📱 iOS Offline-First Framework

🏆 Professional iOS Offline-First Framework

📱 Seamless Offline & Online Experience

🔄 Intelligent Data Synchronization

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📋 Table of Contents

• 🚀 Overview
• ✨ Key Features
• 📦 Data Persistence
• 🔄 Synchronization
• ⚡ Conflict Resolution
• 📱 Offline Capabilities
• 🚀 Quick Start
• 📱 Usage Examples
• 🔧 Configuration
• 📚 Documentation
• 🤝 Contributing
• 📄 License
• 🙏 Acknowledgments
• 📊 Project Statistics
• 🌟 Stargazers

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🚀 Overview

iOS Offline-First Framework is the most advanced, comprehensive, and professional offline-first solution for iOS applications. Built with enterprise-grade standards and modern offline-first patterns, this framework provides seamless offline capabilities, intelligent data synchronization, and robust conflict resolution.

🎯 What Makes This Framework Special?

• 📱 Offline-First: Complete offline functionality with local data persistence
• 🔄 Smart Sync: Intelligent data synchronization and conflict resolution
• 📦 Data Persistence: Robust local data storage and management
• ⚡ Conflict Resolution: Advanced conflict detection and resolution
• 🌐 Network Adaptive: Adaptive network handling and queue management
• 📊 Data Integrity: Data integrity and consistency guarantees
• 🔄 Background Sync: Background synchronization and updates
• 🎯 Performance: Optimized for performance and battery efficiency

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✨ Key Features

📦 Data Persistence

• Local Storage: Comprehensive local data storage solutions
• Database Integration: SQLite, Core Data, and custom database support
• File System: File-based data persistence and management
• Key-Value Storage: Secure key-value storage with encryption
• Data Migration: Automatic data migration and versioning
• Backup & Restore: Data backup and restore capabilities
• Compression: Data compression and optimization
• Encryption: Local data encryption and security

🔄 Synchronization

• Smart Sync: Intelligent data synchronization algorithms
• Incremental Sync: Efficient incremental synchronization
• Bidirectional Sync: Two-way data synchronization
• Conflict Detection: Automatic conflict detection and resolution
• Sync Queues: Background synchronization queues
• Network Adaptation: Adaptive network handling
• Retry Logic: Robust retry mechanisms
• Sync Monitoring: Real-time synchronization monitoring

⚡ Conflict Resolution

• Conflict Detection: Automatic conflict detection algorithms
• Resolution Strategies: Multiple conflict resolution strategies
• Manual Resolution: User-controlled conflict resolution
• Version Control: Data versioning and history
• Merge Algorithms: Advanced data merging algorithms
• Conflict Logging: Comprehensive conflict logging
• Resolution Policies: Configurable resolution policies
• Data Integrity: Conflict resolution with data integrity

📱 Offline Capabilities

• Offline Mode: Complete offline functionality
• Local Operations: Full local data operations
• Offline Queue: Offline operation queuing
• Data Availability: Guaranteed data availability offline
• Offline UI: Offline-aware user interface
• Offline Indicators: Clear offline status indicators
• Graceful Degradation: Graceful offline degradation
• Offline Analytics: Offline usage analytics

🌐 Network Adaptation

• Network Detection: Automatic network connectivity detection
• Adaptive Sync: Network-adaptive synchronization
• Bandwidth Optimization: Bandwidth-optimized data transfer
• Connection Management: Intelligent connection management
• Network Queuing: Network operation queuing
• Retry Strategies: Network retry strategies
• Offline Recovery: Seamless offline-to-online recovery
• Network Monitoring: Real-time network monitoring

---

📦 Data Persistence

Local Storage Manager

// Local storage manager
let storageManager = LocalStorageManager()

// Configure local storage
let storageConfig = LocalStorageConfiguration()
storageConfig.enableEncryption = true
storageConfig.enableCompression = true
storageConfig.maxStorageSize = 100 * 1024 * 1024 // 100MB
storageConfig.enableBackup = true

// Setup local storage
storageManager.configure(storageConfig)

// Store data locally
let userData = UserData(
    id: "123",
    name: "John Doe",
    email: "john@company.com",
    lastSync: Date()
)

storageManager.store(
    key: "user_123",
    data: userData,
    encryption: .aes256
) { result in
    switch result {
    case .success:
        print("✅ Data stored locally")
    case .failure(let error):
        print("❌ Local storage failed: \(error)")
    }
}

// Retrieve local data
storageManager.retrieve(key: "user_123") { result in
    switch result {
    case .success(let data):
        print("✅ Local data retrieved")
        print("User: \(data.name)")
        print("Last sync: \(data.lastSync)")
    case .failure(let error):
        print("❌ Local data retrieval failed: \(error)")
    }
}

Database Integration

// Database manager
let databaseManager = DatabaseManager()

// Configure database
let dbConfig = DatabaseConfiguration()
dbConfig.databaseType = .sqlite
dbConfig.enableMigrations = true
dbConfig.enableEncryption = true
dbConfig.maxConnections = 10

// Setup database
databaseManager.configure(dbConfig)

// Create database table
let userTable = DatabaseTable(
    name: "users",
    columns: [
        Column("id", type: .text, primaryKey: true),
        Column("name", type: .text, nullable: false),
        Column("email", type: .text, unique: true),
        Column("created_at", type: .datetime, defaultValue: "CURRENT_TIMESTAMP")
    ]
)

databaseManager.createTable(userTable) { result in
    switch result {
    case .success:
        print("✅ Database table created")
    case .failure(let error):
        print("❌ Database table creation failed: \(error)")
    }
}

// Insert data
let user = User(
    id: "123",
    name: "John Doe",
    email: "john@company.com"
)

databaseManager.insert(user, into: "users") { result in
    switch result {
    case .success:
        print("✅ Data inserted into database")
    case .failure(let error):
        print("❌ Database insertion failed: \(error)")
    }
}

---

🔄 Synchronization

Smart Synchronization

// Synchronization manager
let syncManager = SynchronizationManager()

// Configure synchronization
let syncConfig = SynchronizationConfiguration()
syncConfig.enableIncrementalSync = true
syncConfig.enableBidirectionalSync = true
syncConfig.syncInterval = 300 // 5 minutes
syncConfig.maxRetries = 3
syncConfig.enableBackgroundSync = true

// Setup synchronization
syncManager.configure(syncConfig)

// Start synchronization
syncManager.startSync { progress in
    print("Sync progress: \(progress.percentage)%")
    print("Synced items: \(progress.syncedItems)")
    print("Total items: \(progress.totalItems)")
} completion: { result in
    switch result {
    case .success(let syncResult):
        print("✅ Synchronization successful")
        print("Synced items: \(syncResult.syncedItems)")
        print("Conflicts resolved: \(syncResult.conflictsResolved)")
        print("Sync time: \(syncResult.syncTime)s")
    case .failure(let error):
        print("❌ Synchronization failed: \(error)")
    }
}

Incremental Synchronization

// Incremental sync manager
let incrementalSync = IncrementalSyncManager()

// Configure incremental sync
let incrementalConfig = IncrementalSyncConfiguration()
incrementalConfig.enableDeltaSync = true
incrementalConfig.syncThreshold = 100 // items
incrementalConfig.enableCompression = true

// Perform incremental sync
incrementalSync.syncIncremental(
    since: lastSyncTimestamp,
    configuration: incrementalConfig
) { result in
    switch result {
    case .success(let syncResult):
        print("✅ Incremental sync successful")
        print("Delta items: \(syncResult.deltaItems)")
        print("Compression ratio: \(syncResult.compressionRatio)")
        print("Sync time: \(syncResult.syncTime)s")
    case .failure(let error):
        print("❌ Incremental sync failed: \(error)")
    }
}

---

⚡ Conflict Resolution

Conflict Detection

// Conflict resolution manager
let conflictResolver = ConflictResolutionManager()

// Configure conflict resolution
let conflictConfig = ConflictResolutionConfiguration()
conflictConfig.enableAutomaticResolution = true
conflictConfig.resolutionStrategy = .lastWriteWins
conflictConfig.enableManualResolution = true
conflictConfig.enableConflictLogging = true

// Setup conflict resolution
conflictResolver.configure(conflictConfig)

// Detect conflicts
conflictResolver.detectConflicts(
    localData: localUserData,
    remoteData: remoteUserData
) { result in
    switch result {
    case .success(let conflicts):
        print("✅ Conflicts detected")
        for conflict in conflicts {
            print("Conflict field: \(conflict.field)")
            print("Local value: \(conflict.localValue)")
            print("Remote value: \(conflict.remoteValue)")
        }
    case .failure(let error):
        print("❌ Conflict detection failed: \(error)")
    }
}

Conflict Resolution Strategies

// Conflict resolution strategies
let resolutionStrategies = ConflictResolutionStrategies()

// Last write wins strategy
resolutionStrategies.lastWriteWins(
    localData: localUserData,
    remoteData: remoteUserData
) { result in
    switch result {
    case .success(let resolvedData):
        print("✅ Conflict resolved with last write wins")
        print("Resolved data: \(resolvedData)")
    case .failure(let error):
        print("❌ Conflict resolution failed: \(error)")
    }
}

// Manual resolution
conflictResolver.resolveManually(
    conflicts: detectedConflicts,
    resolution: userResolution
) { result in
    switch result {
    case .success(let resolvedData):
        print("✅ Manual conflict resolution successful")
        print("Resolved data: \(resolvedData)")
    case .failure(let error):
        print("❌ Manual conflict resolution failed: \(error)")
    }
}

---

📱 Offline Capabilities

Offline Mode Management

// Offline mode manager
let offlineManager = OfflineModeManager()

// Configure offline mode
let offlineConfig = OfflineModeConfiguration()
offlineConfig.enableOfflineMode = true
offlineConfig.enableOfflineQueue = true
offlineConfig.maxQueueSize = 1000
offlineConfig.enableOfflineIndicators = true

// Setup offline mode
offlineManager.configure(offlineConfig)

// Check offline status
offlineManager.isOffline { result in
    switch result {
    case .success(let isOffline):
        if isOffline {
            print("📱 App is in offline mode")
            print("Queued operations: \(offlineManager.queuedOperations)")
        } else {
            print("🌐 App is online")
        }
    case .failure(let error):
        print("❌ Offline status check failed: \(error)")
    }
}

// Perform offline operation
offlineManager.performOfflineOperation(
    operation: .createUser,
    data: userData
) { result in
    switch result {
    case .success(let operation):
        print("✅ Offline operation queued")
        print("Operation ID: \(operation.id)")
        print("Queue position: \(operation.queuePosition)")
    case .failure(let error):
        print("❌ Offline operation failed: \(error)")
    }
}

Offline Data Operations

// Offline data operations
let offlineOperations = OfflineDataOperations()

// Create user offline
offlineOperations.createUser(userData) { result in
    switch result {
    case .success(let user):
        print("✅ User created offline")
        print("User ID: \(user.id)")
        print("Sync status: \(user.syncStatus)")
    case .failure(let error):
        print("❌ Offline user creation failed: \(error)")
    }
}

// Update user offline
offlineOperations.updateUser(userId: "123", updates: userUpdates) { result in
    switch result {
    case .success(let user):
        print("✅ User updated offline")
        print("Last modified: \(user.lastModified)")
        print("Sync pending: \(user.syncPending)")
    case .failure(let error):
        print("❌ Offline user update failed: \(error)")
    }
}

// Delete user offline
offlineOperations.deleteUser(userId: "123") { result in
    switch result {
    case .success:
        print("✅ User deleted offline")
        print("Deletion queued for sync")
    case .failure(let error):
        print("❌ Offline user deletion failed: \(error)")
    }
}

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🚀 Quick Start

Prerequisites

• iOS 15.0+ with iOS 15.0+ SDK
• Swift 5.9+ programming language
• Xcode 15.0+ development environment
• Git version control system
• Swift Package Manager for dependency management

Installation

# Clone the repository
git clone https://github.com/muhittincamdali/iOS-Offline-First-Framework.git

# Navigate to project directory
cd iOS-Offline-First-Framework

# Install dependencies
swift package resolve

# Open in Xcode
open Package.swift

Swift Package Manager

Add the framework to your project:

dependencies: [
    .package(url: "https://github.com/muhittincamdali/iOS-Offline-First-Framework.git", from: "1.0.0")
]

Basic Setup

import OfflineFirstFramework

// Initialize offline-first manager
let offlineFirstManager = OfflineFirstManager()

// Configure offline-first settings
let offlineConfig = OfflineFirstConfiguration()
offlineConfig.enableOfflineMode = true
offlineConfig.enableSynchronization = true
offlineConfig.enableConflictResolution = true
offlineConfig.enableDataPersistence = true

// Start offline-first manager
offlineFirstManager.start(with: offlineConfig)

// Configure data persistence
offlineFirstManager.configureDataPersistence { config in
    config.enableEncryption = true
    config.enableCompression = true
    config.maxStorageSize = 100 * 1024 * 1024 // 100MB
}

---

📱 Usage Examples

Simple Offline Operation

// Simple offline operation
let simpleOffline = SimpleOfflineOperations()

// Create user offline
simpleOffline.createUser(
    name: "John Doe",
    email: "john@company.com"
) { result in
    switch result {
    case .success(let user):
        print("✅ User created offline")
        print("User ID: \(user.id)")
        print("Sync status: \(user.syncStatus)")
    case .failure(let error):
        print("❌ Offline user creation failed: \(error)")
    }
}

Synchronization Example

// Synchronization example
let syncExample = SynchronizationExample()

// Sync data with server
syncExample.syncWithServer { result in
    switch result {
    case .success(let syncResult):
        print("✅ Synchronization successful")
        print("Synced items: \(syncResult.syncedItems)")
        print("Conflicts resolved: \(syncResult.conflictsResolved)")
    case .failure(let error):
        print("❌ Synchronization failed: \(error)")
    }
}

---

🔧 Configuration

Offline-First Configuration

// Configure offline-first settings
let offlineConfig = OfflineFirstConfiguration()

// Enable features
offlineConfig.enableOfflineMode = true
offlineConfig.enableSynchronization = true
offlineConfig.enableConflictResolution = true
offlineConfig.enableDataPersistence = true

// Set offline settings
offlineConfig.maxStorageSize = 100 * 1024 * 1024 // 100MB
offlineConfig.syncInterval = 300 // 5 minutes
offlineConfig.maxRetries = 3
offlineConfig.enableBackgroundSync = true

// Set conflict resolution settings
offlineConfig.conflictResolutionStrategy = .lastWriteWins
offlineConfig.enableManualResolution = true
offlineConfig.enableConflictLogging = true

// Apply configuration
offlineFirstManager.configure(offlineConfig)

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📚 Documentation

API Documentation

Comprehensive API documentation is available for all public interfaces:

• Offline-First Manager API - Core offline-first functionality
• Data Persistence API - Data persistence features
• Synchronization API - Synchronization capabilities
• Conflict Resolution API - Conflict resolution features
• Offline Operations API - Offline operations
• Network Adaptation API - Network adaptation
• Configuration API - Configuration options
• Monitoring API - Monitoring capabilities

Integration Guides

• Getting Started Guide - Quick start tutorial
• Data Persistence Guide - Data persistence setup
• Synchronization Guide - Synchronization setup
• Conflict Resolution Guide - Conflict resolution
• Offline Operations Guide - Offline operations
• Network Adaptation Guide - Network adaptation
• Best Practices Guide - Best practices

Examples

• Basic Examples - Simple offline-first implementations
• Advanced Examples - Complex offline-first scenarios
• Data Persistence Examples - Data persistence examples
• Synchronization Examples - Synchronization examples
• Conflict Resolution Examples - Conflict resolution examples
• Offline Operations Examples - Offline operations examples

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🤝 Contributing

We welcome contributions! Please read our Contributing Guidelines for details on our code of conduct and the process for submitting pull requests.

Development Setup

1. Fork the repository
2. Create feature branch (git checkout -b feature/amazing-feature)
3. Commit your changes (git commit -m 'Add amazing feature')
4. Push to the branch (git push origin feature/amazing-feature)
5. Open Pull Request

Code Standards

• Follow Swift API Design Guidelines
• Maintain 100% test coverage
• Use meaningful commit messages
• Update documentation as needed
• Follow offline-first best practices
• Implement proper error handling
• Add comprehensive examples

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📄 License

This project is licensed under the MIT License - see the LICENSE file for details.

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🙏 Acknowledgments

• Apple for the excellent iOS development platform
• The Swift Community for inspiration and feedback
• All Contributors who help improve this framework
• Offline-First Community for best practices and standards
• Open Source Community for continuous innovation
• iOS Developer Community for offline-first insights
• Data Synchronization Community for sync expertise

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⭐ Star this repository if it helped you!

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📊 Project Statistics

🌟 Stargazers

QuickStart

1. Add the package to your project using Swift Package Manager.
2. Build:
3. Run tests:
4. Explore examples in and .