44 lines
1.5 KiB
Swift
44 lines
1.5 KiB
Swift
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import Foundation
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/// The bridge that carries ``RecordingCommand``s from outside the feature's UI into the recording flow.
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///
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/// The commander exists because the senders of the commands — the App Intents behind a Live Activity's buttons — are instantiated
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/// by the system, out of reach of the feature's dependency injection: they send through the process-wide ``shared`` instance, and the
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/// feature's model listens to ``commands``, translating every received command into the button press it mirrors. Unit tests create
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/// commanders of their own and inject them into the model, leaving the shared instance untouched.
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@MainActor
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public final class RecordingCommander {
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// MARK: Constants
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/// The process-wide commander the recording flow listens to by default.
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public static let shared = RecordingCommander()
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// MARK: Properties
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/// The stream of commands sent through the commander.
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public let commands: AsyncStream<RecordingCommand>
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/// The continuation that feeds ``commands``.
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private let continuation: AsyncStream<RecordingCommand>.Continuation
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// MARK: Initializers
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/// Creates a commander with an empty stream of commands.
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public init() {
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(commands, continuation) = AsyncStream.makeStream(of: RecordingCommand.self)
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}
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// MARK: Methods
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/// Sends a command to the recording flow listening to the commander.
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///
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/// - Parameter command: The command to send.
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public func send(
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_ command: RecordingCommand
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) {
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continuation.yield(command)
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}
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}
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