# Timeline Feature Implementation

## Overview
Implemented a chronological timeline **modal** in the security investigation report to address analyst feedback (#2 priority improvement: "Timeline/Chronology Missing").

## Implementation Details

### Location in Report
- **Trigger**: Timeline button in header section (next to investigation period metadata)
- **Display**: Modal popup overlay (centered on screen)
- **Section Title**: "📅 Investigation Timeline"
- **Interaction**: Click button to open, ESC or outside click to close

### Code Changes

#### 1. Modified `report_generator.py` - Header Section (Timeline Button)
**Lines 265-273**: Added timeline button to header metadata area
```python
<div class="meta">
    <div><strong>Investigation Date:</strong> {result.investigation_date}</div>
    <div><strong>Period:</strong> {result.start_date} to {result.end_date}</div>
    <div style="margin-top: 8px;">
        <button class="timeline-button" onclick="openTimeline()">📅 View Investigation Timeline</button>
    </div>
</div>
```

#### 2. Modified `report_generator.py` - HTML Assembly
**Lines 185-202**: Timeline modal added at end of body (before JavaScript)
```python
    </div>
    {timeline_modal}
    {self._get_javascript()}
</body>
```

#### 3. Added `_build_timeline_modal()` Method
**Lines 1746-1759**: Creates modal container structure
```python
def _build_timeline_modal(self, result: InvestigationResult) -> str:
    """Build timeline modal with chronological events"""
    timeline_items = self._build_timeline_items(result)
    
    return f"""
    <div id="timelineModal" class="timeline-modal">
        <div class="timeline-modal-content">
            <span class="timeline-close" onclick="closeTimeline()">&times;</span>
            <h2 style="color: #00a1f1; margin-bottom: 20px;">📅 Investigation Timeline</h2>
            <div class="timeline">
                {timeline_items}
            </div>
        </div>
    </div>
    """
```

#### 4. Added `_build_timeline_items()` Method
**Lines 1762-2000+**: Aggregates temporal events from multiple data sources

**Data Sources**:
- `result.anomalies` (detected_date)
- `result.risk_detections` (detected_date)
- `result.risky_signins` (created_date)
- `result.security_alerts` (TimeGenerated/CreatedTime)
- `result.signin_events` (sign-in failures, location changes)
- `result.audit_events` (password resets, role changes, policy modifications)
- `result.office_activity` (email, Teams, file access)

**Event Properties**:
- `timestamp`: Parsed datetime for sorting
- `type`: Event category (anomaly/risk_detection/risky_signin/incident/signin_failure/audit/office)
- `severity`: Risk level (high/medium/low/informational)
- `title`: Event name/type
- `details`: Location, IP, status, classification
- `icon`: Visual indicator (🚨/⚠️/🔐/🛡️/📍/🔑/📧)
- `ip_badges`: Dynamic badges for IPs (🚨 THREAT, ⚠️ RISKY, ANOMALY, PRIMARY, ACTIVE)

**Processing Logic**:
1. Collect all temporal events from 7+ data sources
2. Parse ISO 8601 timestamps (handle 'Z' suffix, fractional seconds)
3. Extract IP addresses and generate contextual badges
4. Sort by timestamp (most recent first)
5. Group by date with date separators
6. Apply color-coded severity markers
7. Render in modal with scrollable container

#### 5. Added JavaScript Functions
**Lines 2563-2581**: Modal interaction handlers
```javascript
function openTimeline() {
    document.getElementById('timelineModal').classList.add('active');
}

function closeTimeline() {
    document.getElementById('timelineModal').classList.remove('active');
}

// Close modal on ESC or outside click
window.onclick = function(event) {
    const modal = document.getElementById('timelineModal');
    if (event.target === modal) {
        closeTimeline();
    }
}

document.addEventListener('keydown', function(event) {
    if (event.key === 'Escape') {
        closeTimeline();
    }
});
```

#### 6. Enhanced CSS Styles
**Lines 2330-2430+**: Added comprehensive timeline modal and timeline item styling

**New CSS Classes**:
- `.timeline-modal`: Full-screen overlay with dark background (rgba(0,0,0,0.8))
- `.timeline-modal.active`: Display modal when active class applied
- `.timeline-modal-content`: Centered container (60% width, max 900px, scrollable)
- `.timeline-close`: Close button (×) in top-right corner
- `.timeline-button`: Blue gradient button in header metadata area
- `.timeline`: Vertical timeline container with left border
- `.timeline::before`: Blue gradient vertical line connecting events
- `.timeline-date-separator`: Date grouping headers with blue left border
- `.timeline-date-label`: Date text formatting (blue, bold, 1.1em)
- `.timeline-marker`: Colored severity dots with icons (24px circle)
- `.timeline-marker.high`: Red background (#f65314)
- `.timeline-marker.medium`: Gold background (#ffbb00)
- `.timeline-marker.low`: Blue background (#00a1f1)
- `.timeline-icon`: Emoji icons in markers
- `.timeline-content`: Event content container
- `.timeline-time`: Time stamp display with PST timezone
- `.timeline-title`: Event title with inline severity badge
- `.timeline-details`: Additional event context (IP, location, status)

**Color Coding**:
- Critical/High: `#f65314` (Microsoft Orange)
- Medium: `#ffbb00` (Microsoft Gold)
- Low/Informational: `#00a1f1` (Microsoft Blue)

## Example Timeline Output

**Timeline Button in Header:**
```
Investigation Date: 2025-11-24
Period: 2025-10-28 to 2025-11-29
[📅 View Investigation Timeline]  ← Click to open modal
```

**Modal Timeline Content:**
```
📅 Investigation Timeline                                                    [×]
────────────────────────────────────────────────────────────────────────────

November 23, 2025
──────────────────
🛡️ 08:10 PM PST | High | Authentications of Privileged Accounts
              193.19.205.125 🚨 THREAT ⚠️ RISKY ANOMALY
              Status: Closed | Classification: BenignPositive

🚨 04:30 PM PST | Medium | NewNonInteractiveIP
              193.19.205.125 (Sao Paulo, BR) ⚠️ RISKY ANOMALY

🚨 04:30 PM PST | Medium | NewInteractiveIP
              193.19.205.125 (Sao Paulo, BR) ⚠️ RISKY ANOMALY

November 22, 2025
──────────────────
📍 02:15 PM PST | Medium | Sign-in failure from new location
              Tokyo, JP (203.0.113.42) 🚨 THREAT

🔑 10:30 AM PST | Low | Password reset by user
              Seattle, US - Self-service password reset

November 18, 2025
──────────────────
🔐 11:00 PM PST | Medium | Risky sign-in to Azure Portal
              149.22.81.146 (Vancouver, CA) PRIMARY - atRisk

⚠️ 11:00 PM PST | Medium | unfamiliarFeatures
              Vancouver, CA - confirmedSafe
```

**Interaction:**
- Click outside modal or press ESC to close
- Scroll vertically if more than ~15 events
- IP badges show contextual threat/risk/anomaly status

## Benefits

### For Security Analysts
1. **Quick Event Correlation**: Instantly see if anomalies align with incidents
2. **Temporal Context**: Understand attack progression (e.g., Nov 18 unfamiliar → Nov 23 Brazil VPN)
3. **Pattern Recognition**: Identify clusters of activity on specific dates
4. **Investigation Efficiency**: No manual cross-referencing of timestamps across sections
5. **Non-Intrusive**: Modal keeps main report clean, opens on-demand
6. **IP Context**: Dynamic badges show threat/risk/anomaly status per IP
7. **Keyboard Shortcuts**: ESC to close, click outside to dismiss

### For Report Quality
1. **Professional Presentation**: Modal overlay with centered, scrollable content
2. **Comprehensive Coverage**: Aggregates 7+ data sources (anomalies, risk detections, risky sign-ins, incidents, sign-in failures, audit logs, Office activity)
3. **Analyst-Friendly**: Most recent events first (reverse chronological)
4. **Accessibility**: Dark theme with high-contrast colors, keyboard navigation
5. **Space Efficient**: Doesn't clutter main report, available when needed
6. **Dynamic IP Badges**: Shows threat intelligence, risky IPs, anomalies, primary/active status

## Data Quality Considerations

### Timestamp Parsing
- Handles ISO 8601 format with 'Z' suffix: `2025-11-23T16:30:00Z`
- Converts to local timezone for display (PST/PDT)
- Gracefully handles missing/malformed timestamps (skips event)

### Event Deduplication
- No deduplication implemented (by design)
- Same IP can appear multiple times if detected in different data sources
- Example: `193.19.205.125` appears twice (Interactive + Non-Interactive anomaly)
- This is intentional - shows full event sequence

### Missing Data Handling
- If no temporal events exist, timeline button is still shown (defensive design)
- Empty timeline shows "No events found" message in modal
- Prevents confusion if timeline button doesn't appear

## Testing

### Test Case: 30-Day Investigation (user@domain.com)
**JSON File**: `temp/investigation_user_20251124_204734.json`
**Generated Report**: `reports/Investigation_Report_user_2025-11-24_130940.html`

**Results**:
- ✅ Timeline button displays in header metadata area
- ✅ Modal opens on click with centered overlay
- ✅ Events span 6 days (Nov 18-23)
- ✅ Date separators display correctly with blue accent
- ✅ Severity color coding works (high=red/orange, medium=gold, low=blue)
- ✅ Icons render correctly (🚨/⚠️/🔐/🛡️/📍/🔑/📧)
- ✅ All 7+ event types present (anomalies, risk detections, risky sign-ins, incidents, sign-in failures, audit events, Office activity)
- ✅ IP badges display dynamically (🚨 THREAT, ⚠️ RISKY, ANOMALY, PRIMARY, ACTIVE)
- ✅ ESC and outside-click close modal correctly
- ✅ Scrollable content for long timelines (>15 events)

## Future Enhancements

### Potential Improvements
1. **Event Filtering**: Add filter controls in modal (by severity/type/IP)
2. **Event Grouping**: Collapse multiple similar events (e.g., "3 NewIP anomalies at 04:30 PM")
3. **Interactive Timeline**: Click event to jump to detailed section in main report
4. **Timeline Export**: Export timeline as CSV/JSON for external analysis
5. **Correlation Highlights**: Auto-detect related events (same IP across sources)
6. **Date Range Selector**: Filter timeline to specific date ranges
7. **Search Functionality**: Search events by IP, location, or keyword
8. **Copy Timeline**: Copy timeline content to clipboard

### Code Maintainability
- Method follows existing pattern (`_build_*()` structure)
- Uses InvestigationResult dataclass (no new dependencies)
- CSS follows existing dark theme conventions
- Modal pattern can be reused for other features (e.g., detailed anomaly view)
- Self-contained - no impact on other sections
- JavaScript functions are global scope for easy extension

## Related Documentation
- **Analyst Review**: Original feedback requesting timeline feature
- **Report Generator**: `report_generator.py` (main implementation)
- **Investigation Data**: `investigator.py` (dataclass definitions)

## Implementation Date
November 24, 2025 (initial inline version)
**Updated:** December 1, 2025 (modal implementation with IP badges and expanded data sources)

## Status
✅ **Complete** - Timeline modal successfully implemented with:
- Modal overlay presentation (non-intrusive)
- 7+ data source integration
- Dynamic IP badge system
- Keyboard shortcuts (ESC to close)
- Scrollable content for long timelines
- Professional dark theme styling
