Implement App Shortcuts with App Intents

// StartMeditationIntent creates a meditation session.

import AppIntents

struct StartMeditationIntent: AppIntent {
    static let title: LocalizedStringResource = "Start Meditation Session"

    func perform() async throws -> some IntentResult & ProvidesDialog {
        await MeditationService.startDefaultSession()
        return .result(dialog: "Okay, starting a meditation session.")
    }
}

// An AppShortcut turns an Intent into a full fledged shortcut
// AppShortcuts are returned from a struct that implements the AppShortcuts
// protocol

import AppIntents

struct MeditationShortcuts: AppShortcutsProvider {
    static var appShortcuts: [AppShortcut] {
        AppShortcut(
            intent: StartMeditationIntent(),
            phrases: ["Start a \(.applicationName)"]
        )
    }
}

// An AppShortcut turns an Intent into a full fledged shortcut
// AppShortcuts are returned from a struct that implements the AppShortcuts
// protocol

import AppIntents

struct MeditationShortcuts: AppShortcutsProvider {
    static var appShortcuts: [AppShortcut] {
        AppShortcut(
            intent: StartMeditationIntent(),
            phrases: [
                "Start a \(.applicationName)",
                "Begin \(.applicationName)",
                "Meditate with \(.applicationName)",
                "Start a session with \(.applicationName)"
            ]
        )
    }
}

// Custom views give your intent more personality
// and can convey more information

func perform() async throws -> some ProvidesDialog & ShowsSnippetView {
    await MeditationService.startDefaultSession()

    return .result(
        dialog: "Okay, starting a meditation session.",
        view: MeditationSnippetView()
    )
}

// An entity is a type that can be used as a parameter
// for an AppIntent.

import AppIntents

struct MeditationSession: AppEntity {
    let id: UUID
    let name: LocalizedStringResource

    static var typeDisplayName: LocalizedStringResource = "Meditation Session"
    var displayRepresentation: AppIntents.DisplayRepresentation {
        DisplayRepresentation(title: name)
    }

    static var defaultQuery = MeditationSessionQuery()
}

// Queries allow the App Intents framework to
// look up your entities by their identifier

struct MeditationSessionQuery: EntityQuery {
    func entities(for identifiers: [UUID]) async throws -> [MeditationSession] {
        return identifiers.compactMap { SessionManager.session(for: $0) }
    }
}

// Adding a parameter to an intent allows you to prompt the user
// to provide a value for the parameter

struct StartMeditationIntent: AppIntent {

    @Parameter(title: "Session Type")
    var sessionType: SessionType?

    // ...

}

// Prompting for values can be done by calling methods
// on the property's wrapper type.

func perform() async throws -> some ProvidesDialog {
    let sessionToRun = self.session ?? try await $session.requestDisambiguation(
           among: SessionManager.allSessions,
           dialog: IntentDialog("What session would you like?")
       )
    }
    await MeditationService.start(session: sessionToRun)
    return .result(
       dialog: "Okay, starting a \(sessionToRun.name) meditation session."
    )
}

// Queries can provide suggested values for your Entity
// that serve as parameters for App Shortcuts

struct MeditationSessionQuery: EntityQuery {
    func entities(for identifiers: [UUID]) async throws -> [MeditationSession] {
        return identifiers.compactMap { SessionManager.session(for: $0) }
    }

    func suggestedEntities() async throws -> [MeditationSession] {
        return SessionManager.allSessions
    }
}

// Your app must notify App Intents when your values change
// This is typically best done in your app’s model layer

class SessionModel {
    @Published
    var sessions: [MeditationSession] = []
    private var cancellable: AnyCancellable?

    init() {
        self.cancellable = $sessions.sink { _ in
            MeditationShortcuts.updateAppShortcutParameters()
        }
    }

    // ...

}

// Phrases can also contain a single parameter reference

import AppIntents

struct MeditationShortcuts: AppShortcutsProvider {
    static var appShortcuts: [AppShortcut] {
        AppShortcut(
            intent: StartMeditationIntent(),
            phrases: [
                "Start a \(.applicationName)",
                "Begin \(.applicationName)",
                "Meditate with \(.applicationName)",
                "Start a \(\.$session) session with \(.applicationName)",
                "Begin a \(\.$session) session with \(.applicationName)",
                "Meditate on \(\.$session) with \(.applicationName)"
            ]
        )
    }
}