App Intents 2.0 e Siri Shortcuts: guida all'automazione iOS 27

import AppIntents

// An AppIntent represents an action users can perform
struct CreateTaskIntent: AppIntent {
    // Title displayed in Shortcuts and Siri
    static var title: LocalizedStringResource = "Create a task"

    // Description for accessibility and suggestions
    static var description = IntentDescription(
        "Creates a new task in the application."
    )

    // Parameter with automatic validation
    @Parameter(title: "Task title")
    var taskTitle: String

    // Optional parameter with default value
    @Parameter(title: "Priority", default: .medium)
    var priority: TaskPriority

    // Action execution with async/await
    func perform() async throws -> some IntentResult & ReturnsValue<TaskEntity> {
        // Create task via service
        let task = TaskService.shared.createTask(
            title: taskTitle,
            priority: priority
        )

        // Return created entity for chaining
        return .result(value: TaskEntity(task: task))
    }
}

import AppIntents

struct ExportDataIntent: AppIntent {
    static var title: LocalizedStringResource = "Export data"

    @Parameter(title: "Format")
    var format: ExportFormat

    // Streaming response for progress reporting
    func perform() async throws -> some IntentResult & ProvidesDialog {
        let totalItems = DataService.shared.itemCount
        var processed = 0

        // Stream progress updates to Siri
        for item in DataService.shared.allItems {
            await exportItem(item, format: format)
            processed += 1

            // Report progress at intervals
            if processed % 100 == 0 {
                await reportProgress(
                    "Exported (processed) of (totalItems) items..."
                )
            }
        }

        return .result(
            dialog: "Export complete. (totalItems) items saved as (format.rawValue)."
        )
    }
}

import AppIntents

struct SmartTaskIntent: AppIntent {
    static var title: LocalizedStringResource = "Create smart task"

    @Parameter(title: "Task title")
    var taskTitle: String?

    @Parameter(title: "Priority")
    var priority: TaskPriority?

    @Parameter(title: "Due date")
    var dueDate: Date?

    // Multi-turn conversation flow
    func perform() async throws -> some IntentResult & ProvidesDialog {
        // Request missing parameters conversationally
        let title = try await taskTitle ?? requestValue(
            for: .,
            dialog: "What should the task be called?"
        )

        let taskPriority = try await priority ?? requestValue(
            for: .,
            dialog: "What priority level?"
        )

        // Optional follow-up
        let date: Date?
        if try await requestConfirmation(
            result: .result(dialog: "Should this task have a due date?")
        ) {
            date = try await requestValue(
                for: .,
                dialog: "When is it due?"
            )
        } else {
            date = nil
        }

        let task = TaskService.shared.createTask(
            title: title,
            priority: taskPriority,
            dueDate: date
        )

        return .result(
            dialog: "Created '(task.title)' with (taskPriority.rawValue) priority."
        )
    }
}

import SwiftUI
import AppIntents

struct PhotoGridView: View {
    let photos: [Photo]

    var body: some View {
        LazyVGrid(columns: [GridItem(.adaptive(minimum: 100))]) {
            ForEach(photos) { photo in
                PhotoThumbnail(photo: photo)
                    // Annotate view for Siri reference
                    .appIntentAnnotation(
                        entity: PhotoEntity(photo: photo),
                        label: photo.title
                    )
            }
        }
    }
}

// Intent that accepts view-referenced entities
struct SharePhotoIntent: AppIntent {
    static var title: LocalizedStringResource = "Share photo"

    // Parameter resolved from on-screen annotation
    @Parameter(title: "Photo", supportsViewAnnotation: true)
    var photo: PhotoEntity

    func perform() async throws -> some IntentResult & ProvidesDialog {
        await ShareService.share(photo.id)
        return .result(dialog: "Photo shared.")
    }
}

import AppIntents

// Internal data model
struct Task: Identifiable, Codable {
    let id: UUID
    var title: String
    var priority: TaskPriority
    var isCompleted: Bool
    var dueDate: Date?
}

// Entity exposed to the system
struct TaskEntity: AppEntity {
    // Required unique identifier
    var id: UUID

    // Displayable properties
    var title: String
    var priority: TaskPriority
    var isCompleted: Bool

    // Display configuration in the system
    static var typeDisplayRepresentation: TypeDisplayRepresentation = "Task"

    // Visual representation of the instance
    var displayRepresentation: DisplayRepresentation {
        DisplayRepresentation(
            title: "(title)",
            subtitle: "(priority.rawValue)",
            image: .init(systemName: isCompleted ? "checkmark.circle.fill" : "circle")
        )
    }

    // Default query for searching entities
    static var defaultQuery = TaskEntityQuery()

    // Initializer from internal model
    init(task: Task) {
        self.id = task.id
        self.title = task.title
        self.priority = task.priority
        self.isCompleted = task.isCompleted
    }
}

// Optimized entity query with search
struct TaskEntityQuery: EntityStringQuery {
    // Text search with service-side filtering
    func entities(matching string: String) async throws -> [TaskEntity] {
        TaskService.shared.search(query: string, limit: 10)
            .map { TaskEntity(task: /bin/bash) }
    }

    // Search by identifiers
    func entities(for identifiers: [UUID]) async throws -> [TaskEntity] {
        TaskService.shared.fetchTasks()
            .filter { identifiers.contains(/bin/bash.id) }
            .map { TaskEntity(task: /bin/bash) }
    }

    // Limited suggestions for performance
    func suggestedEntities() async throws -> [TaskEntity] {
        TaskService.shared.fetchRecentTasks(limit: 5)
            .map { TaskEntity(task: /bin/bash) }
    }
}

import AppIntents

// Enum exposed to the system
enum TaskPriority: String, AppEnum, Codable {
    case low
    case medium
    case high

    // Type name displayed
    static var typeDisplayRepresentation: TypeDisplayRepresentation = "Priority"

    // Representation of each case
    static var caseDisplayRepresentations: [TaskPriority: DisplayRepresentation] = [
        .low: DisplayRepresentation(
            title: "Low",
            image: .init(systemName: "arrow.down.circle")
        ),
        .medium: DisplayRepresentation(
            title: "Medium",
            image: .init(systemName: "minus.circle")
        ),
        .high: DisplayRepresentation(
            title: "High",
            image: .init(systemName: "exclamationmark.circle")
        )
    ]
}

import AppIntents

// Provider declaring all app shortcuts
struct TaskAppShortcutsProvider: AppShortcutsProvider {
    // Maximum 10 shortcuts per application
    @AppShortcutsBuilder
    static var appShortcuts: [AppShortcut] {
        // Shortcut to create a task
        AppShortcut(
            intent: CreateTaskIntent(),
            phrases: [
                // The .applicationName placeholder is REQUIRED
                "Create a task with (.applicationName)",
                "New task in (.applicationName)",
                "Add a task to (.applicationName)"
            ],
            shortTitle: "Create Task",
            systemImageName: "plus.circle"
        )

        // Shortcut with dynamic parameter
        AppShortcut(
            intent: CompleteTaskIntent(),
            phrases: [
                "Complete (.) in (.applicationName)",
                "Mark (.) as done with (.applicationName)"
            ],
            shortTitle: "Complete Task",
            systemImageName: "checkmark.circle"
        )

        // Shortcut for smart conversational intent
        AppShortcut(
            intent: SmartTaskIntent(),
            phrases: [
                "Quick task (.applicationName)",
                "Remind me (.applicationName)"
            ],
            shortTitle: "Smart Task",
            systemImageName: "brain"
        )
    }
}

import AppIntents
import WidgetKit

// Widget-optimized intent (fast execution)
struct ToggleTaskFromWidgetIntent: AppIntent {
    static var title: LocalizedStringResource = "Toggle task"

    @Parameter(title: "Task ID")
    var taskID: String

    init() {}

    init(taskID: UUID) {
        self.taskID = taskID.uuidString
    }

    // No dialog for widgets
    func perform() async throws -> some IntentResult {
        guard let uuid = UUID(uuidString: taskID) else {
            return .result()
        }

        TaskService.shared.toggleCompletion(taskId: uuid)

        // Immediate widget refresh
        WidgetCenter.shared.reloadTimelines(ofKind: "TaskWidget")

        return .result()
    }
}

// Widget view with interactive button
import SwiftUI

struct TaskWidgetView: View {
    let task: Task

    var body: some View {
        Button(intent: ToggleTaskFromWidgetIntent(taskID: task.id)) {
            HStack {
                Image(systemName: task.isCompleted ? "checkmark.circle.fill" : "circle")
                    .foregroundStyle(task.isCompleted ? .green : .secondary)

                Text(task.title)
                    .strikethrough(task.isCompleted)
            }
            .padding()
        }
        .buttonStyle(.plain)
    }
}

import AppIntents
import FoundationModels

struct SummarizeNotesIntent: AppIntent {
    static var title: LocalizedStringResource = "Summarize notes"

    @Parameter(title: "Topic")
    var topic: String

    func perform() async throws -> some IntentResult & ProvidesDialog {
        let notes = NoteService.shared.fetchNotes(matching: topic)
        let content = notes.map(.content).joined(separator: "

")

        // Use Foundation Models for on-device summarization
        let model = LanguageModel.default
        let summary = try await model.generate(
            prompt: "Summarize these notes in 2 sentences: (content)",
            maxTokens: 100
        )

        return .result(dialog: IntentDialog(summary))
    }
}

// Before: SiriKit Intent Handler
class CreateTaskIntentHandler: NSObject, CreateTaskIntentHandling {
    func handle(intent: CreateTaskIntent) async -> CreateTaskIntentResponse {
        guard let title = intent.taskTitle else {
            return CreateTaskIntentResponse(code: .failure, userActivity: nil)
        }

        let task = TaskService.shared.createTask(title: title)
        return CreateTaskIntentResponse.success(task: task)
    }
}

// After: App Intent (iOS 27)
struct CreateTaskIntent: AppIntent {
    static var title: LocalizedStringResource = "Create a task"

    @Parameter(title: "Task title")
    var taskTitle: String

    func perform() async throws -> some IntentResult & ReturnsValue<TaskEntity> {
        let task = TaskService.shared.createTask(title: taskTitle)
        return .result(value: TaskEntity(task: task))
    }
}

import XCTest
import AppIntentsTesting
@testable import TaskApp

final class TaskIntentTests: XCTestCase {

    override func setUp() {
        super.setUp()
        TaskService.shared.reset()
    }

    func testCreateTaskIntent() async throws {
        // Given
        var intent = CreateTaskIntent()
        intent.taskTitle = "Test Task"
        intent.priority = .high

        // When
        let result = try await intent.perform()

        // Then
        let tasks = TaskService.shared.fetchTasks()
        XCTAssertEqual(tasks.count, 1)
        XCTAssertEqual(tasks.first?.title, "Test Task")
        XCTAssertEqual(tasks.first?.priority, .high)
    }

    func testEntityQuery() async throws {
        // Given
        let task1 = TaskService.shared.createTask(title: "Task 1", priority: .low)
        let task2 = TaskService.shared.createTask(title: "Task 2", priority: .high)

        let query = TaskEntityQuery()

        // When
        let entities = try await query.entities(for: [task1.id, task2.id])

        // Then
        XCTAssertEqual(entities.count, 2)
    }

    func testStreamingIntent() async throws {
        // Given
        var intent = ExportDataIntent()
        intent.format = .json

        // When
        let result = try await intent.perform()

        // Then: verify completion dialog
        XCTAssertNotNil(result)
    }
}