# Story 4.3: Timeline Archiving

## Epic Reference
**Epic 4:** Case Timeline System

## User Story
As an **admin**,
I want **to archive completed cases and unarchive if needed**,
So that **I can organize active and completed case timelines**.

## Story Context

### Existing System Integration
- **Integrates with:** timelines table (status field from Story 4.1)
- **Technology:** Livewire Volt
- **Follows pattern:** Soft state change pattern
- **Touch points:** Timeline list views, timeline detail view

### Prerequisites (from Story 4.1)
The `timelines` table includes:
```php
$table->enum('status', ['active', 'archived'])->default('active');
```

### Files to Modify
- `app/Models/Timeline.php` - add archive/unarchive methods and scopes
- `resources/views/livewire/admin/timelines/show.blade.php` - add archive/unarchive button
- `resources/views/livewire/admin/timelines/index.blade.php` - add status filter dropdown
- `resources/views/livewire/client/timelines/index.blade.php` - separate archived timelines display

## Acceptance Criteria

### Archive Timeline
- [ ] Archive button on timeline detail view (admin only)
- [ ] Confirmation modal before archiving ("Are you sure?")
- [ ] Status changes to 'archived'
- [ ] Timeline remains visible to client (read-only as always)
- [ ] No further updates can be added (show disabled state with tooltip)
- [ ] Visual indicator shows archived status (badge + muted styling)

### Unarchive Timeline
- [ ] Unarchive button on archived timelines
- [ ] Status returns to 'active'
- [ ] Updates can be added again

### List Filtering
- [ ] Filter dropdown with options: Active (default), Archived, All
- [ ] Archived timelines shown in separate section in client view (below active)
- [ ] Bulk archive via checkbox selection + "Archive Selected" button
- [ ] Bulk archive shows count confirmation ("Archive 3 timelines?")

### Edge Cases
- [ ] Archiving already-archived timeline: No-op, no error shown
- [ ] Unarchiving already-active timeline: No-op, no error shown
- [ ] Adding update to archived timeline: Prevented with error message
- [ ] Bulk archive mixed selection: Skip already-archived, archive only active ones
- [ ] Empty bulk selection: "Archive Selected" button disabled

### Quality Requirements
- [ ] Audit log for status changes (action_type: 'archive' or 'unarchive')
- [ ] Bilingual labels (AR/EN for buttons, messages, filters)
- [ ] Feature tests covering all scenarios below

### Test Scenarios
```
tests/Feature/Timeline/TimelineArchivingTest.php
- test_admin_can_archive_active_timeline
- test_admin_can_unarchive_archived_timeline
- test_archiving_archived_timeline_is_noop
- test_unarchiving_active_timeline_is_noop
- test_cannot_add_update_to_archived_timeline
- test_client_can_view_archived_timeline
- test_admin_can_filter_by_active_status
- test_admin_can_filter_by_archived_status
- test_admin_can_filter_all_statuses
- test_bulk_archive_updates_multiple_timelines
- test_bulk_archive_skips_already_archived
- test_audit_log_created_on_archive
- test_audit_log_created_on_unarchive
- test_guest_cannot_archive_timeline
```

## Technical Notes

### Timeline Model Methods
```php
class Timeline extends Model
{
    public function archive(): void
    {
        $this->update(['status' => 'archived']);
    }

    public function unarchive(): void
    {
        $this->update(['status' => 'active']);
    }

    public function isArchived(): bool
    {
        return $this->status === 'archived';
    }

    public function scopeActive($query)
    {
        return $query->where('status', 'active');
    }

    public function scopeArchived($query)
    {
        return $query->where('status', 'archived');
    }
}
```

### Volt Component Actions
```php
public function archive(): void
{
    if ($this->timeline->isArchived()) {
        return;
    }

    $this->timeline->archive();

    AdminLog::create([
        'admin_id' => auth()->id(),
        'action_type' => 'archive',
        'target_type' => 'timeline',
        'target_id' => $this->timeline->id,
        'ip_address' => request()->ip(),
    ]);

    session()->flash('success', __('messages.timeline_archived'));
}

public function unarchive(): void
{
    if (!$this->timeline->isArchived()) {
        return;
    }

    $this->timeline->unarchive();

    AdminLog::create([
        'admin_id' => auth()->id(),
        'action_type' => 'unarchive',
        'target_type' => 'timeline',
        'target_id' => $this->timeline->id,
        'ip_address' => request()->ip(),
    ]);

    session()->flash('success', __('messages.timeline_unarchived'));
}

public function bulkArchive(array $ids): void
{
    Timeline::whereIn('id', $ids)->update(['status' => 'archived']);

    foreach ($ids as $id) {
        AdminLog::create([
            'admin_id' => auth()->id(),
            'action_type' => 'archive',
            'target_type' => 'timeline',
            'target_id' => $id,
            'ip_address' => request()->ip(),
        ]);
    }

    session()->flash('success', __('messages.timelines_archived', ['count' => count($ids)]));
}
```

## Definition of Done

- [ ] Archive button on timeline detail view works with confirmation modal
- [ ] Unarchive button on archived timelines works
- [ ] Update form disabled/hidden on archived timelines with clear messaging
- [ ] Status filter dropdown functional (Active/Archived/All)
- [ ] Bulk archive with checkbox selection works
- [ ] Visual indicators (badge + muted styling) display correctly
- [ ] Client can still view archived timelines in separate section
- [ ] Audit log entries created for all archive/unarchive actions
- [ ] All test scenarios in `tests/Feature/Timeline/TimelineArchivingTest.php` pass
- [ ] Code formatted with Pint

## Dependencies

- **Story 4.1:** Timeline creation (`docs/stories/story-4.1-timeline-creation.md`) - provides Timeline model and schema
- **Story 4.2:** Timeline updates (`docs/stories/story-4.2-timeline-updates-management.md`) - provides update blocking context

## Estimation

**Complexity:** Low
**Estimated Effort:** 2 hours