508 lines
27 KiB
Markdown
508 lines
27 KiB
Markdown
# TheNoiseClock - Product Requirements Document
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## Overview
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TheNoiseClock is a SwiftUI-based iOS application that combines a customizable digital clock display with white noise playback and alarm functionality. The app is designed with a dark theme and focuses on providing a clean, distraction-free interface for time display and ambient sound management.
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## Core Features
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### 1. Digital Clock Display
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- **Real-time clock** with automatic updates every second
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- **Customizable time format**: 12-hour or 24-hour display
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- **Optional seconds display** with toggle control
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- **AM/PM badge** for 12-hour format (optional)
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- **Segmented time display** with colon separators that adapt to orientation
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- **Dynamic scaling** that maximizes available screen space usage
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- **Portrait and landscape orientation support** with responsive font sizing
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- **Optimal font sizing** that uses all available space efficiently
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- **Immediate updates** on orientation changes and tab bar visibility changes
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- **Fixed-width digit rendering** to prevent layout shifts and jumping
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- **Individual digit views** with consistent spacing and alignment
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- **Font customization** with family, weight, and design selection
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- **Dynamic dot sizing** that matches selected font weight
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- **Safe area handling** with proper Dynamic Island avoidance
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- **Full-screen mode** with status bar hiding and tab bar expansion
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- **Orientation-aware spacing** for optimal layout in all orientations
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### 2. Clock Customization
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- **Color customization**: User-selectable digit colors with color picker
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- **Background color**: Customizable background with color picker
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- **Glow effects**: Adjustable glow intensity (0-100%)
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- **Size control**: Manual scaling (0-100%) or auto-fit mode
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- **Opacity controls**: Separate opacity for clock digits and overlays
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- **Random color mode**: Automatically changes digit color every minute
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- **Preset themes**: Quick "Night" (black/white) and "Day" (white/black) themes
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- **Font family selection**: Choose from System, San Francisco, Monaco, Courier fonts
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- **Font weight options**: Ultra Light, Thin, Light, Regular, Medium, Semibold, Bold, Heavy, Black
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- **Font design choices**: Default, Serif, Rounded, Monospaced designs
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- **Live font preview**: Real-time preview of font changes in settings
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- **Font persistence**: All font settings saved and restored automatically
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### 3. Display Modes
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- **Normal mode**: Standard interface with navigation and settings
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- **Display mode**: Full-screen clock activated by long-press (0.6 seconds)
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- **Automatic UI hiding**: Tab bar and navigation elements hide in display mode
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- **Smooth transitions**: Animated transitions between modes
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- **Status bar control**: Status bar automatically hidden in full-screen mode
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- **Safe area expansion**: Clock expands into tab bar area when hidden
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- **Dynamic Island awareness**: Proper spacing to avoid Dynamic Island overlap
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- **Orientation handling**: Full-screen mode works in both portrait and landscape
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- **Keep awake functionality**: Optional screen wake lock to prevent device sleep in display mode
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- **Battery optimization**: Wake lock automatically disabled when exiting display mode
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### 4. Information Overlays
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- **Battery level display**: Real-time battery percentage with icon
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- **Date display**: Current date in "d MMMM EEE" format (e.g., "7 September Mon")
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- **Overlay opacity control**: Independent opacity for battery/date overlays
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- **Automatic updates**: Battery and date update in real-time
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### 5. White Noise Player
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- **Multiple sound options**:
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- White Noise (`white-noise.mp3`)
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- Heavy Rain White Noise (`heavy-rain-white-noise.mp3`)
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- Fan White Noise (`fan-white-noise-heater-303207.mp3`)
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- **Continuous playback**: Sounds loop indefinitely
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- **Simple controls**: Play/Stop button with visual feedback
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- **Sound selection**: Dropdown picker for sound selection
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- **JSON-based configuration**: Sound definitions loaded from external configuration
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- **Bundle organization**: Sounds organized in category-based bundles
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- **Shared audio player**: Singleton pattern prevents audio conflicts
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- **Background audio support**: Continues playing when app is backgrounded
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- **Audio interruption handling**: Automatically resumes after phone calls or route changes
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- **Wake lock integration**: Prevents device sleep while audio is playing
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- **Bluetooth audio support**: Works with AirPods and other Bluetooth audio devices
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### 6. Advanced Alarm System
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- **Multiple alarms**: Create and manage unlimited alarms
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- **Rich alarm editor**: Full-featured alarm creation and editing interface
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- **Time selection**: Wheel-style date picker with optimized font sizing for maximum readability
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- **Dynamic alarm sounds**: Configurable alarm sounds loaded from JSON configuration
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- **Sound preview**: Play/stop functionality for testing alarm sounds before selection
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- **Sound organization**: Alarm sounds organized in bundles with categories
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- **Custom labels**: User-defined alarm names and descriptions
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- **Repeat schedules**: Set alarms to repeat on specific weekdays or daily
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- **Sound selection**: Choose from extensive system sounds with live preview
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- **Volume control**: Adjustable alarm volume (0-100%)
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- **Vibration settings**: Enable/disable vibration for each alarm
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- **Snooze functionality**: Configurable snooze duration (5, 7, 8, 9, 10, 15, 20 minutes)
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- **Smart notifications**: Automatic scheduling for one-time and repeating alarms
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- **Enable/disable toggles**: Individual alarm control with instant feedback
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- **Notification integration**: Uses iOS UserNotifications framework with proper scheduling
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- **Persistent storage**: Alarms saved to UserDefaults with backward compatibility
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- **Alarm management**: Add, edit, delete, and duplicate alarms
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- **Next trigger preview**: Shows when the next alarm will fire
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- **Responsive time picker**: Font sizes adapt to available space and orientation
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## Advanced Clock Display Features
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### Fixed-Width Digit Rendering
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- **Individual digit views**: Each digit (0-9) rendered in its own view component
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- **Consistent spacing**: All digits use the width of the widest digit ("8") for uniform layout
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- **Height consistency**: All digits use the height of the tallest digit ("8") to prevent vertical jumping
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- **Layout stability**: No shifting or jumping when time changes (e.g., "11" to "12")
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- **Perfect centering**: Each digit is centered within its fixed-width container
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### Font Customization System
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- **Font family selection**: System, San Francisco, Monaco, Courier options
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- **Weight variations**: 9 weight options from Ultra Light to Black
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- **Design choices**: Default, Serif, Rounded, Monospaced designs
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- **Live preview**: Real-time font preview in settings interface
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- **UIFont integration**: Proper font measurement for accurate sizing
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- **Weight-based dot scaling**: Colon dots automatically scale with font weight
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### Dynamic Layout and Sizing
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- **GeometryReader integration**: Real-time container size detection
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- **Orientation-aware calculations**: Different sizing algorithms for portrait vs landscape
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- **Safe area handling**: Proper Dynamic Island avoidance and tab bar expansion
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- **Maximum space utilization**: Font sizes calculated to use all available space
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- **Responsive updates**: Immediate recalculation on orientation or layout changes
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### Advanced Spacing and Alignment
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- **Orientation-aware spacing**: Different spacing values for portrait vs landscape
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- **Consistent segment spacing**: Uniform spacing between hours, minutes, seconds
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- **Dot weight matching**: Colon dots scale with selected font weight
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- **Overflow prevention**: Spacing calculations prevent content clipping
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- **Perfect centering**: All elements centered both horizontally and vertically
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### Full-Screen Mode Enhancements
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- **Status bar hiding**: Automatic status bar hiding in full-screen mode
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- **Tab bar expansion**: Clock expands into tab bar area when hidden
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- **Safe area management**: Proper handling of Dynamic Island and other safe areas
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- **Smooth transitions**: Animated transitions between normal and full-screen modes
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- **Orientation support**: Full-screen mode works seamlessly in all orientations
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## Technical Architecture
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### Code Organization Principles
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**TOP PRIORITY:** The codebase must be built with the following architectural principles from the beginning:
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- **True Separation of Concerns:**
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- Many small files with focused responsibilities
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- Each module/class should have a single, well-defined purpose
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- Avoid monolithic files with mixed responsibilities
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- **View Structure Requirements:**
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- **Single View Per File:** Each SwiftUI view must be in its own file
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- **No Nested Views:** Views should not contain other view structs/classes in the same file
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- **Component Extraction:** Complex views must be broken down into smaller, reusable components
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- **Clean Main Views:** Main view files should only contain the primary view logic and helper methods
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- **Component Organization:** Supporting views should be placed in appropriate `Components/` subdirectories
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- **Constants and Enums:**
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- Create constants, enums, and configuration objects to avoid duplicate code or values
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- Centralize magic numbers, strings, and configuration values
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- Use enums for type safety and clarity
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- **Readability and Maintainability:**
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- Code should be self-documenting with clear naming conventions
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- Easy to understand, extend, and refactor
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- Consistent patterns throughout the codebase
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- **Extensibility:**
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- Design for future growth and feature additions
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- Modular architecture that allows easy integration of new components
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- Clear interfaces between modules
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- **Refactorability:**
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- Code structure should make future refactoring straightforward
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- Minimize coupling between components
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- Use dependency injection and abstraction where appropriate
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These principles are fundamental to the project's long-term success and must be applied consistently throughout development.
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### App Structure
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- **Main App**: `TheNoiseClockApp.swift` - Entry point with WindowGroup
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- **Tab-based navigation**: Three main tabs (Clock, Alarms, Noise)
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- **SwiftUI framework**: Modern declarative UI framework with iOS 18+ and iOS 26 features
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- **Dark theme**: Preferred color scheme set to dark
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### Data Models
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- **ClockStyle**: @Observable class for clock customization settings
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- Time format preferences (24-hour, seconds, AM/PM)
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- Visual settings (colors, glow, scale, opacity)
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- Overlay settings (battery, date, opacity)
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- Background settings
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- Font customization (family, weight, design)
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- Color caching for performance optimization
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- Persistent storage with JSON encoding/decoding
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- **Alarm**: Codable struct for comprehensive alarm data
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- UUID identifier
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- Time and enabled state
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- Custom label and description
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- Repeat schedule (weekdays)
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- Sound name with volume control
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- Vibration settings
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- Snooze duration configuration
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- **Sound**: Simple struct for noise file management
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- Display name and file name
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- **LegacyAlarm**: Backward compatibility struct for old alarm data
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### Data Persistence
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- **AppStorage**: ClockStyle settings persisted as JSON
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- **UserDefaults**: Alarm data persisted as JSON
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- **Bundle resources**: Audio files stored in app bundle
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### Audio System
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- **AVFoundation**: AVAudioPlayer for noise playback
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- **@Observable NoisePlayer**: Modern state management with preloading
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- **Looping playback**: Infinite loop for ambient sounds
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- **Audio session management**: Proper audio session configuration with background support
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- **Error handling**: Graceful handling of missing audio files
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- **AlarmTonePlayer**: Dedicated player for alarm sound previews
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- **Background audio**: Continues playback when app is backgrounded
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- **Interruption handling**: Automatic resume after phone calls and route changes
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- **Wake lock integration**: Prevents device sleep during audio playback
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### Notification System
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- **UserNotifications**: iOS notification framework
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- **Permission handling**: Automatic permission requests
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- **Smart scheduling**: One-time and repeating alarm support
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- **Calendar triggers**: Precise alarm scheduling with weekday support
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- **Sound customization**: System sound selection with volume control
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- **Multiple notifications**: Support for repeating alarms with unique identifiers
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### Wake Lock System
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- **WakeLockService**: Singleton service for managing screen wake lock
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- **Display mode integration**: Automatically enables wake lock in full-screen display mode
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- **Audio integration**: Enables wake lock during audio playback to prevent device sleep
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- **Battery optimization**: Automatic wake lock management with proper cleanup
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- **Timer-based maintenance**: Periodic wake lock refresh to ensure continuous operation
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- **State management**: Tracks wake lock status and provides toggle functionality
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## User Interface Design
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### Navigation
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- **TabView**: Three-tab interface (Clock, Alarms, Noise)
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- **NavigationStack**: Modern navigation with back button support
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- **Navigation destinations**: Deep linking for alarm editing
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- **Toolbar integration**: Settings and add buttons in navigation bars
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- **Sheet presentations**: Modal settings and alarm creation
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### Visual Design
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- **Rounded corners**: Modern iOS design language
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- **Modern animations**: iOS 18+ smooth and bouncy animations
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- **Color consistency**: Blue accent color throughout
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- **Accessibility**: Proper labels and hidden decorative elements
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- **Form-based layouts**: Organized sections for settings and alarm editing
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- **Interactive controls**: Toggles, sliders, color pickers, and date pickers
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### Settings Interface
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- **Form-based layout**: Organized sections for different setting categories
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- **Interactive controls**: Toggles, sliders, color pickers
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- **Real-time updates**: Changes apply immediately
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- **Sheet presentation**: Modal settings with detents
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## File Structure and Organization
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### Recommended File Organization
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Following the separation of concerns principle, the codebase should be organized into focused, single-responsibility files:
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```
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TheNoiseClock/
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├── App/
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│ ├── TheNoiseClockApp.swift # App entry point and configuration
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│ └── ContentView.swift # Main tab navigation coordinator
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├── Core/
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│ ├── Constants/
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│ │ ├── AppConstants.swift # App-wide constants and configuration
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│ │ ├── UIConstants.swift # UI-specific constants (colors, sizes, etc.)
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│ │ └── AudioConstants.swift # Audio-related constants
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│ ├── Extensions/
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│ │ ├── Color+Extensions.swift # Color utilities and extensions
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│ │ ├── Date+Extensions.swift # Date formatting and utilities
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│ │ └── View+Extensions.swift # Common view modifiers and responsive utilities
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│ └── Utilities/
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│ ├── ColorUtils.swift # Color manipulation utilities
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│ ├── FontUtils.swift # Font sizing, typography, and customization utilities
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│ └── NotificationUtils.swift # Notification helper functions
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├── Models/
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│ ├── ClockStyle.swift # Clock customization data model
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│ ├── Alarm.swift # Alarm data model
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│ ├── Sound.swift # Sound data model
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│ └── LegacyAlarm.swift # Backward compatibility model
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├── ViewModels/
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│ ├── ClockViewModel.swift # Clock display logic and state
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│ ├── AlarmViewModel.swift # Alarm management logic
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│ └── NoiseViewModel.swift # Audio playback state management
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├── Views/
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│ ├── Clock/
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│ │ ├── ClockView.swift # Main clock display view
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│ │ ├── ClockSettingsView.swift # Clock customization interface
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│ │ └── Components/
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│ │ ├── TimeDisplayView.swift # Advanced segmented time display with fixed-width digits
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│ │ ├── BatteryOverlayView.swift # Battery level overlay
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│ │ ├── DateOverlayView.swift # Date display overlay
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│ │ └── TopOverlayView.swift # Combined overlay container
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│ ├── Alarms/
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│ │ ├── AlarmView.swift # Main alarm management view
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│ │ ├── AddAlarmView.swift # Alarm creation interface
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│ │ └── Components/
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│ │ ├── AlarmRowView.swift # Individual alarm row component
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│ │ ├── TimePickerSection.swift # Time selection component
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│ │ ├── TimeUntilAlarmSection.swift # Time calculation display
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│ │ ├── SoundSelectionView.swift # Sound selection with preview
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│ │ ├── LabelEditView.swift # Label editing interface
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│ │ └── SnoozeSelectionView.swift # Snooze duration selection
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│ └── Noise/
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│ ├── NoiseView.swift # Main white noise player interface
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│ └── Components/
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│ ├── SoundPickerView.swift # Sound selection component
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│ └── SoundControlView.swift # Playback controls component
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├── Services/
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│ ├── NoisePlayer.swift # Audio playback service with background support
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│ ├── AlarmService.swift # Alarm management service
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│ ├── NotificationService.swift # Notification handling service
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│ └── WakeLockService.swift # Screen wake lock management service
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└── Resources/
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├── sounds.json # Sound configuration and definitions
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├── Ambient.bundle/ # Ambient sound category
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│ └── white-noise.mp3
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├── Nature.bundle/ # Nature sound category
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│ └── heavy-rain-white-noise.mp3
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├── Mechanical.bundle/ # Mechanical sound category
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│ └── fan-white-noise-heater.mp3
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├── AlarmSounds.bundle/ # Alarm sound category
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│ ├── digital-alarm.mp3
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│ ├── iphone-alarm.mp3
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│ ├── classic-alarm.mp3
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│ ├── beep-alarm.mp3
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│ ├── siren-alarm.mp3
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│ └── voice-wakeup.mp3
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└── Assets.xcassets/
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└── [Asset catalogs]
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```
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### File Naming Conventions
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- **Views**: Use descriptive names ending in `View` (e.g., `ClockView`, `AlarmRowView`)
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- **ViewModels**: End with `ViewModel` (e.g., `ClockViewModel`, `AlarmViewModel`)
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- **Services**: End with `Service` (e.g., `AlarmService`, `NotificationService`)
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- **Models**: Use noun names (e.g., `Alarm`, `Sound`, `ClockStyle`)
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- **Extensions**: Use `Type+Extensions` format (e.g., `Color+Extensions`)
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- **Constants**: Use descriptive names ending in `Constants` (e.g., `AppConstants`)
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### Code Organization Best Practices
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- **Single Responsibility**: Each file should have one clear purpose
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- **Dependency Injection**: Use protocols and dependency injection for testability
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- **Protocol-Oriented Design**: Define protocols for services and data sources
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- **Error Handling**: Centralized error types and handling patterns
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- **Testing**: Separate test targets with comprehensive coverage
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### Documentation Maintenance Requirements
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**CRITICAL:** The PRD must be kept up-to-date with all code changes. The following procedures are mandatory:
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#### Automatic PRD Updates
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- **Every code change** that affects architecture, features, or file structure **MUST** include a corresponding PRD update
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- **AI Assistant Responsibility**: When making code changes, the AI assistant must automatically:
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1. **Identify PRD sections** that need updating based on the changes made
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2. **Update relevant sections** without being asked
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3. **Add new features** to the appropriate feature sections
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4. **Update file structure** when new files or components are created
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5. **Document new requirements** or architectural decisions
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6. **Maintain consistency** between code and documentation
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#### PRD Update Triggers
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The following changes **automatically require** PRD updates:
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- **New files or components** → Update file structure section
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- **New features or functionality** → Update core features section
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- **Architectural changes** → Update code organization principles
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- **New services or models** → Update technical architecture
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- **UI/UX changes** → Update user interaction sections
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- **Configuration changes** → Update technical requirements
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- **Bundle or resource changes** → Update resources section
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#### Documentation Standards
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- **Real-time updates**: PRD updates should happen in the same conversation as code changes
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- **Comprehensive coverage**: All aspects of changes must be documented
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- **Version consistency**: Code and documentation must always be in sync
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- **No manual requests**: Users should not need to ask for PRD updates
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## Key User Interactions
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### Clock Tab
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1. **View time**: Real-time clock display
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2. **Access settings**: Tap gear icon in navigation bar
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3. **Enter display mode**: Long-press anywhere on clock (0.6 seconds)
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4. **Exit display mode**: Long-press again to return to normal mode
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### Settings
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1. **Time format**: Toggle 24-hour, seconds, AM/PM display
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2. **Appearance**: Adjust colors, glow, size, opacity
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3. **Display**: Control keep awake functionality for display mode
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4. **Overlays**: Control battery and date display
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5. **Background**: Set background color and use presets
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### Alarms Tab
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1. **View alarms**: List of all created alarms with labels and repeat schedules
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2. **Add alarm**: Tap + button to create new alarm with full editor
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3. **Edit alarm**: Tap any alarm to open comprehensive editor
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4. **Toggle alarm**: Use switch to enable/disable
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5. **Delete alarm**: Swipe to delete or use delete button in editor
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6. **Alarm editor features**:
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- Time picker with next trigger preview
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- Custom label editing
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- Repeat schedule selection
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- Sound picker with live preview
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- Volume and vibration controls
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- Snooze duration settings
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### Noise Tab
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1. **Select sound**: Choose from dropdown menu
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2. **Play/Stop**: Single button to control playback
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3. **Continuous playback**: Sounds loop until stopped
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## Technical Requirements
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### iOS Compatibility
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- **Minimum iOS version**: iOS 18.0+ (Latest SwiftUI features and performance optimizations)
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- **Target devices**: iPhone and iPad with full adaptive layout support
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- **Orientation support**: Portrait and landscape with dynamic type support
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- **Accessibility**: Full VoiceOver and Dynamic Type support
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### Modern iOS Technology Stack
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- **SwiftUI**: Latest declarative UI framework with iOS 18+ and iOS 26 features
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- **Observation Framework**: Modern @Observable pattern for state management
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- **SwiftData**: Advanced data persistence with iOS 18+ SwiftData features
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- **Async/Await**: Modern concurrency patterns throughout
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- **Structured Concurrency**: Task groups and actors for complex operations
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- **Swift 6**: Latest language features and safety improvements
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- **iOS 26 Features**: Latest platform capabilities where available
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### Dependencies
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- **SwiftUI**: Native iOS UI framework with latest features
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- **AVFoundation**: Audio playback with modern async patterns and background support
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- **UserNotifications**: Alarm notifications with rich content support
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- **Combine**: Timer publishers and reactive programming
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|
- **Observation**: Modern state management with @Observable
|
|
- **Foundation**: Core system frameworks and utilities
|
|
- **UIKit**: UIFont integration for precise text measurement and font customization
|
|
- **UIApplication**: Screen wake lock management and idle timer control
|
|
|
|
### Font and Typography Utilities
|
|
- **FontUtils.optimalFontSize()**: Calculates optimal font size for portrait orientation
|
|
- **FontUtils.maximumStretchedFontSize()**: Calculates maximum font size for stretched mode
|
|
- **FontUtils.customFont()**: Creates SwiftUI Font with custom family, weight, and design
|
|
- **FontUtils.customUIFont()**: Creates UIFont for precise text measurement
|
|
- **FontUtils.weightMultiplier()**: Calculates dot size multiplier based on font weight
|
|
- **FontUtils.calculateMaxTextWidth()**: Measures text width for fixed-width calculations
|
|
- **FontUtils.calculateMaxTextHeight()**: Measures text height for consistent digit sizing
|
|
- **FontUtils.timePickerFontSize()**: Optimized font sizing for DatePicker components
|
|
|
|
### Performance Considerations
|
|
- **Smart timer management**: Conditional timers based on settings
|
|
- **Debounced persistence**: Batched UserDefaults writes
|
|
- **Memory management**: Proper cleanup of audio players
|
|
- **Battery optimization**: Efficient update mechanisms
|
|
- **Color caching**: Avoid repeated hex-to-Color conversions
|
|
- **Dictionary lookups**: O(1) alarm access instead of linear search
|
|
- **Smooth animations**: Hardware-accelerated transitions
|
|
- **Preloaded audio**: Instant sound playback
|
|
- **Font measurement caching**: Efficient text size calculations
|
|
- **Fixed-width calculations**: Pre-calculated digit dimensions for consistent layout
|
|
- **Orientation-aware sizing**: Optimized font sizing algorithms for different orientations
|
|
|
|
## Future Enhancement Opportunities
|
|
- **Additional sound types**: More white noise variants
|
|
- **Sleep timer**: Auto-stop noise after specified time
|
|
- **Widget support**: Home screen clock widget
|
|
- **Apple Watch companion**: Watch app for quick time check
|
|
- **In-app purchases**: Premium sound packs
|
|
- **Custom sounds**: User-imported audio files
|
|
- **Multiple time zones**: World clock functionality
|
|
- **Alarm categories**: Group alarms by type (work, sleep, etc.)
|
|
- **Smart alarms**: Gradual volume increase
|
|
- **Weather integration**: Weather-based alarm sounds
|
|
- **Health integration**: Sleep tracking integration
|
|
|
|
## Development Notes
|
|
|
|
### Project Information
|
|
- **Created**: September 7, 2025
|
|
- **Framework**: SwiftUI with iOS 18.0+ target (latest stable features)
|
|
- **Architecture**: Modern SwiftUI with @Observable pattern and MVVM
|
|
- **Testing**: Comprehensive unit and UI test targets with Swift Testing
|
|
- **Version control**: Git repository with feature branch workflow
|
|
- **Performance**: Optimized for battery life and smooth operation
|
|
- **Modern iOS**: Uses latest iOS 18+ and iOS 26 features with Swift 6 language improvements
|
|
|
|
### Modern iOS Development Practices
|
|
- **Swift 6**: Latest language features including strict concurrency checking
|
|
- **Async/Await**: Modern concurrency patterns throughout the codebase
|
|
- **Observation Framework**: @Observable for reactive state management
|
|
- **SwiftUI Navigation**: Latest NavigationStack and navigation APIs with iOS 18+ features
|
|
- **Accessibility**: Full VoiceOver and Dynamic Type support with iOS 26 enhancements
|
|
- **Adaptive Layout**: Support for all device sizes and orientations
|
|
- **Performance**: Optimized for 120Hz ProMotion displays and iOS 26 performance improvements
|
|
- **Memory Management**: ARC with proper weak references and cleanup
|
|
- **Error Handling**: Result types and proper error propagation
|
|
- **Testing**: Swift Testing framework for modern test writing
|
|
- **iOS 26 Integration**: Latest platform features and capabilities where applicable
|
|
|
|
### Code Quality Standards
|
|
- **SwiftLint**: Automated code style enforcement
|
|
- **Documentation**: Comprehensive inline documentation with DocC
|
|
- **Type Safety**: Leverage Swift's type system for compile-time safety
|
|
- **Protocol-Oriented**: Use protocols for abstraction and testability
|
|
- **Dependency Injection**: Constructor injection for better testability
|
|
- **SOLID Principles**: Single responsibility, open/closed, dependency inversion
|