# RFCP - Iteration 9: UX Polish & Workflow Improvements

## Overview

Polish existing features for better workflow without breaking changes.

**Focus:** Keyboard shortcuts, batch operations, number inputs, visual improvements.

---

## Feature 1: Better Keyboard Shortcuts

**Problems:**
1. Ctrl+N conflicts with browser (New Window)
2. Missing useful shortcuts for common actions
3. No sector-specific shortcuts

### New Hotkey Map

**File:** `frontend/src/hooks/useHotkeys.ts` (update)

```typescript
const HOTKEYS = {
  // Coverage
  'ctrl+enter': 'Calculate Coverage',
  'shift+c': 'Clear Coverage',
  
  // Sites
  'shift+s': 'New Site (Place Mode)', // was Ctrl+N
  'm': 'Manual Site Entry',
  
  // View
  'h': 'Toggle Heatmap',
  'g': 'Toggle Grid',
  't': 'Toggle Terrain',
  'r': 'Toggle Ruler',
  
  // Navigation
  'f': 'Fit to Coverage',
  'esc': 'Cancel/Close',
  
  // Selection
  'ctrl+a': 'Select All Sites',
  'ctrl+d': 'Deselect All',
  'delete': 'Delete Selected',
  
  // Edit
  'e': 'Edit Selected Site',
  'shift+e': 'Batch Edit Selected',
  
  // Sector operations
  'ctrl+shift+s': 'Add Sector to Selected',
  
  // Help
  '?': 'Show Keyboard Shortcuts',
};
```

**No conflicts:**
- ✅ Avoid: Ctrl+N, Ctrl+T, Ctrl+W, Ctrl+R, Ctrl+S
- ✅ Use: Shift+, Alt+, single letters (when not in input)
- ✅ Ctrl+ only for safe combos (Ctrl+Enter, Ctrl+A, Ctrl+D)

### Implementation

```typescript
// Check if in input field
const isInputActive = () => {
  const active = document.activeElement;
  return active?.tagName === 'INPUT' || 
         active?.tagName === 'TEXTAREA' ||
         active?.tagName === 'SELECT';
};

// Only trigger shortcuts if NOT in input
useEffect(() => {
  const handler = (e: KeyboardEvent) => {
    if (isInputActive()) return;
    
    // Handle shortcuts...
  };
  
  window.addEventListener('keydown', handler);
  return () => window.removeEventListener('keydown', handler);
}, []);
```

---

## Feature 2: Batch Edit Azimuth

**Problem:** Batch Edit can change height, power, frequency - but not azimuth!

### Solution

**File:** `frontend/src/components/panels/SiteList.tsx`

```typescript
// Add to batch edit UI
{selectedSiteIds.length > 0 && (
  <div className="batch-edit">
    <h4>Batch Edit ({selectedSiteIds.length} selected)</h4>
    
    {/* Existing: Adjust Height, Set Height */}
    
    {/* NEW: Adjust Azimuth */}
    <div className="batch-control">
      <label>Adjust Azimuth:</label>
      <div className="button-group">
        <button onClick={() => adjustAzimuthBatch(-90)}>-90°</button>
        <button onClick={() => adjustAzimuthBatch(-45)}>-45°</button>
        <button onClick={() => adjustAzimuthBatch(-10)}>-10°</button>
        <button onClick={() => adjustAzimuthBatch(+10)}>+10°</button>
        <button onClick={() => adjustAzimuthBatch(+45)}>+45°</button>
        <button onClick={() => adjustAzimuthBatch(+90)}>+90°</button>
      </div>
    </div>
    
    {/* NEW: Set Azimuth */}
    <div className="batch-control">
      <label>Set Azimuth:</label>
      <input 
        type="number" 
        min={0} 
        max={359}
        placeholder="0-359°"
        onKeyDown={(e) => {
          if (e.key === 'Enter') {
            setAzimuthBatch(Number(e.currentTarget.value));
          }
        }}
      />
      <button onClick={() => setAzimuthBatch(0)}>North (0°)</button>
    </div>
  </div>
)}
```

**Store methods:**

```typescript
// In sites.ts
const adjustAzimuthBatch = (delta: number) => {
  const { sites, selectedSiteIds } = get();
  
  selectedSiteIds.forEach(id => {
    const site = sites.find(s => s.id === id);
    if (site) {
      const newAzimuth = (site.azimuth + delta + 360) % 360;
      updateSite(id, { azimuth: newAzimuth });
    }
  });
  
  toast.success(`Adjusted azimuth by ${delta}° for ${selectedSiteIds.length} sites`);
  useCoverageStore.getState().clearCoverage();
};

const setAzimuthBatch = (azimuth: number) => {
  const { selectedSiteIds } = get();
  
  selectedSiteIds.forEach(id => {
    updateSite(id, { azimuth });
  });
  
  toast.success(`Set azimuth to ${azimuth}° for ${selectedSiteIds.length} sites`);
  useCoverageStore.getState().clearCoverage();
};
```

---

## Feature 3: Number Inputs with Arrow Controls

**Problem:** Sliders are imprecise. Need exact values + fine adjustments.

### Enhanced Input Component

**File:** `frontend/src/components/common/NumberInput.tsx` (new)

```typescript
interface NumberInputProps {
  label: string;
  value: number;
  onChange: (value: number) => void;
  min?: number;
  max?: number;
  step?: number;
  unit?: string;
  showSlider?: boolean;
}

export function NumberInput({
  label,
  value,
  onChange,
  min = 0,
  max = 100,
  step = 1,
  unit = '',
  showSlider = true
}: NumberInputProps) {
  return (
    <div className="number-input-group">
      <label>{label}</label>
      
      <div className="input-controls">
        {/* Text input for exact value */}
        <input
          type="number"
          value={value}
          onChange={(e) => onChange(Number(e.target.value))}
          min={min}
          max={max}
          step={step}
          className="number-field"
        />
        
        {/* Arrow buttons */}
        <div className="arrow-controls">
          <button
            onClick={() => onChange(Math.min(max, value + step))}
            className="arrow-up"
            title={`+${step}${unit}`}
          >
            ▲
          </button>
          <button
            onClick={() => onChange(Math.max(min, value - step))}
            className="arrow-down"
            title={`-${step}${unit}`}
          >
            ▼
          </button>
        </div>
        
        {unit && <span className="unit">{unit}</span>}
      </div>
      
      {/* Optional slider for visual feedback */}
      {showSlider && (
        <input
          type="range"
          value={value}
          onChange={(e) => onChange(Number(e.target.value))}
          min={min}
          max={max}
          step={step}
          className="slider"
        />
      )}
    </div>
  );
}
```

**CSS:**

```css
.number-input-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.input-controls {
  display: flex;
  align-items: center;
  gap: 4px;
}

.number-field {
  width: 80px;
  padding: 6px;
  border: 1px solid #ccc;
  border-radius: 4px;
  text-align: center;
  font-size: 14px;
}

.arrow-controls {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.arrow-up, .arrow-down {
  width: 24px;
  height: 16px;
  padding: 0;
  border: 1px solid #ccc;
  background: #fff;
  cursor: pointer;
  font-size: 8px;
  line-height: 1;
}

.arrow-up:hover, .arrow-down:hover {
  background: #f0f0f0;
}

.unit {
  font-size: 12px;
  color: #666;
  margin-left: 4px;
}

.slider {
  width: 100%;
}
```

**Usage in SiteForm:**

```typescript
import { NumberInput } from '@/components/common/NumberInput';

// Replace slider inputs:
<NumberInput
  label="Azimuth"
  value={azimuth}
  onChange={setAzimuth}
  min={0}
  max={359}
  step={1}
  unit="°"
  showSlider={true}
/>

<NumberInput
  label="Height"
  value={height}
  onChange={setHeight}
  min={1}
  max={200}
  step={1}
  unit="m"
  showSlider={true}
/>

<NumberInput
  label="Power"
  value={power}
  onChange={setPower}
  min={10}
  max={60}
  step={1}
  unit="dBm"
  showSlider={true}
/>

<NumberInput
  label="Gain"
  value={gain}
  onChange={setGain}
  min={0}
  max={25}
  step={0.5}
  unit="dBi"
  showSlider={true}
/>

<NumberInput
  label="Beamwidth"
  value={beamwidth}
  onChange={setBeamwidth}
  min={30}
  max={360}
  step={5}
  unit="°"
  showSlider={true}
/>
```

---

## Feature 4: Visual Sector Grouping

**Problem:** UI shows "Sites (2)" but they're actually sectors of same location.

**Solution:** Visual grouping WITHOUT data model change.

### Approach A: Color-coded Names

Auto-detect sites at same location and style them:

```typescript
// In SiteList.tsx
const getSiteGroups = (sites: Site[]) => {
  const groups = new Map<string, Site[]>();
  
  sites.forEach(site => {
    // Group by lat/lon (within 10m)
    const key = `${site.lat.toFixed(4)},${site.lon.toFixed(4)}`;
    if (!groups.has(key)) {
      groups.set(key, []);
    }
    groups.get(key)!.push(site);
  });
  
  return groups;
};

// In render:
{siteGroups.map((group, idx) => {
  if (group.length === 1) {
    // Single site - render normally
    return <SiteItem site={group[0]} />;
  } else {
    // Multi-sector group
    return (
      <div className="sector-group">
        <div className="group-header">
          📡 {group[0].name.replace(/-Alpha|-Beta|-Gamma|-clone/g, '')} ({group.length} sectors)
        </div>
        {group.map(site => (
          <SiteItem 
            key={site.id} 
            site={site} 
            isGrouped={true}
            sectorLabel={getSectorLabel(site.name)}
          />
        ))}
      </div>
    );
  }
})}
```

### Approach B: Compact Display

```typescript
// Show azimuth as badge
<div className="site-info">
  <strong>{site.name}</strong>
  {isGrouped && (
    <span className="sector-badge">
      {site.azimuth}°
    </span>
  )}
</div>
```

---

## Feature 5: Quick Actions Menu

**Add right-click context menu for sites:**

```typescript
// On site item
<div 
  onContextMenu={(e) => {
    e.preventDefault();
    showContextMenu(e, site.id);
  }}
>
  {/* site content */}
</div>

// Context menu
{contextMenu && (
  <ContextMenu
    x={contextMenu.x}
    y={contextMenu.y}
    items={[
      { label: 'Edit', action: () => editSite(siteId) },
      { label: 'Add Sector', action: () => cloneSector(siteId) },
      { label: 'Clone Site', action: () => cloneSite(siteId) },
      { label: 'Zoom to Site', action: () => zoomToSite(siteId) },
      { separator: true },
      { label: 'Delete', action: () => deleteSite(siteId), danger: true },
    ]}
    onClose={() => setContextMenu(null)}
  />
)}
```

---

## Feature 6: Undo/Redo System

**Add undo for destructive operations:**

```typescript
// Simple undo stack
const undoStack: Array<{ action: string; data: any }> = [];

const deleteSite = (id: string) => {
  const site = sites.find(s => s.id === id);
  
  // Push to undo stack
  undoStack.push({ action: 'delete', data: site });
  
  // Perform delete
  setSites(sites.filter(s => s.id !== id));
  
  // Show undo toast
  toast.success('Site deleted', {
    action: {
      label: 'Undo',
      onClick: () => {
        const lastAction = undoStack.pop();
        if (lastAction?.action === 'delete') {
          setSites([...sites, lastAction.data]);
        }
      }
    }
  });
};
```

---

## Recommended Implementation Order

**Priority 1 (Critical UX):**
1. ✅ Fix Ctrl+N hotkey → Shift+S
2. ✅ Add batch azimuth operations
3. ✅ Number inputs with arrows

**Priority 2 (Nice to have):**
4. ⭐ Visual sector grouping (color-coded)
5. ⭐ Additional hotkeys (Shift+C, G, T, R)
6. ⭐ Context menu for sites

**Priority 3 (Future):**
7. 🔮 Undo/Redo system
8. 🔮 Full data model refactor (Site → Sectors)

---

## Testing

### Hotkeys:
- [ ] Shift+S creates new site (Ctrl+N doesn't interfere)
- [ ] H toggles heatmap
- [ ] G toggles grid
- [ ] ? shows shortcuts modal

### Batch Azimuth:
- [ ] Select 3 sites
- [ ] Adjust +45°
- [ ] All sites rotate together

### Number Inputs:
- [ ] Type "135" in azimuth field
- [ ] Click ▲ → 136°
- [ ] Click ▼ → 135°
- [ ] Slider still works

### Visual Grouping:
- [ ] 3 sectors at same location show grouped
- [ ] Badge shows azimuth (0°, 120°, 240°)
- [ ] Single sites show normally

---

## Build & Deploy

```bash
cd /opt/rfcp/frontend
npm run build
sudo systemctl reload caddy
```

---

## Commit Message

```
feat(ux): keyboard shortcuts, batch azimuth, number inputs

- Changed new site hotkey: Ctrl+N → Shift+S (avoid browser conflict)
- Added batch azimuth operations (adjust ±10/45/90°, set absolute)
- Implemented NumberInput component with arrow controls (+/- buttons)
- Added visual sector grouping (detect co-located sites)
- Enhanced hotkey system (G=grid, T=terrain, R=ruler, ?=help)
- Site form now has precise numeric entry + sliders

Improved workflow for multi-sector site planning.
```

🚀 Ready for Iteration 9!
