# AI Implementation Context

This file summarizes project-specific context, architecture, and conventions to speed up future AI work.

## Project Summary

BusinessCard is a SwiftUI app for building and sharing digital business cards with QR codes. It includes iOS screens for cards, sharing, customization, contact tracking, and widget previews, plus a watchOS companion to show a default card QR code.

## Key Constraints

- iOS 26+, watchOS 12+, Swift 6.2.
- SwiftUI with `@Observable` classes and `@MainActor`.
- Protocol‑oriented architecture is prioritized.
- Clean Architecture with separation of concerns.
- One public type per file, keep files under 300 lines.
- No UIKit unless explicitly requested.
- String Catalogs only (`.xcstrings`).
- No magic numbers in views; use Bedrock's `Design` constants.
- Uses **Bedrock** package for shared design system and utilities.

## Core Data Flow

- `AppState` owns:
  - `CardStore` (cards and selection)
  - `ContactsStore` (contact list + search)
  - `ShareLinkService` (share URLs)
- **SwiftData** with CloudKit for persistence and sync.
- **App Groups** for iOS-Watch data sharing.
- Views read state via environment and render UI only.

## Dependencies

### Bedrock Package

Located at `/Frameworks/Bedrock` (local package). Provides:

- `Design.Spacing`, `Design.CornerRadius`, `Design.Opacity`, etc.
- `QRCodeGenerator` and `QRCodeImageView` for QR codes
- Reusable settings components

App-specific extensions are in `Design/DesignConstants.swift`:
- `Design.CardSize` - card dimensions, avatar, QR sizes
- `Design.Shadow.offsetNone` - zero offset extension
- `Color.AppBackground`, `Color.CardPalette`, `Color.AppAccent`, `Color.AppText`

## Important Files

### Models

- `Models/BusinessCard.swift` — SwiftData model with:
  - Basic fields: name, role, company, email, phone, website, location
  - Rich fields: pronouns, bio, social links (LinkedIn, Twitter, Instagram, etc.)
  - Custom links: 2 slots for custom URLs
  - Photo: `photoData` stored with `@Attribute(.externalStorage)`
  - Computed: `theme`, `layoutStyle`, `vCardPayload`, `hasSocialLinks`
  
- `Models/Contact.swift` — SwiftData model with:
  - Basic fields: name, role, company
  - Annotations: notes, tags (comma-separated), followUpDate, whereYouMet
  - Received cards: isReceivedCard, email, phone
  - Photo: `photoData`
  - Computed: `tagList`, `hasFollowUp`, `isFollowUpOverdue`
  - Static: `fromVCard(_:)` parser

- `Models/CardTheme.swift` — card theme palette
- `Models/CardLayoutStyle.swift` — stacked/split/photo
- `Models/AppTab.swift` — tab bar enum

### Protocols (POP)

- `Protocols/BusinessCardProviding.swift` — card selection interface
- `Protocols/ContactTracking.swift` — contact management interface
- `Protocols/ShareLinkProviding.swift` — share URL generation interface

### State

- `State/AppState.swift` — central state container
- `State/CardStore.swift` — card CRUD, selection, watch sync
- `State/ContactsStore.swift` — contacts, search, received cards

### Services

- `Services/ShareLinkService.swift` — share URL helpers
- `Services/WatchSyncService.swift` — App Group sync to watch

### Views

Main screens:
- `Views/RootTabView.swift` — tabbed shell
- `Views/CardsHomeView.swift` — hero + card carousel
- `Views/ShareCardView.swift` — QR + share actions + track share
- `Views/CustomizeCardView.swift` — theme/layout controls
- `Views/ContactsView.swift` — contact list with sections
- `Views/WidgetsView.swift` — widget preview mockups

Feature views:
- `Views/BusinessCardView.swift` — card display with layouts
- `Views/CardEditorView.swift` — create/edit cards with PhotosPicker
- `Views/ContactDetailView.swift` — full contact view with annotations
- `Views/QRScannerView.swift` — camera-based QR scanner
- `Views/QRCodeView.swift` — QR code image generator

Reusable components (in `Views/Components/`):
- `AvatarBadgeView.swift` — circular avatar with photo or icon
- `IconRowView.swift` — icon + text row for details
- `LabelBadgeView.swift` — small badge labels
- `ActionRowView.swift` — generic action row with chevron

Sheets (in `Views/Sheets/`):
- `RecordContactSheet.swift` — track share recipient

Small utilities:
- `Views/EmptyStateView.swift` — empty state placeholder
- `Views/PrimaryActionButton.swift` — styled action button
- `Views/HeroBannerView.swift` — home page banner
- `Views/CardCarouselView.swift` — card scroll carousel
- `Views/WidgetsCalloutView.swift` — widget promotion callout

### Design + Localization

- `Design/DesignConstants.swift` — extends Bedrock
- `Resources/Localizable.xcstrings` — string catalog
- `Localization/String+Localization.swift` — string helpers

### watchOS

- `BusinessCardWatch/BusinessCardWatchApp.swift`
- `BusinessCardWatch/Views/WatchContentView.swift`
- `BusinessCardWatch/State/WatchCardStore.swift`
- `BusinessCardWatch/Models/WatchCard.swift`
- `BusinessCardWatch/Resources/Localizable.xcstrings`

## File Guidelines

### Size Limits
- Main views: aim for under 300 lines
- Extract reusable sub-views to `Components/`
- Extract sheets/modals to `Sheets/`
- Private structs in same file OK if under 50 lines

### Current File Sizes
| File | Lines | Status |
|------|-------|--------|
| CardEditorView | ~420 | Complex form, acceptable |
| QRScannerView | ~310 | Camera + parsing, acceptable |
| BusinessCardView | ~245 | Multiple layouts, acceptable |
| ShareCardView | ~235 | Good |
| ContactDetailView | ~235 | Good |
| ContactsView | ~220 | Good |
| CustomizeCardView | ~170 | Good |
| All others | <110 | Good |

## Localization

- All user-facing strings are in `.xcstrings`.
- Supported locales: en, es‑MX, fr‑CA.
- Use `String.localized("Key")` for non-Text strings.

## Testing

- `BusinessCardTests/BusinessCardTests.swift` covers:
  - vCard payload formatting
  - Card CRUD operations
  - Contact search and filtering
  - Social links detection
  - Contact notes/tags
  - Follow-up status
  - vCard parsing for received cards

## Known Stubs / TODOs

- Apple Wallet and NFC flows are alert-only placeholders.
- Share URLs are sample placeholders.
- Widget previews are not WidgetKit extensions.
- See `ROADMAP.md` for full feature status.

## If You Extend The App

1. Add new strings to the String Catalogs.
2. Use `Design.*` from Bedrock for spacing, opacity, etc.
3. Add app-specific constants to `DesignConstants.swift`.
4. Keep view logic UI-only; push business logic to state classes.
5. Prefer protocols for new capabilities.
6. Add unit tests for new model logic.
7. Update `ROADMAP.md` when adding features.
8. **Keep files under 300 lines** — extract components when needed.
9. **No duplicate code** — check for existing components first.
10. **One public type per file** — private helpers OK if small.