feat: DataPoint iOS SDK v1.0.1

- Initialize SDK with API key
- Present micro-tasks to users
- Reward callbacks and listener support
- User ID and attributes management
- Swift Package Manager support
- Production-ready URLs

Apache License 2.0

Author: mmanuja

LICENSE

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Package.swift

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+// swift-tools-version: 5.9
+// The swift-tools-version declares the minimum version of Swift required to build this package.
+
+import PackageDescription
+
+let package = Package(
+    name: "DataPointSDK",
+    platforms: [
+        .iOS(.v13)
+    ],
+    products: [
+        .library(
+            name: "DataPointSDK",
+            targets: ["DataPointSDK"]
+        ),
+    ],
+    targets: [
+        .target(
+            name: "DataPointSDK",
+            path: "datapoint"
+        ),
+    ]
+)

README.md

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+# DataPoint iOS SDK
+
+Monetize your app with micro-tasks via the DataPoint iOS SDK.
+
+## Installation
+
+### Swift Package Manager (Recommended)
+
+Add the following to your `Package.swift`:
+
+```swift
+dependencies: [
+    .package(url: "https://github.com/trydatapoint/datapoint-ios-sdk.git", from: "1.0.1")
+]
+```
+
+Or in Xcode: **File → Add Package Dependencies** → Enter the repository URL.
+
+## Usage
+
+### Initialize the SDK
+
+```swift
+import DataPointSDK
+
+DataPoint.initialize(apiKey: "YOUR_API_KEY") { result in
+    switch result {
+    case .success:
+        print("SDK initialized")
+    case .failure(let error):
+        print("Failed: \(error)")
+    }
+}
+```
+
+### Set User ID (Optional)
+
+```swift
+DataPoint.setAppUserId("user123") { result in
+    // Handle result
+}
+```
+
+### Show Tasks
+
+```swift
+DataPoint.setListener(self)
+DataPoint.showTasks(from: viewController)
+```
+
+### Implement DataPointListener
+
+```swift
+extension YourClass: DataPointListener {
+    func onTaskCompleted(_ payload: String?) {
+        // User completed a task
+    }
+    
+    func onAdRequested() {
+        // Show an ad
+    }
+    
+    func noTaskAvailable() {
+        // No tasks available
+    }
+    
+    func onClosed() {
+        // Task screen closed
+    }
+    
+    func onError(message: String, code: Int) {
+        // Handle error
+    }
+}
+```
+
+## Requirements
+
+- iOS 13.0+
+- Swift 5.9+
+
+## License
+
+Apache License 2.0 - see [LICENSE](LICENSE) for details.

datapoint/DataPointCallback.swift

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+import Foundation
+
+/// Callback for asynchronous SDK operations such as user attributes.
+public protocol DataPointCallback: AnyObject {
+    func onSuccess()
+    func onError(message: String, code: Int)
+}

datapoint/DataPointListener.swift

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+import Foundation
+
+/// Callback interface for task-related events. Set via `DataPoint.setListener`.
+public protocol DataPointListener: AnyObject {
+    /// A task was completed. `payload` is the raw JSON string from the WebView, or `nil`.
+    func onTaskCompleted(_ payload: String?)
+
+    /// The WebView requested that the host app show an ad. The task screen is closed before this fires.
+    func onAdRequested()
+
+    /// No tasks are currently available; the task screen is closed before this fires.
+    func noTaskAvailable()
+
+    /// The task screen was dismissed (user, WebView, or `closeTasks()`).
+    func onClosed()
+
+    /// An error occurred.
+    func onError(message: String, code: Int)
+}

datapoint/Environment.swift

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+import Foundation
+
+/// SDK environment configuration.
+///
+/// - `production` — Connects to the live backend; performs real validation.
+/// - `sandbox` — Uses mock session data; skips network during initialization.
+public enum Environment: String, Sendable {
+    case production = "production"
+    case sandbox = "sandbox"
+}

datapoint/ErrorCode.swift

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+import Foundation
+
+/// Error codes returned by SDK callbacks (aligned with Android).
+public enum ErrorCode: Int, Sendable {
+    /// `DataPoint.initialize` has not been called or has not completed.
+    case sdkNotInitialized = 1001
+    /// The initialization network request failed.
+    case initializationFailed = 1002
+    /// The session token expired and automatic re-initialization failed.
+    case sessionExpired = 1003
+    /// Invalid parameters passed to the SDK (e.g. blank apiKey).
+    case invalidConfiguration = 1004
+    /// `showTasks` was called while the task screen is already visible.
+    case taskAlreadyShowing = 1005
+    /// A generic network error (no connectivity, timeout, etc.).
+    case networkError = 1007
+    /// Invalid request parameters sent to the server (HTTP 400).
+    case invalidRequest = 1008
+    /// The API key is invalid or unauthorized (HTTP 401).
+    case invalidApiKey = 1009
+    /// The server encountered an internal error (HTTP 5xx).
+    case serverError = 1012
+}

datapoint/InitCallback.swift

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+import Foundation
+
+/// Optional callback for `DataPoint.initialize`.
+public protocol InitCallback: AnyObject {
+    func onSuccess()
+    func onError(message: String, code: Int)
+}