calypso/docs/alpha/srs/SRS-11-User-Interface.md

SRS-11: User Interface & Experience

1. Overview

User Interface & Experience module defines the requirements for the web-based user interface, navigation, responsiveness, and user experience.

2. Functional Requirements

2.1 Layout & Navigation

FR-UI-001: System shall provide a consistent layout structure

• Components: Header, sidebar navigation, main content area, footer
• Responsive: Adapt to different screen sizes

FR-UI-002: System shall provide sidebar navigation

• Features: Collapsible sidebar, active route highlighting, icon-based navigation
• Items: Dashboard, Storage, Object Storage, Shares, Snapshots, Tape, iSCSI, Backup, Terminal, Monitoring, Alerts, System, IAM

FR-UI-003: System shall provide breadcrumb navigation

• Features: Hierarchical navigation path, clickable breadcrumbs

FR-UI-004: System shall provide user profile menu

• Features: User info, logout option, profile link

2.2 Authentication UI

FR-UI-005: System shall provide login page

• Components: Username input, password input, login button, error messages
• Validation: Real-time validation feedback

FR-UI-006: System shall handle authentication errors

• Display: Clear error messages for invalid credentials

FR-UI-007: System shall redirect authenticated users

• Action: Redirect to dashboard if already logged in

2.3 Dashboard

FR-UI-008: System shall provide system overview dashboard

• Components: System status, metrics cards, recent activity, quick actions
• Refresh: Auto-refresh metrics

FR-UI-009: System shall display system health indicators

• Components: Health status badge, component status indicators

2.4 Data Display

FR-UI-010: System shall provide table views

• Features: Sorting, filtering, pagination, search
• Responsive: Mobile-friendly table layout

FR-UI-011: System shall provide card-based layouts

• Features: Status indicators, quick actions, hover effects

FR-UI-012: System shall provide master-detail views

• Features: List on left, details on right, selection highlighting

2.5 Forms & Modals

FR-UI-013: System shall provide form inputs

• Types: Text, number, select, checkbox, radio, textarea, file
• Validation: Real-time validation, error messages

FR-UI-014: System shall provide modal dialogs

• Features: Overlay, close button, form submission, loading states

FR-UI-015: System shall provide confirmation dialogs

• Features: Warning messages, confirm/cancel actions

2.6 Feedback & Notifications

FR-UI-016: System shall provide loading states

• Components: Spinners, skeleton loaders, progress indicators

FR-UI-017: System shall provide success notifications

• Display: Toast notifications, inline success messages

FR-UI-018: System shall provide error notifications

• Display: Toast notifications, inline error messages, error pages

FR-UI-019: System shall provide warning notifications

• Display: Warning dialogs, warning badges

2.7 Charts & Visualizations

FR-UI-020: System shall provide metric charts

• Types: Line charts, bar charts, pie charts, gauge charts
• Libraries: Recharts integration

FR-UI-021: System shall provide real-time chart updates

• Refresh: Auto-refresh chart data

2.8 Responsive Design

FR-UI-022: System shall be responsive

• Breakpoints: Mobile (< 640px), Tablet (640px - 1024px), Desktop (> 1024px)
• Adaptation: Layout adjustments, menu collapse, touch-friendly controls

FR-UI-023: System shall support dark theme

• Features: Dark color scheme, theme persistence

2.9 Accessibility

FR-UI-024: System shall support keyboard navigation

• Features: Tab navigation, keyboard shortcuts, focus indicators

FR-UI-025: System shall provide ARIA labels

• Features: Screen reader support, semantic HTML

3. Design Requirements

3.1 Color Scheme

• Primary: #137fec (Blue)
• Background Dark: #101922
• Surface Dark: #18232e
• Border Dark: #2a3b4d
• Text Primary: White
• Text Secondary: #92adc9
• Success: Green (#10b981)
• Warning: Yellow (#f59e0b)
• Error: Red (#ef4444)

3.2 Typography

• Font Family: Manrope (Display), System fonts (Body)
• Headings: Bold, various sizes
• Body: Regular, readable sizes

3.3 Spacing

• Consistent: 4px base unit
• Padding: 16px, 24px, 32px
• Gap: 8px, 16px, 24px, 32px

3.4 Components

• Buttons: Primary, secondary, outline, danger variants
• Cards: Rounded corners, borders, shadows
• Inputs: Rounded, bordered, focus states
• Badges: Small, colored, with icons

4. User Experience Requirements

4.1 Performance

• Page Load: < 2 seconds initial load
• Navigation: < 100ms route transitions
• API Calls: Loading states during requests

4.2 Usability

• Intuitive: Clear navigation, obvious actions
• Consistent: Consistent patterns across pages
• Feedback: Immediate feedback for user actions
• Error Handling: Clear error messages and recovery options

4.3 Discoverability

• Help: Tooltips, help text, documentation links
• Search: Global search functionality (future)
• Guides: Onboarding flow (future)

5. Technology Stack

5.1 Frontend Framework

• React 18 with TypeScript
• Vite for build tooling
• React Router for navigation

5.2 Styling

• TailwindCSS for utility-first styling
• Custom CSS for specific components
• Dark theme support

5.3 State Management

• Zustand for global state
• TanStack Query for server state
• React hooks for local state

5.4 UI Libraries

• Lucide React for icons
• Recharts for charts
• Custom components

6. Browser Support

• Chrome/Edge: Latest 2 versions
• Firefox: Latest 2 versions
• Safari: Latest 2 versions

7. Error Handling

• Network errors: Retry mechanism, error messages
• Validation errors: Inline error messages
• Server errors: Error pages, error notifications
• 404 errors: Not found page