYear * 100).toFixed(2);
          return `<span>${m}</span>`;
        }).join('')}
      </div>
  `;

  // Today marker (positioned in bar area)
  const todayPct = ((todayDoy - 1) / daysInYear * 100).toFixed(2);

  entries.forEach(e => {
    if (!e.start_day && !e.greenhouse_day && !e.garden_day) return;

    const segments = [];
    // Indoor start to greenhouse
    if (e.start_day && e.greenhouse_day) {
      segments.push({ from: e.start_day, to: e.greenhouse_day, opacity: '0.5', label: 'start' });
    } else if (e.start_day && e.garden_day) {
      segments.push({ from: e.start_day, to: e.garden_day, opacity: '0.45', label: 'start' });
    }
    // Greenhouse to garden
    if (e.greenhouse_day && e.garden_day) {
      segments.push({ from: e.greenhouse_day, to: e.garden_day, opacity: '0.7', label: 'greenhouse' });
    }
    // Garden onwards
    if (e.garden_day) {
      const endDay = Math.min(e.end_day || e.garden_day + 70, daysInYear);
      segments.push({ from: e.garden_day, to: endDay, opacity: '1', label: 'garden' });
    }

    html += `
      <div class="timeline-row">
        <div class="timeline-label" title="${esc(e.full_name)}">${esc(e.name)}</div>
        <div class="timeline-bar-area">
          <div class="timeline-today-line" style="left:${todayPct}%"></div>
          ${segments.map(s => {
            const left = ((Math.max(s.from, 1) - 1) / daysInYear * 100).toFixed(2);
            const width = ((Math.min(s.to, daysInYear) - Math.max(s.from, 1)) / daysInYear * 100).toFixed(2);
            return `<div class="timeline-segment" style="left:${left}%;width:${width}%;background:${e.color};opacity:${s.opacity}" title="${e.full_name}: ${s.label}"></div>`;
          }).join('')}
        </div>
      </div>
    `;
  });

  html += '</div>';
  container.innerHTML = html;
}

// ===== Active Batches =====
function renderActiveBatches(batches) {
  const container = document.getElementById('active-batches-container');
  if (!batches || !batches.length) {
    container.innerHTML = '<div class="empty-state">No active batches yet. Log a batch to get started!</div>';
    return;
  }
  container.innerHTML = batches.map(b => batchCard(b, true)).join('');
}

function batchCard(b, compact = false) {
  const v = b.variety || {};
  const color = v.color || '#52b788';
  const name = b.label || `${v.name}${v.variety_name ? ' ('+v.variety_name+')' : ''}`;
  const meta = [];
  if (b.quantity > 1) meta.push(`${b.quantity} plants`);
  if (b.sow_date) meta.push(`Sown ${fmt(b.sow_date)}`);
  if (b.garden_date) meta.push(`Garden ${fmt(b.garden_date)}`);

  return `
    <div class="batch-card">
      <div class="batch-card-top" style="background:${color}"></div>
      <div class="batch-card-body">
        <div class="badge-status status-${b.status}">${statusLabel(b.status)}</div>
        <div class="batch-card-name">${esc(name)}</div>
        <div class="batch-card-variety">${esc(v.name || '')}${v.variety_name ? ' — ' + esc(v.variety_name) : ''}</div>
        <div class="batch-card-meta">${meta.map(m => `<span class="batch-meta-item">${esc(m)}</span>`).join('')}</div>
        ${b.notes ? `<div class="batch-card-variety" style="margin-bottom:.5rem">${esc(b.notes)}</div>` : ''}
        <div class="batch-card-actions">
          <button class="btn btn-secondary btn-sm" onclick="App.showEditBatchModal(${b.id})">Edit</button>
          <button class="btn btn-danger btn-sm" onclick="App.deleteBatch(${b.id})">Delete</button>
        </div>
      </div>
    </div>
  `;
}

// ===== Varieties =====
async function loadVarieties() {
  try {
    state.varieties = await api.get('/varieties/');
    renderVarieties();
  } catch (e) {
    document.getElementById('varieties-container').innerHTML = `<div class="empty-state">Error: ${esc(e.message)}</div>`;
  }
}

function renderVarieties() {
  const search = (document.getElementById('variety-search')?.value || '').toLowerCase();
  const cat    = document.getElementById('variety-cat-filter')?.value || '';
  const list   = state.varieties.filter(v =>
    (!search || `${v.name} ${v.variety_name || ''}`.toLowerCase().includes(search)) &&
    (!cat    || v.category === cat)
  );

  const container = document.getElementById('varieties-container');
  if (!list.length) {
    container.innerHTML = '<div class="empty-state">No varieties found.</div>';
    return;
  }

  container.innerHTML = `
    <table class="variety-table">
      <thead>
        <tr>
          <th>Plant</th>
          <th>Category</th>
          <th>Start Seeds</th>
          <th>Greenhouse</th>
          <th>Transplant</th>
          <th>Germination</th>
          <th>Sun</th>
          <th>Actions</th>
        </tr>
      </thead>
      <tbody>
        ${list.map(v => `
          <tr>
            <td>
              <span class="variety-color-dot" style="background:${v.color}"></span>
              <strong>${esc(v.name)}</strong>
              ${v.variety_name ? `<br><small style="color:var(--text-muted)">${esc(v.variety_name)}</small>` : ''}
            </td>
            <td><span class="cat-badge cat-${v.category}">${v.category}</span></td>
            <td>${v.weeks_to_start ? `<span class="weeks-chip">${v.weeks_to_start}wk before frost</span>` : '—'}</td>
            <td>${v.weeks_to_greenhouse ? `<span class="weeks-chip">${v.weeks_to_greenhouse}wk before frost</span>` : '—'}</td>
            <td>${v.weeks_to_garden != null
              ? `<span class="weeks-chip">${v.weeks_to_garden >= 0 ? v.weeks_to_garden+'wk after frost' : Math.abs(v.weeks_to_garden)+'wk before frost'}</span>`
              : '—'}</td>
            <td>${v.days_to_germinate ? `${v.days_to_germinate}d` : '—'}</td>
            <td>${sunLabel(v.sun_requirement)}</td>
            <td>
              <div class="btn-row">
                <button class="btn btn-secondary btn-sm" onclick="App.showEditVarietyModal(${v.id})">Edit</button>
                <button class="btn btn-danger btn-sm" onclick="App.deleteVariety(${v.id})">Del</button>
              </div>
            </td>
          </tr>
        `).join('')}
      </tbody>
    </table>
  `;
}

function filterVarieties() { renderVarieties(); }

// ===== Garden =====
async function loadGarden() {
  try {
    state.batches = await api.get('/batches/');
    renderGarden();
  } catch (e) {
    document.getElementById('garden-container').innerHTML = `<div class="empty-state">Error: ${esc(e.message)}</div>`;
  }
}

function renderGarden() {
  const statusFilter = document.getElementById('garden-status-filter')?.value || '';
  const list = state.batches.filter(b => !statusFilter || b.status === statusFilter);
  const container = document.getElementById('garden-container');
  if (!list.length) {
    container.innerHTML = '<div class="empty-state">No batches found.</div>';
    return;
  }
  container.innerHTML = list.map(b => batchCard(b)).join('');
}

function filterBatches() { renderGarden(); }

// ===== Settings =====
function toggleNtfyAuth(type) {
  document.getElementById('ntfy-basic-auth').classList.toggle('hidden', type !== 'basic');
  document.getElementById('ntfy-token-auth').classList.toggle('hidden', type !== 'token');
}

async function loadSettings() {
  try {
    state.settings = await api.get('/settings/');
    const s = state.settings;
    document.getElementById('s-location').value    = s.location_name || '';
    document.getElementById('s-last-frost').value  = s.last_frost_date || '';
    document.getElementById('s-first-frost').value = s.first_frost_fall_date || '';
    document.getElementById('s-timezone').value    = s.timezone || 'UTC';
    document.getElementById('s-ntfy-server').value = s.ntfy_server || 'https://ntfy.sh';
    document.getElementById('s-ntfy-topic').value  = s.ntfy_topic || '';
    document.getElementById('s-notif-time').value  = s.notification_time || '07:00';

    // Auth type
    let authType = 'none';
    if (s.ntfy_api_key) authType = 'token';
    else if (s.ntfy_username) authType = 'basic';
    document.querySelector(`input[name="ntfy-auth-type"][value="${authType}"]`).checked = true;
    toggleNtfyAuth(authType);
    document.getElementById('s-ntfy-username').value = s.ntfy_username || '';
    document.getElementById('s-ntfy-password').value = s.ntfy_password ? '••••••••' : '';
    document.getElementById('s-ntfy-api-key').value  = s.ntfy_api_key  ? '••••••••' : '';
  } catch (e) {
    toast('Failed to load settings: ' + e.message, true);
  }
}

async function saveSettings() {
  try {
    const authType = document.querySelector('input[name="ntfy-auth-type"]:checked').value;
    const rawPassword = document.getElementById('s-ntfy-password').value;
    const rawApiKey   = document.getElementById('s-ntfy-api-key').value;
    // If the placeholder mask is still showing, don't overwrite
    const isMask = v => v === '••••••••';

    const payload = {
      location_name:         document.getElementById('s-location').value || null,
      last_frost_date:       document.getElementById('s-last-frost').value || null,
      first_frost_fall_date: document.getElementById('s-first-frost').value || null,
      timezone:              document.getElementById('s-timezone').value || 'UTC',
      ntfy_server:           document.getElementById('s-ntfy-server').value || 'https://ntfy.sh',
      ntfy_topic:            document.getElementById('s-ntfy-topic').value || null,
      notification_time:     document.getElementById('s-notif-time').value || '07:00',
      ntfy_username: authType === 'basic' ? (document.getElementById('s-ntfy-username').value || null) : null,
      ntfy_password: authType === 'basic' && !isMask(rawPassword) ? (rawPassword || null) : (authType === 'basic' ? undefined : null),
      ntfy_api_key:  authType === 'token' && !isMask(rawApiKey)   ? (rawApiKey  || null) : (authType === 'token'  ? undefined : null),
    };
    // Remove undefined keys so they are excluded from the PUT (server keeps existing value)
    Object.keys(payload).forEach(k => payload[k] === undefined && delete payload[k]);
    await api.put('/settings/', payload);
    toast('Settings saved!');
    document.getElementById('settings-status').textContent = 'Saved!';
    setTimeout(() => document.getElementById('settings-status').textContent = '', 3000);
  } catch (e) {
    toast('Save failed: ' + e.message, true);
  }
}

async function sendTestNotification() {
  try {
    await api.post('/notifications/test', {});
    toast('Test notification sent!');
  } catch (e) {
    toast('Failed: ' + e.message, true);
  }
}

async function sendDailySummary() {
  try {
    await api.post('/notifications/daily', {});
    toast('Daily summary sent!');
  } catch (e) {
    toast('Failed: ' + e.message, true);
  }
}

// ===== Modals =====
function openModal(title, bodyHtml) {
  document.getElementById('modal-title').textContent = title;
  document.getElementById('modal-body').innerHTML = bodyHtml;
  document.getElementById('modal-overlay').classList.remove('hidden');
}

function closeModal(e) {
  if (e && e.target !== document.getElementById('modal-overlay')) return;
  document.getElementById('modal-overlay').classList.add('hidden');
}

function varietyFormHtml(v = {}) {
  const colorOpts = ['#e76f51','#f4a261','#e9c46a','#52b788','#40916c','#2d6a4f','#95d5b2','#2d9cdb','#a8dadc','#e63946'];
  return `
    <div class="form-row">
      <div class="form-group">
        <label class="form-label">Plant Name *</label>
        <input type="text" id="f-name" class="form-input" value="${esc(v.name||'')}" placeholder="e.g. Tomato" required />
      </div>
      <div class="form-group">
        <label class="form-label">Variety Name</label>
        <input type="text" id="f-variety-name" class="form-input" value="${esc(v.variety_name||'')}" placeholder="e.g. Roma" />
      </div>
    </div>
    <div class="form-row">
      <div class="form-group">
        <label class="form-label">Category</label>
        <select id="f-category" class="form-select">
          ${['vegetable','herb','flower','fruit'].map(c => `<option value="${c}" ${v.category===c?'selected':''}>${c}</option>`).join('')}
        </select>
      </div>
      <div class="form-group">
        <label class="form-label">Color Tag</label>
        <select id="f-color" class="form-select">
          ${colorOpts.map(c => `<option value="${c}" ${v.color===c?'selected':''}>${c}</option>`).join('')}
        </select>
      </div>
    </div>
    <div class="form-row">
      <div class="form-group">
        <label class="form-label">Weeks before last frost to start indoors</label>
        <input type="number" id="f-wks-start" class="form-input" value="${v.weeks_to_start||''}" placeholder="e.g. 8" min="0" max="20" />
      </div>
      <div class="form-group">
        <label class="form-label">Weeks before last frost to pot up / greenhouse</label>
        <input type="number" id="f-wks-gh" class="form-input" value="${v.weeks_to_greenhouse||''}" placeholder="e.g. 2" min="0" max="20" />
      </div>
    </div>
    <div class="form-row">
      <div class="form-group">
        <label class="form-label">Weeks to transplant (+ after frost, - before frost)</label>
        <input type="number" id="f-wks-garden" class="form-input" value="${v.weeks_to_garden!=null?v.weeks_to_garden:''}" placeholder="e.g. 2 or -2" min="-8" max="12" />
      </div>
      <div class="form-group">
        <label class="form-label">Days to germinate</label>
        <input type="number" id="f-germinate" class="form-input" value="${v.days_to_germinate||7}" min="1" max="60" />
      </div>
    </div>
    <div class="form-row">
      <div class="form-group">
        <label class="form-label">Sun Requirement</label>
        <select id="f-sun" class="form-select">
          ${['full_sun','part_shade','full_shade'].map(s => `<option value="${s}" ${v.sun_requirement===s?'selected':''}>${sunLabel(s)}</option>`).join('')}
        </select>
      </div>
      <div class="form-group">
        <label class="form-label">Water Needs</label>
        <select id="f-water" class="form-select">
          ${['low','medium','high'].map(w => `<option value="${w}" ${v.water_needs===w?'selected':''}>${w}</option>`).join('')}
        </select>
      </div>
    </div>
    <div class="form-row">
      <div class="form-group">
        <label class="form-check">
          <input type="checkbox" id="f-direct-sow" ${v.direct_sow_ok?'checked':''} />
          Can Direct Sow Outdoors
        </label>
      </div>
      <div class="form-group">
        <label class="form-check">
          <input type="checkbox" id="f-frost-tolerant" ${v.frost_tolerant?'checked':''} />
          Frost Tolerant
        </label>
      </div>
    </div>
    <div class="form-group">
      <label class="form-label">Notes</label>
      <textarea id="f-notes" class="form-textarea">${esc(v.notes||'')}</textarea>
    </div>
  `;
}

function collectVarietyForm() {
  const wg = document.getElementById('f-wks-garden').value;
  return {
    name:              document.getElementById('f-name').value.trim(),
    variety_name:      document.getElementById('f-variety-name').value.trim() || null,
    category:          document.getElementById('f-category').value,
    color:             document.getElementById('f-color').value,
    weeks_to_start:    parseInt(document.getElementById('f-wks-start').value) || null,
    weeks_to_greenhouse: parseInt(document.getElementById('f-wks-gh').value) || null,
    weeks_to_garden:   wg !== '' ? parseInt(wg) : null,
    days_to_germinate: parseInt(document.getElementById('f-germinate').value) || 7,
    sun_requirement:   document.getElementById('f-sun').value,
    water_needs:       document.getElementById('f-water').value,
    direct_sow_ok:     document.getElementById('f-direct-sow').checked,
    frost_tolerant:    document.getElementById('f-frost-tolerant').checked,
    notes:             document.getElementById('f-notes').value.trim() || null,
  };
}

function showAddVarietyModal() {
  openModal('Add Seed Variety', `
    ${varietyFormHtml()}
    <div class="btn-row" style="margin-top:1rem">
      <button class="btn btn-primary" onclick="App.submitAddVariety()">Add Variety</button>
      <button class="btn btn-secondary" onclick="App.closeModal()">Cancel</button>
    </div>
  `);
}

async function submitAddVariety() {
  try {
    const data = collectVarietyForm();
    if (!data.name) { toast('Plant name is required', true); return; }
    await api.post('/varieties/', data);
    closeModal();
    toast('Variety added!');
    await loadVarieties();
  } catch (e) {
    toast('Error: ' + e.message, true);
  }
}

function showEditVarietyModal(id) {
  const v = state.varieties.find(x => x.id === id);
  if (!v) return;
  openModal('Edit ' + v.name, `
    ${varietyFormHtml(v)}
    <div class="btn-row" style="margin-top:1rem">
      <button class="btn btn-primary" onclick="App.submitEditVariety(${id})">Save Changes</button>
      <button class="btn btn-secondary" onclick="App.closeModal()">Cancel</button>
    </div>
  `);
}

async function submitEditVariety(id) {
  try {
    const data = collectVarietyForm();
    if (!data.name) { toast('Plant name is required', true); return; }
    await api.put(`/varieties/${id}`, data);
    closeModal();
    toast('Variety updated!');
    await loadVarieties();
  } catch (e) {
    toast('Error: ' + e.message, true);
  }
}

async function deleteVariety(id) {
  const v = state.varieties.find(x => x.id === id);
  if (!confirm(`Delete ${v ? v.name : 'this variety'}? This will also delete all associated batches.`)) return;
  try {
    await api.delete(`/varieties/${id}`);
    toast('Variety deleted');
    await loadVarieties();
  } catch (e) {
    toast('Error: ' + e.message, true);
  }
}

// ===== Batch Modals =====
function batchFormHtml(b = {}) {
  const varOpts = state.varieties.map(v =>
    `<option value="${v.id}" ${b.variety_id===v.id?'selected':''}>${v.name}${v.variety_name?' ('+v.variety_name+')':''}</option>`
  ).join('');

  return `
    <div class="form-row">
      <div class="form-group">
        <label class="form-label">Plant Variety *</label>
        <select id="bf-variety" class="form-select">${varOpts}</select>
      </div>
      <div class="form-group">
        <label class="form-label">Batch Label</label>
        <input type="text" id="bf-label" class="form-input" value="${esc(b.label||'')}" placeholder="e.g. Main Crop" />
      </div>
    </div>
    <div class="form-row">
      <div class="form-group">
        <label class="form-label">Quantity (seeds/plants)</label>
        <input type="number" id="bf-qty" class="form-input" value="${b.quantity||1}" min="1" />
      </div>
      <div class="form-group">
        <label class="form-label">Status</label>
        <select id="bf-status" class="form-select">
          ${['planned','germinating','seedling','potted_up','hardening','garden','harvested','failed']
            .map(s => `<option value="${s}" ${b.status===s?'selected':''}>${statusLabel(s)}</option>`).join('')}
        </select>
      </div>
    </div>
    <div class="form-row">
      <div class="form-group">
        <label class="form-label">Sow Date</label>
        <input type="date" id="bf-sow" class="form-input" value="${b.sow_date||''}" />
      </div>
      <div class="form-group">
        <label class="form-label">Germination Date</label>
        <input type="date" id="bf-germ" class="form-input" value="${b.germination_date||''}" />
      </div>
    </div>
    <div class="form-row">
      <div class="form-group">
        <label class="form-label">Greenhouse / Pot Up Date</label>
        <input type="date" id="bf-gh" class="form-input" value="${b.greenhouse_date||''}" />
      </div>
      <div class="form-group">
        <label class="form-label">Garden Transplant Date</label>
        <input type="date" id="bf-garden" class="form-input" value="${b.garden_date||''}" />
      </div>
    </div>
    <div class="form-group">
      <label class="form-label">Notes</label>
      <textarea id="bf-notes" class="form-textarea">${esc(b.notes||'')}</textarea>
    </div>
  `;
}

function collectBatchForm() {
  return {
    variety_id:       parseInt(document.getElementById('bf-variety').value),
    label:            document.getElementById('bf-label').value.trim() || null,
    quantity:         parseInt(document.getElementById('bf-qty').value) || 1,
    status:           document.getElementById('bf-status').value,
    sow_date:         document.getElementById('bf-sow').value || null,
    germination_date: document.getElementById('bf-germ').value || null,
    greenhouse_date:  document.getElementById('bf-gh').value || null,
    garden_date:      document.getElementById('bf-garden').value || null,
    notes:            document.getElementById('bf-notes').value.trim() || null,
  };
}

function showAddBatchModal() {
  if (!state.varieties.length) {
    // Load varieties first if not loaded
    api.get('/varieties/').then(v => { state.varieties = v; showAddBatchModal(); });
    return;
  }
  openModal('Log a Batch', `
    ${batchFormHtml()}
    <div class="btn-row" style="margin-top:1rem">
      <button class="btn btn-primary" onclick="App.submitAddBatch()">Log Batch</button>
      <button class="btn btn-secondary" onclick="App.closeModal()">Cancel</button>
    </div>
  `);
}

async function submitAddBatch() {
  try {
    const data = collectBatchForm();
    await api.post('/batches/', data);
    closeModal();
    toast('Batch logged!');
    state.batches = await api.get('/batches/');
    renderGarden();
  } catch (e) {
    toast('Error: ' + e.message, true);
  }
}

async function showEditBatchModal(id) {
  try {
    if (!state.varieties.length) state.varieties = await api.get('/varieties/');
    const b = state.batches.find(x => x.id === id) || await api.get(`/batches/${id}`);
    openModal('Edit Batch', `
      ${batchFormHtml(b)}
      <div class="btn-row" style="margin-top:1rem">
        <button class="btn btn-primary" onclick="App.submitEditBatch(${id})">Save Changes</button>
        <button class="btn btn-secondary" onclick="App.closeModal()">Cancel</button>
      </div>
    `);
  } catch (e) {
    toast('Error: ' + e.message, true);
  }
}

async function submitEditBatch(id) {
  try {
    const data = collectBatchForm();
    await api.put(`/batches/${id}`, data);
    closeModal();
    toast('Batch updated!');
    state.batches = await api.get('/batches/');
    renderGarden();
    renderActiveBatches(state.batches.filter(b =>
      !['harvested','failed'].includes(b.status)
    ));
  } catch (e) {
    toast('Error: ' + e.message, true);
  }
}

async function deleteBatch(id) {
  if (!confirm('Delete this batch?')) return;
  try {
    await api.delete(`/batches/${id}`);
    toast('Batch deleted');
    state.batches = await api.get('/batches/');
    renderGarden();
  } catch (e) {
    toast('Error: ' + e.message, true);
  }
}

// ===== Init =====
function init() {
  // Sidebar date
  document.getElementById('sidebar-date').textContent =
    new Date().toLocaleDateString('en-US', { month: 'short', day: 'numeric', year: 'numeric' });

  // Navigation via hash
  function handleNav() {
    const page = (location.hash.replace('#','') || 'dashboard');
    navigate(['dashboard','varieties','garden','settings'].includes(page) ? page : 'dashboard');
  }
  window.addEventListener('hashchange', handleNav);
  handleNav();
}

// ===== Public API =====
window.App = {
  showAddVarietyModal, showEditVarietyModal, submitAddVariety, submitEditVariety, deleteVariety,
  showAddBatchModal, showEditBatchModal, submitAddBatch, submitEditBatch, deleteBatch,
  filterVarieties, filterBatches,
  saveSettings, toggleNtfyAuth, sendTestNotification, sendDailySummary,
  closeModal: (e) => closeModal(e),
};

document.addEventListener('DOMContentLoaded', init);